MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 51baf7fe0bb25ca0810b31eb224f2c779ccdb6086151139dfcf95ebc70bad029. 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 20 File information Comments

SHA256 hash:	51baf7fe0bb25ca0810b31eb224f2c779ccdb6086151139dfcf95ebc70bad029
SHA3-384 hash:	142e750a8e746f4a8540897f2a2c0a47f84d7fec040ae208d37965c94aed885edc6663fff1dccdf729b5ef4f3ae0b9d5
SHA1 hash:	0c28c463974870411e2e5cd99302bb62e154d92f
MD5 hash:	c9b364176e3a42e2e96a497f1c99e1f7
humanhash:	oregon-iowa-fruit-steak
File name:	DHL-OVER DUE LETTER.exe
Download:	download sample
Signature	Formbook Create hunting rule
File size:	879'104 bytes
First seen:	2025-10-24 02:55:50 UTC
Last seen:	2025-10-24 06:49:20 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	21371b611d91188d602926b15db6bd48 (60 x Formbook, 23 x AgentTesla, 20 x RemcosRAT)
ssdeep	12288:+z7hU5I5yuNHIgzSFKxWltRohBfSTso93UdgQ/PaNP6pq602AqAwobBc7ch0X7rY:+f+iN57Gtene3kPahaxAUABc7chuS4M
Threatray	2'054 similar samples on MalwareBazaar
TLSH	T1E8151252E2DF23608C74CEB19FBC65A1422B7D5C0AEDC80D4EE738A1587215D79AF24B
TrID	39.1% (.EXE) UPX compressed Win32 Executable (27066/9/6) 38.3% (.EXE) Win32 EXE Yoda's Crypter (26569/9/4) 7.2% (.EXE) Win16 NE executable (generic) (5038/12/1) 6.5% (.EXE) Win32 Executable (generic) (4504/4/1) 2.9% (.EXE) OS/2 Executable (generic) (2029/13)
Magika	pebin
Reporter	threatcat_ch
Tags:	exe FormBook

Intelligence

File Origin

# of uploads :

# of downloads :

171

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

DHL-OVER DUE LETTER.exe

Verdict:

No threats detected

Analysis date:

2025-10-24 02:56:12 UTC

Tags:

n/a

Link:

https://app.any.run/tasks/c283d940-16d7-412e-a9d7-6dcb1bed6c79

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/34001/

Verdict:

Malicious

Score:

91.7%

Link:

https://cyber-fortress.com/docs/result/index.php?id=68faeac26c859164aa63d25c

Tags:

malware

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

Verdict:

Suspicious

Threat level:

5/10

Confidence:

100%

Tags:

autoit compiled-script masquerade microsoft_visual_cc obfuscated packed packed packed packer_detected upx

Link:

https://www.filescan.io/uploads/68faeabc3a79800405f4127f/reports/cabb52ca-449b-4c50-87d8-87ee6e48784e/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/51baf7fe0bb25ca0810b31eb224f2c779ccdb6086151139dfcf95ebc70bad029

Verdict:

Malicious

File Type:

exe x32

First seen:

2025-10-23T20:46:00Z UTC

Last seen:

2025-10-26T01:21:00Z UTC

Hits:

~1000

Detections:

VHO:Trojan.Win64.Injects.hav Trojan-PSW.Win32.Stealer.sb Trojan.Win32.Strab.sb Trojan.Win32.Inject.sb Trojan-Spy.Noon.HTTP.ServerRequest Trojan-Dropper.Win32.Dorifel.sbd Trojan.Win32.Zenpak.sb Trojan.Win32.Injuke.pdxi Trojan.Win32.Agent.sb PDM:Trojan.Win32.Generic Trojan-Spy.Win32.Noon.sb

Link:

https://opentip.kaspersky.com/51baf7fe0bb25ca0810b31eb224f2c779ccdb6086151139dfcf95ebc70bad029/results?tab=lookup

Malware family:

Formbook

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/09d4a6c1-0d0a-4cb9-a3b1-07d12c8dd2f4

Result

Threat name:

FormBook

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1801030

Signature

Antivirus detection for URL or domain

Binary is likely a compiled AutoIt script file

Found API chain indicative of sandbox detection

Joe Sandbox ML detected suspicious sample

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/51baf7fe0bb25ca0810b31eb224f2c779ccdb6086151139dfcf95ebc70bad029

Gathering data

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/51baf7fe0bb25ca0810b31eb224f2c779ccdb6086151139dfcf95ebc70bad029/

Verdict:

Malicious

Threat:

Family.FORMBOOK

Link:

https://tip.neiki.dev/file/51baf7fe0bb25ca0810b31eb224f2c779ccdb6086151139dfcf95ebc70bad029

Threat name:

Win32.Trojan.AutoitInject

Status:

Malicious

First seen:

2025-10-24 00:42:45 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

29 of 36 (80.56%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=kg5pp7qlwjokbailghvsetzmo6om3nqimfirhhp47fply4f22auq._file

Result

Malware family:

formbook

Score:

10/10

Tags:

family:formbook discovery rat spyware stealer trojan upx

Link:

https://tria.ge/reports/251024-dezmhscx2g/

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

UPX packed file

Formbook payload

Formbook

Formbook family

Verdict:

Suspicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/606a0af3-af51-41c8-82f1-30c9e122f70a

Unpacked files

SH256 hash:

51baf7fe0bb25ca0810b31eb224f2c779ccdb6086151139dfcf95ebc70bad029

MD5 hash:

c9b364176e3a42e2e96a497f1c99e1f7

SHA1 hash:

0c28c463974870411e2e5cd99302bb62e154d92f

Link:

https://www.unpac.me/results/a7ee5c49-b4c8-4043-8e4d-26196aeb30c3/

SH256 hash:

2921d8c9c6885c886e66e0ccf3396e7cd6d12724a498149fc1a15a9438a8b114

MD5 hash:

0a0af84ac6216601c14d352604dbf3c4

SHA1 hash:

73b9febcc8876baf57540e71cafc2e86bfee6f92

Detections:

AutoIT_Compiled

Link:

https://www.unpac.me/results/a7ee5c49-b4c8-4043-8e4d-26196aeb30c3/

SH256 hash:

57dacc029e706ae184b9f8c3f8efe78b04919967b622d84261d2bf6cc7b1ff62

MD5 hash:

e0d6c5d15b34e08ed4602a1f2a22dd00

SHA1 hash:

129df54a2a54863c5fa96531d12be6702ed302cc

Link:

https://www.unpac.me/results/a7ee5c49-b4c8-4043-8e4d-26196aeb30c3/

SH256 hash:

7fb5e123f51210c3da7f985e84f1d6d19a686f94c5f23fe8e0fdd0e5a7968e05

MD5 hash:

5fa2df5b2ef66b37f9858b52975d88dd

SHA1 hash:

dbb76612f9e9ce2653368ec3c7fa0891fd775580

Detections:

win_formbook_g0

Link:

https://www.unpac.me/results/a7ee5c49-b4c8-4043-8e4d-26196aeb30c3/

Parent samples :
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Malware family:

FormBook

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/51baf7fe0bb2/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/51baf7fe0bb25ca0810b31eb224f2c779ccdb6086151139dfcf95ebc70bad029

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:	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__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:	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:	MD5_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for MD5 constants

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:	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_Win_ETW_Bypass_2025_CYFARE Create hunting rule
Author:	CYFARE
Description:	Windows ETW Bypass Detection Rule - 2025
Reference:	https://cyfare.net/

Rule name:	UPXV200V290MarkusOberhumerLaszloMolnarJohnReiser Create hunting rule
Author:	malware-lu

Rule name:	upx_largefile Create hunting rule
Author:	k3nr9

File information

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

Malspam

Formbook

exe 51baf7fe0bb25ca0810b31eb224f2c779ccdb6086151139dfcf95ebc70bad029

(this sample)

Delivery method

Distributed via e-mail attachment

Cape

https://www.capesandbox.com/analysis/34001/

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