MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 9155355baf8df04eb80c98c785632b808e63e255d92fe05572f2e5dc29ca69bc. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


GuLoader


Vendor detections: 10


Intelligence 10 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 9155355baf8df04eb80c98c785632b808e63e255d92fe05572f2e5dc29ca69bc
SHA3-384 hash: e8181041eb76f0ae4d21511597f59ef6616b6f9762059b3d10dc18adc502c0354a26ea02e611823866ff69cf74578ee0
SHA1 hash: 6b03322af58c9b3b9725837b3d480b967a814e35
MD5 hash: f2e62219807ff58ea21ecdd6ccf16064
humanhash: early-oranges-bluebird-mobile
File name:Dopis_prenova 922, DE, EN, SL, HR.docx.vbs
Download: download sample
Signature GuLoader
Create hunting rule
File size:53'727 bytes
First seen:2023-10-27 15:54:48 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 768:kVvv/koXiysuD1FdWzngqW1OAT7U3RTuTlZ40HhVuP815Ecvtc+Qt6AiFj0:ef2Xu3dwngqfATYx2vb59vW0Fj0
Threatray 872 similar samples on MalwareBazaar
TLSH T151337DE5EAA0062B0C0B37D9DC420D8985BC815905369165FEED13DEA21B95CE3BDF2E
Reporter abuse_ch
Tags:GuLoader vbs

Intelligence

File Origin
# of uploads :
1
# of downloads :
99
Origin country :
NL NL
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/456754/
Detection(s):
SecuriteInfo.com.Script.SNH-gen.15272.12833.UNOFFICIAL
Create hunting rule

Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
cerberus masquerade
Link:
https://www.filescan.io/uploads/653bdd5972356e4f29e80d37/reports/196697c5-4772-4166-8d59-85cfc0068a16/overview
Verdict:
Malicious
Labled as:
Valyria
Link:
https://www.hybrid-analysis.com/sample/9155355baf8df04eb80c98c785632b808e63e255d92fe05572f2e5dc29ca69bc
Result
Verdict:
MALICIOUS
Result
Threat name:
AgentTesla, GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1333415
Signature
Antivirus detection for URL or domain
Found suspicious powershell code related to unpacking or dynamic code loading
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for submitted file
Obfuscated command line found
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Suspicious powershell command line found
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses an obfuscated file name to hide its real file extension (double extension)
VBScript performs obfuscated calls to suspicious functions
Very long command line found
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Wscript starts Powershell (via cmd or directly)
Yara detected AgentTesla
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1333415 Sample: Dopis_prenova_922,_DE,_EN,_... Startdate: 27/10/2023 Architecture: WINDOWS Score: 100 24 trualliant.com 2->24 26 mail.trualliant.com 2->26 28 5 other IPs or domains 2->28 36 Malicious sample detected (through community Yara rule) 2->36 38 Antivirus detection for URL or domain 2->38 40 Multi AV Scanner detection for submitted file 2->40 42 3 other signatures 2->42 9 wscript.exe 2->9         started        signatures3 process4 signatures5 52 VBScript performs obfuscated calls to suspicious functions 9->52 54 Suspicious powershell command line found 9->54 56 Wscript starts Powershell (via cmd or directly) 9->56 58 3 other signatures 9->58 12 powershell.exe 16 9->12         started        process6 signatures7 60 Suspicious powershell command line found 12->60 62 Obfuscated command line found 12->62 64 Very long command line found 12->64 15 powershell.exe 23 12->15         started        18 conhost.exe 12->18         started        process8 signatures9 66 Writes to foreign memory regions 15->66 68 Maps a DLL or memory area into another process 15->68 70 Found suspicious powershell code related to unpacking or dynamic code loading 15->70 20 CasPol.exe 15 10 15->20         started        process10 dnsIp11 30 api4.ipify.org 64.185.227.156, 443, 49727 WEBNXUS United States 20->30 32 drive.google.com 172.253.63.100, 443, 49716, 49718 GOOGLEUS United States 20->32 34 2 other IPs or domains 20->34 44 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 20->44 46 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 20->46 48 Tries to steal Mail credentials (via file / registry access) 20->48 50 Tries to harvest and steal browser information (history, passwords, etc) 20->50 signatures12
Score:
98%
Verdict:
Malware
File Type:
ASCII
Link:
https://malprob.io/report/9155355baf8df04eb80c98c785632b808e63e255d92fe05572f2e5dc29ca69bc
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/9155355baf8df04eb80c98c785632b808e63e255d92fe05572f2e5dc29ca69bc/
Threat name:
Script-WScript.Trojan.Guloader
Create hunting rule
Status:
Malicious
First seen:
2023-10-26 15:31:21 UTC
File Type:
Text (VBS)
AV detection:
10 of 36 (27.78%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=sfktkw5prxye5oamtddykyzlqchghysv3ex6avls6ls5ykokng6a._file
Verdict:
malicious
Similar samples:
28a46a9953f0b0771ec1bf9527cd35fbefd82119f2f7349faed0e5cbec61abc4
GuLoader
45fd23b26e7f3d4a79e28bc74ea5119a893de6cd4df0996184d960a2fe4c480c
GuLoader
6f1d937b47e5910b8d3ba50bd73c3f52ff06b02325892f09f43a51069657ad0b
GuLoader
73a362f5fb3b1512dd913f9f5fffe0e3968d10ee6e5c243bd76ecbc5cd20e45c
GuLoader
9aecf5734ff36e456fd5a50650b083c1d521d36212c0a440ec6202fc00d14380
GuLoader
b91e939e8c2270f7371f16b266f738659ff6f16cf1b2cf1c66147008e3e10a8c
GuLoader
fab88e2ebbe4f3ba70e7c08cbedde59af3b9da39ca50c0b252cb547f3dbddd0d
GuLoader
+ 862 additional samples on MalwareBazaar
Result
Malware family:
guloader
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla family:guloader downloader keylogger spyware stealer trojan
Link:
https://tria.ge/reports/231027-tf7yaahc39/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Legitimate hosting services abused for malware hosting/C2
Looks up external IP address via web service
Checks computer location settings
AgentTesla
Guloader,Cloudeye
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/9155355baf8d/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:Cerberus
Create hunting rule
Author:Jean-Philippe Teissier / @Jipe_
Description:Cerberus

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Cape
Cape
https://www.capesandbox.com/analysis/456754/

Comments