Summary

b2e1b2f9bccc8122f3f40a211901750e035c6a51264906e25d92bc9146d949fb

File b2e1b2f9bccc8122f3f40a211901750e035c6a51264906e25d92bc9146d949fb

Summary
Download Resubmit sample

Size 88.3KB
Type PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed
MD5 fc8e65b9b8806b307afe8b1baf3f5773
SHA1 517344b9eb594fbac67f75362acde6a813cba543
SHA256 b2e1b2f9bccc8122f3f40a211901750e035c6a51264906e25d92bc9146d949fb
SHA512
2c83122d945219680c7a5945ec479daccc3f305c116f0101b0a01aac538d34b14109d46cc53faee9587485eefff02bdd572874b4c7657cd5975ebe618de05761
CRC32 5EE2E2A3
ssdeep None
Yara
  • UPX - (no description)
  • 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

6909745

6909746

Feedback

Expecting different results? Send us this analysis and we will inspect it. Click here

Information on Execution

Analysis
Category Started Completed Duration Routing Logs
FILE Aug. 26, 2025, 1:14 p.m. Aug. 26, 2025, 1:21 p.m. 416 seconds internet Show Analyzer Log
Show Cuckoo Log

Analyzer Log

2025-08-26 10:47:36,015 [analyzer] DEBUG: Starting analyzer from: C:\tmpsftntc
2025-08-26 10:47:36,030 [analyzer] DEBUG: Pipe server name: \??\PIPE\RBTiFLmhWHrRBjyTYD
2025-08-26 10:47:36,030 [analyzer] DEBUG: Log pipe server name: \??\PIPE\MIMqYWrPhsMyNtorImdpmrLjkniacuY
2025-08-26 10:47:36,437 [analyzer] DEBUG: Started auxiliary module Curtain
2025-08-26 10:47:36,437 [analyzer] DEBUG: Started auxiliary module DbgView
2025-08-26 10:47:36,967 [analyzer] DEBUG: Started auxiliary module Disguise
2025-08-26 10:47:37,187 [analyzer] DEBUG: Loaded monitor into process with pid 508
2025-08-26 10:47:37,187 [analyzer] DEBUG: Started auxiliary module DumpTLSMasterSecrets
2025-08-26 10:47:37,187 [analyzer] DEBUG: Started auxiliary module Human
2025-08-26 10:47:37,187 [analyzer] DEBUG: Started auxiliary module InstallCertificate
2025-08-26 10:47:37,187 [analyzer] DEBUG: Started auxiliary module Reboot
2025-08-26 10:47:37,280 [analyzer] DEBUG: Started auxiliary module RecentFiles
2025-08-26 10:47:37,280 [analyzer] DEBUG: Started auxiliary module Screenshots
2025-08-26 10:47:37,280 [analyzer] DEBUG: Started auxiliary module Sysmon
2025-08-26 10:47:37,280 [analyzer] DEBUG: Started auxiliary module LoadZer0m0n
2025-08-26 10:47:37,467 [lib.api.process] INFO: Successfully executed process from path u'C:\\Users\\ADMINI~1\\AppData\\Local\\Temp\\b2e1b2f9bccc8122f3f40a211901750e035c6a51264906e25d92bc9146d949fb.exe' with arguments '' and pid 2636
2025-08-26 10:47:37,687 [analyzer] DEBUG: Loaded monitor into process with pid 2636
2025-08-26 10:47:37,780 [analyzer] INFO: Added new file to list with pid 2636 and path C:\Users\Administrator\AppData\Local\Temp\backup.exe
2025-08-26 10:47:37,796 [analyzer] INFO: Added new file to list with pid 2636 and path C:\Users\Administrator\AppData\Local\Temp\0C7910BA-F902-421E-9E69-CF9AEE0DD4D7\backup.exe
2025-08-26 10:47:37,890 [analyzer] INFO: Injected into process with pid 2204 and name ''
2025-08-26 10:47:38,046 [analyzer] DEBUG: Loaded monitor into process with pid 2204
2025-08-26 10:47:38,125 [analyzer] INFO: Added new file to list with pid 2636 and path C:\Users\Administrator\AppData\Local\Temp\9C7EA51D-B2B9-4ABB-A82F-1B32707A146E\update.exe
2025-08-26 10:47:38,390 [analyzer] INFO: Added new file to list with pid 2636 and path C:\Users\Administrator\AppData\Local\Temp\hsperfdata_Administrator\backup.exe
2025-08-26 10:47:39,108 [analyzer] INFO: Added new file to list with pid 2204 and path C:\backup.exe
2025-08-26 12:18:30,825 [analyzer] INFO: Analysis timeout hit, terminating analysis.
2025-08-26 12:18:31,278 [analyzer] INFO: Terminating remaining processes before shutdown.
2025-08-26 12:18:31,278 [lib.api.process] INFO: Successfully terminated process with pid 2636.
2025-08-26 12:18:31,278 [lib.api.process] INFO: Successfully terminated process with pid 2204.
2025-08-26 12:18:31,309 [analyzer] INFO: Analysis completed.

Cuckoo Log

2025-08-26 13:14:58,332 [cuckoo.core.scheduler] INFO: Task #6907259: acquired machine win7x6421 (label=win7x6421)
2025-08-26 13:14:58,333 [cuckoo.core.resultserver] DEBUG: Now tracking machine 192.168.168.221 for task #6907259
2025-08-26 13:14:58,733 [cuckoo.auxiliary.sniffer] INFO: Started sniffer with PID 1975157 (interface=vboxnet0, host=192.168.168.221)
2025-08-26 13:14:58,800 [cuckoo.machinery.virtualbox] DEBUG: Starting vm win7x6421
2025-08-26 13:14:59,421 [cuckoo.machinery.virtualbox] DEBUG: Restoring virtual machine win7x6421 to vmcloak
2025-08-26 13:17:52,633 [cuckoo.core.guest] INFO: Starting analysis #6907259 on guest (id=win7x6421, ip=192.168.168.221)
2025-08-26 13:17:53,656 [cuckoo.core.guest] DEBUG: win7x6421: not ready yet
2025-08-26 13:17:58,687 [cuckoo.core.guest] INFO: Guest is running Cuckoo Agent 0.10 (id=win7x6421, ip=192.168.168.221)
2025-08-26 13:17:58,992 [cuckoo.core.guest] DEBUG: Uploading analyzer to guest (id=win7x6421, ip=192.168.168.221, monitor=latest, size=6660546)
2025-08-26 13:18:00,337 [cuckoo.core.resultserver] DEBUG: Task #6907259: live log analysis.log initialized.
2025-08-26 13:18:01,469 [cuckoo.core.resultserver] DEBUG: Task #6907259 is sending a BSON stream
2025-08-26 13:18:02,006 [cuckoo.core.resultserver] DEBUG: Task #6907259 is sending a BSON stream
2025-08-26 13:18:02,312 [cuckoo.core.resultserver] DEBUG: Task #6907259 is sending a BSON stream
2025-08-26 13:18:02,874 [cuckoo.core.resultserver] DEBUG: Task #6907259: File upload for 'shots/0001.jpg'
2025-08-26 13:18:02,896 [cuckoo.core.resultserver] DEBUG: Task #6907259 uploaded file length: 133508
2025-08-26 13:18:15,325 [cuckoo.core.guest] DEBUG: win7x6421: analysis #6907259 still processing
2025-08-26 13:18:31,084 [cuckoo.core.resultserver] DEBUG: Task #6907259: File upload for 'curtain/1756203511.08.curtain.log'
2025-08-26 13:18:31,087 [cuckoo.core.resultserver] DEBUG: Task #6907259 uploaded file length: 36
2025-08-26 13:18:31,263 [cuckoo.core.resultserver] DEBUG: Task #6907259: File upload for 'sysmon/1756203511.25.sysmon.xml'
2025-08-26 13:18:31,301 [cuckoo.core.resultserver] DEBUG: Task #6907259 uploaded file length: 1498864
2025-08-26 13:18:31,311 [cuckoo.core.resultserver] DEBUG: Task #6907259: File upload for 'files/efbc61114e0a0e32_backup.exe'
2025-08-26 13:18:31,323 [cuckoo.core.resultserver] DEBUG: Task #6907259 uploaded file length: 90412
2025-08-26 13:18:31,328 [cuckoo.core.resultserver] DEBUG: Task #6907259: File upload for 'files/c45be43927ec63cf_update.exe'
2025-08-26 13:18:31,334 [cuckoo.core.resultserver] DEBUG: Task #6907259 uploaded file length: 90412
2025-08-26 13:18:31,344 [cuckoo.core.resultserver] DEBUG: Task #6907259: File upload for 'files/ad5ee1095c92ae95_backup.exe'
2025-08-26 13:18:31,350 [cuckoo.core.resultserver] DEBUG: Task #6907259 uploaded file length: 90414
2025-08-26 13:18:31,510 [cuckoo.core.guest] INFO: win7x6421: analysis completed successfully
2025-08-26 13:18:31,535 [cuckoo.core.plugins] DEBUG: Stopped auxiliary module: Redsocks
2025-08-26 13:18:31,570 [cuckoo.core.plugins] DEBUG: Stopped auxiliary module: Sniffer
2025-08-26 13:18:31,728 [cuckoo.core.resultserver] DEBUG: Task #6907259 had connection reset for <Context for LOG>
2025-08-26 13:18:32,709 [cuckoo.machinery.virtualbox] INFO: Successfully generated memory dump for virtual machine with label win7x6421 to path /srv/cuckoo/cwd/storage/analyses/6907259/memory.dmp
2025-08-26 13:18:32,722 [cuckoo.machinery.virtualbox] DEBUG: Stopping vm win7x6421
2025-08-26 13:21:54,125 [cuckoo.core.resultserver] DEBUG: Stopped tracking machine 192.168.168.221 for task #6907259
2025-08-26 13:21:54,828 [cuckoo.core.scheduler] DEBUG: Released database task #6907259
2025-08-26 13:21:54,842 [cuckoo.core.scheduler] INFO: Task #6907259: analysis procedure completed

Signatures

Yara rules detected for file (2 events)
description (no description) rule UPX
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:\Users\Administrator\AppData\Local\Temp\9C7EA51D-B2B9-4ABB-A82F-1B32707A146E\update.exe
file C:\backup.exe
file C:\Users\Administrator\AppData\Local\Temp\backup.exe
file C:\Users\Administrator\AppData\Local\Temp\hsperfdata_Administrator\backup.exe
Drops an executable to the user AppData folder (2 events)
file C:\Users\Administrator\AppData\Local\Temp\0C7910BA-F902-421E-9E69-CF9AEE0DD4D7\backup.exe
file C:\Users\Administrator\AppData\Local\Temp\9C7EA51D-B2B9-4ABB-A82F-1B32707A146E\update.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: 2636
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 1
length: 24576
protection: 32 (PAGE_EXECUTE_READ)
base_address: 0x00420000
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'UPX1', u'virtual_size': u'0x00004000'} entropy 7.80467716 description A section with a high entropy has been found
entropy 0.392405063291 description Overall entropy of this PE file is high
The executable is compressed using UPX (2 events)
section UPX0 description Section name indicates UPX
section UPX1 description Section name indicates UPX
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 13 AntiVirus engine on IRMA as malicious (13 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
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

We're processing your submission... This could take a few seconds.