🤲🏼 NEW | abuse.ch Community Hub! Earn recognition 🏅 for the malware intelligence you share, climb the leaderboards 📈, and connect with like-minded contributors who share your hunting focus 🤝. Ready to unlock your profile? Go to the Community Hub →

MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6a37ffed6331fc6ee2c62089afcd1ebbc2da8d650bb41c95b978bc8ab0da61af. 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
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 6a37ffed6331fc6ee2c62089afcd1ebbc2da8d650bb41c95b978bc8ab0da61af
SHA3-384 hash: a2f269ab48d423521b6fd4fb77b6b59680e08735cb5dd5cd04d466d00b2d157ae5681fd90fa627b6e5c47ae932db8335
SHA1 hash: 24275ea830edf2397f11ab879316c003f85f996e
MD5 hash: 39560a935de4c8a1aa9c55b5da66cee0
humanhash: mobile-florida-single-georgia
File name:Purchase Order #20013962.JS
Download: download sample
Signature Formbook
Create hunting rule
File size:3'730'785 bytes
First seen:2026-10-26 13:02:38 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:application/javascript
ssdeep 98304:4pA/84n27hJq7O0oSYFhCZfQDMIaKujVXuJmE1BIiAPxdAqKQ2W2w2EG//wWNtky:V//n27hJqi0xYFhUfQIIqBXCY6zQ2W2x
TLSH T18306E54623CB9472722FEB4CCA36E920991A610310C5DF39307D93577B76D1BAB5CAE2
Magika javascript
Reporter abuse_ch
Tags:FormBook js

Intelligence

File Origin
# of uploads :
1
# of downloads :
164
Origin country :
SE SE
Vendor Threat Intelligence
No detections
Detection(s):
SecuriteInfo.com.Other.Malware-gen.73998135.UNOFFICIAL
Create hunting rule

Verdict:
Clean
Score:
89.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6adf4fad5a22ac805bda5865
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/6adf4fafae26b08f65f90bca/reports/f0fe80ab-f852-4d94-a294-3bd294733198/overview
Verdict:
Malicious
Labled as:
JS/TrojanDropper.ModiLoader
Link:
https://www.hybrid-analysis.com/sample/6a37ffed6331fc6ee2c62089afcd1ebbc2da8d650bb41c95b978bc8ab0da61af
Verdict:
Malicious
File Type:
js
First seen:
2026-10-26T05:49:00Z UTC
Last seen:
2026-10-26T09:38:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/6a37ffed6331fc6ee2c62089afcd1ebbc2da8d650bb41c95b978bc8ab0da61af/results?tab=lookup
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1991959
Signature
Antivirus detection for URL or domain
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
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)
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: 1991959 Sample: Purchase Order #20013962.JS.js Startdate: 26/10/2026 Architecture: WINDOWS Score: 100 39 www.tomatox.com.tw 2->39 41 www.tbhsserv.net 2->41 43 7 other IPs or domains 2->43 67 Suricata IDS alerts for network traffic 2->67 69 Antivirus detection for URL or domain 2->69 71 Multi AV Scanner detection for submitted file 2->71 73 4 other signatures 2->73 8 wscript.exe 1 4 2->8         started        12 3Ce4TpiayvNr.exe 2->12 injected 14 uPoZjmww.exe 2->14 injected signatures3 process4 dnsIp5 35 C:\Users\user\...\BQZVPFXHEFPLIOGF.exe, PE32 8->35 dropped 37 C:\Users\user\Documents\FGOILPFEHXFPVZQB, ASCII 8->37 dropped 75 Benign windows process drops PE files 8->75 77 Drops PE files to the document folder of the user 8->77 79 Windows Scripting host queries suspicious COM object (likely to drop second stage) 8->79 81 WScript reads language and country specific registry keys (likely country aware script) 8->81 17 BQZVPFXHEFPLIOGF.exe 1 2 8->17         started        21 cmd.exe 1 8->21         started        83 Maps a DLL or memory area into another process 12->83 85 Found direct / indirect Syscall (likely to bypass EDR) 12->85 23 wextract.exe 13 12->23         started        45 www.91mitao167.cc 23.224.44.164, 49753, 49754, 49755 CNSERVERS-CNSERVERSLLCUS United States 14->45 47 www.tomatox.com.tw 104.21.59.130, 49761, 49762, 49763 CLOUDFLARENET-CloudflareIncUS Canada 14->47 49 5 other IPs or domains 14->49 file6 signatures7 process8 file9 31 C:\Users\user\...\FGOILPFEHXFPVZQB.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 Purchase Order #20....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/6a37ffed6331fc6ee2c62089afcd1ebbc2da8d650bb41c95b978bc8ab0da61af
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/39560a935de4c8a1aa9c55b5da66cee0
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/6a37ffed6331fc6ee2c62089afcd1ebbc2da8d650bb41c95b978bc8ab0da61af/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2026-10-26 13:02:59 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=ni3773ldgh6g5ywgece27ti6xpbnvdlfbo2bzfnzpc6ivmg2mgxq._file
Verdict:
malicious
Label(s):
Formbook
Create hunting rule
Link:
https://reports.threatray.com/b27e9dad-fee8-48b6-9b27-0c26bff6200e
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook defense_evasion execution persistence privilege_escalation rat spyware stealer trojan
Link:
https://tria.ge/reports/261026-qam45sbb49/
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:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/6a37ffed6331fc6ee2c62089afcd1ebbc2da8d650bb41c95b978bc8ab0da61af

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
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DebuggerCheck__GlobalFlags
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Active
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:dgaagas
Create hunting rule
Author:Harshit
Description:Uses certutil.exe to download a file named test.txt
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:MULTI_Malware_AgentTesla_ForgeAuto_ed343f78_Extrait
Create hunting rule
Author:Marjoriefort
Description:Detects AgentTesla (inconnu, etat extrait)
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:TH_Win_ETW_Bypass_2025_CYFARE
Create hunting rule
Author:CYFARE
Description:Windows ETW Bypass Detection Rule - 2025
Reference:https://cyfare.net/
Rule name:WIN_Malware_SalatStealer_ForgeAuto_542e717b
Create hunting rule
Author:Marjoriefort
Description:Detects SalatStealer (pe, etat binaire)
Rule name:WIN_Malware_Sliver_ForgeAuto_2ddb463c
Create hunting rule
Author:Marjoriefort
Description:Detects Sliver (pe, etat binaire)
Rule name:WIN_Malware_Unknown_ForgeAuto_2ffc3572
Create hunting rule
Author:Marjoriefort
Description:Detects Unknown (pe, etat binaire)
Rule name:WIN_Malware_Unknown_ForgeAuto_5001c94c
Create hunting rule
Author:Marjoriefort
Description:Detects Unknown (pe, etat binaire)
Rule name:WIN_Malware_Unknown_ForgeAuto_ce8c5b46
Create hunting rule
Author:Marjoriefort
Description:Detects Unknown (pe, etat binaire)
Rule name:WIN_Malware_ValleyRAT_ForgeAuto_401c5e16
Create hunting rule
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