Summary

e358961abc559d88_backup.exe

File e358961abc559d88_backup.exe

Summary
Download Resubmit sample

Size 88.3KB
Type PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed
MD5 17bee252cfb41ff4ec7b33e826bacc3c
SHA1 d6f6b8fc8f8d1b55ee931dded18d3a8ea376e47a
SHA256 e358961abc559d885124b9277f41c61470acd0f3fe080c9258e7467296977ee4
SHA512
d624507c945bbc6de5b01df9fa47fb9bfbcc43b1a8949d50871cc8214be2f98b856cfd9e6124f864e0dab4d38475404edf052ca878f48923b7ab93b5f2103d5d
CRC32 4847E2E7
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

Parent_Task_ID:6700427

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Information on Execution

Analysis
Category Started Completed Duration Routing Logs
FILE July 17, 2025, 4:20 p.m. July 17, 2025, 4:29 p.m. 530 seconds internet Show Analyzer Log
Show Cuckoo Log

Analyzer Log

2025-07-13 19:42:15,000 [analyzer] DEBUG: Starting analyzer from: C:\tmpwoh6zt
2025-07-13 19:42:15,015 [analyzer] DEBUG: Pipe server name: \??\PIPE\gCHfZjHilyUgqFZvAjhsDKJmWOPvOxT
2025-07-13 19:42:15,015 [analyzer] DEBUG: Log pipe server name: \??\PIPE\bErFevxgGKtQigzBBxOjpIeHR
2025-07-13 19:42:15,015 [analyzer] DEBUG: No analysis package specified, trying to detect it automagically.
2025-07-13 19:42:15,015 [analyzer] INFO: Automatically selected analysis package "exe"
2025-07-13 19:42:15,328 [analyzer] DEBUG: Started auxiliary module Curtain
2025-07-13 19:42:15,328 [analyzer] DEBUG: Started auxiliary module DbgView
2025-07-13 19:42:15,890 [analyzer] DEBUG: Started auxiliary module Disguise
2025-07-13 19:42:16,092 [analyzer] DEBUG: Loaded monitor into process with pid 500
2025-07-13 19:42:16,092 [analyzer] DEBUG: Started auxiliary module DumpTLSMasterSecrets
2025-07-13 19:42:16,092 [analyzer] DEBUG: Started auxiliary module Human
2025-07-13 19:42:16,092 [analyzer] DEBUG: Started auxiliary module InstallCertificate
2025-07-13 19:42:16,092 [analyzer] DEBUG: Started auxiliary module Reboot
2025-07-13 19:42:16,155 [analyzer] DEBUG: Started auxiliary module RecentFiles
2025-07-13 19:42:16,155 [analyzer] DEBUG: Started auxiliary module Screenshots
2025-07-13 19:42:16,155 [analyzer] DEBUG: Started auxiliary module Sysmon
2025-07-13 19:42:16,155 [analyzer] DEBUG: Started auxiliary module LoadZer0m0n
2025-07-13 19:42:16,296 [lib.api.process] INFO: Successfully executed process from path u'C:\\Users\\ADMINI~1\\AppData\\Local\\Temp\\e358961abc559d88_backup.exe' with arguments '' and pid 1540
2025-07-13 19:42:16,500 [analyzer] DEBUG: Loaded monitor into process with pid 1540
2025-07-13 19:42:16,562 [analyzer] INFO: Added new file to list with pid 1540 and path C:\Users\Administrator\AppData\Local\Temp\backup.exe
2025-07-13 19:42:16,578 [analyzer] INFO: Added new file to list with pid 1540 and path C:\Users\Administrator\AppData\Local\Temp\0C7910BA-F902-421E-9E69-CF9AEE0DD4D7\backup.exe
2025-07-13 19:42:16,655 [analyzer] INFO: Injected into process with pid 2768 and name ''
2025-07-13 19:42:16,828 [analyzer] DEBUG: Loaded monitor into process with pid 2768
2025-07-13 19:42:16,890 [analyzer] INFO: Added new file to list with pid 1540 and path C:\Users\Administrator\AppData\Local\Temp\9C7EA51D-B2B9-4ABB-A82F-1B32707A146E\backup.exe
2025-07-13 19:42:16,967 [analyzer] INFO: Added new file to list with pid 1540 and path C:\Users\Administrator\AppData\Local\Temp\hsperfdata_Administrator\backup.exe
2025-07-13 19:42:17,890 [analyzer] INFO: Added new file to list with pid 2768 and path C:\backup.exe
2025-07-13 19:45:35,296 [analyzer] INFO: Analysis timeout hit, terminating analysis.
2025-07-13 19:45:37,358 [analyzer] INFO: Terminating remaining processes before shutdown.
2025-07-13 19:45:37,358 [lib.api.process] INFO: Successfully terminated process with pid 1540.
2025-07-13 19:45:37,358 [lib.api.process] INFO: Successfully terminated process with pid 2768.
2025-07-13 19:45:37,375 [analyzer] INFO: Analysis completed.

Cuckoo Log

2025-07-17 16:20:40,148 [cuckoo.core.scheduler] INFO: Task #6727561: acquired machine win7x643 (label=win7x643)
2025-07-17 16:20:40,149 [cuckoo.core.resultserver] DEBUG: Now tracking machine 192.168.168.203 for task #6727561
2025-07-17 16:20:40,866 [cuckoo.auxiliary.sniffer] INFO: Started sniffer with PID 591903 (interface=vboxnet0, host=192.168.168.203)
2025-07-17 16:20:41,367 [cuckoo.machinery.virtualbox] DEBUG: Starting vm win7x643
2025-07-17 16:20:42,606 [cuckoo.machinery.virtualbox] DEBUG: Restoring virtual machine win7x643 to vmcloak
2025-07-17 16:23:39,467 [cuckoo.core.guest] INFO: Starting analysis #6727561 on guest (id=win7x643, ip=192.168.168.203)
2025-07-17 16:23:40,474 [cuckoo.core.guest] DEBUG: win7x643: not ready yet
2025-07-17 16:23:45,495 [cuckoo.core.guest] INFO: Guest is running Cuckoo Agent 0.10 (id=win7x643, ip=192.168.168.203)
2025-07-17 16:23:45,577 [cuckoo.core.guest] DEBUG: Uploading analyzer to guest (id=win7x643, ip=192.168.168.203, monitor=latest, size=6660546)
2025-07-17 16:23:46,839 [cuckoo.core.resultserver] DEBUG: Task #6727561: live log analysis.log initialized.
2025-07-17 16:23:47,880 [cuckoo.core.resultserver] DEBUG: Task #6727561 is sending a BSON stream
2025-07-17 16:23:48,284 [cuckoo.core.resultserver] DEBUG: Task #6727561 is sending a BSON stream
2025-07-17 16:23:48,598 [cuckoo.core.resultserver] DEBUG: Task #6727561 is sending a BSON stream
2025-07-17 16:23:49,118 [cuckoo.core.resultserver] DEBUG: Task #6727561: File upload for 'shots/0001.jpg'
2025-07-17 16:23:49,128 [cuckoo.core.resultserver] DEBUG: Task #6727561 uploaded file length: 133463
2025-07-17 16:24:01,469 [cuckoo.core.guest] DEBUG: win7x643: analysis #6727561 still processing
2025-07-17 16:24:16,729 [cuckoo.core.guest] DEBUG: win7x643: analysis #6727561 still processing
2025-07-17 16:24:32,175 [cuckoo.core.guest] DEBUG: win7x643: analysis #6727561 still processing
2025-07-17 16:24:47,452 [cuckoo.core.guest] DEBUG: win7x643: analysis #6727561 still processing
2025-07-17 16:25:02,735 [cuckoo.core.guest] DEBUG: win7x643: analysis #6727561 still processing
2025-07-17 16:25:17,869 [cuckoo.core.guest] DEBUG: win7x643: analysis #6727561 still processing
2025-07-17 16:25:33,144 [cuckoo.core.guest] DEBUG: win7x643: analysis #6727561 still processing
2025-07-17 16:25:48,301 [cuckoo.core.guest] DEBUG: win7x643: analysis #6727561 still processing
2025-07-17 16:26:03,462 [cuckoo.core.guest] DEBUG: win7x643: analysis #6727561 still processing
2025-07-17 16:26:18,717 [cuckoo.core.guest] DEBUG: win7x643: analysis #6727561 still processing
2025-07-17 16:26:34,313 [cuckoo.core.guest] DEBUG: win7x643: analysis #6727561 still processing
2025-07-17 16:26:50,104 [cuckoo.core.guest] DEBUG: win7x643: analysis #6727561 still processing
2025-07-17 16:27:05,344 [cuckoo.core.guest] DEBUG: win7x643: analysis #6727561 still processing
2025-07-17 16:27:07,373 [cuckoo.core.resultserver] DEBUG: Task #6727561: File upload for 'curtain/1752428735.52.curtain.log'
2025-07-17 16:27:07,376 [cuckoo.core.resultserver] DEBUG: Task #6727561 uploaded file length: 36
2025-07-17 16:27:08,542 [cuckoo.core.resultserver] DEBUG: Task #6727561: File upload for 'sysmon/1752428736.28.sysmon.xml'
2025-07-17 16:27:09,216 [cuckoo.core.resultserver] DEBUG: Task #6727561 uploaded file length: 9697474
2025-07-17 16:27:09,266 [cuckoo.core.resultserver] DEBUG: Task #6727561 had connection reset for <Context for LOG>
2025-07-17 16:27:09,267 [cuckoo.core.resultserver] DEBUG: Task #6727561: File upload for 'files/b42fd392ac226ddb_backup.exe'
2025-07-17 16:27:09,270 [cuckoo.core.resultserver] DEBUG: Task #6727561: File upload for 'files/f72fbd607fbfb6b2_backup.exe'
2025-07-17 16:27:09,272 [cuckoo.core.resultserver] DEBUG: Task #6727561 uploaded file length: 90372
2025-07-17 16:27:09,274 [cuckoo.core.resultserver] DEBUG: Task #6727561 uploaded file length: 90374
2025-07-17 16:27:11,862 [cuckoo.core.guest] INFO: win7x643: analysis completed successfully
2025-07-17 16:27:11,875 [cuckoo.core.plugins] DEBUG: Stopped auxiliary module: Redsocks
2025-07-17 16:27:11,911 [cuckoo.core.plugins] DEBUG: Stopped auxiliary module: Sniffer
2025-07-17 16:27:13,427 [cuckoo.machinery.virtualbox] INFO: Successfully generated memory dump for virtual machine with label win7x643 to path /srv/cuckoo/cwd/storage/analyses/6727561/memory.dmp
2025-07-17 16:27:13,429 [cuckoo.machinery.virtualbox] DEBUG: Stopping vm win7x643
2025-07-17 16:29:29,349 [cuckoo.core.resultserver] DEBUG: Stopped tracking machine 192.168.168.203 for task #6727561
2025-07-17 16:29:30,031 [cuckoo.core.scheduler] DEBUG: Released database task #6727561
2025-07-17 16:29:30,049 [cuckoo.core.scheduler] INFO: Task #6727561: 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: 1540
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 1
length: 24576
protection: 32 (PAGE_EXECUTE_READ)
base_address: 0x01bf0000
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 13 AntiVirus engine on IRMA as malicious (13 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
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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