MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b8c85906adbd9dd9c8ef76bb684aae5c6a087d05865211a4df7c7a91ff071804. 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: 11


Intelligence 11 IOCs YARA 2 File information Comments
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SHA256 hash: b8c85906adbd9dd9c8ef76bb684aae5c6a087d05865211a4df7c7a91ff071804
SHA3-384 hash: 4ef50d71af490dd851a29eac51e046ac909e4dbac42e5b193382d46075cf2d75808fe19a5ec7351e6b981e7d10bc8a90
SHA1 hash: 2efee71d6fcf19f61159b73f1853bf0312ec3058
MD5 hash: 402f2ac752fbf300f6562aa0f97db51f
humanhash: lithium-edward-lithium-paris
File name:év végi költségvetés.js
Download: download sample
Signature Formbook
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File size:17'713 bytes
First seen:2025-09-23 20:47:31 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 384:Yzhzpkqm+5PQzm1CmCf4dOvEvIzLrBMgBT:YzhzpkZ+5PQzWXG4dOvEvIrV
TLSH T1E082F8C48C83FCB5645A37866CC9CA31CFF909667621C475798FD7142204664DF29AE7
Magika javascript
Reporter smica83
Tags:FormBook GuLoader HUN js

Intelligence

File Origin
# of uploads :
1
# of downloads :
110
Origin country :
HU HU
Vendor Threat Intelligence
Detection(s):
Sanesecurity.Malware.26863.JsHeur.UNOFFICIAL
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Verdict:
Suspicious
Score:
50%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68d307a51c026c0646f7391c
Tags:
stration spawn
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
fingerprint
Link:
https://www.filescan.io/uploads/68d307664cfd312e5634bfbe/reports/2e3e6c7a-5167-41a3-b684-94f7ec05321d/overview
Verdict:
Malicious
Labled as:
VBS/Agent.TKB trojan
Link:
https://www.hybrid-analysis.com/sample/b8c85906adbd9dd9c8ef76bb684aae5c6a087d05865211a4df7c7a91ff071804
Verdict:
Malicious
File Type:
js
First seen:
2025-09-22T16:14:00Z UTC
Last seen:
2025-09-22T16:14:00Z UTC
Hits:
~1000
Detections:
Trojan.PowerShell.Strion.sb Trojan.JS.SAgent.sb HEUR:Trojan.Script.Generic HEUR:Trojan.Script.SAgent.gen
Link:
https://opentip.kaspersky.com/b8c85906adbd9dd9c8ef76bb684aae5c6a087d05865211a4df7c7a91ff071804/results?tab=lookup
Result
Threat name:
FormBook, GuLoader
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Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1782895
Signature
Creates processes via WMI
Early bird code injection technique detected
Found suspicious powershell code related to unpacking or dynamic code loading
JavaScript source code contains functionality to generate code involving a shell, file or stream
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sigma detected: WScript or CScript Dropper
Suspicious execution chain 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 FormBook
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1782895 Sample: #U00e9v v#U00e9gi k#U00f6lt... Startdate: 23/09/2025 Architecture: WINDOWS Score: 100 38 www.hj2407ya17.top 2->38 40 drive.usercontent.google.com 2->40 42 drive.google.com 2->42 48 Malicious sample detected (through community Yara rule) 2->48 50 Multi AV Scanner detection for submitted file 2->50 52 Yara detected FormBook 2->52 54 3 other signatures 2->54 10 powershell.exe 18 2->10         started        13 wscript.exe 1 1 2->13         started        signatures3 process4 signatures5 58 Early bird code injection technique detected 10->58 60 Writes to foreign memory regions 10->60 62 Found suspicious powershell code related to unpacking or dynamic code loading 10->62 64 Queues an APC in another process (thread injection) 10->64 15 msiexec.exe 6 10->15         started        18 conhost.exe 10->18         started        20 msiexec.exe 10->20         started        66 Wscript starts Powershell (via cmd or directly) 13->66 68 Windows Scripting host queries suspicious COM object (likely to drop second stage) 13->68 70 Suspicious execution chain found 13->70 72 Creates processes via WMI 13->72 22 powershell.exe 14 18 13->22         started        process6 dnsIp7 76 Maps a DLL or memory area into another process 15->76 25 BNUDK2eN1p6Wm5.exe 15->25 injected 44 drive.usercontent.google.com 142.251.215.225, 443, 49716, 49725 GOOGLEUS United States 22->44 46 drive.google.com 142.251.33.78, 443, 49715, 49724 GOOGLEUS United States 22->46 78 Found suspicious powershell code related to unpacking or dynamic code loading 22->78 28 conhost.exe 22->28         started        signatures8 process9 signatures10 56 Maps a DLL or memory area into another process 25->56 30 chkntfs.exe 25->30         started        process11 signatures12 74 Maps a DLL or memory area into another process 30->74 33 ofFYfnTrwaSqdZ.exe 30->33 injected process13 dnsIp14 36 www.hj2407ya17.top 35.227.193.9, 49726, 80 GOOGLEUS United States 33->36
Score:
99%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/b8c85906adbd9dd9c8ef76bb684aae5c6a087d05865211a4df7c7a91ff071804
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b8c85906adbd9dd9c8ef76bb684aae5c6a087d05865211a4df7c7a91ff071804/
Verdict:
Malicious
Threat:
Family.FORMBOOK
Link:
https://tip.neiki.dev/file/b8c85906adbd9dd9c8ef76bb684aae5c6a087d05865211a4df7c7a91ff071804
Threat name:
Script-JS.Trojan.GuLoader
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Status:
Malicious
First seen:
2025-09-22 22:59:04 UTC
File Type:
Text (JavaScript)
AV detection:
9 of 24 (37.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xdefsbvnxwo5tshpo25wqsvolrvaq7ifqzjbdjg7pr5jd7yhdaca._file
Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/250923-zk575sfj2s/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Command and Scripting Interpreter: JavaScript
System Location Discovery: System Language Discovery
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Legitimate hosting services abused for malware hosting/C2
Badlisted process makes network request
Formbook payload
Formbook
Formbook family
Process spawned unexpected child process
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/b8c85906adbd9dd9c8ef76bb684aae5c6a087d05865211a4df7c7a91ff071804

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:CP_AllMal_Detector
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Author:DiegoAnalytics
Description:CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication
Rule name:Sus_CMD_Powershell_Usage
Create hunting rule
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)

File information

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

Comments