MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a21f7c25987cbe8aad5aaacf834ff3e38bfbd1fa43645ce3bec1eab0f0c3b7a4. 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: 6

Intelligence 6 IOCs YARA 16 File information Comments

SHA256 hash:	a21f7c25987cbe8aad5aaacf834ff3e38bfbd1fa43645ce3bec1eab0f0c3b7a4
SHA3-384 hash:	e13ad0812c1d5b60240c82b472d357dae9cc35123ad159fc6996186ce30978eb191a5c7aedc8ccd66d24ae10c4037ce9
SHA1 hash:	0807c919b6c504b0b4efba3917c6ce4aca7f4072
MD5 hash:	a846136d88f713e43614e432781a4427
humanhash:	don-foxtrot-seventeen-angel
File name:	INDENT 1401-1-1146- U008.tbz
Download:	download sample
Signature	Formbook Create hunting rule
File size:	684'518 bytes
First seen:	2025-02-05 08:25:48 UTC
Last seen:	2025-02-05 08:31:43 UTC
File type:	rar
MIME type:	application/x-rar
ssdeep	12288:E9SQdj0I/ro9wR0ANdpwNX7u3JzdOihiXaSS4w4ZMhXzdiieUTJT77VA8C:aSUwS09oBd+gWbXIYZMhXzdiiJJT6x
TLSH	T1A1E42371A5F38A9D25ABB8AF8462144BD4F18C1C0EB60533AA4FD35FB8C2565DB24337
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 rar tbz

cocaman

Malicious email (T1566.001)
From: "m.estiri <andi@greyradian.com>" (likely spoofed)
Received: "from sharp.greyradian.com (sharp.greyradian.com [194.169.172.224]) "
Date: "05 Feb 2025 07:30:43 +0200"
Subject: "INDENT 1401-1-1146- U008"
Attachment: "INDENT 1401-1-1146- U008.tbz"

Intelligence

File Origin

# of uploads :

# of downloads :

104

Origin country :

File Archive Information

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

File name:	INDENT 1401-1-1146- U008.exe
File size:	1'185'792 bytes
SHA256 hash:	fee05a6bc4233e8fba7f346a710bcbc8b3e019149feb15b395b6d8db7819e9f7
MD5 hash:	0c33ea254f4f18e7d0d84132e9f52431
MIME type:	application/x-dosexec
Signature	Formbook

Vendor Threat Intelligence

Verdict:

Malicious

Score:

99.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=67a322a52dcee78dd81978e8

Tags:

autorun autoit emotet

Gathering data

Verdict:

Unknown

Link:

https://www.hybrid-analysis.com/sample/a21f7c25987cbe8aad5aaacf834ff3e38bfbd1fa43645ce3bec1eab0f0c3b7a4

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/a21f7c25987cbe8aad5aaacf834ff3e38bfbd1fa43645ce3bec1eab0f0c3b7a4/

Threat name:

Win32.Trojan.AutoitInject

Status:

Malicious

First seen:

2025-02-05 00:41:56 UTC

File Type:

Binary (Archive)

Extracted files:

AV detection:

13 of 38 (34.21%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=uipxyjmyps7ivlk2vlhygt7t4of7xup2insfzy56yhvlb4gdw6sa._file

Result

Malware family:

n/a

Score:

7/10

Tags:

discovery

Link:

https://tria.ge/reports/250205-ketvlaznfp/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

Suspicious use of WriteProcessMemory

System Location Discovery: System Language Discovery

AutoIT Executable

Suspicious use of SetThreadContext

Drops startup file

Executes dropped EXE

Loads dropped DLL

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/a21f7c25987cbe8aad5aaacf834ff3e38bfbd1fa43645ce3bec1eab0f0c3b7a4

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:	AutoIT_Compiled Create hunting rule
Author:	@bartblaze
Description:	Identifies compiled AutoIT script (as EXE). This rule by itself does NOT necessarily mean the detected file is malicious.

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:	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:	SUSP_Imphash_Mar23_3 Create hunting rule
Author:	Arnim Rupp (https://github.com/ruppde)
Description:	Detects imphash often found in malware samples (Maximum 0,25% hits with search for 'imphash:x p:0' on Virustotal) = 99,75% hits
Reference:	Internal Research

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)