Summary

ca8ef14c73330706_backup.exe

File ca8ef14c73330706_backup.exe

Summary
Download Resubmit sample

Size 90.7KB
Type PE32 executable (GUI) Intel 80386, for MS Windows
MD5 7d9a00c1e2cb1b7c45ff58fdc74d0367
SHA1 dfc1accf8b76172728ea91e1e37e6e0dbc0327dd
SHA256 ca8ef14c733307068bc5f8133d58234a7b29caa6329eb8712c27abfec8bfca57
SHA512
392c2de0eedb4ca7e51c0e71782bd6377eacfc33d1a88782b46cb2a9e5f4a26788da9305233dffe97127b247e10afa479310852e081da57c84bf5ecfb1f3acc2
CRC32 BA81052C
ssdeep None
Yara
  • suspicious_packer_section - The packer/protector section names/keywords

Score

This file is very suspicious, with a score of 10 out of 10!

Please notice: The scoring system is currently still in development and should be considered an alpha feature.

Autosubmit

Parent_Task_ID:7085544

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Information on Execution

Analysis
Category Started Completed Duration Routing Logs
FILE Nov. 23, 2025, 2:44 a.m. Nov. 23, 2025, 2:51 a.m. 452 seconds internet Show Analyzer Log
Show Cuckoo Log

Analyzer Log

2025-11-15 14:38:24,015 [analyzer] DEBUG: Starting analyzer from: C:\tmpwoh6zt
2025-11-15 14:38:24,015 [analyzer] DEBUG: Pipe server name: \??\PIPE\mXppWMRblMUsQmdSIyOkuUYOUEOdP
2025-11-15 14:38:24,015 [analyzer] DEBUG: Log pipe server name: \??\PIPE\KyWJvNZQrqsvOAlaBhICRhdum
2025-11-15 14:38:24,015 [analyzer] DEBUG: No analysis package specified, trying to detect it automagically.
2025-11-15 14:38:24,015 [analyzer] INFO: Automatically selected analysis package "exe"
2025-11-15 14:38:24,328 [analyzer] DEBUG: Started auxiliary module Curtain
2025-11-15 14:38:24,328 [analyzer] DEBUG: Started auxiliary module DbgView
2025-11-15 14:38:24,953 [analyzer] DEBUG: Started auxiliary module Disguise
2025-11-15 14:38:25,171 [analyzer] DEBUG: Loaded monitor into process with pid 500
2025-11-15 14:38:25,171 [analyzer] DEBUG: Started auxiliary module DumpTLSMasterSecrets
2025-11-15 14:38:25,171 [analyzer] DEBUG: Started auxiliary module Human
2025-11-15 14:38:25,171 [analyzer] DEBUG: Started auxiliary module InstallCertificate
2025-11-15 14:38:25,171 [analyzer] DEBUG: Started auxiliary module Reboot
2025-11-15 14:38:25,280 [analyzer] DEBUG: Started auxiliary module RecentFiles
2025-11-15 14:38:25,296 [analyzer] DEBUG: Started auxiliary module Screenshots
2025-11-15 14:38:25,296 [analyzer] DEBUG: Started auxiliary module Sysmon
2025-11-15 14:38:25,296 [analyzer] DEBUG: Started auxiliary module LoadZer0m0n
2025-11-15 14:38:25,483 [lib.api.process] INFO: Successfully executed process from path u'C:\\Users\\ADMINI~1\\AppData\\Local\\Temp\\ca8ef14c73330706_backup.exe' with arguments '' and pid 2828
2025-11-15 14:38:25,687 [analyzer] DEBUG: Loaded monitor into process with pid 2828
2025-11-15 14:38:25,750 [analyzer] INFO: Added new file to list with pid 2828 and path C:\Users\Administrator\AppData\Local\Temp\backup.exe
2025-11-15 14:38:25,780 [analyzer] INFO: Added new file to list with pid 2828 and path C:\Users\Administrator\AppData\Local\Temp\0C7910BA-F902-421E-9E69-CF9AEE0DD4D7\backup.exe
2025-11-15 14:38:25,842 [analyzer] INFO: Injected into process with pid 844 and name ''
2025-11-15 14:38:26,015 [analyzer] DEBUG: Loaded monitor into process with pid 844
2025-11-15 14:38:26,092 [analyzer] INFO: Added new file to list with pid 2828 and path C:\Users\Administrator\AppData\Local\Temp\9C7EA51D-B2B9-4ABB-A82F-1B32707A146E\backup.exe
2025-11-15 14:38:26,155 [analyzer] INFO: Added new file to list with pid 2828 and path C:\Users\Administrator\AppData\Local\Temp\hsperfdata_Administrator\backup.exe
2025-11-15 14:38:27,062 [analyzer] INFO: Added new file to list with pid 844 and path C:\backup.exe
2025-11-15 14:41:44,483 [analyzer] INFO: Analysis timeout hit, terminating analysis.
2025-11-15 14:41:45,733 [analyzer] INFO: Terminating remaining processes before shutdown.
2025-11-15 14:41:45,733 [lib.api.process] INFO: Successfully terminated process with pid 2828.
2025-11-15 14:41:45,733 [lib.api.process] INFO: Successfully terminated process with pid 844.
2025-11-15 14:41:45,765 [analyzer] INFO: Analysis completed.

Cuckoo Log

2025-11-23 02:44:01,431 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:02,449 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:03,465 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:04,483 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:05,502 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:06,520 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:07,539 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:08,556 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:09,586 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:10,604 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:11,621 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:12,635 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:13,703 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:14,721 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:15,739 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:16,758 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:17,775 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:18,797 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:19,822 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:20,839 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:21,937 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:23,035 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:24,058 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:25,073 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:26,088 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:27,103 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:28,121 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:29,142 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:30,169 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:31,202 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:32,252 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:33,273 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:34,359 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:35,377 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:36,395 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:37,413 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:38,430 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:39,446 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:40,462 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:41,482 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:42,507 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:43,532 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:44,547 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:45,567 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:46,587 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:47,606 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:48,624 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:49,640 [cuckoo.core.scheduler] DEBUG: Task #7181839: no machine available yet
2025-11-23 02:44:50,669 [cuckoo.core.scheduler] INFO: Task #7181839: acquired machine win7x643 (label=win7x643)
2025-11-23 02:44:50,670 [cuckoo.core.resultserver] DEBUG: Now tracking machine 192.168.168.203 for task #7181839
2025-11-23 02:44:50,878 [cuckoo.auxiliary.sniffer] INFO: Started sniffer with PID 3024631 (interface=vboxnet0, host=192.168.168.203)
2025-11-23 02:44:50,966 [cuckoo.machinery.virtualbox] DEBUG: Starting vm win7x643
2025-11-23 02:44:52,022 [cuckoo.machinery.virtualbox] DEBUG: Restoring virtual machine win7x643 to vmcloak
2025-11-23 02:46:17,614 [cuckoo.core.guest] INFO: Starting analysis #7181839 on guest (id=win7x643, ip=192.168.168.203)
2025-11-23 02:46:18,618 [cuckoo.core.guest] DEBUG: win7x643: not ready yet
2025-11-23 02:46:23,641 [cuckoo.core.guest] INFO: Guest is running Cuckoo Agent 0.10 (id=win7x643, ip=192.168.168.203)
2025-11-23 02:46:23,704 [cuckoo.core.guest] DEBUG: Uploading analyzer to guest (id=win7x643, ip=192.168.168.203, monitor=latest, size=6660546)
2025-11-23 02:46:25,197 [cuckoo.core.resultserver] DEBUG: Task #7181839: live log analysis.log initialized.
2025-11-23 02:46:26,376 [cuckoo.core.resultserver] DEBUG: Task #7181839 is sending a BSON stream
2025-11-23 02:46:26,816 [cuckoo.core.resultserver] DEBUG: Task #7181839 is sending a BSON stream
2025-11-23 02:46:27,146 [cuckoo.core.resultserver] DEBUG: Task #7181839 is sending a BSON stream
2025-11-23 02:46:27,622 [cuckoo.core.resultserver] DEBUG: Task #7181839: File upload for 'shots/0001.jpg'
2025-11-23 02:46:27,649 [cuckoo.core.resultserver] DEBUG: Task #7181839 uploaded file length: 133509
2025-11-23 02:46:39,695 [cuckoo.core.guest] DEBUG: win7x643: analysis #7181839 still processing
2025-11-23 02:46:54,771 [cuckoo.core.guest] DEBUG: win7x643: analysis #7181839 still processing
2025-11-23 02:47:09,886 [cuckoo.core.guest] DEBUG: win7x643: analysis #7181839 still processing
2025-11-23 02:47:25,013 [cuckoo.core.guest] DEBUG: win7x643: analysis #7181839 still processing
2025-11-23 02:47:40,136 [cuckoo.core.guest] DEBUG: win7x643: analysis #7181839 still processing
2025-11-23 02:47:55,300 [cuckoo.core.guest] DEBUG: win7x643: analysis #7181839 still processing
2025-11-23 02:48:10,382 [cuckoo.core.guest] DEBUG: win7x643: analysis #7181839 still processing
2025-11-23 02:48:25,604 [cuckoo.core.guest] DEBUG: win7x643: analysis #7181839 still processing
2025-11-23 02:48:40,689 [cuckoo.core.guest] DEBUG: win7x643: analysis #7181839 still processing
2025-11-23 02:48:55,792 [cuckoo.core.guest] DEBUG: win7x643: analysis #7181839 still processing
2025-11-23 02:49:10,883 [cuckoo.core.guest] DEBUG: win7x643: analysis #7181839 still processing
2025-11-23 02:49:25,962 [cuckoo.core.guest] DEBUG: win7x643: analysis #7181839 still processing
2025-11-23 02:49:41,192 [cuckoo.core.guest] DEBUG: win7x643: analysis #7181839 still processing
2025-11-23 02:49:45,927 [cuckoo.core.resultserver] DEBUG: Task #7181839: File upload for 'curtain/1763214104.7.curtain.log'
2025-11-23 02:49:45,930 [cuckoo.core.resultserver] DEBUG: Task #7181839 uploaded file length: 36
2025-11-23 02:49:46,863 [cuckoo.core.resultserver] DEBUG: Task #7181839: File upload for 'sysmon/1763214105.62.sysmon.xml'
2025-11-23 02:49:46,963 [cuckoo.core.resultserver] DEBUG: Task #7181839 uploaded file length: 12715776
2025-11-23 02:49:47,008 [cuckoo.core.resultserver] DEBUG: Task #7181839: File upload for 'files/3f1eb80bc278bbd8_backup.exe'
2025-11-23 02:49:47,011 [cuckoo.core.resultserver] DEBUG: Task #7181839: File upload for 'files/079c67464f072e3b_backup.exe'
2025-11-23 02:49:47,013 [cuckoo.core.resultserver] DEBUG: Task #7181839: File upload for 'files/472a6b58bed269eb_backup.exe'
2025-11-23 02:49:47,015 [cuckoo.core.resultserver] DEBUG: Task #7181839 uploaded file length: 92910
2025-11-23 02:49:47,016 [cuckoo.core.resultserver] DEBUG: Task #7181839 uploaded file length: 92908
2025-11-23 02:49:47,017 [cuckoo.core.resultserver] DEBUG: Task #7181839 had connection reset for <Context for LOG>
2025-11-23 02:49:47,018 [cuckoo.core.resultserver] DEBUG: Task #7181839 uploaded file length: 92908
2025-11-23 02:49:47,226 [cuckoo.core.guest] INFO: win7x643: analysis completed successfully
2025-11-23 02:49:47,249 [cuckoo.core.plugins] DEBUG: Stopped auxiliary module: Redsocks
2025-11-23 02:49:47,270 [cuckoo.core.plugins] DEBUG: Stopped auxiliary module: Sniffer
2025-11-23 02:49:48,120 [cuckoo.machinery.virtualbox] INFO: Successfully generated memory dump for virtual machine with label win7x643 to path /srv/cuckoo/cwd/storage/analyses/7181839/memory.dmp
2025-11-23 02:49:48,121 [cuckoo.machinery.virtualbox] DEBUG: Stopping vm win7x643
2025-11-23 02:51:33,285 [cuckoo.core.resultserver] DEBUG: Stopped tracking machine 192.168.168.203 for task #7181839
2025-11-23 02:51:33,754 [cuckoo.core.scheduler] DEBUG: Released database task #7181839
2025-11-23 02:51:33,770 [cuckoo.core.scheduler] INFO: Task #7181839: analysis procedure completed

Signatures

Yara rule detected for file (1 event)
description The packer/protector section names/keywords rule suspicious_packer_section
Creates executable files on the filesystem (5 events)
file C:\Users\Administrator\AppData\Local\Temp\0C7910BA-F902-421E-9E69-CF9AEE0DD4D7\backup.exe
file C:\backup.exe
file C:\Users\Administrator\AppData\Local\Temp\backup.exe
file C:\Users\Administrator\AppData\Local\Temp\9C7EA51D-B2B9-4ABB-A82F-1B32707A146E\backup.exe
file C:\Users\Administrator\AppData\Local\Temp\hsperfdata_Administrator\backup.exe
Drops an executable to the user AppData folder (1 event)
file C:\Users\Administrator\AppData\Local\Temp\0C7910BA-F902-421E-9E69-CF9AEE0DD4D7\backup.exe
Changes read-write memory protection to read-execute (probably to avoid detection when setting all RWX flags at the same time) (1 event)
Time & API Arguments Status Return Repeated

NtProtectVirtualMemory

 process_identifier: 2828
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 1
length: 24576
protection: 32 (PAGE_EXECUTE_READ)
base_address: 0x003a0000
process_handle: 0xffffffff
1 0 0
The binary likely contains encrypted or compressed data indicative of a packer (2 events)
section {u'size_of_data': u'0x00003e00', u'virtual_address': u'0x00011000', u'entropy': 7.804677160000422, u'name': u'.pdata', u'virtual_size': u'0x00004000'} entropy 7.80467716 description A section with a high entropy has been found
entropy 0.260504201681 description Overall entropy of this PE file is high
Attempts to modify Explorer settings to prevent file extensions from being displayed (1 event)
registry HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt
Attempts to modify Explorer settings to prevent hidden files from being displayed (1 event)
registry HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Hidden
File has been identified by 14 AntiVirus engine on IRMA as malicious (14 events)
G Data Antivirus (Windows) Virus: Trojan.Generic.4385790 (Engine A), Win32.Trojan.Vilsel.B (Engine B)
Avast Core Security (Linux) Win32:Evo-gen [Trj]
C4S ClamAV (Linux) Win.Malware.Genpack-6989317-0
Trend Micro SProtect (Linux) WORM_VILSEL.SMB
Trellix (Linux) Generic VB.z trojan
WithSecure (Linux) Trojan.TR/Crypt.ULPM.Gen
eScan Antivirus (Linux) Trojan.Generic.4385790(DB)
ESET Security (Windows) Win32/VB.OZA trojan
Sophos Anti-Virus (Linux) Troj/VB-LET
DrWeb Antivirus (Linux) Trojan.Copyself.102
ClamAV (Linux) Win.Malware.Genpack-6989317-0
Bitdefender Antivirus (Linux) Trojan.Generic.4385790
Kaspersky Standard (Windows) Trojan.Win32.Vilsel.loy
Emsisoft Commandline Scanner (Windows) Trojan.Generic.4385790 (B)
Screenshots
Name Response Post-Analysis Lookup
No hosts contacted.
IP Address Status Action VT Location
No hosts contacted.
Cuckoo

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