Summary

5feb268c891b28f4_backup.exe

File 5feb268c891b28f4_backup.exe

Summary
Download Resubmit sample

Size 89.5KB
Type PE32 executable (GUI) Intel 80386, for MS Windows
MD5 6b01854bc148c00cddffe8e4129e6f65
SHA1 0c9e9596b8fcd5c498162d5283bd82dfa5607bb3
SHA256 5feb268c891b28f43d77cfd9fbe3d5f47b2346d9641809225545521764b5a208
SHA512
c44f238a77b0b7910fbae9d5948add46492beb1113b153f85a5aea5d3fbd706f7b5feac6fb43dda195dd2a8253a52fb941609beb95190075b3bb0855e73ccebb
CRC32 32232D8B
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:6700425

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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, 4:28 p.m. 530 seconds internet Show Analyzer Log
Show Cuckoo Log

Analyzer Log

2025-07-13 19:42:04,015 [analyzer] DEBUG: Starting analyzer from: C:\tmptpreht
2025-07-13 19:42:04,015 [analyzer] DEBUG: Pipe server name: \??\PIPE\VjiFjultLiSXKiINWbDpzMDpUSl
2025-07-13 19:42:04,015 [analyzer] DEBUG: Log pipe server name: \??\PIPE\bdpnXxsPTyAAhrDE
2025-07-13 19:42:04,015 [analyzer] DEBUG: No analysis package specified, trying to detect it automagically.
2025-07-13 19:42:04,015 [analyzer] INFO: Automatically selected analysis package "exe"
2025-07-13 19:42:04,453 [analyzer] DEBUG: Started auxiliary module Curtain
2025-07-13 19:42:04,453 [analyzer] DEBUG: Started auxiliary module DbgView
2025-07-13 19:42:04,858 [analyzer] DEBUG: Started auxiliary module Disguise
2025-07-13 19:42:05,046 [analyzer] DEBUG: Loaded monitor into process with pid 500
2025-07-13 19:42:05,046 [analyzer] DEBUG: Started auxiliary module DumpTLSMasterSecrets
2025-07-13 19:42:05,046 [analyzer] DEBUG: Started auxiliary module Human
2025-07-13 19:42:05,046 [analyzer] DEBUG: Started auxiliary module InstallCertificate
2025-07-13 19:42:05,046 [analyzer] DEBUG: Started auxiliary module Reboot
2025-07-13 19:42:05,125 [analyzer] DEBUG: Started auxiliary module RecentFiles
2025-07-13 19:42:05,125 [analyzer] DEBUG: Started auxiliary module Screenshots
2025-07-13 19:42:05,125 [analyzer] DEBUG: Started auxiliary module Sysmon
2025-07-13 19:42:05,125 [analyzer] DEBUG: Started auxiliary module LoadZer0m0n
2025-07-13 19:42:05,265 [lib.api.process] INFO: Successfully executed process from path u'C:\\Users\\ADMINI~1\\AppData\\Local\\Temp\\5feb268c891b28f4_backup.exe' with arguments '' and pid 1384
2025-07-13 19:42:05,453 [analyzer] DEBUG: Loaded monitor into process with pid 1384
2025-07-13 19:42:05,500 [analyzer] INFO: Added new file to list with pid 1384 and path C:\Users\Administrator\AppData\Local\Temp\backup.exe
2025-07-13 19:42:05,515 [analyzer] INFO: Added new file to list with pid 1384 and path C:\Users\Administrator\AppData\Local\Temp\0C7910BA-F902-421E-9E69-CF9AEE0DD4D7\backup.exe
2025-07-13 19:42:05,578 [analyzer] INFO: Injected into process with pid 1380 and name ''
2025-07-13 19:42:05,733 [analyzer] DEBUG: Loaded monitor into process with pid 1380
2025-07-13 19:42:05,796 [analyzer] INFO: Added new file to list with pid 1384 and path C:\Users\Administrator\AppData\Local\Temp\9C7EA51D-B2B9-4ABB-A82F-1B32707A146E\backup.exe
2025-07-13 19:42:05,858 [analyzer] INFO: Added new file to list with pid 1384 and path C:\Users\Administrator\AppData\Local\Temp\hsperfdata_Administrator\backup.exe
2025-07-13 19:42:06,765 [analyzer] INFO: Added new file to list with pid 1380 and path C:\backup.exe
2025-07-13 19:45:24,265 [analyzer] INFO: Analysis timeout hit, terminating analysis.
2025-07-13 19:45:25,405 [analyzer] INFO: Terminating remaining processes before shutdown.
2025-07-13 19:45:25,405 [lib.api.process] INFO: Successfully terminated process with pid 1384.
2025-07-13 19:45:25,405 [lib.api.process] INFO: Successfully terminated process with pid 1380.
2025-07-13 19:45:25,437 [analyzer] INFO: Analysis completed.

Cuckoo Log

2025-07-17 16:20:05,206 [cuckoo.core.scheduler] INFO: Task #6727559: acquired machine win7x641 (label=win7x641)
2025-07-17 16:20:05,207 [cuckoo.core.resultserver] DEBUG: Now tracking machine 192.168.168.201 for task #6727559
2025-07-17 16:20:05,787 [cuckoo.auxiliary.sniffer] INFO: Started sniffer with PID 591414 (interface=vboxnet0, host=192.168.168.201)
2025-07-17 16:20:05,888 [cuckoo.machinery.virtualbox] DEBUG: Starting vm win7x641
2025-07-17 16:20:07,052 [cuckoo.machinery.virtualbox] DEBUG: Restoring virtual machine win7x641 to vmcloak
2025-07-17 16:23:07,704 [cuckoo.core.guest] INFO: Starting analysis #6727559 on guest (id=win7x641, ip=192.168.168.201)
2025-07-17 16:23:08,710 [cuckoo.core.guest] DEBUG: win7x641: not ready yet
2025-07-17 16:23:13,748 [cuckoo.core.guest] INFO: Guest is running Cuckoo Agent 0.10 (id=win7x641, ip=192.168.168.201)
2025-07-17 16:23:13,830 [cuckoo.core.guest] DEBUG: Uploading analyzer to guest (id=win7x641, ip=192.168.168.201, monitor=latest, size=6660546)
2025-07-17 16:23:15,019 [cuckoo.core.resultserver] DEBUG: Task #6727559: live log analysis.log initialized.
2025-07-17 16:23:16,009 [cuckoo.core.resultserver] DEBUG: Task #6727559 is sending a BSON stream
2025-07-17 16:23:16,398 [cuckoo.core.resultserver] DEBUG: Task #6727559 is sending a BSON stream
2025-07-17 16:23:16,680 [cuckoo.core.resultserver] DEBUG: Task #6727559 is sending a BSON stream
2025-07-17 16:23:17,255 [cuckoo.core.resultserver] DEBUG: Task #6727559: File upload for 'shots/0001.jpg'
2025-07-17 16:23:17,273 [cuckoo.core.resultserver] DEBUG: Task #6727559 uploaded file length: 133463
2025-07-17 16:23:29,852 [cuckoo.core.guest] DEBUG: win7x641: analysis #6727559 still processing
2025-07-17 16:23:45,237 [cuckoo.core.guest] DEBUG: win7x641: analysis #6727559 still processing
2025-07-17 16:24:00,440 [cuckoo.core.guest] DEBUG: win7x641: analysis #6727559 still processing
2025-07-17 16:24:15,585 [cuckoo.core.guest] DEBUG: win7x641: analysis #6727559 still processing
2025-07-17 16:24:30,736 [cuckoo.core.guest] DEBUG: win7x641: analysis #6727559 still processing
2025-07-17 16:24:46,104 [cuckoo.core.guest] DEBUG: win7x641: analysis #6727559 still processing
2025-07-17 16:25:01,417 [cuckoo.core.guest] DEBUG: win7x641: analysis #6727559 still processing
2025-07-17 16:25:16,506 [cuckoo.core.guest] DEBUG: win7x641: analysis #6727559 still processing
2025-07-17 16:25:31,779 [cuckoo.core.guest] DEBUG: win7x641: analysis #6727559 still processing
2025-07-17 16:25:47,035 [cuckoo.core.guest] DEBUG: win7x641: analysis #6727559 still processing
2025-07-17 16:26:02,666 [cuckoo.core.guest] DEBUG: win7x641: analysis #6727559 still processing
2025-07-17 16:26:18,111 [cuckoo.core.guest] DEBUG: win7x641: analysis #6727559 still processing
2025-07-17 16:26:33,560 [cuckoo.core.guest] DEBUG: win7x641: analysis #6727559 still processing
2025-07-17 16:26:35,529 [cuckoo.core.resultserver] DEBUG: Task #6727559: File upload for 'curtain/1752428724.5.curtain.log'
2025-07-17 16:26:35,533 [cuckoo.core.resultserver] DEBUG: Task #6727559 uploaded file length: 36
2025-07-17 16:26:36,303 [cuckoo.core.resultserver] DEBUG: Task #6727559: File upload for 'sysmon/1752428725.27.sysmon.xml'
2025-07-17 16:26:36,439 [cuckoo.core.resultserver] DEBUG: Task #6727559 uploaded file length: 9411620
2025-07-17 16:26:36,478 [cuckoo.core.resultserver] DEBUG: Task #6727559: File upload for 'files/868e87d826d9deaa_backup.exe'
2025-07-17 16:26:36,480 [cuckoo.core.resultserver] DEBUG: Task #6727559: File upload for 'files/93e6e621a8ede78f_backup.exe'
2025-07-17 16:26:36,482 [cuckoo.core.resultserver] DEBUG: Task #6727559 uploaded file length: 91649
2025-07-17 16:26:36,485 [cuckoo.core.resultserver] DEBUG: Task #6727559 uploaded file length: 91651
2025-07-17 16:26:36,488 [cuckoo.core.resultserver] DEBUG: Task #6727559 had connection reset for <Context for LOG>
2025-07-17 16:26:36,589 [cuckoo.core.guest] INFO: win7x641: analysis completed successfully
2025-07-17 16:26:36,604 [cuckoo.core.plugins] DEBUG: Stopped auxiliary module: Redsocks
2025-07-17 16:26:36,655 [cuckoo.core.plugins] DEBUG: Stopped auxiliary module: Sniffer
2025-07-17 16:26:38,462 [cuckoo.machinery.virtualbox] INFO: Successfully generated memory dump for virtual machine with label win7x641 to path /srv/cuckoo/cwd/storage/analyses/6727559/memory.dmp
2025-07-17 16:26:38,463 [cuckoo.machinery.virtualbox] DEBUG: Stopping vm win7x641
2025-07-17 16:28:54,632 [cuckoo.core.resultserver] DEBUG: Stopped tracking machine 192.168.168.201 for task #6727559
2025-07-17 16:28:55,032 [cuckoo.core.scheduler] DEBUG: Released database task #6727559
2025-07-17 16:28:55,048 [cuckoo.core.scheduler] INFO: Task #6727559: 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: 1384
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 1
length: 24576
protection: 32 (PAGE_EXECUTE_READ)
base_address: 0x00320000
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 12 AntiVirus engine on IRMA as malicious (12 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
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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