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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6c4f91d6dd39c0b02a985921bcb5fc01eed4fee075044d9b1fd7d9bcf2687d8a. 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: 12


Intelligence 12 IOCs YARA 22 File information Comments
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SHA256 hash: 6c4f91d6dd39c0b02a985921bcb5fc01eed4fee075044d9b1fd7d9bcf2687d8a
SHA3-384 hash: 2b86f30578bd3f48d75e9472ab0777066654e8bbbc27d9acc7b17735a3862ebb5021f6e3d2ee14d721c351796f1edb11
SHA1 hash: 5f3edc1e25238f004a5ed9d3108bdd18494b018e
MD5 hash: 03981578aa4f58bb2486e9b2a46f8798
humanhash: virginia-emma-march-saturn
File name:Order-C61400 or C46400.JS
Download: download sample
Signature Formbook
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File size:3'734'417 bytes
First seen:2026-10-26 07:43:26 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:application/javascript
ssdeep 98304:LhfxxEOefJ/RNauXuZAxP2yay2lfNNOFN2ON9H7CixMooy8Rg/NzBxlNolEN/8ah:KTEfQhrH+ixMot8aBTlNZaOK2
TLSH T154065BA200E767A6B66FC61DC51A6B850A39601F2630AD3D3BB91BCF2777B077D8C051
Magika javascript
Reporter abuse_ch
Tags:FormBook js

Intelligence

File Origin
# of uploads :
1
# of downloads :
158
Origin country :
SE SE
Vendor Threat Intelligence
No detections
Detection(s):
SecuriteInfo.com.Trojan.JS.Agent.21129.6923.UNOFFICIAL
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Verdict:
Clean
Score:
89.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6adf04df5a22ac805bda5456
Tags:
n/a
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-debug dropper evasive masquerade obfuscated obfuscated packed repaired
Link:
https://www.filescan.io/uploads/6adf04d7d82c0c615cfae9e1/reports/7558c873-3e12-4424-8aa5-be1e5817a876/overview
Verdict:
Malicious
Labled as:
JS/TrojanDropper.ModiLoader
Link:
https://www.hybrid-analysis.com/sample/6c4f91d6dd39c0b02a985921bcb5fc01eed4fee075044d9b1fd7d9bcf2687d8a
Verdict:
Malicious
File Type:
js
First seen:
2026-10-25T20:38:00Z UTC
Last seen:
2026-10-28T05:16:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/6c4f91d6dd39c0b02a985921bcb5fc01eed4fee075044d9b1fd7d9bcf2687d8a/results?tab=lookup
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1991824
Signature
Benign windows process drops PE files
Creates autostart registry keys with suspicious values (likely registry only malware)
Drops PE files to the document folder of the user
Found API chain indicative of debugger detection
Found direct / indirect Syscall (likely to bypass EDR)
JavaScript source code contains functionality to generate code involving a shell, file or stream
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
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
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)
Uses ping.exe to check the status of other devices and networks
Windows Scripting host queries suspicious COM object (likely to drop second stage)
WScript reads language and country specific registry keys (likely country aware script)
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1991824 Sample: Order-C61400 or C46400.JS.js Startdate: 26/10/2026 Architecture: WINDOWS Score: 100 39 www.fuqmig.xyz 2->39 41 www.studyviz.com 2->41 43 8 other IPs or domains 2->43 67 Suricata IDS alerts for network traffic 2->67 69 Multi AV Scanner detection for submitted file 2->69 71 Yara detected FormBook 2->71 75 4 other signatures 2->75 8 wscript.exe 1 4 2->8         started        12 vu0Pk0uydAfSOt.exe 2->12 injected 14 SVwTuFHdywoDSs.exe 2->14 injected signatures3 73 Performs DNS queries to domains with low reputation 39->73 process4 dnsIp5 35 C:\Users\user\...\WQCEFAPPKXEKIVNG.exe, PE32 8->35 dropped 37 C:\Users\user\DocumentsbehaviorgraphNVIKEXKPPAFECQW, ASCII 8->37 dropped 77 Benign windows process drops PE files 8->77 79 Drops PE files to the document folder of the user 8->79 81 Windows Scripting host queries suspicious COM object (likely to drop second stage) 8->81 83 WScript reads language and country specific registry keys (likely country aware script) 8->83 17 WQCEFAPPKXEKIVNG.exe 1 2 8->17         started        21 cmd.exe 1 8->21         started        85 Maps a DLL or memory area into another process 12->85 87 Found direct / indirect Syscall (likely to bypass EDR) 12->87 23 PING.EXE 13 12->23         started        45 www.garidge.ie 185.195.12.99, 49727, 49728, 49729 ORACLE-BMC-31898-OracleCorporationUS United Kingdom 14->45 47 www.fuqmig.xyz 203.161.58.88, 49731, 49732, 49733 NAMECHEAP-NET-NamecheapIncUS United States 14->47 49 4 other IPs or domains 14->49 file6 signatures7 process8 file9 31 C:\Users\user\...behaviorgraphNVIKEXKPPAFECQW.vbs, ASCII 17->31 dropped 51 Creates autostart registry keys with suspicious values (likely registry only malware) 17->51 53 Found API chain indicative of debugger detection 17->53 55 Modifies the context of a thread in another process (thread injection) 17->55 65 3 other signatures 17->65 25 conhost.exe 17->25         started        33 Order-C61400 or C4....js:Zone.Identifier, ASCII 21->33 dropped 27 conhost.exe 21->27         started        57 Tries to steal Mail credentials (via file / registry access) 23->57 59 Tries to harvest and steal browser information (history, passwords, etc) 23->59 61 Maps a DLL or memory area into another process 23->61 63 Unusual module load detection (module proxying) 23->63 29 firefox.exe 23->29         started        signatures10 process11
Score:
97%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/6c4f91d6dd39c0b02a985921bcb5fc01eed4fee075044d9b1fd7d9bcf2687d8a
Verdict:
Malware
YARA:
1 match(es)
Tags:
Batch Command DeObfuscated Javascript JS Emulation Trace PowerShell PowerShell Call Scripting.FileSystemObject T1027 T1059.001 T1059.007 WScript.Shell
Link:
https://app.malva.re/file/03981578aa4f58bb2486e9b2a46f8798
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/6c4f91d6dd39c0b02a985921bcb5fc01eed4fee075044d9b1fd7d9bcf2687d8a/
Threat name:
Script-JS.Trojan.Heuristic
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Status:
Malicious
First seen:
2026-10-26 03:44:52 UTC
File Type:
Text (JavaScript)
AV detection:
10 of 24 (41.67%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=nrhzdvw5hhalakuyleq3znp4ahxnj7xaouce3gy727m3z4tipwfa._file
Verdict:
malicious
Label(s):
Formbook
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Link:
https://reports.threatray.com/8af7b7e1-b849-4c1b-9363-0a88ed40ecc2
Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook defense_evasion execution persistence privilege_escalation rat spyware stealer trojan
Link:
https://tria.ge/reports/261026-jk2xqavyg1/
Behaviour
Modifies registry class
NTFS ADS
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Command and Scripting Interpreter: JavaScript
Enumerates physical storage devices
Executes a command shell one-liner
Executes a VBScript file via the Windows Script Host.
Adds Run key to start application
Checks computer location settings
Executes dropped EXE
Family: Formbook
Formbook payload
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/6c4f91d6dd39c0b02a985921bcb5fc01eed4fee075044d9b1fd7d9bcf2687d8a

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_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:MULTI_Malware_AgentTesla_ForgeAuto_ed343f78_Extrait
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Author:Marjoriefort
Description:Detects AgentTesla (inconnu, etat extrait)
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:TH_Win_ETW_Bypass_2025_CYFARE
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Author:CYFARE
Description:Windows ETW Bypass Detection Rule - 2025
Reference:https://cyfare.net/
Rule name:WIN_Malware_SalatStealer_ForgeAuto_542e717b
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Author:Marjoriefort
Description:Detects SalatStealer (pe, etat binaire)
Rule name:WIN_Malware_Sliver_ForgeAuto_2ddb463c
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Author:Marjoriefort
Description:Detects Sliver (pe, etat binaire)
Rule name:WIN_Malware_Unknown_ForgeAuto_2ffc3572
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Author:Marjoriefort
Description:Detects Unknown (pe, etat binaire)
Rule name:WIN_Malware_Unknown_ForgeAuto_5001c94c
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Author:Marjoriefort
Description:Detects Unknown (pe, etat binaire)
Rule name:WIN_Malware_Unknown_ForgeAuto_ce8c5b46
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Author:Marjoriefort
Description:Detects Unknown (pe, etat binaire)
Rule name:WIN_Malware_ValleyRAT_ForgeAuto_401c5e16
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Author:Marjoriefort
Description:Detects ValleyRAT (pe, etat binaire)

File information

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

Comments