MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c5f8cb06519c288fefdff692141cb3c757f47ea67721962ca02e73741aad9785. 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 26 File information Comments

SHA256 hash:	c5f8cb06519c288fefdff692141cb3c757f47ea67721962ca02e73741aad9785
SHA3-384 hash:	472dd22e6acbe485d8bb10606593a7e5d6de150cddfb539f703da37439a4af32d8909b9a5132241d9c1b2f97075e581c
SHA1 hash:	a319a2fdc47ad3817de70cf94c06c5d5d4e7c026
MD5 hash:	4ec3542563f5fabf41515832c1014761
humanhash:	nevada-cola-nebraska-connecticut
File name:	New Order .pdf.rar
Download:	download sample
Signature	Formbook Create hunting rule
File size:	712'268 bytes
First seen:	2025-08-27 13:37:43 UTC
Last seen:	Never
File type:	rar
MIME type:	application/x-rar
ssdeep	12288:nY01MVVJwvnqvXoIlk32HF+y+8inGMcmLHdgDUoCOHq7JpX4+jUzTkwPkbSCCfgS:YWMV+qvXVl5+y+xntcjD3KJpzjzwPRCQ
TLSH	T1D7E423AD6171DF082CCAA4692EFEF4F1A448859C90D4F08B1BBC024F4B61E591777BDA
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: "Arda Akkaya <arda.akkaya@lemar.com.tr>" (likely spoofed)
Received: "from lemar.com.tr (unknown [172.245.23.154]) "
Date: "18 Aug 2025 05:41:26 +0200"
Subject: "New Order draft"
Attachment: "New Order .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:	New Order .pdf.exe
File size:	1'268'736 bytes
SHA256 hash:	fd2ce532e9c7694be3ffe0ce3f0c9024929fd3dca7e9147bafb7b7ef1aeeded8
MD5 hash:	937af05ae072609f5e4f94ce8a373a97
MIME type:	application/x-dosexec
Signature	Formbook

Vendor Threat Intelligence

Detection(s):

Sanesecurity.Malware.28929.RarHeur.UNOFFICIAL

Verdict:

Malicious

Score:

96.5%

Link:

https://cyber-fortress.com/docs/result/index.php?id=68af0a59eb163e0ec182e173

Tags:

underscore autoit emotet

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

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

Link:

https://www.filescan.io/uploads/68af0a531c81c34281d54e75/reports/26a5409a-8c13-4c42-b7a5-294f44e23ab0/overview

Verdict:

Malicious

Labled as:

Trojan.Downloader

Link:

https://www.hybrid-analysis.com/sample/c5f8cb06519c288fefdff692141cb3c757f47ea67721962ca02e73741aad9785

Verdict:

Malicious

File Type:

rar

First seen:

2025-08-17T23:34:00Z UTC

Last seen:

2025-08-17T23:34:00Z UTC

Hits:

~100

Link:

https://opentip.kaspersky.com/c5f8cb06519c288fefdff692141cb3c757f47ea67721962ca02e73741aad9785/results?tab=lookup

Gathering data

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/c5f8cb06519c288fefdff692141cb3c757f47ea67721962ca02e73741aad9785/

Threat name:

Win32.Trojan.AutoitInject

Status:

Malicious

First seen:

2025-08-18 16:54:25 UTC

File Type:

Binary (Archive)

Extracted files:

AV detection:

20 of 24 (83.33%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=yx4mwbsrtqui736762jbihfty5l7i7vgo4qzmlfafzzxigvns6cq._file

Result

Malware family:

formbook

Score:

10/10

Tags:

family:formbook discovery rat spyware stealer trojan

Link:

https://tria.ge/reports/250827-qy1p5s1k12/

Behaviour

Suspicious behavior: EnumeratesProcesses

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

Formbook payload

Formbook

Formbook family

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/c5f8cb06519c288fefdff692141cb3c757f47ea67721962ca02e73741aad9785

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:	Formbook Create hunting rule
Author:	kevoreilly
Description:	Formbook Payload

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)