Summary

b5152728d0ad47d0_backup.exe

File b5152728d0ad47d0_backup.exe

Summary
Download Resubmit sample

Size 92.3KB
Type PE32 executable (GUI) Intel 80386 (stripped to external PDB), for MS Windows, UPX compressed
MD5 453a4941b06424729dda0917700a0673
SHA1 903c509acb513edf2d778c6b0405b71768302bdd
SHA256 b5152728d0ad47d0589b11812a1be9244d3c0093f5c4c2f277a532c93caf30d5
SHA512
77f2cdb39b09d19ec5204497c9941c98a69da15e84015b305aeba64cc78b8977e5343cb5a4a3b4df33b21748e8311f5f4db1fc38793a5d7ccf84a922ce0ca37b
CRC32 36559EBC
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:6700450

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Information on Execution

Analysis
Category Started Completed Duration Routing Logs
FILE July 17, 2025, 4:25 p.m. July 17, 2025, 4:32 p.m. 435 seconds internet Show Analyzer Log
Show Cuckoo Log

Analyzer Log

2025-07-13 19:47:13,015 [analyzer] DEBUG: Starting analyzer from: C:\tmp4nivwu
2025-07-13 19:47:13,030 [analyzer] DEBUG: Pipe server name: \??\PIPE\wTZVNIhBLzmLeeomdEKoTjMZYbJbEli
2025-07-13 19:47:13,030 [analyzer] DEBUG: Log pipe server name: \??\PIPE\qEGynEvXRCjAsPAmbchaxybRrO
2025-07-13 19:47:13,030 [analyzer] DEBUG: No analysis package specified, trying to detect it automagically.
2025-07-13 19:47:13,030 [analyzer] INFO: Automatically selected analysis package "exe"
2025-07-13 19:47:13,312 [analyzer] DEBUG: Started auxiliary module Curtain
2025-07-13 19:47:13,312 [analyzer] DEBUG: Started auxiliary module DbgView
2025-07-13 19:47:13,890 [analyzer] DEBUG: Started auxiliary module Disguise
2025-07-13 19:47:14,092 [analyzer] DEBUG: Loaded monitor into process with pid 508
2025-07-13 19:47:14,092 [analyzer] DEBUG: Started auxiliary module DumpTLSMasterSecrets
2025-07-13 19:47:14,092 [analyzer] DEBUG: Started auxiliary module Human
2025-07-13 19:47:14,092 [analyzer] DEBUG: Started auxiliary module InstallCertificate
2025-07-13 19:47:14,092 [analyzer] DEBUG: Started auxiliary module Reboot
2025-07-13 19:47:14,140 [analyzer] DEBUG: Started auxiliary module RecentFiles
2025-07-13 19:47:14,140 [analyzer] DEBUG: Started auxiliary module Screenshots
2025-07-13 19:47:14,140 [analyzer] DEBUG: Started auxiliary module Sysmon
2025-07-13 19:47:14,140 [analyzer] DEBUG: Started auxiliary module LoadZer0m0n
2025-07-13 19:47:14,280 [lib.api.process] INFO: Successfully executed process from path u'C:\\Users\\ADMINI~1\\AppData\\Local\\Temp\\b5152728d0ad47d0_backup.exe' with arguments '' and pid 1360
2025-07-13 19:47:14,500 [analyzer] DEBUG: Loaded monitor into process with pid 1360
2025-07-13 19:47:14,562 [analyzer] INFO: Added new file to list with pid 1360 and path C:\Users\Administrator\AppData\Local\Temp\backup.exe
2025-07-13 19:47:14,578 [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
2025-07-13 19:47:14,640 [analyzer] INFO: Injected into process with pid 1380 and name ''
2025-07-13 19:47:14,812 [analyzer] DEBUG: Loaded monitor into process with pid 1380
2025-07-13 19:47:14,890 [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
2025-07-13 19:47:14,967 [analyzer] INFO: Added new file to list with pid 1360 and path C:\Users\Administrator\AppData\Local\Temp\hsperfdata_Administrator\backup.exe
2025-07-13 19:47:15,858 [analyzer] INFO: Added new file to list with pid 1380 and path C:\backup.exe
2025-07-13 19:50:33,280 [analyzer] INFO: Analysis timeout hit, terminating analysis.
2025-07-13 19:50:34,265 [analyzer] INFO: Terminating remaining processes before shutdown.
2025-07-13 19:50:34,265 [lib.api.process] INFO: Successfully terminated process with pid 1360.
2025-07-13 19:50:34,265 [lib.api.process] INFO: Successfully terminated process with pid 1380.
2025-07-13 19:50:34,280 [analyzer] INFO: Analysis completed.

Cuckoo Log

2025-07-17 16:25:25,158 [cuckoo.core.scheduler] INFO: Task #6727575: acquired machine win7x6424 (label=win7x6424)
2025-07-17 16:25:25,159 [cuckoo.core.resultserver] DEBUG: Now tracking machine 192.168.168.224 for task #6727575
2025-07-17 16:25:25,701 [cuckoo.auxiliary.sniffer] INFO: Started sniffer with PID 598349 (interface=vboxnet0, host=192.168.168.224)
2025-07-17 16:25:25,816 [cuckoo.machinery.virtualbox] DEBUG: Starting vm win7x6424
2025-07-17 16:25:27,079 [cuckoo.machinery.virtualbox] DEBUG: Restoring virtual machine win7x6424 to vmcloak
2025-07-17 16:27:28,492 [cuckoo.core.guest] INFO: Starting analysis #6727575 on guest (id=win7x6424, ip=192.168.168.224)
2025-07-17 16:27:29,498 [cuckoo.core.guest] DEBUG: win7x6424: not ready yet
2025-07-17 16:27:34,523 [cuckoo.core.guest] INFO: Guest is running Cuckoo Agent 0.10 (id=win7x6424, ip=192.168.168.224)
2025-07-17 16:27:34,807 [cuckoo.core.guest] DEBUG: Uploading analyzer to guest (id=win7x6424, ip=192.168.168.224, monitor=latest, size=6660546)
2025-07-17 16:27:36,036 [cuckoo.core.resultserver] DEBUG: Task #6727575: live log analysis.log initialized.
2025-07-17 16:27:37,071 [cuckoo.core.resultserver] DEBUG: Task #6727575 is sending a BSON stream
2025-07-17 16:27:37,463 [cuckoo.core.resultserver] DEBUG: Task #6727575 is sending a BSON stream
2025-07-17 16:27:37,774 [cuckoo.core.resultserver] DEBUG: Task #6727575 is sending a BSON stream
2025-07-17 16:27:38,308 [cuckoo.core.resultserver] DEBUG: Task #6727575: File upload for 'shots/0001.jpg'
2025-07-17 16:27:38,331 [cuckoo.core.resultserver] DEBUG: Task #6727575 uploaded file length: 133460
2025-07-17 16:27:50,726 [cuckoo.core.guest] DEBUG: win7x6424: analysis #6727575 still processing
2025-07-17 16:28:05,803 [cuckoo.core.guest] DEBUG: win7x6424: analysis #6727575 still processing
2025-07-17 16:28:20,878 [cuckoo.core.guest] DEBUG: win7x6424: analysis #6727575 still processing
2025-07-17 16:28:36,515 [cuckoo.core.guest] DEBUG: win7x6424: analysis #6727575 still processing
2025-07-17 16:28:51,703 [cuckoo.core.guest] DEBUG: win7x6424: analysis #6727575 still processing
2025-07-17 16:29:06,901 [cuckoo.core.guest] DEBUG: win7x6424: analysis #6727575 still processing
2025-07-17 16:29:22,327 [cuckoo.core.guest] DEBUG: win7x6424: analysis #6727575 still processing
2025-07-17 16:29:37,610 [cuckoo.core.guest] DEBUG: win7x6424: analysis #6727575 still processing
2025-07-17 16:29:53,251 [cuckoo.core.guest] DEBUG: win7x6424: analysis #6727575 still processing
2025-07-17 16:30:08,385 [cuckoo.core.guest] DEBUG: win7x6424: analysis #6727575 still processing
2025-07-17 16:30:23,630 [cuckoo.core.guest] DEBUG: win7x6424: analysis #6727575 still processing
2025-07-17 16:30:39,211 [cuckoo.core.guest] DEBUG: win7x6424: analysis #6727575 still processing
2025-07-17 16:30:54,832 [cuckoo.core.guest] DEBUG: win7x6424: analysis #6727575 still processing
2025-07-17 16:30:56,494 [cuckoo.core.resultserver] DEBUG: Task #6727575: File upload for 'curtain/1752429033.45.curtain.log'
2025-07-17 16:30:56,497 [cuckoo.core.resultserver] DEBUG: Task #6727575 uploaded file length: 36
2025-07-17 16:30:57,235 [cuckoo.core.resultserver] DEBUG: Task #6727575: File upload for 'sysmon/1752429034.19.sysmon.xml'
2025-07-17 16:30:57,308 [cuckoo.core.resultserver] DEBUG: Task #6727575 uploaded file length: 11477646
2025-07-17 16:30:57,345 [cuckoo.core.resultserver] DEBUG: Task #6727575: File upload for 'files/1cdbf143c9d16c0d_backup.exe'
2025-07-17 16:30:57,348 [cuckoo.core.resultserver] DEBUG: Task #6727575: File upload for 'files/f6818fd384fa6ceb_backup.exe'
2025-07-17 16:30:57,356 [cuckoo.core.resultserver] DEBUG: Task #6727575 uploaded file length: 94540
2025-07-17 16:30:57,358 [cuckoo.core.resultserver] DEBUG: Task #6727575 had connection reset for <Context for LOG>
2025-07-17 16:30:57,359 [cuckoo.core.resultserver] DEBUG: Task #6727575 uploaded file length: 94542
2025-07-17 16:30:58,171 [cuckoo.core.guest] INFO: win7x6424: analysis completed successfully
2025-07-17 16:30:58,196 [cuckoo.core.plugins] DEBUG: Stopped auxiliary module: Redsocks
2025-07-17 16:30:58,252 [cuckoo.core.plugins] DEBUG: Stopped auxiliary module: Sniffer
2025-07-17 16:30:59,920 [cuckoo.machinery.virtualbox] INFO: Successfully generated memory dump for virtual machine with label win7x6424 to path /srv/cuckoo/cwd/storage/analyses/6727575/memory.dmp
2025-07-17 16:30:59,935 [cuckoo.machinery.virtualbox] DEBUG: Stopping vm win7x6424
2025-07-17 16:32:39,995 [cuckoo.core.resultserver] DEBUG: Stopped tracking machine 192.168.168.224 for task #6727575
2025-07-17 16:32:40,382 [cuckoo.core.scheduler] DEBUG: Released database task #6727575
2025-07-17 16:32:40,401 [cuckoo.core.scheduler] INFO: Task #6727575: 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: 1360
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 13 AntiVirus engine on IRMA as malicious (13 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
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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