Summary

a7af2569fed576a3acab402888694f819003701dced2be334c555620ddbd35cc

File a7af2569fed576a3acab402888694f819003701dced2be334c555620ddbd35cc

Summary
Download Resubmit sample

Size 82.2KB
Type PE32 executable (GUI) Intel 80386 (stripped to external PDB), for MS Windows, UPX compressed
MD5 8e40a3100c8cd3aa06b08e964ea25768
SHA1 7afd70271de061ee2cdaccadf09775902b6d4777
SHA256 a7af2569fed576a3acab402888694f819003701dced2be334c555620ddbd35cc
SHA512
37bef6e3d0732875e49f2ab1bc751b6a09e5d8a4b72f904e8cbd2ecf9299f4fb9ee706def7bb3fd06886c820c16dc4eb3e03d5e5fd0f08b73c1b901dd39f1e3b
CRC32 4ACE5832
ssdeep None
Yara
  • suspicious_packer_section - The packer/protector section names/keywords
  • SEH__vba - (no description)
  • escalate_priv - Escalade priviledges
  • win_mutex - Create or check mutex
  • win_registry - Affect system registries
  • win_token - Affect system token

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

6755835

6755836

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Information on Execution

Analysis
Category Started Completed Duration Routing Logs
FILE July 20, 2025, 12:37 p.m. July 20, 2025, 12:43 p.m. 309 seconds internet Show Analyzer Log
Show Cuckoo Log

Analyzer Log

2025-07-18 11:07:14,000 [analyzer] DEBUG: Starting analyzer from: C:\tmpmdfut4
2025-07-18 11:07:14,015 [analyzer] DEBUG: Pipe server name: \??\PIPE\KxkJPdTQTGMzOyRIeDB
2025-07-18 11:07:14,015 [analyzer] DEBUG: Log pipe server name: \??\PIPE\vzbSyoAxHadiShUuxoS
2025-07-18 11:07:14,342 [analyzer] DEBUG: Started auxiliary module Curtain
2025-07-18 11:07:14,342 [analyzer] DEBUG: Started auxiliary module DbgView
2025-07-18 11:07:14,796 [analyzer] DEBUG: Started auxiliary module Disguise
2025-07-18 11:07:15,015 [analyzer] DEBUG: Loaded monitor into process with pid 504
2025-07-18 11:07:15,015 [analyzer] DEBUG: Started auxiliary module DumpTLSMasterSecrets
2025-07-18 11:07:15,015 [analyzer] DEBUG: Started auxiliary module Human
2025-07-18 11:07:15,015 [analyzer] DEBUG: Started auxiliary module InstallCertificate
2025-07-18 11:07:15,015 [analyzer] DEBUG: Started auxiliary module Reboot
2025-07-18 11:07:15,108 [analyzer] DEBUG: Started auxiliary module RecentFiles
2025-07-18 11:07:15,108 [analyzer] DEBUG: Started auxiliary module Screenshots
2025-07-18 11:07:15,125 [analyzer] DEBUG: Started auxiliary module Sysmon
2025-07-18 11:07:15,125 [analyzer] DEBUG: Started auxiliary module LoadZer0m0n
2025-07-18 11:07:15,250 [lib.api.process] INFO: Successfully executed process from path u'C:\\Users\\ADMINI~1\\AppData\\Local\\Temp\\a7af2569fed576a3acab402888694f819003701dced2be334c555620ddbd35cc.exe' with arguments '' and pid 572
2025-07-18 11:07:15,467 [analyzer] DEBUG: Loaded monitor into process with pid 572
2025-07-18 11:07:15,546 [analyzer] INFO: Added new file to list with pid 572 and path C:\Users\Administrator\AppData\Local\Temp\backup.exe
2025-07-18 11:07:15,562 [analyzer] INFO: Added new file to list with pid 572 and path C:\Users\Administrator\AppData\Local\Temp\0C7910BA-F902-421E-9E69-CF9AEE0DD4D7\backup.exe
2025-07-18 11:07:15,655 [analyzer] INFO: Injected into process with pid 2892 and name ''
2025-07-18 11:07:15,828 [analyzer] DEBUG: Loaded monitor into process with pid 2892
2025-07-18 11:07:15,905 [analyzer] INFO: Added new file to list with pid 572 and path C:\Users\Administrator\AppData\Local\Temp\9C7EA51D-B2B9-4ABB-A82F-1B32707A146E\backup.exe
2025-07-18 11:07:16,000 [analyzer] INFO: Added new file to list with pid 572 and path C:\Users\Administrator\AppData\Local\Temp\hsperfdata_Administrator\backup.exe
2025-07-18 11:07:16,875 [analyzer] INFO: Added new file to list with pid 2892 and path C:\backup.exe
2025-07-18 11:07:44,265 [analyzer] INFO: Analysis timeout hit, terminating analysis.
2025-07-18 11:07:44,765 [analyzer] INFO: Terminating remaining processes before shutdown.
2025-07-18 11:07:44,765 [lib.api.process] INFO: Successfully terminated process with pid 572.
2025-07-18 11:07:44,765 [lib.api.process] INFO: Successfully terminated process with pid 2892.
2025-07-18 11:07:44,780 [analyzer] INFO: Analysis completed.

Cuckoo Log

2025-07-20 12:37:55,763 [cuckoo.core.scheduler] INFO: Task #6746929: acquired machine win7x644 (label=win7x644)
2025-07-20 12:37:55,764 [cuckoo.core.resultserver] DEBUG: Now tracking machine 192.168.168.204 for task #6746929
2025-07-20 12:37:56,307 [cuckoo.auxiliary.sniffer] INFO: Started sniffer with PID 2961506 (interface=vboxnet0, host=192.168.168.204)
2025-07-20 12:37:56,396 [cuckoo.machinery.virtualbox] DEBUG: Starting vm win7x644
2025-07-20 12:37:57,634 [cuckoo.machinery.virtualbox] DEBUG: Restoring virtual machine win7x644 to vmcloak
2025-07-20 12:40:09,504 [cuckoo.core.guest] INFO: Starting analysis #6746929 on guest (id=win7x644, ip=192.168.168.204)
2025-07-20 12:40:10,517 [cuckoo.core.guest] DEBUG: win7x644: not ready yet
2025-07-20 12:40:15,750 [cuckoo.core.guest] INFO: Guest is running Cuckoo Agent 0.10 (id=win7x644, ip=192.168.168.204)
2025-07-20 12:40:15,861 [cuckoo.core.guest] DEBUG: Uploading analyzer to guest (id=win7x644, ip=192.168.168.204, monitor=latest, size=6660546)
2025-07-20 12:40:17,315 [cuckoo.core.resultserver] DEBUG: Task #6746929: live log analysis.log initialized.
2025-07-20 12:40:18,397 [cuckoo.core.resultserver] DEBUG: Task #6746929 is sending a BSON stream
2025-07-20 12:40:18,746 [cuckoo.core.resultserver] DEBUG: Task #6746929 is sending a BSON stream
2025-07-20 12:40:19,086 [cuckoo.core.resultserver] DEBUG: Task #6746929 is sending a BSON stream
2025-07-20 12:40:19,566 [cuckoo.core.resultserver] DEBUG: Task #6746929: File upload for 'shots/0001.jpg'
2025-07-20 12:40:19,583 [cuckoo.core.resultserver] DEBUG: Task #6746929 uploaded file length: 133529
2025-07-20 12:40:31,995 [cuckoo.core.guest] DEBUG: win7x644: analysis #6746929 still processing
2025-07-20 12:40:47,094 [cuckoo.core.guest] DEBUG: win7x644: analysis #6746929 still processing
2025-07-20 12:40:47,888 [cuckoo.core.resultserver] DEBUG: Task #6746929: File upload for 'curtain/1752829664.53.curtain.log'
2025-07-20 12:40:47,893 [cuckoo.core.resultserver] DEBUG: Task #6746929 uploaded file length: 36
2025-07-20 12:40:48,079 [cuckoo.core.resultserver] DEBUG: Task #6746929: File upload for 'sysmon/1752829664.73.sysmon.xml'
2025-07-20 12:40:48,099 [cuckoo.core.resultserver] DEBUG: Task #6746929 uploaded file length: 1262440
2025-07-20 12:40:48,107 [cuckoo.core.resultserver] DEBUG: Task #6746929: File upload for 'files/541e4b1225d48f5a_backup.exe'
2025-07-20 12:40:48,110 [cuckoo.core.resultserver] DEBUG: Task #6746929 uploaded file length: 84158
2025-07-20 12:40:48,113 [cuckoo.core.resultserver] DEBUG: Task #6746929: File upload for 'files/a8bb8d43053b171d_backup.exe'
2025-07-20 12:40:48,116 [cuckoo.core.resultserver] DEBUG: Task #6746929 uploaded file length: 84160
2025-07-20 12:40:48,124 [cuckoo.core.resultserver] DEBUG: Task #6746929: File upload for 'files/97e9a89d47a075e0_backup.exe'
2025-07-20 12:40:48,129 [cuckoo.core.resultserver] DEBUG: Task #6746929 uploaded file length: 84158
2025-07-20 12:40:48,462 [cuckoo.core.resultserver] DEBUG: Task #6746929 had connection reset for <Context for LOG>
2025-07-20 12:40:50,111 [cuckoo.core.guest] INFO: win7x644: analysis completed successfully
2025-07-20 12:40:50,127 [cuckoo.core.plugins] DEBUG: Stopped auxiliary module: Redsocks
2025-07-20 12:40:50,155 [cuckoo.core.plugins] DEBUG: Stopped auxiliary module: Sniffer
2025-07-20 12:40:51,543 [cuckoo.machinery.virtualbox] INFO: Successfully generated memory dump for virtual machine with label win7x644 to path /srv/cuckoo/cwd/storage/analyses/6746929/memory.dmp
2025-07-20 12:40:51,545 [cuckoo.machinery.virtualbox] DEBUG: Stopping vm win7x644
2025-07-20 12:43:04,755 [cuckoo.core.resultserver] DEBUG: Stopped tracking machine 192.168.168.204 for task #6746929
2025-07-20 12:43:05,159 [cuckoo.core.scheduler] DEBUG: Released database task #6746929
2025-07-20 12:43:05,176 [cuckoo.core.scheduler] INFO: Task #6746929: analysis procedure completed

Signatures

Yara rules detected for file (6 events)
description The packer/protector section names/keywords rule suspicious_packer_section
description (no description) rule SEH__vba
description Escalade priviledges rule escalate_priv
description Create or check mutex rule win_mutex
description Affect system registries rule win_registry
description Affect system token rule win_token
The executable contains unknown PE section names indicative of a packer (could be a false positive) (1 event)
section .imports
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: 572
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 1
length: 24576
protection: 32 (PAGE_EXECUTE_READ)
base_address: 0x02310000
process_handle: 0xffffffff
1 0 0
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.GenericKD.44959075 (Engine A), Win32.Trojan.Vilsel.A (Engine B)
Avast Core Security (Linux) Win32:Vilsel-CT [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/Dropper.Gen
eScan Antivirus (Linux) Trojan.GenericKD.44959075(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.GenericKD.44959075
Kaspersky Standard (Windows) Trojan.Win32.Vilsel.loy
Emsisoft Commandline Scanner (Windows) Trojan.GenericKD.44959075 (B)
Screenshots
Name Response Post-Analysis Lookup
No hosts contacted.
IP Address Status Action VT Location
No hosts contacted.
Cuckoo

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