Summary

61fb0e75e4f29248_backup.exe

File 61fb0e75e4f29248_backup.exe

Summary
Download Resubmit sample

Size 89.5KB
Type PE32 executable (GUI) Intel 80386, for MS Windows
MD5 e10c8c4bb5bbba3a068afc963cae14b5
SHA1 3cadb4165fcb9f0f5a2fe8412b8e2a21ee6c1666
SHA256 61fb0e75e4f292483b9536af40203f4513f41d4140d74a21f68c4cf52776db6d
SHA512
3c0e63044333ad64624b0f218c2f83357e7d062a3c16ccbbc222d908a90036cea8befdc5e5b078390c94a0b515c95d985d9f64f07349e9a2cd5be79381f48a82
CRC32 D3B9245A
ssdeep None
Yara
  • 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:6687012

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Information on Execution

Analysis
Category Started Completed Duration Routing Logs
FILE July 16, 2025, 6:15 p.m. July 16, 2025, 6:19 p.m. 242 seconds internet Show Analyzer Log
Show Cuckoo Log

Analyzer Log

2025-07-11 18:09:06,030 [analyzer] DEBUG: Starting analyzer from: C:\tmpd0os1j
2025-07-11 18:09:06,046 [analyzer] DEBUG: Pipe server name: \??\PIPE\zgyvUdsnIMINfGvVxarfxwoexUdRQS
2025-07-11 18:09:06,046 [analyzer] DEBUG: Log pipe server name: \??\PIPE\CUxiQvELOUNCkmfQFjBeC
2025-07-11 18:09:06,046 [analyzer] DEBUG: No analysis package specified, trying to detect it automagically.
2025-07-11 18:09:06,062 [analyzer] INFO: Automatically selected analysis package "exe"
2025-07-11 18:09:06,546 [analyzer] DEBUG: Started auxiliary module Curtain
2025-07-11 18:09:06,546 [analyzer] DEBUG: Started auxiliary module DbgView
2025-07-11 18:09:07,062 [analyzer] DEBUG: Started auxiliary module Disguise
2025-07-11 18:09:07,265 [analyzer] DEBUG: Loaded monitor into process with pid 512
2025-07-11 18:09:07,265 [analyzer] DEBUG: Started auxiliary module DumpTLSMasterSecrets
2025-07-11 18:09:07,265 [analyzer] DEBUG: Started auxiliary module Human
2025-07-11 18:09:07,265 [analyzer] DEBUG: Started auxiliary module InstallCertificate
2025-07-11 18:09:07,265 [analyzer] DEBUG: Started auxiliary module Reboot
2025-07-11 18:09:07,342 [analyzer] DEBUG: Started auxiliary module RecentFiles
2025-07-11 18:09:07,342 [analyzer] DEBUG: Started auxiliary module Screenshots
2025-07-11 18:09:07,342 [analyzer] DEBUG: Started auxiliary module Sysmon
2025-07-11 18:09:07,342 [analyzer] DEBUG: Started auxiliary module LoadZer0m0n
2025-07-11 18:09:07,546 [lib.api.process] INFO: Successfully executed process from path u'C:\\Users\\ADMINI~1\\AppData\\Local\\Temp\\61fb0e75e4f29248_backup.exe' with arguments '' and pid 1448
2025-07-11 18:09:07,765 [analyzer] DEBUG: Loaded monitor into process with pid 1448
2025-07-11 18:09:07,858 [analyzer] INFO: Added new file to list with pid 1448 and path C:\Users\Administrator\AppData\Local\Temp\backup.exe
2025-07-11 18:09:07,890 [analyzer] INFO: Added new file to list with pid 1448 and path C:\Users\Administrator\AppData\Local\Temp\0C7910BA-F902-421E-9E69-CF9AEE0DD4D7\backup.exe
2025-07-11 18:09:08,015 [analyzer] INFO: Injected into process with pid 2516 and name ''
2025-07-11 18:09:08,203 [analyzer] DEBUG: Loaded monitor into process with pid 2516
2025-07-11 18:09:08,328 [analyzer] INFO: Added new file to list with pid 1448 and path C:\Users\Administrator\AppData\Local\Temp\9C7EA51D-B2B9-4ABB-A82F-1B32707A146E\backup.exe
2025-07-11 18:09:08,467 [analyzer] INFO: Added new file to list with pid 1448 and path C:\Users\Administrator\AppData\Local\Temp\hsperfdata_Administrator\backup.exe
2025-07-11 18:09:09,280 [analyzer] INFO: Added new file to list with pid 2516 and path C:\backup.exe
2025-07-11 18:12:26,592 [analyzer] INFO: Analysis timeout hit, terminating analysis.
2025-07-11 18:12:27,608 [analyzer] INFO: Terminating remaining processes before shutdown.
2025-07-11 18:12:27,625 [lib.api.process] INFO: Successfully terminated process with pid 1448.
2025-07-11 18:12:27,625 [lib.api.process] INFO: Successfully terminated process with pid 2516.
2025-07-11 18:12:27,655 [analyzer] INFO: Analysis completed.

Cuckoo Log

2025-07-16 18:15:08,471 [cuckoo.core.scheduler] INFO: Task #6720731: acquired machine win7x6429 (label=win7x6429)
2025-07-16 18:15:08,476 [cuckoo.core.resultserver] DEBUG: Now tracking machine 192.168.168.229 for task #6720731
2025-07-16 18:15:09,050 [cuckoo.auxiliary.sniffer] INFO: Started sniffer with PID 2675025 (interface=vboxnet0, host=192.168.168.229)
2025-07-16 18:15:09,122 [cuckoo.machinery.virtualbox] DEBUG: Starting vm win7x6429
2025-07-16 18:15:10,435 [cuckoo.machinery.virtualbox] DEBUG: Restoring virtual machine win7x6429 to vmcloak
2025-07-16 18:15:27,921 [cuckoo.core.guest] INFO: Starting analysis #6720731 on guest (id=win7x6429, ip=192.168.168.229)
2025-07-16 18:15:29,025 [cuckoo.core.guest] DEBUG: win7x6429: not ready yet
2025-07-16 18:15:34,062 [cuckoo.core.guest] INFO: Guest is running Cuckoo Agent 0.10 (id=win7x6429, ip=192.168.168.229)
2025-07-16 18:15:34,180 [cuckoo.core.guest] DEBUG: Uploading analyzer to guest (id=win7x6429, ip=192.168.168.229, monitor=latest, size=6660546)
2025-07-16 18:15:35,805 [cuckoo.core.resultserver] DEBUG: Task #6720731: live log analysis.log initialized.
2025-07-16 18:15:37,038 [cuckoo.core.resultserver] DEBUG: Task #6720731 is sending a BSON stream
2025-07-16 18:15:37,521 [cuckoo.core.resultserver] DEBUG: Task #6720731 is sending a BSON stream
2025-07-16 18:15:37,943 [cuckoo.core.resultserver] DEBUG: Task #6720731 is sending a BSON stream
2025-07-16 18:15:38,311 [cuckoo.core.resultserver] DEBUG: Task #6720731: File upload for 'shots/0001.jpg'
2025-07-16 18:15:38,334 [cuckoo.core.resultserver] DEBUG: Task #6720731 uploaded file length: 133373
2025-07-16 18:15:50,310 [cuckoo.core.guest] DEBUG: win7x6429: analysis #6720731 still processing
2025-07-16 18:16:05,776 [cuckoo.core.guest] DEBUG: win7x6429: analysis #6720731 still processing
2025-07-16 18:16:21,033 [cuckoo.core.guest] DEBUG: win7x6429: analysis #6720731 still processing
2025-07-16 18:16:36,298 [cuckoo.core.guest] DEBUG: win7x6429: analysis #6720731 still processing
2025-07-16 18:16:51,463 [cuckoo.core.guest] DEBUG: win7x6429: analysis #6720731 still processing
2025-07-16 18:17:06,601 [cuckoo.core.guest] DEBUG: win7x6429: analysis #6720731 still processing
2025-07-16 18:17:21,750 [cuckoo.core.guest] DEBUG: win7x6429: analysis #6720731 still processing
2025-07-16 18:17:37,047 [cuckoo.core.guest] DEBUG: win7x6429: analysis #6720731 still processing
2025-07-16 18:17:52,307 [cuckoo.core.guest] DEBUG: win7x6429: analysis #6720731 still processing
2025-07-16 18:18:07,459 [cuckoo.core.guest] DEBUG: win7x6429: analysis #6720731 still processing
2025-07-16 18:18:22,611 [cuckoo.core.guest] DEBUG: win7x6429: analysis #6720731 still processing
2025-07-16 18:18:38,126 [cuckoo.core.guest] DEBUG: win7x6429: analysis #6720731 still processing
2025-07-16 18:18:53,581 [cuckoo.core.guest] DEBUG: win7x6429: analysis #6720731 still processing
2025-07-16 18:18:56,716 [cuckoo.core.resultserver] DEBUG: Task #6720731: File upload for 'curtain/1752250346.88.curtain.log'
2025-07-16 18:18:56,719 [cuckoo.core.resultserver] DEBUG: Task #6720731 uploaded file length: 36
2025-07-16 18:18:57,343 [cuckoo.core.resultserver] DEBUG: Task #6720731: File upload for 'sysmon/1752250347.5.sysmon.xml'
2025-07-16 18:18:57,458 [cuckoo.core.resultserver] DEBUG: Task #6720731 uploaded file length: 6142974
2025-07-16 18:18:57,482 [cuckoo.core.resultserver] DEBUG: Task #6720731: File upload for 'files/f9b801fcb9404bb8_backup.exe'
2025-07-16 18:18:57,485 [cuckoo.core.resultserver] DEBUG: Task #6720731: File upload for 'files/c9faef1fdbc3e29f_backup.exe'
2025-07-16 18:18:57,488 [cuckoo.core.resultserver] DEBUG: Task #6720731: File upload for 'files/2290de3c89d75c80_backup.exe'
2025-07-16 18:18:57,491 [cuckoo.core.resultserver] DEBUG: Task #6720731 uploaded file length: 91642
2025-07-16 18:18:57,493 [cuckoo.core.resultserver] DEBUG: Task #6720731 uploaded file length: 91640
2025-07-16 18:18:57,496 [cuckoo.core.resultserver] DEBUG: Task #6720731 uploaded file length: 91640
2025-07-16 18:18:57,517 [cuckoo.core.resultserver] DEBUG: Task #6720731 had connection reset for <Context for LOG>
2025-07-16 18:18:59,640 [cuckoo.core.guest] INFO: win7x6429: analysis completed successfully
2025-07-16 18:18:59,663 [cuckoo.core.plugins] DEBUG: Stopped auxiliary module: Redsocks
2025-07-16 18:18:59,696 [cuckoo.core.plugins] DEBUG: Stopped auxiliary module: Sniffer
2025-07-16 18:19:01,497 [cuckoo.machinery.virtualbox] INFO: Successfully generated memory dump for virtual machine with label win7x6429 to path /srv/cuckoo/cwd/storage/analyses/6720731/memory.dmp
2025-07-16 18:19:01,514 [cuckoo.machinery.virtualbox] DEBUG: Stopping vm win7x6429
2025-07-16 18:19:10,582 [cuckoo.core.resultserver] DEBUG: Stopped tracking machine 192.168.168.229 for task #6720731
2025-07-16 18:19:10,978 [cuckoo.core.scheduler] DEBUG: Released database task #6720731
2025-07-16 18:19:10,997 [cuckoo.core.scheduler] INFO: Task #6720731: analysis procedure completed

Signatures

Yara rule detected for file (1 event)
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:\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: 1448
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 1
length: 24576
protection: 32 (PAGE_EXECUTE_READ)
base_address: 0x003a0000
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'.pdata', u'virtual_size': u'0x00004000'} entropy 7.80467716 description A section with a high entropy has been found
entropy 0.260504201681 description Overall entropy of this PE file is high
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

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