MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f441732f93fc49899a4978e0bba71bab7cbe3a105394ec1248a55041e204d55a. 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: 5

Intelligence 5 IOCs YARA 19 File information Comments

SHA256 hash:	f441732f93fc49899a4978e0bba71bab7cbe3a105394ec1248a55041e204d55a
SHA3-384 hash:	5398d772e1cb0d5813268b7e2113a8f20c19d110f25a967db56f51a865d4c61073b2c0bd5d5374019138e1f7b9a992ce
SHA1 hash:	50496586fceaf49b875888d9c5cc711d6dc2c6bd
MD5 hash:	cf2d5c0dae9b027064e70cb276cef630
humanhash:	fish-uniform-speaker-muppet
File name:	Receipt Copy001pdf.r00
Download:	download sample
Signature	Formbook Create hunting rule
File size:	580'419 bytes
First seen:	2025-01-28 13:28:18 UTC
Last seen:	Never
File type:	r00
MIME type:	application/x-rar
ssdeep	12288:0HkfHhJO+pG2OZ/T5QZvtQ9wVxUE2gf5ZQzbrogqWtLYk:ckfUem9wVSlgBWzfogqWtLYk
TLSH	T129C423B6FA23CDD9C0DC66D4121A8694CF7F69AC80909B61DCA9CF5CA6884385DF074F
TrID	61.5% (.RAR) RAR compressed archive (v5.0) (8000/1) 38.4% (.RAR) RAR compressed archive (gen) (5000/1)
Magika	rar
Reporter	cocaman
Tags:	FormBook payment r00

cocaman

Malicious email (T1566.001)
From: "afjal@southeastbank.com.bd" (likely spoofed)
Received: "from [195.211.191.218] (unknown [195.211.191.218]) "
Date: "28 Jan 2025 05:26:50 -0800"
Subject: "RE: Payment Receipt Copy 001"
Attachment: "Receipt Copy001pdf.r00"

Intelligence

File Origin

# of uploads :

# of downloads :

133

Origin country :

File Archive Information

This file archive contains 1 file(s), sorted by their relevance:

File name:	Receipt Copy001.exe
File size:	666'624 bytes
SHA256 hash:	467d77d35a6fc815ecbd60b0b320d7ca06e0f8a340c2c3285de4c0430517f8e7
MD5 hash:	9ecbdf4d5174c3da835a2a7829e06773
MIME type:	application/x-dosexec
Signature	Formbook

Vendor Threat Intelligence

Verdict:

Malicious

Score:

96.5%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6798de0729ae628cf42a63b5

Tags:

shell msil sage

Gathering data

Verdict:

Unknown

Link:

https://www.hybrid-analysis.com/sample/f441732f93fc49899a4978e0bba71bab7cbe3a105394ec1248a55041e204d55a

Result

Verdict:

MALICIOUS

Details

Windows PE Executable

Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/f441732f93fc49899a4978e0bba71bab7cbe3a105394ec1248a55041e204d55a/

Threat name:

ByteCode-MSIL.Backdoor.FormBook

Status:

Malicious

First seen:

2025-01-28 08:52:43 UTC

File Type:

Binary (Archive)

Extracted files:

AV detection:

16 of 38 (42.11%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=6raxgl4t7reytgsjpdqlxjy3vn6l4oqqkokoyesiuviedyqe2vna._file

Please note that we are no longer able to provide a coverage score for Virus Total.

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:	AgentTesla_DIFF_Common_Strings_01 Create hunting rule
Author:	schmidtsz
Description:	Identify partial Agent Tesla strings

Rule name:	cobalt_strike_tmp01925d3f Create hunting rule
Author:	The DFIR Report
Description:	files - file ~tmp01925d3f.exe
Reference:	https://thedfirreport.com

Rule name:	DebuggerCheck__API Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

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:	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:	NET Create hunting rule
Author:	malware-lu

Rule name:	pe_detect_tls_callbacks Create hunting rule

Rule name:	pe_imphash Create hunting rule

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:	Skystars_Malware_Imphash Create hunting rule
Author:	Skystars LightDefender
Description:	imphash

Rule name:	Sus_Obf_Enc_Spoof_Hide_PE Create hunting rule
Author:	XiAnzheng
Description:	Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)