Summary

f5a23941a6d518bd4eb9d3ad7879dfdae34a38017742e55242c3cb8664e1c4d3

File f5a23941a6d518bd4eb9d3ad7879dfdae34a38017742e55242c3cb8664e1c4d3

Summary
Download Resubmit sample

Size 88.2KB
Type PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed
MD5 0db9ddc1897bffe0d17691d77436b903
SHA1 65f7421b7bcc5767eb4c8d3783947288574942ac
SHA256 f5a23941a6d518bd4eb9d3ad7879dfdae34a38017742e55242c3cb8664e1c4d3
SHA512
7e59915ad85756ab225ce7dd321203bd71ef5be071f7c387a46ee2081b588ccf6ab2c9e0f9da988c1275fa56c89288d78f6bfe3f1038e10d1c4053cb627a8287
CRC32 42C63E49
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

6721818

6721819

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Information on Execution

Analysis
Category Started Completed Duration Routing Logs
FILE July 12, 2025, 1:52 a.m. July 12, 2025, 2 a.m. 452 seconds internet Show Analyzer Log
Show Cuckoo Log

Analyzer Log

2025-07-08 16:16:38,000 [analyzer] DEBUG: Starting analyzer from: C:\tmpht3fil
2025-07-08 16:16:38,000 [analyzer] DEBUG: Pipe server name: \??\PIPE\aTDCkqgbBopCFLfADtuy
2025-07-08 16:16:38,000 [analyzer] DEBUG: Log pipe server name: \??\PIPE\XdsYUSXcDqRUGftbodUKfsxNajq
2025-07-08 16:16:38,280 [analyzer] DEBUG: Started auxiliary module Curtain
2025-07-08 16:16:38,280 [analyzer] DEBUG: Started auxiliary module DbgView
2025-07-08 16:16:38,780 [analyzer] DEBUG: Started auxiliary module Disguise
2025-07-08 16:16:38,983 [analyzer] DEBUG: Loaded monitor into process with pid 504
2025-07-08 16:16:38,983 [analyzer] DEBUG: Started auxiliary module DumpTLSMasterSecrets
2025-07-08 16:16:38,983 [analyzer] DEBUG: Started auxiliary module Human
2025-07-08 16:16:38,983 [analyzer] DEBUG: Started auxiliary module InstallCertificate
2025-07-08 16:16:38,983 [analyzer] DEBUG: Started auxiliary module Reboot
2025-07-08 16:16:39,030 [analyzer] DEBUG: Started auxiliary module RecentFiles
2025-07-08 16:16:39,046 [analyzer] DEBUG: Started auxiliary module Screenshots
2025-07-08 16:16:39,046 [analyzer] DEBUG: Started auxiliary module Sysmon
2025-07-08 16:16:39,046 [analyzer] DEBUG: Started auxiliary module LoadZer0m0n
2025-07-08 16:16:39,171 [lib.api.process] INFO: Successfully executed process from path u'C:\\Users\\ADMINI~1\\AppData\\Local\\Temp\\f5a23941a6d518bd4eb9d3ad7879dfdae34a38017742e55242c3cb8664e1c4d3.exe' with arguments '' and pid 2916
2025-07-08 16:16:39,375 [analyzer] DEBUG: Loaded monitor into process with pid 2916
2025-07-08 16:16:39,437 [analyzer] INFO: Added new file to list with pid 2916 and path C:\Users\Administrator\AppData\Local\Temp\backup.exe
2025-07-08 16:16:39,453 [analyzer] INFO: Added new file to list with pid 2916 and path C:\Users\Administrator\AppData\Local\Temp\0C7910BA-F902-421E-9E69-CF9AEE0DD4D7\backup.exe
2025-07-08 16:16:39,530 [analyzer] INFO: Injected into process with pid 464 and name ''
2025-07-08 16:16:39,703 [analyzer] DEBUG: Loaded monitor into process with pid 464
2025-07-08 16:16:39,796 [analyzer] INFO: Added new file to list with pid 2916 and path C:\Users\Administrator\AppData\Local\Temp\9C7EA51D-B2B9-4ABB-A82F-1B32707A146E\backup.exe
2025-07-08 16:16:39,890 [analyzer] INFO: Added new file to list with pid 2916 and path C:\Users\Administrator\AppData\Local\Temp\hsperfdata_Administrator\backup.exe
2025-07-08 16:16:40,765 [analyzer] INFO: Added new file to list with pid 464 and path C:\backup.exe
2025-07-08 16:17:08,187 [analyzer] INFO: Analysis timeout hit, terminating analysis.
2025-07-08 16:17:08,687 [analyzer] INFO: Terminating remaining processes before shutdown.
2025-07-08 16:17:08,687 [lib.api.process] INFO: Successfully terminated process with pid 2916.
2025-07-08 16:17:08,687 [lib.api.process] INFO: Successfully terminated process with pid 464.
2025-07-08 16:17:08,717 [analyzer] INFO: Analysis completed.

Cuckoo Log

2025-07-12 01:52:45,015 [cuckoo.core.scheduler] DEBUG: Task #6689214: no machine available yet
2025-07-12 01:52:46,100 [cuckoo.core.scheduler] DEBUG: Task #6689214: no machine available yet
2025-07-12 01:52:47,131 [cuckoo.core.scheduler] DEBUG: Task #6689214: no machine available yet
2025-07-12 01:52:48,164 [cuckoo.core.scheduler] DEBUG: Task #6689214: no machine available yet
2025-07-12 01:52:49,195 [cuckoo.core.scheduler] DEBUG: Task #6689214: no machine available yet
2025-07-12 01:52:50,237 [cuckoo.core.scheduler] DEBUG: Task #6689214: no machine available yet
2025-07-12 01:52:51,274 [cuckoo.core.scheduler] DEBUG: Task #6689214: no machine available yet
2025-07-12 01:52:52,378 [cuckoo.core.scheduler] DEBUG: Task #6689214: no machine available yet
2025-07-12 01:52:53,426 [cuckoo.core.scheduler] DEBUG: Task #6689214: no machine available yet
2025-07-12 01:52:54,486 [cuckoo.core.scheduler] DEBUG: Task #6689214: no machine available yet
2025-07-12 01:52:55,538 [cuckoo.core.scheduler] DEBUG: Task #6689214: no machine available yet
2025-07-12 01:52:56,575 [cuckoo.core.scheduler] DEBUG: Task #6689214: no machine available yet
2025-07-12 01:52:57,996 [cuckoo.core.scheduler] DEBUG: Task #6689214: no machine available yet
2025-07-12 01:52:59,032 [cuckoo.core.scheduler] DEBUG: Task #6689214: no machine available yet
2025-07-12 01:53:00,059 [cuckoo.core.scheduler] DEBUG: Task #6689214: no machine available yet
2025-07-12 01:53:01,085 [cuckoo.core.scheduler] DEBUG: Task #6689214: no machine available yet
2025-07-12 01:53:02,128 [cuckoo.core.scheduler] DEBUG: Task #6689214: no machine available yet
2025-07-12 01:53:03,181 [cuckoo.core.scheduler] DEBUG: Task #6689214: no machine available yet
2025-07-12 01:53:04,226 [cuckoo.core.scheduler] DEBUG: Task #6689214: no machine available yet
2025-07-12 01:53:05,711 [cuckoo.core.scheduler] DEBUG: Task #6689214: no machine available yet
2025-07-12 01:53:06,790 [cuckoo.core.scheduler] DEBUG: Task #6689214: no machine available yet
2025-07-12 01:53:07,834 [cuckoo.core.scheduler] DEBUG: Task #6689214: no machine available yet
2025-07-12 01:53:08,904 [cuckoo.core.scheduler] DEBUG: Task #6689214: no machine available yet
2025-07-12 01:53:09,950 [cuckoo.core.scheduler] DEBUG: Task #6689214: no machine available yet
2025-07-12 01:53:10,982 [cuckoo.core.scheduler] DEBUG: Task #6689214: no machine available yet
2025-07-12 01:53:12,021 [cuckoo.core.scheduler] DEBUG: Task #6689214: no machine available yet
2025-07-12 01:53:13,065 [cuckoo.core.scheduler] DEBUG: Task #6689214: no machine available yet
2025-07-12 01:53:14,197 [cuckoo.core.scheduler] DEBUG: Task #6689214: no machine available yet
2025-07-12 01:53:15,236 [cuckoo.core.scheduler] DEBUG: Task #6689214: no machine available yet
2025-07-12 01:53:16,281 [cuckoo.core.scheduler] DEBUG: Task #6689214: no machine available yet
2025-07-12 01:53:17,794 [cuckoo.core.scheduler] DEBUG: Task #6689214: no machine available yet
2025-07-12 01:53:18,925 [cuckoo.core.scheduler] DEBUG: Task #6689214: no machine available yet
2025-07-12 01:53:20,020 [cuckoo.core.scheduler] DEBUG: Task #6689214: no machine available yet
2025-07-12 01:53:21,158 [cuckoo.core.scheduler] DEBUG: Task #6689214: no machine available yet
2025-07-12 01:53:22,284 [cuckoo.core.scheduler] DEBUG: Task #6689214: no machine available yet
2025-07-12 01:53:23,384 [cuckoo.core.scheduler] DEBUG: Task #6689214: no machine available yet
2025-07-12 01:53:24,724 [cuckoo.core.scheduler] DEBUG: Task #6689214: no machine available yet
2025-07-12 01:53:26,125 [cuckoo.core.scheduler] DEBUG: Task #6689214: no machine available yet
2025-07-12 01:53:27,268 [cuckoo.core.scheduler] INFO: Task #6689214: acquired machine win7x6411 (label=win7x6411)
2025-07-12 01:53:27,271 [cuckoo.core.resultserver] DEBUG: Now tracking machine 192.168.168.211 for task #6689214
2025-07-12 01:53:27,870 [cuckoo.auxiliary.sniffer] INFO: Started sniffer with PID 247956 (interface=vboxnet0, host=192.168.168.211)
2025-07-12 01:53:28,444 [cuckoo.machinery.virtualbox] DEBUG: Starting vm win7x6411
2025-07-12 01:53:29,599 [cuckoo.machinery.virtualbox] DEBUG: Restoring virtual machine win7x6411 to vmcloak
2025-07-12 01:56:25,327 [cuckoo.core.guest] INFO: Starting analysis #6689214 on guest (id=win7x6411, ip=192.168.168.211)
2025-07-12 01:56:26,333 [cuckoo.core.guest] DEBUG: win7x6411: not ready yet
2025-07-12 01:56:31,364 [cuckoo.core.guest] INFO: Guest is running Cuckoo Agent 0.10 (id=win7x6411, ip=192.168.168.211)
2025-07-12 01:56:31,514 [cuckoo.core.guest] DEBUG: Uploading analyzer to guest (id=win7x6411, ip=192.168.168.211, monitor=latest, size=6660546)
2025-07-12 01:56:32,782 [cuckoo.core.resultserver] DEBUG: Task #6689214: live log analysis.log initialized.
2025-07-12 01:56:33,716 [cuckoo.core.resultserver] DEBUG: Task #6689214 is sending a BSON stream
2025-07-12 01:56:34,093 [cuckoo.core.resultserver] DEBUG: Task #6689214 is sending a BSON stream
2025-07-12 01:56:34,422 [cuckoo.core.resultserver] DEBUG: Task #6689214 is sending a BSON stream
2025-07-12 01:56:34,984 [cuckoo.core.resultserver] DEBUG: Task #6689214: File upload for 'shots/0001.jpg'
2025-07-12 01:56:34,999 [cuckoo.core.resultserver] DEBUG: Task #6689214 uploaded file length: 133443
2025-07-12 01:56:47,708 [cuckoo.core.guest] DEBUG: win7x6411: analysis #6689214 still processing
2025-07-12 01:57:03,113 [cuckoo.core.guest] DEBUG: win7x6411: analysis #6689214 still processing
2025-07-12 01:57:03,218 [cuckoo.core.resultserver] DEBUG: Task #6689214: File upload for 'curtain/1751984228.41.curtain.log'
2025-07-12 01:57:03,221 [cuckoo.core.resultserver] DEBUG: Task #6689214 uploaded file length: 36
2025-07-12 01:57:03,454 [cuckoo.core.resultserver] DEBUG: Task #6689214: File upload for 'sysmon/1751984228.66.sysmon.xml'
2025-07-12 01:57:03,486 [cuckoo.core.resultserver] DEBUG: Task #6689214 uploaded file length: 1577390
2025-07-12 01:57:03,497 [cuckoo.core.resultserver] DEBUG: Task #6689214: File upload for 'files/276442cb17aaad19_backup.exe'
2025-07-12 01:57:03,501 [cuckoo.core.resultserver] DEBUG: Task #6689214 uploaded file length: 90292
2025-07-12 01:57:03,503 [cuckoo.core.resultserver] DEBUG: Task #6689214: File upload for 'files/0326e3c00f12cf18_backup.exe'
2025-07-12 01:57:03,505 [cuckoo.core.resultserver] DEBUG: Task #6689214 uploaded file length: 90294
2025-07-12 01:57:03,965 [cuckoo.core.resultserver] DEBUG: Task #6689214 had connection reset for <Context for LOG>
2025-07-12 01:57:06,128 [cuckoo.core.guest] INFO: win7x6411: analysis completed successfully
2025-07-12 01:57:06,146 [cuckoo.core.plugins] DEBUG: Stopped auxiliary module: Redsocks
2025-07-12 01:57:06,179 [cuckoo.core.plugins] DEBUG: Stopped auxiliary module: Sniffer
2025-07-12 01:57:07,644 [cuckoo.machinery.virtualbox] INFO: Successfully generated memory dump for virtual machine with label win7x6411 to path /srv/cuckoo/cwd/storage/analyses/6689214/memory.dmp
2025-07-12 01:57:07,648 [cuckoo.machinery.virtualbox] DEBUG: Stopping vm win7x6411
2025-07-12 02:00:16,527 [cuckoo.core.resultserver] DEBUG: Stopped tracking machine 192.168.168.211 for task #6689214
2025-07-12 02:00:17,097 [cuckoo.core.scheduler] DEBUG: Released database task #6689214
2025-07-12 02:00:17,140 [cuckoo.core.scheduler] INFO: Task #6689214: 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
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: 2916
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 1
length: 24576
protection: 32 (PAGE_EXECUTE_READ)
base_address: 0x00330000
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

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