MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cb8233a4385873c59751628a7ed8196d8bfe0d7f5d5f2b2aa20d9a41eec64dfd. 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:	cb8233a4385873c59751628a7ed8196d8bfe0d7f5d5f2b2aa20d9a41eec64dfd
SHA3-384 hash:	d24d34fb2d21d8ef97388b7593904dc9e14d0349baa700a6000d0b7b0b6a57a6e3dc26013acb4c2f593bd13712ed99f1
SHA1 hash:	c39486d7098edf58cc22e84bf75fe3604947d84b
MD5 hash:	076bcb443c90aa11a1c9ca9560bf1ee0
humanhash:	arizona-yankee-alpha-vermont
File name:	INVOICE-6098.zip
Download:	download sample
Signature	Formbook Create hunting rule
File size:	590'244 bytes
First seen:	2025-03-12 10:33:44 UTC
Last seen:	Never
File type:	zip
MIME type:	application/zip
ssdeep	12288:NPGw05k5SAHWI6002n857odfwsnR8e8sNe7PrqFdrXG5nkvqHlpo7eM4:I5Ao0rIgosOJscm3rXGB3bPM4
TLSH	T1B5C42397471CAE1ADD9AF38BD1CD0F66EA83426DD683F4D110923D8D1E42ADAC763870
Magika	zip
Reporter	cocaman
Tags:	INVOICE zip

cocaman

Malicious email (T1566.001)
From: "yurio@agrexco.com" (likely spoofed)
Received: "from [195.211.191.129] (unknown [195.211.191.129]) "
Date: "12 Mar 2025 03:33:05 -0700"
Subject: "RE: DUE INVOICE"
Attachment: "INVOICE-6098.zip"

Intelligence

File Origin

# of uploads :

# of downloads :

558

Origin country :

File Archive Information

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

File name:	W5ktZCSi6nMefS2.exe
File size:	679'424 bytes
SHA256 hash:	52eb6516d6851a1f228abaa42737d19bb97d2aa8f62d92f81f501dd43eb14d1a
MD5 hash:	89a38e00ca255a5f1189bfcd3de2bf91
MIME type:	application/x-dosexec
Signature	Formbook

Vendor Threat Intelligence

Verdict:

Malicious

Score:

92.5%

Link:

https://cyber-fortress.com/docs/result/index.php?id=67d15a08dff6bd92190877c9

Tags:

micro shell spawn

Result

Verdict:

Unknown

File Type:

PE File

Link:

https://app.docguard.net/cb8233a4385873c59751628a7ed8196d8bfe0d7f5d5f2b2aa20d9a41eec64dfd/results/dashboard

Verdict:

Suspicious

Threat level:

5/10

Confidence:

100%

Tags:

obfuscated packed packed packer_detected vbnet

Link:

https://www.filescan.io/uploads/67d163233c5f644bd94f0195/reports/e13e724d-d0b2-4654-8139-7a4cf38f26a8/overview

Verdict:

Suspicious

Labled as:

Troj/Krypt

Link:

https://www.hybrid-analysis.com/sample/cb8233a4385873c59751628a7ed8196d8bfe0d7f5d5f2b2aa20d9a41eec64dfd

Result

Verdict:

UNKNOWN

Link:

https://labs.inquest.net/dfi/sha256/cb8233a4385873c59751628a7ed8196d8bfe0d7f5d5f2b2aa20d9a41eec64dfd

Details

Windows PE Executable

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

Score:

99%

Verdict:

Malware

File Type:

Result

Malware family:

formbook

Score:

10/10

Tags:

family:formbook campaign:my18 discovery execution rat spyware stealer trojan

Link:

https://tria.ge/reports/250312-q1w5qstlx8/

Behaviour

Scheduled Task/Job: Scheduled Task

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of UnmapMainImage

Suspicious use of WriteProcessMemory

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Suspicious use of SetThreadContext

Checks computer location settings

Command and Scripting Interpreter: PowerShell

Formbook payload

Formbook

Formbook family

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

Threat name:

Malicious File

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/cb8233a4385873c59751628a7ed8196d8bfe0d7f5d5f2b2aa20d9a41eec64dfd

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:	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:	NETexecutableMicrosoft 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:	Suspicious_Latam_MSI_and_ZIP_Files Create hunting rule
Author:	eremit4, P4nd3m1cb0y
Description:	Detects suspicious .msi and .zip files used in Latam banking trojan campaigns.

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)