MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 313386d99a89a5f9ab94206e9b951a2f8ed5d968a6b5d821c927ee5f3f83585f. 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: 19

Intelligence 19 IOCs YARA 12 File information Comments

SHA256 hash:	313386d99a89a5f9ab94206e9b951a2f8ed5d968a6b5d821c927ee5f3f83585f
SHA3-384 hash:	fce5f90ffc5dcd2156154e9ccac5750d11ff35b4a4448dabc1237b8ce9c9770fb7b2b5409719f80dce7f8fffc9b63278
SHA1 hash:	aa40605b5f92d3e2b30da0569ef603439f458d4a
MD5 hash:	db6b71175ab4911eafcb668e81ae5110
humanhash:	batman-florida-ack-two
File name:	6e4867e381ff15f43c6ee783765cfda338d224b5b2fb8388ade6f9b54819bae7
Download:	download sample
Signature	Formbook Create hunting rule
File size:	1'268'224 bytes
First seen:	2025-11-06 11:26:39 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	c1ce208b1192bfcf652c179f34f034d3 (17 x Formbook, 5 x AgentTesla, 3 x a310Logger)
ssdeep	24576:Q5EmXFtKaL4/oFe5T9yyXYfP1MAXDzpt9nYKYNd9io3zi6pbou:QPVt/LZeJbInGizplgiqzp
Threatray	2'108 similar samples on MalwareBazaar
TLSH	T1DB45BF0273D1C066FFAB92334F56F6115ABC79260123A62F13981D7ABE701B1563E7A3
TrID	50.4% (.EXE) Win32 EXE Yoda's Crypter (26569/9/4) 19.9% (.EXE) Win64 Executable (generic) (10522/11/4) 9.5% (.EXE) Win16 NE executable (generic) (5038/12/1) 8.5% (.EXE) Win32 Executable (generic) (4504/4/1) 3.8% (.EXE) OS/2 Executable (generic) (2029/13)
Magika	pebin
Reporter	abuse_ch
Tags:	exe FormBook upx-dec

abuse_ch

UPX decompressed file, sourced from SHA256 6e4867e381ff15f43c6ee783765cfda338d224b5b2fb8388ade6f9b54819bae7

UPX unpacked

This file is the unpacked version of a file that has been packed with UPX. Below is furhter information about the parent (compressed) file.

File size (compressed) :	761'344 bytes
File size (de-compressed) :	1'268'224 bytes
Format:	win32/pe
Packed file:	6e4867e381ff15f43c6ee783765cfda338d224b5b2fb8388ade6f9b54819bae7

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

6e4867e381ff15f43c6ee783765cfda338d224b5b2fb8388ade6f9b54819bae7

Verdict:

Malicious activity

Analysis date:

2025-11-06 21:27:10 UTC

Tags:

autoit

Link:

https://app.any.run/tasks/f94f790b-17f5-4555-a84b-4b5fd5704eb8

Note:

ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample

Detection:

Formbook

Link:

https://www.capesandbox.com/analysis/36185/

Detection(s):

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

PUA.Win.Packer.Embedpe-3

PUA.Win.Packer.AcprotectUltraprotect-1

Verdict:

Malicious

Score:

91.7%

Link:

https://cyber-fortress.com/docs/result/index.php?id=690c8647ea0f3e915c239030

Tags:

autoit emotet

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Creating a file in the %temp% directory

Launching a process

Сreating synchronization primitives

Unauthorized injection to a system process

Gathering data

Verdict:

Malicious

Labled as:

Lazy.Generic

Link:

https://www.hybrid-analysis.com/sample/313386d99a89a5f9ab94206e9b951a2f8ed5d968a6b5d821c927ee5f3f83585f

Verdict:

Malicious

File Type:

exe x32

First seen:

2025-11-06T09:53:00Z UTC

Last seen:

2025-11-07T23:29:00Z UTC

Hits:

~100

Link:

https://opentip.kaspersky.com/313386d99a89a5f9ab94206e9b951a2f8ed5d968a6b5d821c927ee5f3f83585f/results?tab=lookup

Malware family:

Formbook

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/97298bd1-001f-4754-8859-f7e6fe8fb6c3

Result

Threat name:

FormBook

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1809201

Signature

Antivirus / Scanner detection for submitted sample

Antivirus detection for URL or domain

Binary is likely a compiled AutoIt script file

Found API chain indicative of sandbox detection

Maps a DLL or memory area into another process

Modifies the context of a thread in another process (thread injection)

Multi AV Scanner detection for submitted file

Performs DNS queries to domains with low reputation

Queues an APC in another process (thread injection)

Suricata IDS alerts for network traffic

Switches to a custom stack to bypass stack traces

Tries to harvest and steal browser information (history, passwords, etc)

Tries to steal Mail credentials (via file / registry access)

Writes to foreign memory regions

Yara detected FormBook

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/313386d99a89a5f9ab94206e9b951a2f8ed5d968a6b5d821c927ee5f3f83585f

Verdict:

Malware

YARA:

7 match(es)

Tags:

AutoIt Decompiled Executable PE (Portable Executable) PE File Layout Suspect Win 32 Exe x86

Link:

https://app.malva.re/file/db6b71175ab4911eafcb668e81ae5110

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/313386d99a89a5f9ab94206e9b951a2f8ed5d968a6b5d821c927ee5f3f83585f/

Threat name:

Win32.Trojan.AutoitInject

Status:

Malicious

First seen:

2025-11-06 11:27:30 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

21 of 23 (91.30%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=gezynwm2rgs7tk4uebxjxfi2f6hnlwliu225qioje7xf6p4dlbpq._file

Result

Malware family:

formbook

Score:

10/10

Tags:

family:formbook discovery rat spyware stealer trojan

Link:

https://tria.ge/reports/251106-nkm6sawmhk/

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

AutoIT Executable

Suspicious use of SetThreadContext

Formbook payload

Formbook

Formbook family

Verdict:

Suspicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/711dc7a2-431e-4e27-a441-ba4f5152cece

Unpacked files

SH256 hash:

313386d99a89a5f9ab94206e9b951a2f8ed5d968a6b5d821c927ee5f3f83585f

MD5 hash:

db6b71175ab4911eafcb668e81ae5110

SHA1 hash:

aa40605b5f92d3e2b30da0569ef603439f458d4a

Detections:

AutoIT_Compiled

Link:

https://www.unpac.me/results/cc866755-663a-4bb9-93df-59d31d2a0c18/

Parent samples :

6e4867e381ff15f43c6ee783765cfda338d224b5b2fb8388ade6f9b54819bae7
313386d99a89a5f9ab94206e9b951a2f8ed5d968a6b5d821c927ee5f3f83585f

SH256 hash:

6d22e71b6d3c76857a7fc7941b1facff35b76295e2f9678b2df24ffda738abbe

MD5 hash:

280bada417847aeb9385a0e7e198d5a0

SHA1 hash:

689a8845e1f64394e745c2b52e3e0e088c524ce1

Link:

https://www.unpac.me/results/cc866755-663a-4bb9-93df-59d31d2a0c18/

SH256 hash:

25c0d277354d1bf9c959335983ed1aa917d66112677b875187e75174f02b49bf

MD5 hash:

5892f5fd62fad19a8540d42e0ce655dd

SHA1 hash:

f809f3bc7285dc12d4079a0c723912d4756ba2b5

Link:

https://www.unpac.me/results/cc866755-663a-4bb9-93df-59d31d2a0c18/

SH256 hash:

641cc1c21aaa03a2ca94f57b514c98a5ebd6374fdd1646d87273011942766744

MD5 hash:

6d71fb8b7569cc7374cd014da7c28690

SHA1 hash:

08ee46bc4191f8855ed7ac215414151e77dcfad3

Detections:

win_formbook_g0

Link:

https://www.unpac.me/results/cc866755-663a-4bb9-93df-59d31d2a0c18/

Parent samples :

e5a80ce04f2119cef25fc5aafaa36c0ec6319724dcc4676c90aa04eddeeafb73
cf7b3427dd7cb3cd41edafb409f7ad0649735e69311db73ec1546c7b25b37e58
6e4867e381ff15f43c6ee783765cfda338d224b5b2fb8388ade6f9b54819bae7
313386d99a89a5f9ab94206e9b951a2f8ed5d968a6b5d821c927ee5f3f83585f
971420c75858816fd7d63e31fd1caa66d69bc64a4d7b9c7b3d14cae787909b67

Malware family:

FormBook

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/313386d99a89/report/overview.html

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

Threat name:

Formbook

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/313386d99a89a5f9ab94206e9b951a2f8ed5d968a6b5d821c927ee5f3f83585f

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_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/