Summary

b741e4a368b0db29_backup.exe

File b741e4a368b0db29_backup.exe

Summary
Download Resubmit sample

Size 122.8KB
Type PE32 executable (GUI) Intel 80386, for MS Windows
MD5 c69ca24d2dd51f335bffa2d34ccd8353
SHA1 729ceaf4e1b895c3fe461a227d7270aa07968072
SHA256 b741e4a368b0db291045b98b98484651a312643fc583707db9b25b8004d197c1
SHA512
e08f5841a16f10e16e8ecefca6b3725e726ec2b718141fc4f8e9dc52b93b0c0bace8bf54ba5e0df5309897d8274b9e1e80922e69848e89b544aaa9cef578804d
CRC32 51D38626
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:6660511

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Information on Execution

Analysis
Category Started Completed Duration Routing Logs
FILE July 8, 2025, 4:21 p.m. July 8, 2025, 4:27 p.m. 381 seconds internet Show Analyzer Log
Show Cuckoo Log

Analyzer Log

2025-07-07 15:02:27,015 [analyzer] DEBUG: Starting analyzer from: C:\tmp4w2pkt
2025-07-07 15:02:27,015 [analyzer] DEBUG: Pipe server name: \??\PIPE\PIZKtvfLTEhtBypr
2025-07-07 15:02:27,015 [analyzer] DEBUG: Log pipe server name: \??\PIPE\UTFEgpniILVlkxfqJjPNpqvGLYXXgb
2025-07-07 15:02:27,015 [analyzer] DEBUG: No analysis package specified, trying to detect it automagically.
2025-07-07 15:02:27,030 [analyzer] INFO: Automatically selected analysis package "exe"
2025-07-07 15:02:27,342 [analyzer] DEBUG: Started auxiliary module Curtain
2025-07-07 15:02:27,342 [analyzer] DEBUG: Started auxiliary module DbgView
2025-07-07 15:02:27,842 [analyzer] DEBUG: Started auxiliary module Disguise
2025-07-07 15:02:28,062 [analyzer] DEBUG: Loaded monitor into process with pid 508
2025-07-07 15:02:28,062 [analyzer] DEBUG: Started auxiliary module DumpTLSMasterSecrets
2025-07-07 15:02:28,062 [analyzer] DEBUG: Started auxiliary module Human
2025-07-07 15:02:28,062 [analyzer] DEBUG: Started auxiliary module InstallCertificate
2025-07-07 15:02:28,062 [analyzer] DEBUG: Started auxiliary module Reboot
2025-07-07 15:02:28,155 [analyzer] DEBUG: Started auxiliary module RecentFiles
2025-07-07 15:02:28,155 [analyzer] DEBUG: Started auxiliary module Screenshots
2025-07-07 15:02:28,171 [analyzer] DEBUG: Started auxiliary module Sysmon
2025-07-07 15:02:28,171 [analyzer] DEBUG: Started auxiliary module LoadZer0m0n
2025-07-07 15:02:28,296 [lib.api.process] INFO: Successfully executed process from path u'C:\\Users\\ADMINI~1\\AppData\\Local\\Temp\\b741e4a368b0db29_backup.exe' with arguments '' and pid 728
2025-07-07 15:02:28,546 [analyzer] DEBUG: Loaded monitor into process with pid 728
2025-07-07 15:02:28,608 [analyzer] INFO: Added new file to list with pid 728 and path C:\Users\Administrator\AppData\Local\Temp\backup.exe
2025-07-07 15:02:28,625 [analyzer] INFO: Added new file to list with pid 728 and path C:\Users\Administrator\AppData\Local\Temp\0C7910BA-F902-421E-9E69-CF9AEE0DD4D7\backup.exe
2025-07-07 15:02:28,703 [analyzer] INFO: Injected into process with pid 2752 and name ''
2025-07-07 15:02:28,858 [analyzer] DEBUG: Loaded monitor into process with pid 2752
2025-07-07 15:02:28,937 [analyzer] INFO: Added new file to list with pid 728 and path C:\Users\Administrator\AppData\Local\Temp\9C7EA51D-B2B9-4ABB-A82F-1B32707A146E\backup.exe
2025-07-07 15:02:29,030 [analyzer] INFO: Added new file to list with pid 728 and path C:\Users\Administrator\AppData\Local\Temp\hsperfdata_Administrator\backup.exe
2025-07-07 15:02:29,905 [analyzer] INFO: Added new file to list with pid 2752 and path C:\backup.exe
2025-07-07 15:05:47,296 [analyzer] INFO: Analysis timeout hit, terminating analysis.
2025-07-07 15:05:48,342 [analyzer] INFO: Terminating remaining processes before shutdown.
2025-07-07 15:05:48,342 [lib.api.process] INFO: Successfully terminated process with pid 728.
2025-07-07 15:05:48,342 [lib.api.process] INFO: Successfully terminated process with pid 2752.
2025-07-07 15:05:48,375 [analyzer] INFO: Analysis completed.

Cuckoo Log

2025-07-08 16:21:08,124 [cuckoo.core.scheduler] INFO: Task #6667494: acquired machine win7x6423 (label=win7x6423)
2025-07-08 16:21:08,126 [cuckoo.core.resultserver] DEBUG: Now tracking machine 192.168.168.223 for task #6667494
2025-07-08 16:21:08,421 [cuckoo.auxiliary.sniffer] INFO: Started sniffer with PID 509791 (interface=vboxnet0, host=192.168.168.223)
2025-07-08 16:21:08,585 [cuckoo.machinery.virtualbox] DEBUG: Starting vm win7x6423
2025-07-08 16:21:09,214 [cuckoo.machinery.virtualbox] DEBUG: Restoring virtual machine win7x6423 to vmcloak
2025-07-08 16:21:57,121 [cuckoo.core.guest] INFO: Starting analysis #6667494 on guest (id=win7x6423, ip=192.168.168.223)
2025-07-08 16:21:58,127 [cuckoo.core.guest] DEBUG: win7x6423: not ready yet
2025-07-08 16:22:03,149 [cuckoo.core.guest] INFO: Guest is running Cuckoo Agent 0.10 (id=win7x6423, ip=192.168.168.223)
2025-07-08 16:22:03,245 [cuckoo.core.guest] DEBUG: Uploading analyzer to guest (id=win7x6423, ip=192.168.168.223, monitor=latest, size=6660546)
2025-07-08 16:22:04,513 [cuckoo.core.resultserver] DEBUG: Task #6667494: live log analysis.log initialized.
2025-07-08 16:22:05,518 [cuckoo.core.resultserver] DEBUG: Task #6667494 is sending a BSON stream
2025-07-08 16:22:05,985 [cuckoo.core.resultserver] DEBUG: Task #6667494 is sending a BSON stream
2025-07-08 16:22:06,315 [cuckoo.core.resultserver] DEBUG: Task #6667494 is sending a BSON stream
2025-07-08 16:22:06,790 [cuckoo.core.resultserver] DEBUG: Task #6667494: File upload for 'shots/0001.jpg'
2025-07-08 16:22:06,808 [cuckoo.core.resultserver] DEBUG: Task #6667494 uploaded file length: 133432
2025-07-08 16:22:19,281 [cuckoo.core.guest] DEBUG: win7x6423: analysis #6667494 still processing
2025-07-08 16:22:34,397 [cuckoo.core.guest] DEBUG: win7x6423: analysis #6667494 still processing
2025-07-08 16:22:49,620 [cuckoo.core.guest] DEBUG: win7x6423: analysis #6667494 still processing
2025-07-08 16:23:04,798 [cuckoo.core.guest] DEBUG: win7x6423: analysis #6667494 still processing
2025-07-08 16:23:19,966 [cuckoo.core.guest] DEBUG: win7x6423: analysis #6667494 still processing
2025-07-08 16:23:36,231 [cuckoo.core.guest] DEBUG: win7x6423: analysis #6667494 still processing
2025-07-08 16:23:51,397 [cuckoo.core.guest] DEBUG: win7x6423: analysis #6667494 still processing
2025-07-08 16:24:06,487 [cuckoo.core.guest] DEBUG: win7x6423: analysis #6667494 still processing
2025-07-08 16:24:21,568 [cuckoo.core.guest] DEBUG: win7x6423: analysis #6667494 still processing
2025-07-08 16:24:36,671 [cuckoo.core.guest] DEBUG: win7x6423: analysis #6667494 still processing
2025-07-08 16:24:51,752 [cuckoo.core.guest] DEBUG: win7x6423: analysis #6667494 still processing
2025-07-08 16:25:06,831 [cuckoo.core.guest] DEBUG: win7x6423: analysis #6667494 still processing
2025-07-08 16:25:21,908 [cuckoo.core.guest] DEBUG: win7x6423: analysis #6667494 still processing
2025-07-08 16:25:25,003 [cuckoo.core.resultserver] DEBUG: Task #6667494: File upload for 'curtain/1751893547.48.curtain.log'
2025-07-08 16:25:25,005 [cuckoo.core.resultserver] DEBUG: Task #6667494 uploaded file length: 36
2025-07-08 16:25:25,776 [cuckoo.core.resultserver] DEBUG: Task #6667494: File upload for 'sysmon/1751893548.25.sysmon.xml'
2025-07-08 16:25:25,868 [cuckoo.core.resultserver] DEBUG: Task #6667494 uploaded file length: 10929784
2025-07-08 16:25:25,966 [cuckoo.core.resultserver] DEBUG: Task #6667494 had connection reset for <Context for LOG>
2025-07-08 16:25:25,968 [cuckoo.core.resultserver] DEBUG: Task #6667494: File upload for 'files/52189732dccb8a7d_backup.exe'
2025-07-08 16:25:25,972 [cuckoo.core.resultserver] DEBUG: Task #6667494 uploaded file length: 125756
2025-07-08 16:25:25,974 [cuckoo.core.resultserver] DEBUG: Task #6667494: File upload for 'files/8e40b8d58b4f1ef9_backup.exe'
2025-07-08 16:25:25,985 [cuckoo.core.resultserver] DEBUG: Task #6667494: File upload for 'files/4c83e32769753ce1_backup.exe'
2025-07-08 16:25:25,988 [cuckoo.core.resultserver] DEBUG: Task #6667494 uploaded file length: 125758
2025-07-08 16:25:25,989 [cuckoo.core.resultserver] DEBUG: Task #6667494 uploaded file length: 125756
2025-07-08 16:25:27,997 [cuckoo.core.guest] INFO: win7x6423: analysis completed successfully
2025-07-08 16:25:28,019 [cuckoo.core.plugins] DEBUG: Stopped auxiliary module: Redsocks
2025-07-08 16:25:28,046 [cuckoo.core.plugins] DEBUG: Stopped auxiliary module: Sniffer
2025-07-08 16:25:28,973 [cuckoo.machinery.virtualbox] INFO: Successfully generated memory dump for virtual machine with label win7x6423 to path /srv/cuckoo/cwd/storage/analyses/6667494/memory.dmp
2025-07-08 16:25:28,974 [cuckoo.machinery.virtualbox] DEBUG: Stopping vm win7x6423
2025-07-08 16:27:29,415 [cuckoo.core.resultserver] DEBUG: Stopped tracking machine 192.168.168.223 for task #6667494
2025-07-08 16:27:29,775 [cuckoo.core.scheduler] DEBUG: Released database task #6667494
2025-07-08 16:27:29,791 [cuckoo.core.scheduler] INFO: Task #6667494: 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: 728
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 13 AntiVirus engine on IRMA as malicious (13 events)
G Data Antivirus (Windows) Virus: Trojan.GenericKD.76484443 (Engine A), Win32.Trojan.Vilsel.B (Engine B)
Avast Core Security (Linux) Win32:Evo-gen [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.76484443(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.76484443
Kaspersky Standard (Windows) Trojan.Win32.Vilsel.loy
Emsisoft Commandline Scanner (Windows) Trojan.GenericKD.76484443 (B)
Screenshots
Name Response Post-Analysis Lookup
No hosts contacted.
IP Address Status Action VT Location
No hosts contacted.
Cuckoo

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