MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a9a61fc381ffd18cd3b1d58f7f0bde152bd2daa46bd928ab609c0073dbfe52dc. 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


Formbook


Vendor detections: 9


Intelligence 9 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a9a61fc381ffd18cd3b1d58f7f0bde152bd2daa46bd928ab609c0073dbfe52dc
SHA3-384 hash: bc10e855e83bf65025c81638f758137576fb66d5bc66d899b3be51a29899fcc0398617c815ddcebeb6f3e6c530bbaf82
SHA1 hash: 1226e8a9dda3b31c8bbe4ba0b9b59e65714e8b4d
MD5 hash: 7789d0af353fa0b925a7c84d8fce7dc1
humanhash: virginia-may-queen-ceiling
File name:Payment YK05-83642024..pdf.vbs
Download: download sample
Signature Formbook
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File size:1'698'242 bytes
First seen:2024-11-25 06:11:45 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 24576:2u59tNwr9wIo5dNnhOVrJBUZ2nSKtMUKaNke0PR4O2ygQi/OsPalBnM9vOh8ZE8l:6
TLSH T10B7576032E83231EEE5CC34625BC45649D59CAFF4EB1D0DCD1677DE16812C6E29EBAA0
Magika vba
Reporter abuse_ch
Tags:FormBook vbs

Intelligence

File Origin
# of uploads :
1
# of downloads :
104
Origin country :
NL NL
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Script.SNH-gen.21511.22286.UNOFFICIAL
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Verdict:
Clean
Score:
89.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6744153ad0583382434afd1e
Tags:
packed micro
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
masquerade
Link:
https://www.filescan.io/uploads/6744153a97ce90b13144ae44/reports/2ae66802-a4ed-4da1-8524-1f3880f36d0a/overview
Verdict:
Malicious
Labled as:
GT:VB.AgentTesla.4
Link:
https://www.hybrid-analysis.com/sample/a9a61fc381ffd18cd3b1d58f7f0bde152bd2daa46bd928ab609c0073dbfe52dc
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1562060
Signature
.NET source code contains very large strings
AI detected suspicious sample
Allocates memory in foreign processes
Antivirus detection for dropped file
Benign windows process drops PE files
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: WScript or CScript Dropper
Suspicious execution chain found
VBScript performs obfuscated calls to suspicious functions
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/a9a61fc381ffd18cd3b1d58f7f0bde152bd2daa46bd928ab609c0073dbfe52dc
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a9a61fc381ffd18cd3b1d58f7f0bde152bd2daa46bd928ab609c0073dbfe52dc/
Threat name:
Script-WScript.Trojan.AgentTesla
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Status:
Malicious
First seen:
2024-11-25 06:12:07 UTC
File Type:
Text (VBS)
AV detection:
7 of 38 (18.42%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=vgtb7q4b77iyzu5r2whx6c66cuv5fwvenpmsrk3atqahhw76kloa._file
Verdict:
malicious
Label(s):
formbook
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Similar samples:
error
Formbook
Result
Malware family:
n/a
Score:
  7/10
Tags:
discovery
Link:
https://tria.ge/reports/241125-gx7bvsymhn/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Executes dropped EXE
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a9a61fc381ff/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/a9a61fc381ffd18cd3b1d58f7f0bde152bd2daa46bd928ab609c0073dbfe52dc

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:detect_tiny_vbs
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Author:daniyyell
Description:Detects tiny VBS delivery technique

File information

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

Malspam

Formbook

Visual Basic Script (vbs) vbs a9a61fc381ffd18cd3b1d58f7f0bde152bd2daa46bd928ab609c0073dbfe52dc

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments