MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c15f8f79bf8029e04f8edede3ebfe1b24d36e8bacf9092663446af5822129838. 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: 9

Intelligence 9 IOCs YARA 13 File information Comments

SHA256 hash:	c15f8f79bf8029e04f8edede3ebfe1b24d36e8bacf9092663446af5822129838
SHA3-384 hash:	fb9adc1add4dadb1dcab8f2b766191254903dad73699bda4ae05f943491e80c05367916ba941cf95a3562302b4e9433e
SHA1 hash:	4fc3d81a9471ed02a60d259d7b39ed0e2d1adf19
MD5 hash:	39f91c0cd14dcd3e478b1b16ed96b015
humanhash:	north-beer-mango-beryllium
File name:	PAYMENT CONFIRMATION.pdf.rar
Download:	download sample
Signature	Formbook Create hunting rule
File size:	725'498 bytes
First seen:	2025-09-15 06:53:07 UTC
Last seen:	Never
File type:	rar
MIME type:	application/x-rar
ssdeep	12288:9wXaWdi9zv7cIjVGG//ZHeb/bbCY0pgdTe6nDHimgth1Q3JHFEQF25naL:9gdODcKIAxMfPLd66DCr2UQo5ny
TLSH	T102F4231CA14A6FD2878D402B603C0BD9E98A9CE341B99EFFBB5417D71E05B7B522C346
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 rar

cocaman

Malicious email (T1566.001)
From: "=?UTF-8?B?RVJLQU4gw5ZaREVO?= <erkanozdn@gmail.com>" (likely spoofed)
Received: "from gmail.com (unknown [185.222.57.67]) "
Date: "14 Sep 2025 22:48:14 -0700"
Subject: "RE: HALKBANKASI A.S. PAYMENT CONFIRMATION"
Attachment: "PAYMENT CONFIRMATION.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:	PAYMENT CONFIRMATION.pdf.exe
File size:	1'252'864 bytes
SHA256 hash:	11281b9f1d4f0e9042a00ec35f919bca3e86ad1954ee7f5ea29eb218d02f022b
MD5 hash:	16be45c30db762fb83740f38822f13d8
MIME type:	application/x-dosexec
Signature	Formbook

Vendor Threat Intelligence

Detection(s):

Sanesecurity.Malware.28929.RarHeur.UNOFFICIAL

Verdict:

Malicious

Score:

91.7%

Link:

https://cyber-fortress.com/docs/result/index.php?id=68c7b7f3d49ea3f1e4b5d258

Tags:

autoit emotet

Verdict:

Likely Malicious

Threat level:

7.5/10

Confidence:

100%

Tags:

adaptive-context anti-debug autoit compiled-script fingerprint keylogger lolbin masquerade microsoft_visual_cc packed reg regsvr32 wscript

Link:

https://www.filescan.io/uploads/68c7b7f573287948292a1bfe/reports/b9eecc14-21aa-403f-95ed-947d0a46dde6/overview

Verdict:

Malicious

Labled as:

Trojan.Generic

Link:

https://www.hybrid-analysis.com/sample/c15f8f79bf8029e04f8edede3ebfe1b24d36e8bacf9092663446af5822129838

Verdict:

Malicious

File Type:

rar

First seen:

2025-09-15T02:16:00Z UTC

Last seen:

2025-09-15T02:16:00Z UTC

Hits:

~100

Link:

https://opentip.kaspersky.com/c15f8f79bf8029e04f8edede3ebfe1b24d36e8bacf9092663446af5822129838/results?tab=lookup

Verdict:

Malware

YARA:

1 match(es)

Tags:

AutoIt Decompiled Executable PDB Path PE (Portable Executable) PE File Layout Rar Archive Suspect

Link:

https://app.malva.re/file/39f91c0cd14dcd3e478b1b16ed96b015

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/c15f8f79bf8029e04f8edede3ebfe1b24d36e8bacf9092663446af5822129838/

Threat name:

Script-AutoIt.Trojan.AutoitInject

Status:

Malicious

First seen:

2025-09-15 06:53:10 UTC

File Type:

Binary (Archive)

Extracted files:

AV detection:

26 of 38 (68.42%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=yfpy66n7qau6at4o33pd5p7bwjgtn2f2z6ijezrui2xvqiqsta4a._file

Result

Malware family:

formbook

Score:

10/10

Tags:

family:formbook discovery rat spyware stealer trojan

Link:

https://tria.ge/reports/250915-hqn3dawwcw/

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/c15f8f79bf8029e04f8edede3ebfe1b24d36e8bacf9092663446af5822129838

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:	golang_bin_JCorn_CSC846 Create hunting rule
Author:	Justin Cornwell
Description:	CSC-846 Golang detection ruleset

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:	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)

Rule name:	TH_Generic_MassHunt_Win_Malware_2025_CYFARE Create hunting rule
Author:	CYFARE
Description:	Generic Windows malware mass-hunt rule - 2025
Reference:	https://cyfare.net/