MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4371260390a2c516473f5b33c19b01b86256b7bdd2c318d4b55d2bbef70af1e4. 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: 10


Intelligence 10 IOCs YARA 17 File information Comments
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SHA256 hash: 4371260390a2c516473f5b33c19b01b86256b7bdd2c318d4b55d2bbef70af1e4
SHA3-384 hash: 586d1cda0fc4ed0baeeb5aecbb8ae5e1f54beaa41d75c079fdce6708f57655d9918dff3868c6ce24f8bf9ea641563afc
SHA1 hash: 3051b45ca8e38960d4221f0cae35d22c3301caec
MD5 hash: 0ba3ce972e41cfa1472519baedc8617b
humanhash: winner-whiskey-twenty-muppet
File name:Whatssap Image.jpg 11-8-26.js
Download: download sample
Signature Formbook
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File size:5'224'952 bytes
First seen:2026-08-11 08:54:56 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 12288:h3IKg6D9H3zZT+upQh00CAZCmldv/1ri24PJyI/pyv5ASPwtp+O9iwlB3ox2V0Ta:tdEFt2
TLSH T14A36AB1293F82218F6F7CF59697A20658AFABE166C39D13C21B4104D08F2E81DD75B7B
TrID 66.6% (.TXT) Text - UTF-16 (LE) encoded (2000/1)
33.3% (.MP3) MP3 audio (1000/1)
Magika autohotkey
Reporter abuse_ch
Tags:FormBook js

Intelligence

File Origin
# of uploads :
1
# of downloads :
143
Origin country :
SE SE
Vendor Threat Intelligence
No detections
Detection(s):
SecuriteInfo.com.JS.Trojan.Cryxos.16604.3764.6023.UNOFFICIAL
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Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm evasive fingerprint lolbin powershell repaired squirrel
Link:
https://www.filescan.io/uploads/6a7ae393f9db45e14152fc49/reports/29e168dd-ce29-42a6-b591-c842f2c5c526/overview
Verdict:
Malicious
Labled as:
Trojan.Cryxos.JS
Link:
https://www.hybrid-analysis.com/sample/4371260390a2c516473f5b33c19b01b86256b7bdd2c318d4b55d2bbef70af1e4
Verdict:
Malicious
File Type:
js
First seen:
2026-08-10T21:40:00Z UTC
Last seen:
2026-08-13T07:38:00Z UTC
Hits:
~10000
Link:
https://opentip.kaspersky.com/4371260390a2c516473f5b33c19b01b86256b7bdd2c318d4b55d2bbef70af1e4/results?tab=lookup
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1955813
Signature
Antivirus detection for URL or domain
Creates processes via WMI
Found direct / indirect Syscall (likely to bypass EDR)
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for submitted file
Obfuscated command line found
Queues an APC in another process (thread injection)
Sigma detected: Cscript/Wscript Uncommon Script Extension Execution
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Suspicious execution chain found
Switches to a custom stack to bypass stack traces
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Unusual module load detection (module proxying)
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
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1955813 Sample: Whatssap Image.jpg 11-8-26.js Startdate: 11/08/2026 Architecture: WINDOWS Score: 100 34 www.xston.site 2->34 36 www.lmarguerite.one 2->36 38 11 other IPs or domains 2->38 56 Suricata IDS alerts for network traffic 2->56 58 Antivirus detection for URL or domain 2->58 60 Multi AV Scanner detection for submitted file 2->60 62 4 other signatures 2->62 11 wscript.exe 1 1 2->11         started        signatures3 process4 signatures5 76 Wscript starts Powershell (via cmd or directly) 11->76 78 Obfuscated command line found 11->78 80 Windows Scripting host queries suspicious COM object (likely to drop second stage) 11->80 82 2 other signatures 11->82 14 powershell.exe 14 15 11->14         started        process6 dnsIp7 46 hjha.ao 94.46.180.118, 443, 49721 ALMOUROLTECPT Portugal 14->46 84 Writes to foreign memory regions 14->84 86 Injects a PE file into a foreign processes 14->86 18 MSBuild.exe 14->18         started        21 conhost.exe 14->21         started        signatures8 process9 signatures10 48 Modifies the context of a thread in another process (thread injection) 18->48 50 Maps a DLL or memory area into another process 18->50 52 Queues an APC in another process (thread injection) 18->52 54 3 other signatures 18->54 23 N0z9harYWEF3.exe 18->23 injected process11 signatures12 64 Maps a DLL or memory area into another process 23->64 66 Found direct / indirect Syscall (likely to bypass EDR) 23->66 26 winrs.exe 13 23->26         started        process13 signatures14 68 Tries to steal Mail credentials (via file / registry access) 26->68 70 Tries to harvest and steal browser information (history, passwords, etc) 26->70 72 Modifies the context of a thread in another process (thread injection) 26->72 74 3 other signatures 26->74 29 hpHWMjIYRGyq.exe 26->29 injected 32 firefox.exe 26->32         started        process15 dnsIp16 40 www.lmarguerite.one 46.30.211.38, 49724, 49725, 49726 ONECOMDK Denmark 29->40 42 www.xston.site 104.207.65.180, 49740, 49741, 49742 NAMECHEAP-NET-NamecheapIncUS United States 29->42 44 5 other IPs or domains 29->44
Score:
98%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/4371260390a2c516473f5b33c19b01b86256b7bdd2c318d4b55d2bbef70af1e4
Verdict:
inconclusive
YARA:
2 match(es)
Link:
https://app.malva.re/file/0ba3ce972e41cfa1472519baedc8617b
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4371260390a2c516473f5b33c19b01b86256b7bdd2c318d4b55d2bbef70af1e4/
Threat name:
Text.Trojan.Generic
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Status:
Suspicious
First seen:
2026-08-11 03:23:41 UTC
File Type:
Text
AV detection:
4 of 24 (16.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=inysma4qulcrmrz7lmz4dgybxbrfnn552lbrrvfvluv355yk6hsa._file
Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook execution rat spyware stealer trojan
Link:
https://tria.ge/reports/260811-kwcbwabk8w/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Command and Scripting Interpreter: JavaScript
Suspicious use of SetThreadContext
Badlisted process makes network request
Downloads MZ/PE file
Family: Formbook
Formbook payload
Process spawned unexpected child process
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.55
Link:
https://yomi.yoroi.company/submissions/4371260390a2c516473f5b33c19b01b86256b7bdd2c318d4b55d2bbef70af1e4

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:Borland
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Author:malware-lu
Rule name:CP_Script_Inject_Detector
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Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DebuggerCheck__GlobalFlags
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Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
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Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Active
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Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
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Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DetectEncryptedVariants
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Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:dgaagas
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Author:Harshit
Description:Uses certutil.exe to download a file named test.txt
Rule name:golang_bin_JCorn_CSC846
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Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:MD5_Constants
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Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:pe_no_import_table
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Description:Detect pe file that no import table
Rule name:RIPEMD160_Constants
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Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
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Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
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Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:shellcode
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Author:nex
Description:Matched shellcode byte patterns
Rule name:telebot_framework
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Author:vietdx.mb
Rule name:TH_Win_ETW_Bypass_2025_CYFARE
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Author:CYFARE
Description:Windows ETW Bypass Detection Rule - 2025
Reference:https://cyfare.net/

File information

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

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