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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a8abca77ea1765dfd35193bb61d491ba15c0cf8fa63897d5af098d9c0806cecb. 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: 15


Intelligence 15 IOCs YARA File information Comments

SHA256 hash: a8abca77ea1765dfd35193bb61d491ba15c0cf8fa63897d5af098d9c0806cecb
SHA3-384 hash: 31536db481cfa3c73a4a2df69cdec7842cf1e867dae250c3c8338fccefdb477d87971385c04992ccc569cb303c1ef07d
SHA1 hash: 807036a647260a059ba8e11976d213b896acef0a
MD5 hash: 47727081ad5d08fb1a216f74ff237ba0
humanhash: wolfram-don-floor-romeo
File name:Dubai Quotation Approval..pdf.js
Download: download sample
Signature Formbook
File size:3'448'309 bytes
First seen:2026-11-11 14:12:50 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 98304:TiCGVWydtn5PA2Vs1RJc4P+rm88GoSbzWiQiZBoz2yg1XMQT41E1dEKFqOOxQfNL:Ti1Wydt5TtRZh1Xn01AFqry/35JP0e2o
TLSH T1F7F5833EDAF08E39359A1BDD7C63C1D487DFBB08C1848FC7755693999214BA5CEA02A0
Magika txt
Reporter abuse_ch
Tags:FormBook js

Intelligence


File Origin
# of uploads :
1
# of downloads :
184
Origin country :
SE SE
Vendor Threat Intelligence
No detections
Verdict:
Malicious
Score:
94.9%
Tags:
autoit emotet proxy java
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file
Sending a custom TCP request
Creating synchronization primitives
Deleting a recently created file
Creating a process with a hidden window
Launching a process
Launching a service
Creating a process from a recently created file
Enabling autorun
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-debug autoit dropper evasive expired-cert fingerprint keylogger lolbin masquerade obfuscated packed reconnaissance repaired wscript
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.evad.spyw
Score:
100 / 100
Signature
Allocates memory in foreign processes
Creates an undocumented autostart registry key
Found direct / indirect Syscall (likely to bypass EDR)
Injects a PE file into a foreign processes
JavaScript file contains suspicious strings
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: Suspicious Parent Double Extension File Execution
Sigma detected: WScript or CScript Dropper
Sigma detected: WScript or CScript Dropper - File
Switches to a custom stack to bypass stack traces
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)
Writes to foreign memory regions
WScript reads language and country specific registry keys (likely country aware script)
Yara detected FormBook
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 2004136 Sample: Dubai Quotation Approval..pdf.js Startdate: 11/11/2026 Architecture: WINDOWS Score: 100 28 Multi AV Scanner detection for submitted file 2->28 30 Yara detected FormBook 2->30 32 JavaScript source code contains functionality to generate code involving a shell, file or stream 2->32 34 4 other signatures 2->34 7 wscript.exe 8 17 2->7         started        10 6uvWUoRed.exe 2->10 injected process3 signatures4 36 Creates an undocumented autostart registry key 7->36 38 Windows Scripting host queries suspicious COM object (likely to drop second stage) 7->38 40 WScript reads language and country specific registry keys (likely country aware script) 7->40 12 HJFFRYRMCXLMYRY.exe 7->12         started        42 Maps a DLL or memory area into another process 10->42 44 Found direct / indirect Syscall (likely to bypass EDR) 10->44 15 EhStorAuthn.exe 10->15         started        process5 signatures6 46 Uses ping.exe to check the status of other devices and networks 12->46 48 Writes to foreign memory regions 12->48 50 Allocates memory in foreign processes 12->50 52 Injects a PE file into a foreign processes 12->52 17 PING.EXE 12->17         started        54 Maps a DLL or memory area into another process 15->54 56 Unusual module load detection (module proxying) 15->56 process7 signatures8 20 Modifies the context of a thread in another process (thread injection) 17->20 22 Maps a DLL or memory area into another process 17->22 24 Queues an APC in another process (thread injection) 17->24 26 2 other signatures 17->26
Verdict:
Malware
YARA:
1 match(es)
Tags:
DeObfuscated Javascript Obfuscated T1027 T1059.007
Result
Malware family:
formbook
Score:
  10/10
Tags:
family:formbook discovery execution persistence ransomware rat spyware stealer trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Uses Volume Shadow Copy WMI provider
Uses Volume Shadow Copy service COM API
Command and Scripting Interpreter: JavaScript
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Registers new Windows logon scripts automatically executed at logon.
Family: Formbook
Formbook payload
Please note that we are no longer able to provide a coverage score for Virus Total.

File information


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

Comments