Summary

c45be43927ec63cf_update.exe

File c45be43927ec63cf_update.exe

Summary
Download Resubmit sample

Size 88.3KB
Type PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed
MD5 312144bd35cbc7172201700bd31ce138
SHA1 c57e3fba0376ed8017eadfafd9112b50ee6057e3
SHA256 c45be43927ec63cfa8db0c0789b03e5212a48d60a7ac55daae50b17f7a8bff19
SHA512
13f85565b82568f2c668ba8556d751fe4ea6e5806165da8430786db79e5d9805fd72d0d9a1a3d66a6cfa778e60058643dd3f29eb9c27018a5f816c097414eb10
CRC32 58FAA59E
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

Parent_Task_ID:6907259

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, 10:26 p.m. Aug. 26, 2025, 10:35 p.m. 548 seconds internet Show Analyzer Log
Show Cuckoo Log

Analyzer Log

2025-08-26 13:22:39,015 [analyzer] DEBUG: Starting analyzer from: C:\tmp4nivwu
2025-08-26 13:22:39,015 [analyzer] DEBUG: Pipe server name: \??\PIPE\FxZsHNZWpWDWmGNn
2025-08-26 13:22:39,015 [analyzer] DEBUG: Log pipe server name: \??\PIPE\XJGHYpeMgTgevKRAfusDpUrIF
2025-08-26 13:22:39,015 [analyzer] DEBUG: No analysis package specified, trying to detect it automagically.
2025-08-26 13:22:39,030 [analyzer] INFO: Automatically selected analysis package "exe"
2025-08-26 13:22:39,296 [analyzer] DEBUG: Started auxiliary module Curtain
2025-08-26 13:22:39,296 [analyzer] DEBUG: Started auxiliary module DbgView
2025-08-26 13:22:39,828 [analyzer] DEBUG: Started auxiliary module Disguise
2025-08-26 13:22:40,030 [analyzer] DEBUG: Loaded monitor into process with pid 508
2025-08-26 13:22:40,030 [analyzer] DEBUG: Started auxiliary module DumpTLSMasterSecrets
2025-08-26 13:22:40,030 [analyzer] DEBUG: Started auxiliary module Human
2025-08-26 13:22:40,030 [analyzer] DEBUG: Started auxiliary module InstallCertificate
2025-08-26 13:22:40,030 [analyzer] DEBUG: Started auxiliary module Reboot
2025-08-26 13:22:40,140 [analyzer] DEBUG: Started auxiliary module RecentFiles
2025-08-26 13:22:40,140 [analyzer] DEBUG: Started auxiliary module Screenshots
2025-08-26 13:22:40,140 [analyzer] DEBUG: Started auxiliary module Sysmon
2025-08-26 13:22:40,140 [analyzer] DEBUG: Started auxiliary module LoadZer0m0n
2025-08-26 13:22:40,280 [lib.api.process] INFO: Successfully executed process from path u'C:\\Users\\ADMINI~1\\AppData\\Local\\Temp\\c45be43927ec63cf_update.exe' with arguments '' and pid 1360
2025-08-26 13:22:40,578 [analyzer] DEBUG: Loaded monitor into process with pid 1360
2025-08-26 13:22:40,655 [analyzer] INFO: Added new file to list with pid 1360 and path C:\Users\Administrator\AppData\Local\Temp\backup.exe
2025-08-26 13:22:40,671 [analyzer] INFO: Added new file to list with pid 1360 and path C:\Users\Administrator\AppData\Local\Temp\0C7910BA-F902-421E-9E69-CF9AEE0DD4D7\backup.exe
2025-08-26 13:22:40,733 [analyzer] INFO: Injected into process with pid 2132 and name ''
2025-08-26 13:22:40,953 [analyzer] DEBUG: Loaded monitor into process with pid 2132
2025-08-26 13:22:41,030 [analyzer] INFO: Added new file to list with pid 1360 and path C:\Users\Administrator\AppData\Local\Temp\9C7EA51D-B2B9-4ABB-A82F-1B32707A146E\backup.exe
2025-08-26 13:22:41,140 [analyzer] INFO: Added new file to list with pid 1360 and path C:\Users\Administrator\AppData\Local\Temp\hsperfdata_Administrator\backup.exe
2025-08-26 13:22:42,000 [analyzer] INFO: Added new file to list with pid 2132 and path C:\backup.exe
2025-08-26 21:33:03,891 [analyzer] INFO: Analysis timeout hit, terminating analysis.
2025-08-26 21:33:05,671 [analyzer] INFO: Terminating remaining processes before shutdown.
2025-08-26 21:33:05,671 [lib.api.process] INFO: Successfully terminated process with pid 1360.
2025-08-26 21:33:05,671 [lib.api.process] INFO: Successfully terminated process with pid 2132.
2025-08-26 21:33:05,703 [analyzer] INFO: Analysis completed.

Cuckoo Log

2025-08-26 22:26:47,864 [cuckoo.core.scheduler] INFO: Task #6909746: acquired machine win7x6424 (label=win7x6424)
2025-08-26 22:26:47,865 [cuckoo.core.resultserver] DEBUG: Now tracking machine 192.168.168.224 for task #6909746
2025-08-26 22:26:48,346 [cuckoo.auxiliary.sniffer] INFO: Started sniffer with PID 2912763 (interface=vboxnet0, host=192.168.168.224)
2025-08-26 22:26:48,430 [cuckoo.machinery.virtualbox] DEBUG: Starting vm win7x6424
2025-08-26 22:26:49,115 [cuckoo.machinery.virtualbox] DEBUG: Restoring virtual machine win7x6424 to vmcloak
2025-08-26 22:29:36,065 [cuckoo.core.guest] INFO: Starting analysis #6909746 on guest (id=win7x6424, ip=192.168.168.224)
2025-08-26 22:29:37,071 [cuckoo.core.guest] DEBUG: win7x6424: not ready yet
2025-08-26 22:29:42,135 [cuckoo.core.guest] INFO: Guest is running Cuckoo Agent 0.10 (id=win7x6424, ip=192.168.168.224)
2025-08-26 22:29:42,236 [cuckoo.core.guest] DEBUG: Uploading analyzer to guest (id=win7x6424, ip=192.168.168.224, monitor=latest, size=6660546)
2025-08-26 22:29:43,572 [cuckoo.core.resultserver] DEBUG: Task #6909746: live log analysis.log initialized.
2025-08-26 22:29:44,630 [cuckoo.core.resultserver] DEBUG: Task #6909746 is sending a BSON stream
2025-08-26 22:29:45,088 [cuckoo.core.resultserver] DEBUG: Task #6909746 is sending a BSON stream
2025-08-26 22:29:45,539 [cuckoo.core.resultserver] DEBUG: Task #6909746 is sending a BSON stream
2025-08-26 22:29:45,833 [cuckoo.core.resultserver] DEBUG: Task #6909746: File upload for 'shots/0001.jpg'
2025-08-26 22:29:46,180 [cuckoo.core.resultserver] DEBUG: Task #6909746 uploaded file length: 133479
2025-08-26 22:29:58,534 [cuckoo.core.guest] DEBUG: win7x6424: analysis #6909746 still processing
2025-08-26 22:30:13,667 [cuckoo.core.guest] DEBUG: win7x6424: analysis #6909746 still processing
2025-08-26 22:30:28,927 [cuckoo.core.guest] DEBUG: win7x6424: analysis #6909746 still processing
2025-08-26 22:30:44,025 [cuckoo.core.guest] DEBUG: win7x6424: analysis #6909746 still processing
2025-08-26 22:30:59,130 [cuckoo.core.guest] DEBUG: win7x6424: analysis #6909746 still processing
2025-08-26 22:31:14,264 [cuckoo.core.guest] DEBUG: win7x6424: analysis #6909746 still processing
2025-08-26 22:31:29,718 [cuckoo.core.guest] DEBUG: win7x6424: analysis #6909746 still processing
2025-08-26 22:31:44,905 [cuckoo.core.guest] DEBUG: win7x6424: analysis #6909746 still processing
2025-08-26 22:31:59,998 [cuckoo.core.guest] DEBUG: win7x6424: analysis #6909746 still processing
2025-08-26 22:32:15,265 [cuckoo.core.guest] DEBUG: win7x6424: analysis #6909746 still processing
2025-08-26 22:32:30,360 [cuckoo.core.guest] DEBUG: win7x6424: analysis #6909746 still processing
2025-08-26 22:32:45,497 [cuckoo.core.guest] DEBUG: win7x6424: analysis #6909746 still processing
2025-08-26 22:33:01,375 [cuckoo.core.guest] DEBUG: win7x6424: analysis #6909746 still processing
2025-08-26 22:33:04,110 [cuckoo.core.resultserver] DEBUG: Task #6909746: File upload for 'curtain/1756236784.11.curtain.log'
2025-08-26 22:33:04,113 [cuckoo.core.resultserver] DEBUG: Task #6909746 uploaded file length: 36
2025-08-26 22:33:05,525 [cuckoo.core.resultserver] DEBUG: Task #6909746: File upload for 'sysmon/1756236785.52.sysmon.xml'
2025-08-26 22:33:05,676 [cuckoo.core.resultserver] DEBUG: Task #6909746 uploaded file length: 19778532
2025-08-26 22:33:05,745 [cuckoo.core.resultserver] DEBUG: Task #6909746 had connection reset for <Context for LOG>
2025-08-26 22:33:05,747 [cuckoo.core.resultserver] DEBUG: Task #6909746: File upload for 'files/59b07b9384814643_backup.exe'
2025-08-26 22:33:05,749 [cuckoo.core.resultserver] DEBUG: Task #6909746: File upload for 'files/b14f441052433951_backup.exe'
2025-08-26 22:33:05,751 [cuckoo.core.resultserver] DEBUG: Task #6909746 uploaded file length: 90416
2025-08-26 22:33:05,752 [cuckoo.core.resultserver] DEBUG: Task #6909746: File upload for 'files/cc4c639ec4d94bbb_backup.exe'
2025-08-26 22:33:05,767 [cuckoo.core.resultserver] DEBUG: Task #6909746 uploaded file length: 90414
2025-08-26 22:33:05,769 [cuckoo.core.resultserver] DEBUG: Task #6909746 uploaded file length: 90414
2025-08-26 22:33:07,419 [cuckoo.core.guest] INFO: win7x6424: analysis completed successfully
2025-08-26 22:33:07,434 [cuckoo.core.plugins] DEBUG: Stopped auxiliary module: Redsocks
2025-08-26 22:33:07,449 [cuckoo.core.plugins] DEBUG: Stopped auxiliary module: Sniffer
2025-08-26 22:33:08,720 [cuckoo.machinery.virtualbox] INFO: Successfully generated memory dump for virtual machine with label win7x6424 to path /srv/cuckoo/cwd/storage/analyses/6909746/memory.dmp
2025-08-26 22:33:08,744 [cuckoo.machinery.virtualbox] DEBUG: Stopping vm win7x6424
2025-08-26 22:35:55,266 [cuckoo.core.resultserver] DEBUG: Stopped tracking machine 192.168.168.224 for task #6909746
2025-08-26 22:35:55,700 [cuckoo.core.scheduler] DEBUG: Released database task #6909746
2025-08-26 22:35:55,712 [cuckoo.core.scheduler] INFO: Task #6909746: 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
Allocates read-write-execute memory (usually to unpack itself) (6 events)
Time & API Arguments Status Return Repeated

NtProtectVirtualMemory

 process_identifier: 1360
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 0
length: 4096
protection: 64 (PAGE_EXECUTE_READWRITE)
base_address: 0x73bc1000
process_handle: 0xffffffff
1 0 0

NtProtectVirtualMemory

 process_identifier: 1360
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 0
length: 4096
protection: 64 (PAGE_EXECUTE_READWRITE)
base_address: 0x732e1000
process_handle: 0xffffffff
1 0 0

NtProtectVirtualMemory

 process_identifier: 1360
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 0
length: 4096
protection: 64 (PAGE_EXECUTE_READWRITE)
base_address: 0x74211000
process_handle: 0xffffffff
1 0 0

NtProtectVirtualMemory

 process_identifier: 2132
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 0
length: 4096
protection: 64 (PAGE_EXECUTE_READWRITE)
base_address: 0x73bc1000
process_handle: 0xffffffff
1 0 0

NtProtectVirtualMemory

 process_identifier: 2132
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 0
length: 4096
protection: 64 (PAGE_EXECUTE_READWRITE)
base_address: 0x732e1000
process_handle: 0xffffffff
1 0 0

NtProtectVirtualMemory

 process_identifier: 2132
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 0
length: 4096
protection: 64 (PAGE_EXECUTE_READWRITE)
base_address: 0x74211000
process_handle: 0xffffffff
1 0 0
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: 1360
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 1
length: 24576
protection: 32 (PAGE_EXECUTE_READ)
base_address: 0x00370000
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 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

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