MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 58b4786146d1aa9fcafc445a8d797220bae758dc49d49d9165d6fcb198a0e6a6. 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: 8


Intelligence 8 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 58b4786146d1aa9fcafc445a8d797220bae758dc49d49d9165d6fcb198a0e6a6
SHA3-384 hash: 55758bba58dd9971e976c44f6bad301c77ea0296542c3e4aa217aba012673a898c25e974b9ffeb359d1e929d173d38ad
SHA1 hash: 472a4b5f646b52789eb14913eeb4b8e250622287
MD5 hash: 01b468ca8a49d4d82866cea3dfb00faf
humanhash: grey-missouri-fix-massachusetts
File name:comprobante_transferencia_27-ago-2026_13_02_40.pdf.js
Download: download sample
Signature Formbook
Create hunting rule
File size:918'924 bytes
First seen:2026-08-27 19:06:38 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 24576:Lj7iPnJx5/vU1M0xhmi698nyEKQ5cYFYUcp1xgnL01baan:f7iPJU1M07698nyTYFdcKLAn
TLSH T1B115D06891F3D5306DDCCF845C558DCDAA08A3D9E66678620D0CD0B80658FBFA6FE878
Magika javascript
Reporter James_inthe_box
Tags:exe FormBook js

Intelligence

File Origin
# of uploads :
1
# of downloads :
187
Origin country :
US US
Vendor Threat Intelligence
No detections
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
downloader encrypted evasive masquerade obfuscated powershell powershell repaired
Link:
https://www.filescan.io/uploads/6a908ae16f2fa9978af3645f/reports/c7f1f07a-b1be-4558-b81f-dbe41180e336/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/58b4786146d1aa9fcafc445a8d797220bae758dc49d49d9165d6fcb198a0e6a6
Verdict:
Malicious
File Type:
js
First seen:
2026-08-27T13:17:00Z UTC
Last seen:
2026-08-29T12:24:00Z UTC
Hits:
~1000
Link:
https://opentip.kaspersky.com/58b4786146d1aa9fcafc445a8d797220bae758dc49d49d9165d6fcb198a0e6a6/results?tab=lookup
Score:
96%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/58b4786146d1aa9fcafc445a8d797220bae758dc49d49d9165d6fcb198a0e6a6
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/58b4786146d1aa9fcafc445a8d797220bae758dc49d49d9165d6fcb198a0e6a6/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2026-08-27 19:06:40 UTC
File Type:
Text (JavaScript)
AV detection:
7 of 24 (29.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=lc2hqykg2gvj7sx4irni26lsec5oowg4jhkj3elf236ldgfa42ta._file
Verdict:
malicious
Label(s):
Formbook
Create hunting rule
Link:
https://reports.threatray.com/14be2c5e-6141-4754-839c-e870928ab14c
Result
Malware family:
n/a
Score:
  7/10
Tags:
Execution discovery execution
Link:
https://tria.ge/reports/260827-xsqfjsah24/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Command and Scripting Interpreter: JavaScript
Enumerates physical storage devices
Executes a command shell one-liner
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Command and Scripting Interpreter: PowerShell
Checks computer location settings
Temporarily bypasses Powershell execution policy
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/58b4786146d1aa9fcafc445a8d797220bae758dc49d49d9165d6fcb198a0e6a6

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:Sus_CMD_Powershell_Usage
Create hunting rule
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)
Rule name:telebot_framework
Create hunting rule
Author:vietdx.mb

File information

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

Comments