Summary

ac33ea9ad9388571_backup.exe

File ac33ea9ad9388571_backup.exe

Summary
Download Resubmit sample

Size 172.5KB
Type PE32 executable (GUI) Intel 80386 (stripped to external PDB), for MS Windows, UPX compressed
MD5 f5245b23cf537f4be7bf9d823098e429
SHA1 3b40cea5734a1be4f5cc18d218fe1b05f0a22144
SHA256 ac33ea9ad9388571111b1202c0dad9cb1e11a1dfa68f4dace2ad03ef08cb2111
SHA512
94c153b669742bb91ee49e3339dbfe1db524a39aba70ff657c0010bb0efeae6eb59ec8e83f6adbce1eeeb17a7b0a01d773e3631729056ebd56043dc58fb13578
CRC32 5677F046
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:6702919

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Information on Execution

Analysis
Category Started Completed Duration Routing Logs
FILE July 18, 2025, 4:28 a.m. July 18, 2025, 4:36 a.m. 495 seconds internet Show Analyzer Log
Show Cuckoo Log

Analyzer Log

2025-07-14 05:05:32,015 [analyzer] DEBUG: Starting analyzer from: C:\tmphzbxu3
2025-07-14 05:05:32,015 [analyzer] DEBUG: Pipe server name: \??\PIPE\rHSHHBBfpNgkayPMAblQfYWq
2025-07-14 05:05:32,015 [analyzer] DEBUG: Log pipe server name: \??\PIPE\xMdivsKWAUsckTbVUZWYvJifYfXE
2025-07-14 05:05:32,015 [analyzer] DEBUG: No analysis package specified, trying to detect it automagically.
2025-07-14 05:05:32,015 [analyzer] INFO: Automatically selected analysis package "exe"
2025-07-14 05:05:32,280 [analyzer] DEBUG: Started auxiliary module Curtain
2025-07-14 05:05:32,280 [analyzer] DEBUG: Started auxiliary module DbgView
2025-07-14 05:05:32,703 [analyzer] DEBUG: Started auxiliary module Disguise
2025-07-14 05:05:32,890 [analyzer] DEBUG: Loaded monitor into process with pid 500
2025-07-14 05:05:32,890 [analyzer] DEBUG: Started auxiliary module DumpTLSMasterSecrets
2025-07-14 05:05:32,890 [analyzer] DEBUG: Started auxiliary module Human
2025-07-14 05:05:32,890 [analyzer] DEBUG: Started auxiliary module InstallCertificate
2025-07-14 05:05:32,890 [analyzer] DEBUG: Started auxiliary module Reboot
2025-07-14 05:05:32,953 [analyzer] DEBUG: Started auxiliary module RecentFiles
2025-07-14 05:05:32,953 [analyzer] DEBUG: Started auxiliary module Screenshots
2025-07-14 05:05:32,953 [analyzer] DEBUG: Started auxiliary module Sysmon
2025-07-14 05:05:32,953 [analyzer] DEBUG: Started auxiliary module LoadZer0m0n
2025-07-14 05:05:33,092 [lib.api.process] INFO: Successfully executed process from path u'C:\\Users\\ADMINI~1\\AppData\\Local\\Temp\\ac33ea9ad9388571_backup.exe' with arguments '' and pid 1792
2025-07-14 05:05:33,296 [analyzer] DEBUG: Loaded monitor into process with pid 1792
2025-07-14 05:05:33,342 [analyzer] INFO: Added new file to list with pid 1792 and path C:\Users\Administrator\AppData\Local\Temp\backup.exe
2025-07-14 05:05:33,358 [analyzer] INFO: Added new file to list with pid 1792 and path C:\Users\Administrator\AppData\Local\Temp\0C7910BA-F902-421E-9E69-CF9AEE0DD4D7\backup.exe
2025-07-14 05:05:33,437 [analyzer] INFO: Injected into process with pid 896 and name ''
2025-07-14 05:05:33,592 [analyzer] DEBUG: Loaded monitor into process with pid 896
2025-07-14 05:05:33,687 [analyzer] INFO: Added new file to list with pid 1792 and path C:\Users\Administrator\AppData\Local\Temp\9C7EA51D-B2B9-4ABB-A82F-1B32707A146E\backup.exe
2025-07-14 05:05:33,780 [analyzer] INFO: Added new file to list with pid 1792 and path C:\Users\Administrator\AppData\Local\Temp\hsperfdata_Administrator\backup.exe
2025-07-14 05:05:34,655 [analyzer] INFO: Added new file to list with pid 896 and path C:\backup.exe
2025-07-14 05:08:52,092 [analyzer] INFO: Analysis timeout hit, terminating analysis.
2025-07-14 05:08:53,108 [analyzer] INFO: Terminating remaining processes before shutdown.
2025-07-14 05:08:53,108 [lib.api.process] INFO: Successfully terminated process with pid 1792.
2025-07-14 05:08:53,108 [lib.api.process] INFO: Successfully terminated process with pid 896.
2025-07-14 05:08:53,140 [analyzer] INFO: Analysis completed.

Cuckoo Log

2025-07-18 04:28:36,234 [cuckoo.core.scheduler] INFO: Task #6729868: acquired machine win7x6425 (label=win7x6425)
2025-07-18 04:28:36,235 [cuckoo.core.resultserver] DEBUG: Now tracking machine 192.168.168.225 for task #6729868
2025-07-18 04:28:36,499 [cuckoo.auxiliary.sniffer] INFO: Started sniffer with PID 1699197 (interface=vboxnet0, host=192.168.168.225)
2025-07-18 04:28:36,669 [cuckoo.machinery.virtualbox] DEBUG: Starting vm win7x6425
2025-07-18 04:28:37,562 [cuckoo.machinery.virtualbox] DEBUG: Restoring virtual machine win7x6425 to vmcloak
2025-07-18 04:31:02,617 [cuckoo.core.guest] INFO: Starting analysis #6729868 on guest (id=win7x6425, ip=192.168.168.225)
2025-07-18 04:31:03,625 [cuckoo.core.guest] DEBUG: win7x6425: not ready yet
2025-07-18 04:31:08,651 [cuckoo.core.guest] INFO: Guest is running Cuckoo Agent 0.10 (id=win7x6425, ip=192.168.168.225)
2025-07-18 04:31:08,731 [cuckoo.core.guest] DEBUG: Uploading analyzer to guest (id=win7x6425, ip=192.168.168.225, monitor=latest, size=6660546)
2025-07-18 04:31:10,088 [cuckoo.core.resultserver] DEBUG: Task #6729868: live log analysis.log initialized.
2025-07-18 04:31:10,845 [cuckoo.core.resultserver] DEBUG: Task #6729868 is sending a BSON stream
2025-07-18 04:31:11,241 [cuckoo.core.resultserver] DEBUG: Task #6729868 is sending a BSON stream
2025-07-18 04:31:11,532 [cuckoo.core.resultserver] DEBUG: Task #6729868 is sending a BSON stream
2025-07-18 04:31:12,067 [cuckoo.core.resultserver] DEBUG: Task #6729868: File upload for 'shots/0001.jpg'
2025-07-18 04:31:12,085 [cuckoo.core.resultserver] DEBUG: Task #6729868 uploaded file length: 133480
2025-07-18 04:31:24,694 [cuckoo.core.guest] DEBUG: win7x6425: analysis #6729868 still processing
2025-07-18 04:31:39,777 [cuckoo.core.guest] DEBUG: win7x6425: analysis #6729868 still processing
2025-07-18 04:31:54,875 [cuckoo.core.guest] DEBUG: win7x6425: analysis #6729868 still processing
2025-07-18 04:32:09,952 [cuckoo.core.guest] DEBUG: win7x6425: analysis #6729868 still processing
2025-07-18 04:32:25,045 [cuckoo.core.guest] DEBUG: win7x6425: analysis #6729868 still processing
2025-07-18 04:32:40,275 [cuckoo.core.guest] DEBUG: win7x6425: analysis #6729868 still processing
2025-07-18 04:32:55,372 [cuckoo.core.guest] DEBUG: win7x6425: analysis #6729868 still processing
2025-07-18 04:33:10,453 [cuckoo.core.guest] DEBUG: win7x6425: analysis #6729868 still processing
2025-07-18 04:33:25,541 [cuckoo.core.guest] DEBUG: win7x6425: analysis #6729868 still processing
2025-07-18 04:33:40,790 [cuckoo.core.guest] DEBUG: win7x6425: analysis #6729868 still processing
2025-07-18 04:33:55,906 [cuckoo.core.guest] DEBUG: win7x6425: analysis #6729868 still processing
2025-07-18 04:34:11,110 [cuckoo.core.guest] DEBUG: win7x6425: analysis #6729868 still processing
2025-07-18 04:34:26,261 [cuckoo.core.guest] DEBUG: win7x6425: analysis #6729868 still processing
2025-07-18 04:34:30,289 [cuckoo.core.resultserver] DEBUG: Task #6729868: File upload for 'curtain/1752462532.27.curtain.log'
2025-07-18 04:34:30,310 [cuckoo.core.resultserver] DEBUG: Task #6729868 uploaded file length: 36
2025-07-18 04:34:31,058 [cuckoo.core.resultserver] DEBUG: Task #6729868: File upload for 'sysmon/1752462533.03.sysmon.xml'
2025-07-18 04:34:31,137 [cuckoo.core.resultserver] DEBUG: Task #6729868 uploaded file length: 11603840
2025-07-18 04:34:31,158 [cuckoo.core.resultserver] DEBUG: Task #6729868: File upload for 'files/0b606791b6ee44a0_backup.exe'
2025-07-18 04:34:31,160 [cuckoo.core.resultserver] DEBUG: Task #6729868: File upload for 'files/cdeabf81628ff855_backup.exe'
2025-07-18 04:34:31,166 [cuckoo.core.resultserver] DEBUG: Task #6729868 uploaded file length: 176641
2025-07-18 04:34:31,168 [cuckoo.core.resultserver] DEBUG: Task #6729868 uploaded file length: 176643
2025-07-18 04:34:31,177 [cuckoo.core.resultserver] DEBUG: Task #6729868 had connection reset for <Context for LOG>
2025-07-18 04:34:32,316 [cuckoo.core.guest] INFO: win7x6425: analysis completed successfully
2025-07-18 04:34:32,332 [cuckoo.core.plugins] DEBUG: Stopped auxiliary module: Redsocks
2025-07-18 04:34:32,358 [cuckoo.core.plugins] DEBUG: Stopped auxiliary module: Sniffer
2025-07-18 04:34:33,323 [cuckoo.machinery.virtualbox] INFO: Successfully generated memory dump for virtual machine with label win7x6425 to path /srv/cuckoo/cwd/storage/analyses/6729868/memory.dmp
2025-07-18 04:34:33,325 [cuckoo.machinery.virtualbox] DEBUG: Stopping vm win7x6425
2025-07-18 04:36:50,912 [cuckoo.core.resultserver] DEBUG: Stopped tracking machine 192.168.168.225 for task #6729868
2025-07-18 04:36:51,464 [cuckoo.core.scheduler] DEBUG: Released database task #6729868
2025-07-18 04:36:51,479 [cuckoo.core.scheduler] INFO: Task #6729868: 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: 1792
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 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.76869163 (Engine A), Win32.Trojan.Vilsel.A (Engine B)
Avast Core Security (Linux) Win32:Vilsel-CT [Trj]
C4S ClamAV (Linux) Win.Malware.Genpack-6989317-0
Trellix (Linux) Generic VB.z trojan
WithSecure (Linux) Trojan.TR/Crypt.ULPM.Gen
eScan Antivirus (Linux) Trojan.GenericKD.76869163(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.76869163
Kaspersky Standard (Windows) Trojan.Win32.Vilsel.loy
Emsisoft Commandline Scanner (Windows) Trojan.GenericKD.76869163 (B)
Screenshots
Name Response Post-Analysis Lookup
No hosts contacted.
IP Address Status Action VT Location
No hosts contacted.
Cuckoo

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