Summary

9d1cfc0f6513f75c_backup.exe

File 9d1cfc0f6513f75c_backup.exe

Summary
Download Resubmit sample

Size 89.8KB
Type PE32 executable (GUI) Intel 80386, for MS Windows
MD5 4e3dbfee8e57e1a49621ab04ab98860d
SHA1 0e04c746c49574913c13f999c78c4f7efa9e2f72
SHA256 9d1cfc0f6513f75c537fe7fe95502317a766aaacc7cceeda452c019a6951779e
SHA512
e1436378a03897efa299da037c188a8cd200d0e00704b8f7d17e19de9f43ff81496d059620160ea190d69173e94d63490da119b34a535e53fc6a47151d491e4e
CRC32 4A33DF87
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:7095165

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Information on Execution

Analysis
Category Started Completed Duration Routing Logs
FILE Nov. 23, 2025, 12:12 p.m. Nov. 23, 2025, 12:19 p.m. 420 seconds internet Show Analyzer Log
Show Cuckoo Log

Analyzer Log

2025-11-16 14:35:12,015 [analyzer] DEBUG: Starting analyzer from: C:\tmpmdfut4
2025-11-16 14:35:12,015 [analyzer] DEBUG: Pipe server name: \??\PIPE\pIhXfuPrdOzXJAJY
2025-11-16 14:35:12,015 [analyzer] DEBUG: Log pipe server name: \??\PIPE\OBpiepKRTgziWnCu
2025-11-16 14:35:12,015 [analyzer] DEBUG: No analysis package specified, trying to detect it automagically.
2025-11-16 14:35:12,030 [analyzer] INFO: Automatically selected analysis package "exe"
2025-11-16 14:35:12,265 [analyzer] DEBUG: Started auxiliary module Curtain
2025-11-16 14:35:12,265 [analyzer] DEBUG: Started auxiliary module DbgView
2025-11-16 14:35:12,671 [analyzer] DEBUG: Started auxiliary module Disguise
2025-11-16 14:35:12,890 [analyzer] DEBUG: Loaded monitor into process with pid 504
2025-11-16 14:35:12,890 [analyzer] DEBUG: Started auxiliary module DumpTLSMasterSecrets
2025-11-16 14:35:12,890 [analyzer] DEBUG: Started auxiliary module Human
2025-11-16 14:35:12,890 [analyzer] DEBUG: Started auxiliary module InstallCertificate
2025-11-16 14:35:12,890 [analyzer] DEBUG: Started auxiliary module Reboot
2025-11-16 14:35:13,000 [analyzer] DEBUG: Started auxiliary module RecentFiles
2025-11-16 14:35:13,000 [analyzer] DEBUG: Started auxiliary module Screenshots
2025-11-16 14:35:13,000 [analyzer] DEBUG: Started auxiliary module Sysmon
2025-11-16 14:35:13,000 [analyzer] DEBUG: Started auxiliary module LoadZer0m0n
2025-11-16 14:35:13,140 [lib.api.process] INFO: Successfully executed process from path u'C:\\Users\\ADMINI~1\\AppData\\Local\\Temp\\9d1cfc0f6513f75c_backup.exe' with arguments '' and pid 1392
2025-11-16 14:35:13,328 [analyzer] DEBUG: Loaded monitor into process with pid 1392
2025-11-16 14:35:13,390 [analyzer] INFO: Added new file to list with pid 1392 and path C:\Users\Administrator\AppData\Local\Temp\backup.exe
2025-11-16 14:35:13,405 [analyzer] INFO: Added new file to list with pid 1392 and path C:\Users\Administrator\AppData\Local\Temp\0C7910BA-F902-421E-9E69-CF9AEE0DD4D7\update.exe
2025-11-16 14:35:13,453 [analyzer] INFO: Injected into process with pid 2924 and name ''
2025-11-16 14:35:13,703 [analyzer] DEBUG: Loaded monitor into process with pid 2924
2025-11-16 14:35:13,765 [analyzer] INFO: Added new file to list with pid 1392 and path C:\Users\Administrator\AppData\Local\Temp\9C7EA51D-B2B9-4ABB-A82F-1B32707A146E\update.exe
2025-11-16 14:35:13,858 [analyzer] INFO: Added new file to list with pid 1392 and path C:\Users\Administrator\AppData\Local\Temp\hsperfdata_Administrator\backup.exe
2025-11-16 14:35:14,733 [analyzer] INFO: Added new file to list with pid 2924 and path C:\backup.exe
2025-11-16 14:38:32,155 [analyzer] INFO: Analysis timeout hit, terminating analysis.
2025-11-16 14:38:33,203 [analyzer] INFO: Terminating remaining processes before shutdown.
2025-11-16 14:38:33,203 [lib.api.process] INFO: Successfully terminated process with pid 1392.
2025-11-16 14:38:33,203 [lib.api.process] INFO: Successfully terminated process with pid 2924.
2025-11-16 14:38:33,217 [analyzer] INFO: Analysis completed.

Cuckoo Log

2025-11-23 12:12:57,884 [cuckoo.core.scheduler] DEBUG: Task #7184563: no machine available yet
2025-11-23 12:12:58,926 [cuckoo.core.scheduler] DEBUG: Task #7184563: no machine available yet
2025-11-23 12:12:59,951 [cuckoo.core.scheduler] DEBUG: Task #7184563: no machine available yet
2025-11-23 12:13:00,990 [cuckoo.core.scheduler] DEBUG: Task #7184563: no machine available yet
2025-11-23 12:13:02,015 [cuckoo.core.scheduler] DEBUG: Task #7184563: no machine available yet
2025-11-23 12:13:03,036 [cuckoo.core.scheduler] DEBUG: Task #7184563: no machine available yet
2025-11-23 12:13:04,060 [cuckoo.core.scheduler] DEBUG: Task #7184563: no machine available yet
2025-11-23 12:13:05,086 [cuckoo.core.scheduler] DEBUG: Task #7184563: no machine available yet
2025-11-23 12:13:06,104 [cuckoo.core.scheduler] DEBUG: Task #7184563: no machine available yet
2025-11-23 12:13:07,197 [cuckoo.core.scheduler] DEBUG: Task #7184563: no machine available yet
2025-11-23 12:13:08,217 [cuckoo.core.scheduler] DEBUG: Task #7184563: no machine available yet
2025-11-23 12:13:09,240 [cuckoo.core.scheduler] INFO: Task #7184563: acquired machine win7x644 (label=win7x644)
2025-11-23 12:13:09,241 [cuckoo.core.resultserver] DEBUG: Now tracking machine 192.168.168.204 for task #7184563
2025-11-23 12:13:09,548 [cuckoo.auxiliary.sniffer] INFO: Started sniffer with PID 3894332 (interface=vboxnet0, host=192.168.168.204)
2025-11-23 12:13:09,668 [cuckoo.machinery.virtualbox] DEBUG: Starting vm win7x644
2025-11-23 12:13:10,683 [cuckoo.machinery.virtualbox] DEBUG: Restoring virtual machine win7x644 to vmcloak
2025-11-23 12:15:13,230 [cuckoo.core.guest] INFO: Starting analysis #7184563 on guest (id=win7x644, ip=192.168.168.204)
2025-11-23 12:15:14,233 [cuckoo.core.guest] DEBUG: win7x644: not ready yet
2025-11-23 12:15:19,253 [cuckoo.core.guest] INFO: Guest is running Cuckoo Agent 0.10 (id=win7x644, ip=192.168.168.204)
2025-11-23 12:15:19,309 [cuckoo.core.guest] DEBUG: Uploading analyzer to guest (id=win7x644, ip=192.168.168.204, monitor=latest, size=6660546)
2025-11-23 12:15:20,423 [cuckoo.core.resultserver] DEBUG: Task #7184563: live log analysis.log initialized.
2025-11-23 12:15:21,255 [cuckoo.core.resultserver] DEBUG: Task #7184563 is sending a BSON stream
2025-11-23 12:15:21,763 [cuckoo.core.resultserver] DEBUG: Task #7184563 is sending a BSON stream
2025-11-23 12:15:22,050 [cuckoo.core.resultserver] DEBUG: Task #7184563 is sending a BSON stream
2025-11-23 12:15:22,632 [cuckoo.core.resultserver] DEBUG: Task #7184563: File upload for 'shots/0001.jpg'
2025-11-23 12:15:22,807 [cuckoo.core.resultserver] DEBUG: Task #7184563 uploaded file length: 133533
2025-11-23 12:15:35,370 [cuckoo.core.guest] DEBUG: win7x644: analysis #7184563 still processing
2025-11-23 12:15:50,967 [cuckoo.core.guest] DEBUG: win7x644: analysis #7184563 still processing
2025-11-23 12:16:06,208 [cuckoo.core.guest] DEBUG: win7x644: analysis #7184563 still processing
2025-11-23 12:16:21,328 [cuckoo.core.guest] DEBUG: win7x644: analysis #7184563 still processing
2025-11-23 12:16:36,468 [cuckoo.core.guest] DEBUG: win7x644: analysis #7184563 still processing
2025-11-23 12:16:51,563 [cuckoo.core.guest] DEBUG: win7x644: analysis #7184563 still processing
2025-11-23 12:17:06,659 [cuckoo.core.guest] DEBUG: win7x644: analysis #7184563 still processing
2025-11-23 12:17:21,735 [cuckoo.core.guest] DEBUG: win7x644: analysis #7184563 still processing
2025-11-23 12:17:36,856 [cuckoo.core.guest] DEBUG: win7x644: analysis #7184563 still processing
2025-11-23 12:17:51,928 [cuckoo.core.guest] DEBUG: win7x644: analysis #7184563 still processing
2025-11-23 12:18:07,004 [cuckoo.core.guest] DEBUG: win7x644: analysis #7184563 still processing
2025-11-23 12:18:22,082 [cuckoo.core.guest] DEBUG: win7x644: analysis #7184563 still processing
2025-11-23 12:18:37,161 [cuckoo.core.guest] DEBUG: win7x644: analysis #7184563 still processing
2025-11-23 12:18:40,774 [cuckoo.core.resultserver] DEBUG: Task #7184563: File upload for 'curtain/1763300312.34.curtain.log'
2025-11-23 12:18:40,777 [cuckoo.core.resultserver] DEBUG: Task #7184563 uploaded file length: 36
2025-11-23 12:18:41,543 [cuckoo.core.resultserver] DEBUG: Task #7184563: File upload for 'sysmon/1763300313.11.sysmon.xml'
2025-11-23 12:18:41,636 [cuckoo.core.resultserver] DEBUG: Task #7184563 uploaded file length: 10332660
2025-11-23 12:18:41,655 [cuckoo.core.resultserver] DEBUG: Task #7184563: File upload for 'files/a54395b461a0f279_backup.exe'
2025-11-23 12:18:41,658 [cuckoo.core.resultserver] DEBUG: Task #7184563: File upload for 'files/fb70ce4652a2509d_backup.exe'
2025-11-23 12:18:41,659 [cuckoo.core.resultserver] DEBUG: Task #7184563 uploaded file length: 91913
2025-11-23 12:18:41,663 [cuckoo.core.resultserver] DEBUG: Task #7184563 uploaded file length: 91915
2025-11-23 12:18:41,674 [cuckoo.core.resultserver] DEBUG: Task #7184563 had connection reset for <Context for LOG>
2025-11-23 12:18:43,192 [cuckoo.core.guest] INFO: win7x644: analysis completed successfully
2025-11-23 12:18:43,201 [cuckoo.core.plugins] DEBUG: Stopped auxiliary module: Redsocks
2025-11-23 12:18:43,229 [cuckoo.core.plugins] DEBUG: Stopped auxiliary module: Sniffer
2025-11-23 12:18:44,163 [cuckoo.machinery.virtualbox] INFO: Successfully generated memory dump for virtual machine with label win7x644 to path /srv/cuckoo/cwd/storage/analyses/7184563/memory.dmp
2025-11-23 12:18:44,164 [cuckoo.machinery.virtualbox] DEBUG: Stopping vm win7x644
2025-11-23 12:19:58,152 [cuckoo.core.resultserver] DEBUG: Stopped tracking machine 192.168.168.204 for task #7184563
2025-11-23 12:19:58,646 [cuckoo.core.scheduler] DEBUG: Released database task #7184563
2025-11-23 12:19:58,671 [cuckoo.core.scheduler] INFO: Task #7184563: analysis procedure completed

Signatures

Yara rule detected for file (1 event)
description The packer/protector section names/keywords rule suspicious_packer_section
Allocates read-write-execute memory (usually to unpack itself) (3 events)
Time & API Arguments Status Return Repeated

NtProtectVirtualMemory

 process_identifier: 2924
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 0
length: 4096
protection: 64 (PAGE_EXECUTE_READWRITE)
base_address: 0x74f61000
process_handle: 0xffffffff
1 0 0

NtProtectVirtualMemory

 process_identifier: 2924
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 0
length: 4096
protection: 64 (PAGE_EXECUTE_READWRITE)
base_address: 0x73ad1000
process_handle: 0xffffffff
1 0 0

NtProtectVirtualMemory

 process_identifier: 2924
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 0
length: 4096
protection: 64 (PAGE_EXECUTE_READWRITE)
base_address: 0x738f1000
process_handle: 0xffffffff
1 0 0
Creates executable files on the filesystem (5 events)
file C:\Users\Administrator\AppData\Local\Temp\0C7910BA-F902-421E-9E69-CF9AEE0DD4D7\update.exe
file C:\Users\Administrator\AppData\Local\Temp\9C7EA51D-B2B9-4ABB-A82F-1B32707A146E\update.exe
file C:\backup.exe
file C:\Users\Administrator\AppData\Local\Temp\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\hsperfdata_Administrator\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: 1392
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 1
length: 24576
protection: 32 (PAGE_EXECUTE_READ)
base_address: 0x01c00000
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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