MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c88a2f23555094ac5f7a43bf369530a4f602fc97885cc193dd0035bd0f3dc60d. 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: 11

Intelligence 11 IOCs YARA 25 File information Comments

SHA256 hash:	c88a2f23555094ac5f7a43bf369530a4f602fc97885cc193dd0035bd0f3dc60d
SHA3-384 hash:	4d448bb413f2ae1402a8b3bc1ab5fc7618ced4cd0f1370877031f2f5ef974bce37e8861955fbb9d3e1f63f10ee47dea1
SHA1 hash:	6baf201fcd83b17dbd8ecb726d4c1e30cad22c44
MD5 hash:	84604b14c2894afcab2edb212ef94e12
humanhash:	kitten-video-bluebird-paris
File name:	LOT 660.zip
Download:	download sample
Signature	Formbook Create hunting rule
File size:	775'093 bytes
First seen:	2025-09-24 01:05:36 UTC
Last seen:	2025-09-25 08:35:25 UTC
File type:	zip
MIME type:	application/zip
ssdeep	12288:ayHAjF5Dbyc2R4EgzEw4knBzBdZVzmFggEQ+geLz1IHt5G+tfmk6f/1oRmhF4WP4:fYF1cBYEZknBz1p6ggigMWjGGCudzX
TLSH	T191F4336DC679A0D478381EA9AA98F29560A22777C4366D405F3BEC331B737120BF4CD6
Magika	zip
Reporter	cocaman
Tags:	FormBook zip

cocaman

Malicious email (T1566.001)
From: "Gandi Siregar <accounting@dodo.com.au>" (likely spoofed)
Received: "from postfix-inbound-5.inbound.mailchannels.net (inbound-egress-7.mailchannels.net [23.83.220.5]) "
Date: "24 Sep 2025 04:46:38 -0700"
Subject: "Documentation LOT - 1195774 "
Attachment: "LOT 660.zip"

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:	LOT 660.exe
File size:	1'228'800 bytes
SHA256 hash:	3196360e6419d66f639687e03ea7093fd479a4975e6223fa44f1e6c545d09ae3
MD5 hash:	61c49518ad134a1b32bf2a1eb821e4c6
MIME type:	application/x-dosexec
Signature	Formbook

Vendor Threat Intelligence

Detection(s):

SecuriteInfo.com.Win32.Trojan.Agent.35E5V6.UNOFFICIAL

Verdict:

Clean

Score:

89.3%

Link:

https://cyber-fortress.com/docs/result/index.php?id=68d343ee53993d8642f75161

Tags:

n/a

Result

Verdict:

Malicious

File Type:

PE File

Link:

https://app.docguard.net/c88a2f23555094ac5f7a43bf369530a4f602fc97885cc193dd0035bd0f3dc60d/results/dashboard

Behaviour

BlacklistAPI detected

Verdict:

Likely Malicious

Threat level:

7.5/10

Confidence:

100%

Tags:

adaptive-context anti-debug autoit cmd compiled-script cscript evasive fingerprint keylogger lolbin microsoft_visual_cc packed wuauclt

Link:

https://www.filescan.io/uploads/68d343ea05398d990aefd369/reports/fa41271a-1983-4644-82e9-5eff1262239b/overview

Verdict:

Suspicious

Labled as:

Mal/AuItInj

Link:

https://www.hybrid-analysis.com/sample/c88a2f23555094ac5f7a43bf369530a4f602fc97885cc193dd0035bd0f3dc60d

Result

Verdict:

MALICIOUS

Link:

https://labs.inquest.net/dfi/sha256/c88a2f23555094ac5f7a43bf369530a4f602fc97885cc193dd0035bd0f3dc60d

Details

Windows PE Executable

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

Verdict:

Malicious

File Type:

zip

First seen:

2025-09-23T23:27:00Z UTC

Last seen:

2025-09-23T23:27:00Z UTC

Hits:

~10

Link:

https://opentip.kaspersky.com/c88a2f23555094ac5f7a43bf369530a4f602fc97885cc193dd0035bd0f3dc60d/results?tab=lookup

Score:

100%

Verdict:

Malware

File Type:

Result

Malware family:

formbook

Score:

10/10

Tags:

family:formbook adware discovery rat spyware stealer trojan

Link:

https://tria.ge/reports/250924-glj27acp9w/

Behaviour

Modifies Internet Explorer settings

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: GetForegroundWindowSpam

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

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:

0.20

Link:

https://yomi.yoroi.company/submissions/c88a2f23555094ac5f7a43bf369530a4f602fc97885cc193dd0035bd0f3dc60d

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

Rule name:	Windows_Generic_Threat_aeaeb5cf Create hunting rule
Author:	Elastic Security

Rule name:	Windows_Trojan_Formbook Create hunting rule
Author:	@malgamy12

Rule name:	Windows_Trojan_Formbook_1112e116 Create hunting rule
Author:	Elastic Security
Reference:	https://www.elastic.co/security-labs/formbook-adopts-cab-less-approach