MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 981f606d52c7055dadb6b8e7a01c64c083432b64759ecc6bbd1b488042139b7d. 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: 7

Intelligence 7 IOCs YARA 30 File information Comments

SHA256 hash:	981f606d52c7055dadb6b8e7a01c64c083432b64759ecc6bbd1b488042139b7d
SHA3-384 hash:	82ed48990dfd3cf41e7f8329e174f5a288ad299cd9c49a41b97b40f62d45c87cabac04805be132eea2b3f8bdb7f62e0b
SHA1 hash:	ce97b9829962396560e2bc516a6bd83d42e196be
MD5 hash:	e7a5b0aa2de7c8dec9ab8c397a93cbff
humanhash:	five-helium-seventeen-tango
File name:	Ordem de Compra-241820252.pdf.rar
Download:	download sample
Signature	Formbook Create hunting rule
File size:	714'396 bytes
First seen:	2025-08-27 08:29:32 UTC
Last seen:	Never
File type:	rar
MIME type:	application/x-rar
ssdeep	12288:hJSH5nH769I5J+PgZMz3msGvvKbwH/k4m3mb90WIOOzU6cr7I:h4H5H7v5J3+3mXXKbU/kz+iWIuw
TLSH	T1BDE423BFE24A1363ECCA54F233764B9E78D0A3E74D7819A2D58819402B75DF0E27825D
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

cocaman

Malicious email (T1566.001)
From: "Eduardo Valencia <compras@grupoblux.com>" (likely spoofed)
Received: "from grupoblux.com (unknown [185.222.57.92]) "
Date: "25 Aug 2025 09:04:52 -0700"
Subject: "Ref: Ordem de Compra-241820252"
Attachment: "Ordem de Compra-241820252.pdf.rar"

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

File Archive Information

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

File name:	Ordem de Compra-241820252.pdf.exe
File size:	1'241'600 bytes
SHA256 hash:	08b96a68c593011798acf77b26d2564f0855ad6792f9fb055e9bea2bcae4c1c1
MD5 hash:	01c331f64b98ebed7f3b019a0737c784
MIME type:	application/x-dosexec
Signature	Formbook

Vendor Threat Intelligence

Detection(s):

Sanesecurity.Malware.28929.RarHeur.UNOFFICIAL

Verdict:

Malicious

Score:

81.4%

Link:

https://cyber-fortress.com/docs/result/index.php?id=68adc8abeb163e0ec182cb7f

Tags:

underscore autoit emotet

Verdict:

Likely Malicious

Threat level:

7.5/10

Confidence:

100%

Tags:

adaptive-context anti-debug autoit compiled-script evasive fingerprint keylogger lolbin masquerade microsoft_visual_cc packed threat wmic

Link:

https://www.filescan.io/uploads/68aec2571c81c34281d50199/reports/159b0e75-ca1e-4011-8426-f78e04c36116/overview

Verdict:

Malicious

Labled as:

Trojan.Downloader

Link:

https://www.hybrid-analysis.com/sample/981f606d52c7055dadb6b8e7a01c64c083432b64759ecc6bbd1b488042139b7d

Verdict:

Malicious

File Type:

rar

First seen:

2025-08-27T02:30:00Z UTC

Last seen:

2025-08-27T02:30:00Z UTC

Hits:

~10

Link:

https://opentip.kaspersky.com/981f606d52c7055dadb6b8e7a01c64c083432b64759ecc6bbd1b488042139b7d/results?tab=lookup

Gathering data

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/981f606d52c7055dadb6b8e7a01c64c083432b64759ecc6bbd1b488042139b7d/

Threat name:

Script-AutoIt.Trojan.AutoitInject

Status:

Malicious

First seen:

2025-08-25 17:15:17 UTC

File Type:

Binary (Archive)

Extracted files:

AV detection:

27 of 38 (71.05%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=tapwa3ksy4cv3lnwxdt2ahdeycbugk3eowpmy255dneiaqqttn6q._file

Result

Malware family:

n/a

Score:

5/10

Tags:

discovery

Link:

https://tria.ge/reports/250827-laa3csyjx3/

Behaviour

Suspicious behavior: MapViewOfSection

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

Suspicious use of WriteProcessMemory

Program crash

System Location Discovery: System Language Discovery

Suspicious use of SetThreadContext

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

Threat name:

Legit

Score:

0.00

Link:

https://yomi.yoroi.company/submissions/981f606d52c7055dadb6b8e7a01c64c083432b64759ecc6bbd1b488042139b7d

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:	CP_AllMal_Detector Create hunting rule
Author:	DiegoAnalytics
Description:	CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication

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:	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:	DetectEncryptedVariants Create hunting rule
Author:	Zinyth
Description:	Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded

Rule name:	dgaagas Create hunting rule
Author:	Harshit
Description:	Uses certutil.exe to download a file named test.txt

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:	meth_stackstrings Create hunting rule
Author:	Willi Ballenthin

Rule name:	pe_detect_tls_callbacks 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:	shellcode Create hunting rule
Author:	nex
Description:	Matched shellcode byte patterns

Rule name:	SUSP_RAR_with_PDF_Script_Obfuscation Create hunting rule
Author:	Florian Roth (Nextron Systems)
Description:	Detects RAR file with suspicious .pdf extension prefix to trick users
Reference:	Internal Research

Rule name:	SUSP_RAR_with_PDF_Script_Obfuscation_RID34A4 Create hunting rule
Author:	Florian Roth
Description:	Detects RAR file with suspicious .pdf extension prefix to trick users
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)