MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a55c2ba827dfe863836c1379ef981312737636dfe93498126ac6c57237ecd9c3. 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: 16

Intelligence 16 IOCs YARA 25 File information Comments

SHA256 hash:	a55c2ba827dfe863836c1379ef981312737636dfe93498126ac6c57237ecd9c3
SHA3-384 hash:	41d91d095a1742d1c93fc1e146d9487234d325e7ce23ff2aa337607c92653adf07ec6df14570e3821f7e393e4c82030f
SHA1 hash:	e4c8b49a85e945367211b9f553e6c1715498e7d8
MD5 hash:	8acf0d9d166cd3700841c2cd9bec3109
humanhash:	arkansas-whiskey-robin-ten
File name:	a55c2ba827dfe863836c1379ef981312737636dfe93498126ac6c57237ecd9c3
Download:	download sample
Signature	Formbook Create hunting rule
File size:	1'269'760 bytes
First seen:	2025-10-09 15:02:24 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	1895460fffad9475fda0c84755ecfee1 (309 x Formbook, 52 x AgentTesla, 36 x SnakeKeylogger)
ssdeep	24576:h5EmXFtKaL4/oFe5T9yyXYfP1ijXdaavr8D2hqZEi:hPVt/LZeJbInQRaawCU
Threatray	2'232 similar samples on MalwareBazaar
TLSH	T16945AE03B3CD80AFFF9695324B76E2B2467D69270133A51F33D8197DB9701A1462E6E2
TrID	40.3% (.EXE) Win64 Executable (generic) (10522/11/4) 19.3% (.EXE) Win16 NE executable (generic) (5038/12/1) 17.2% (.EXE) Win32 Executable (generic) (4504/4/1) 7.7% (.EXE) OS/2 Executable (generic) (2029/13) 7.6% (.EXE) Generic Win/DOS Executable (2002/3)
Magika	pebin
Reporter	adrian__luca
Tags:	exe FormBook

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

Shipping document p0000000TUOFNJHFBT.z

Verdict:

No threats detected

Analysis date:

2025-09-26 10:56:14 UTC

Tags:

arch-exec

Link:

https://app.any.run/tasks/0de8e9c2-a869-4be4-8eb7-207d6df8d528

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/31803/

Verdict:

Malicious

Score:

99.1%

Link:

https://cyber-fortress.com/docs/result/index.php?id=68e7d12f8b7b147cc4b6309a

Tags:

autoit emotet

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Creating a file in the %temp% directory

Launching a process

Сreating synchronization primitives

Sending a custom TCP request

Unauthorized injection to a system process

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

adaptive-context autoit compiled-script fingerprint fingerprint keylogger lolbin microsoft_visual_cc netsh obfuscated packed packed packer_detected reg threat

Link:

https://www.filescan.io/uploads/68e7ed1c5a3bccf09ebf9299/reports/f4efd3e8-c2e5-4e43-b5dc-62aca909c600/overview

Verdict:

Malicious

Labled as:

Cerbu.Generic

Link:

https://www.hybrid-analysis.com/sample/a55c2ba827dfe863836c1379ef981312737636dfe93498126ac6c57237ecd9c3

Verdict:

Malicious

File Type:

exe x32

First seen:

2025-09-26T04:14:00Z UTC

Last seen:

2025-09-30T02:06:00Z UTC

Hits:

~100

Link:

https://opentip.kaspersky.com/a55c2ba827dfe863836c1379ef981312737636dfe93498126ac6c57237ecd9c3/results?tab=lookup

Malware family:

Formbook

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/63ef58c3-68ce-4234-ae7f-f8456212505b

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/a55c2ba827dfe863836c1379ef981312737636dfe93498126ac6c57237ecd9c3

Verdict:

Malware

YARA:

7 match(es)

Tags:

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

Link:

https://app.malva.re/file/8acf0d9d166cd3700841c2cd9bec3109

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/a55c2ba827dfe863836c1379ef981312737636dfe93498126ac6c57237ecd9c3/

Threat name:

Win32.Trojan.AutoitInject

Status:

Malicious

First seen:

2025-09-26 05:42:25 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

28 of 36 (77.78%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=uvocxkbh37ugha3mcn467gatcjzxmnw75e2jqetky3cxen7m3hbq._file

Verdict:

malicious

Label(s):

formbook

Formbook

2c21a5cafddeb0d3b99eeafd7e0753e7fe1e2eaa0404dc6f882e6a5b85751fd4

Formbook

3196360e6419d66f639687e03ea7093fd479a4975e6223fa44f1e6c545d09ae3

Formbook

5f5a466793a001e84271e4ead05ddaf9c42f1496bb14d984ad63669258c12913

Formbook

7a3cff64ac762d50b7a624e242fe4f2f6e23ad03da661f9b4046e6b604b31836

Formbook

9b03c2490861e7acb0399ba7f83c0624d9601ebeeba650a602a17d58c3a1234f

Formbook

d5524fe820bb5053c55848f1b832179009569460a9879337458502b4c10c8195

Formbook

d6db45310338efda0778f101ea3378831370913796f5971fd861d9f2c3f49ef0

Formbook

+ 2'222 additional samples on MalwareBazaar

Result

Malware family:

formbook

Score:

10/10

Tags:

family:formbook discovery rat spyware stealer trojan

Link:

https://tria.ge/reports/251009-vl7p5sgr9t/

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

Verdict:

Suspicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/0bdc9865-2c2f-4a5a-91c9-d18eb16bce85

Unpacked files

SH256 hash:

a55c2ba827dfe863836c1379ef981312737636dfe93498126ac6c57237ecd9c3

MD5 hash:

8acf0d9d166cd3700841c2cd9bec3109

SHA1 hash:

e4c8b49a85e945367211b9f553e6c1715498e7d8

Link:

https://www.unpac.me/results/af7988cc-0c6d-4996-a63f-554090ae76ed/

SH256 hash:

6cf2028400497105cb028098029f6636d3bcbed047771add6b1e52939331cd67

MD5 hash:

40141ee6d53cb18a62dc9e8d8b065a90

SHA1 hash:

fcbc95c4e2ef52174a312fab22292c4ae613b208

Link:

https://www.unpac.me/results/af7988cc-0c6d-4996-a63f-554090ae76ed/

SH256 hash:

b1532fe52d7eec6a41240f43edbe678e67e92c33ff2431f469424f08078c3a20

MD5 hash:

8880b7b4dce02ba3395dd31e342c11d5

SHA1 hash:

47952488198cba6ad9b30326e2c71c4dda7eaaeb

Detections:

win_formbook_g0

Link:

https://www.unpac.me/results/af7988cc-0c6d-4996-a63f-554090ae76ed/

Parent samples :

9b03c2490861e7acb0399ba7f83c0624d9601ebeeba650a602a17d58c3a1234f
d5524fe820bb5053c55848f1b832179009569460a9879337458502b4c10c8195
a55c2ba827dfe863836c1379ef981312737636dfe93498126ac6c57237ecd9c3
8140b3643310b3758b1f74901780b3ea7bba90d99991d5a266f22151502065b1
b82ea2e6487065076a041f404a94a878f073904ffc8285aeefb392776d6ab075
280d8fa04119af49327d21a5b1b824ffc64816b753056e60d0bf98f134cd2cdf

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

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

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Cape

https://www.capesandbox.com/analysis/31803/

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