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
| 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: | |
| MIME type: | text/plain |
| ssdeep | 98304:TiCGVWydtn5PA2Vs1RJc4P+rm88GoSbzWiQiZBoz2yg1XMQT41E1dEKFqOOxQfNL:Ti1Wydt5TtRZh1Xn01AFqry/35JP0e2o |
| TLSH | T1F7F5833EDAF08E39359A1BDD7C63C1D487DFBB08C1848FC7755693999214BA5CEA02A0 |
| Magika | txt |
| Reporter | |
| Tags: | FormBook js |
Intelligence
File Origin
# of uploads :
1
# of downloads :
184
Origin country :
SEVendor 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
Verdict:
Suspicious
Labled as:
JS/TrojanDropper.ModiLoader
Verdict:
Malicious
File Type:
js
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:
Score:
98%
Verdict:
Malware
File Type:
SCRIPT
Verdict:
Malware
YARA:
1 match(es)
Tags:
DeObfuscated Javascript Obfuscated T1027 T1059.007
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
Formbook
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
Malware Family:
modiloader
Malicious:
True
Tags:
javascript
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
File information
The table below shows additional information about this malware sample such as delivery method and external references.
No further information available
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