Summary

44a0f356759d65a2_backup.exe

File 44a0f356759d65a2_backup.exe

Summary
Download Resubmit sample Download yara

Size 92.3KB
Type PE32 executable (GUI) Intel 80386 (stripped to external PDB), for MS Windows, UPX compressed
MD5 c9b74441a6dc3703238eb881f0b60772
SHA1 9f9bcf9c5c470605a4f73da24aadcb89f90655ae
SHA256 44a0f356759d65a29e937af0f0fc8c3c8899963c87e0fcccdf12e490329ad5a4
SHA512
7f33a3867f65f8c4954383be1b030a8d541cfbaecaf9dfba8ecd84b5e20a107cb2b1a6590d19c57fb6cc8737ff4a8d8646bc8d4cc4e70667fe41692de2333905
CRC32 3CD60AF6
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

Parent_Task_ID:6702952

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Information on Execution

Analysis
Category Started Completed Duration Routing Logs
FILE July 18, 2025, 4:38 a.m. July 18, 2025, 5:26 a.m. 2892 seconds internet Show Analyzer Log
Show Cuckoo Log

Analyzer Log

2025-07-14 05:12:28,000 [analyzer] DEBUG: Starting analyzer from: C:\tmp2pjrvv
2025-07-14 05:12:28,015 [analyzer] DEBUG: Pipe server name: \??\PIPE\egCWDorwbJmSnKIAMZBJCzQOKfBWPxR
2025-07-14 05:12:28,015 [analyzer] DEBUG: Log pipe server name: \??\PIPE\lUTQnllVQhmoMnWbHSQ
2025-07-14 05:12:28,015 [analyzer] DEBUG: No analysis package specified, trying to detect it automagically.
2025-07-14 05:12:28,030 [analyzer] INFO: Automatically selected analysis package "exe"
2025-07-14 05:12:28,328 [analyzer] DEBUG: Started auxiliary module Curtain
2025-07-14 05:12:28,328 [analyzer] DEBUG: Started auxiliary module DbgView
2025-07-14 05:12:28,733 [analyzer] DEBUG: Started auxiliary module Disguise
2025-07-14 05:12:28,953 [analyzer] DEBUG: Loaded monitor into process with pid 504
2025-07-14 05:12:28,953 [analyzer] DEBUG: Started auxiliary module DumpTLSMasterSecrets
2025-07-14 05:12:28,953 [analyzer] DEBUG: Started auxiliary module Human
2025-07-14 05:12:28,953 [analyzer] DEBUG: Started auxiliary module InstallCertificate
2025-07-14 05:12:28,953 [analyzer] DEBUG: Started auxiliary module Reboot
2025-07-14 05:12:29,030 [analyzer] DEBUG: Started auxiliary module RecentFiles
2025-07-14 05:12:29,030 [analyzer] DEBUG: Started auxiliary module Screenshots
2025-07-14 05:12:29,030 [analyzer] DEBUG: Started auxiliary module Sysmon
2025-07-14 05:12:29,030 [analyzer] DEBUG: Started auxiliary module LoadZer0m0n
2025-07-14 05:12:29,217 [lib.api.process] INFO: Successfully executed process from path u'C:\\Users\\ADMINI~1\\AppData\\Local\\Temp\\44a0f356759d65a2_backup.exe' with arguments '' and pid 1372
2025-07-14 05:12:29,437 [analyzer] DEBUG: Loaded monitor into process with pid 1372
2025-07-14 05:12:29,500 [analyzer] INFO: Added new file to list with pid 1372 and path C:\Users\Administrator\AppData\Local\Temp\backup.exe
2025-07-14 05:12:29,515 [analyzer] INFO: Added new file to list with pid 1372 and path C:\Users\Administrator\AppData\Local\Temp\0C7910BA-F902-421E-9E69-CF9AEE0DD4D7\System Restore.exe
2025-07-14 05:12:29,578 [analyzer] INFO: Injected into process with pid 692 and name ''
2025-07-14 05:12:29,733 [analyzer] DEBUG: Loaded monitor into process with pid 692
2025-07-14 05:12:29,796 [analyzer] INFO: Added new file to list with pid 1372 and path C:\Users\Administrator\AppData\Local\Temp\9C7EA51D-B2B9-4ABB-A82F-1B32707A146E\backup.exe
2025-07-14 05:12:29,890 [analyzer] INFO: Added new file to list with pid 1372 and path C:\Users\Administrator\AppData\Local\Temp\hsperfdata_Administrator\backup.exe
2025-07-14 05:12:30,780 [analyzer] INFO: Added new file to list with pid 692 and path C:\System Restore.exe
2025-07-14 05:15:48,217 [analyzer] INFO: Analysis timeout hit, terminating analysis.
2025-07-14 05:15:49,421 [analyzer] INFO: Terminating remaining processes before shutdown.
2025-07-14 05:15:49,437 [lib.api.process] INFO: Successfully terminated process with pid 1372.
2025-07-14 05:15:49,437 [lib.api.process] INFO: Successfully terminated process with pid 692.
2025-07-14 05:15:49,453 [analyzer] INFO: Analysis completed.

Cuckoo Log

2025-07-18 04:38:11,614 [cuckoo.core.scheduler] INFO: Task #6729907: acquired machine win7x648 (label=win7x648)
2025-07-18 04:38:11,618 [cuckoo.core.resultserver] DEBUG: Now tracking machine 192.168.168.208 for task #6729907
2025-07-18 04:38:11,885 [cuckoo.auxiliary.sniffer] INFO: Started sniffer with PID 1714442 (interface=vboxnet0, host=192.168.168.208)
2025-07-18 04:38:12,006 [cuckoo.machinery.virtualbox] DEBUG: Starting vm win7x648
2025-07-18 04:38:12,869 [cuckoo.machinery.virtualbox] DEBUG: Restoring virtual machine win7x648 to vmcloak
2025-07-18 04:40:28,092 [cuckoo.core.guest] INFO: Starting analysis #6729907 on guest (id=win7x648, ip=192.168.168.208)
2025-07-18 04:40:29,098 [cuckoo.core.guest] DEBUG: win7x648: not ready yet
2025-07-18 04:40:34,134 [cuckoo.core.guest] INFO: Guest is running Cuckoo Agent 0.10 (id=win7x648, ip=192.168.168.208)
2025-07-18 04:40:34,429 [cuckoo.core.guest] DEBUG: Uploading analyzer to guest (id=win7x648, ip=192.168.168.208, monitor=latest, size=6660546)
2025-07-18 04:40:35,658 [cuckoo.core.resultserver] DEBUG: Task #6729907: live log analysis.log initialized.
2025-07-18 04:40:36,563 [cuckoo.core.resultserver] DEBUG: Task #6729907 is sending a BSON stream
2025-07-18 04:40:37,049 [cuckoo.core.resultserver] DEBUG: Task #6729907 is sending a BSON stream
2025-07-18 04:40:37,324 [cuckoo.core.resultserver] DEBUG: Task #6729907 is sending a BSON stream
2025-07-18 04:40:37,807 [cuckoo.core.resultserver] DEBUG: Task #6729907: File upload for 'shots/0001.jpg'
2025-07-18 04:40:37,821 [cuckoo.core.resultserver] DEBUG: Task #6729907 uploaded file length: 133446
2025-07-18 04:40:50,348 [cuckoo.core.guest] DEBUG: win7x648: analysis #6729907 still processing
2025-07-18 04:41:05,481 [cuckoo.core.guest] DEBUG: win7x648: analysis #6729907 still processing
2025-07-18 04:41:20,728 [cuckoo.core.guest] DEBUG: win7x648: analysis #6729907 still processing
2025-07-18 04:41:35,936 [cuckoo.core.guest] DEBUG: win7x648: analysis #6729907 still processing
2025-07-18 04:41:51,052 [cuckoo.core.guest] DEBUG: win7x648: analysis #6729907 still processing
2025-07-18 04:42:06,175 [cuckoo.core.guest] DEBUG: win7x648: analysis #6729907 still processing
2025-07-18 04:42:21,283 [cuckoo.core.guest] DEBUG: win7x648: analysis #6729907 still processing
2025-07-18 04:42:36,476 [cuckoo.core.guest] DEBUG: win7x648: analysis #6729907 still processing
2025-07-18 04:42:51,684 [cuckoo.core.guest] DEBUG: win7x648: analysis #6729907 still processing
2025-07-18 04:43:06,800 [cuckoo.core.guest] DEBUG: win7x648: analysis #6729907 still processing
2025-07-18 04:43:21,909 [cuckoo.core.guest] DEBUG: win7x648: analysis #6729907 still processing
2025-07-18 04:43:37,030 [cuckoo.core.guest] DEBUG: win7x648: analysis #6729907 still processing
2025-07-18 04:43:52,111 [cuckoo.core.guest] DEBUG: win7x648: analysis #6729907 still processing
2025-07-18 04:43:56,085 [cuckoo.core.resultserver] DEBUG: Task #6729907: File upload for 'curtain/1752462948.41.curtain.log'
2025-07-18 04:43:56,089 [cuckoo.core.resultserver] DEBUG: Task #6729907 uploaded file length: 36
2025-07-18 04:43:56,993 [cuckoo.core.resultserver] DEBUG: Task #6729907: File upload for 'sysmon/1752462949.31.sysmon.xml'
2025-07-18 04:43:57,111 [cuckoo.core.resultserver] DEBUG: Task #6729907 uploaded file length: 12449598
2025-07-18 04:43:57,132 [cuckoo.core.resultserver] DEBUG: Task #6729907: File upload for 'files/cc1063d70799c1d6_system restore.exe'
2025-07-18 04:43:57,135 [cuckoo.core.resultserver] DEBUG: Task #6729907: File upload for 'files/a607a480b0660d75_system restore.exe'
2025-07-18 04:43:57,138 [cuckoo.core.resultserver] DEBUG: Task #6729907 uploaded file length: 94494
2025-07-18 04:43:57,145 [cuckoo.core.resultserver] DEBUG: Task #6729907 uploaded file length: 94496
2025-07-18 04:43:57,153 [cuckoo.core.resultserver] DEBUG: Task #6729907 had connection reset for <Context for LOG>
2025-07-18 04:43:58,140 [cuckoo.core.guest] INFO: win7x648: analysis completed successfully
2025-07-18 04:43:58,155 [cuckoo.core.plugins] DEBUG: Stopped auxiliary module: Redsocks
2025-07-18 04:43:58,177 [cuckoo.core.plugins] DEBUG: Stopped auxiliary module: Sniffer
2025-07-18 04:43:59,132 [cuckoo.machinery.virtualbox] INFO: Successfully generated memory dump for virtual machine with label win7x648 to path /srv/cuckoo/cwd/storage/analyses/6729907/memory.dmp
2025-07-18 04:43:59,134 [cuckoo.machinery.virtualbox] DEBUG: Stopping vm win7x648
2025-07-18 04:45:50,915 [cuckoo.core.resultserver] DEBUG: Stopped tracking machine 192.168.168.208 for task #6729907
2025-07-18 04:45:51,388 [cuckoo.core.scheduler] DEBUG: Released database task #6729907
2025-07-18 05:26:23,734 [cuckoo.core.scheduler] INFO: Task #6729907: 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\System Restore.exe
file C:\Users\Administrator\AppData\Local\Temp\hsperfdata_Administrator\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:\System Restore.exe
Drops an executable to the user AppData folder (1 event)
file C:\Users\Administrator\AppData\Local\Temp\0C7910BA-F902-421E-9E69-CF9AEE0DD4D7\System Restore.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: 1372
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 1
length: 24576
protection: 32 (PAGE_EXECUTE_READ)
base_address: 0x003f0000
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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