MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a39476c2cb94736d32c3d849fe5117691ee71239767ccc506c3c93375f5dbf74. 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: 18

Intelligence 18 IOCs YARA 19 File information Comments

SHA256 hash:	a39476c2cb94736d32c3d849fe5117691ee71239767ccc506c3c93375f5dbf74
SHA3-384 hash:	a11a905247e01e9f40028ad2e672b4c17410dafcd6b67d93c1e6cf0f01f8713382b7a188a79eaa6ea1e4bcb715416b26
SHA1 hash:	5a7a594b9637f460c44890420de82c694b2fa871
MD5 hash:	548ec09fe432f8f309a99236bd0d2335
humanhash:	seven-pluto-fillet-eleven
File name:	PO 25.091 - KTR X MERCURY (JUNCHI).exe
Download:	download sample
Signature	Formbook Create hunting rule
File size:	1'179'136 bytes
First seen:	2025-11-12 14:59:25 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	91d07a5e22681e70764519ae943a5883 (121 x Formbook, 32 x a310Logger, 27 x AgentTesla)
ssdeep	24576:itb20pkaCqT5TBWgNQ7aSDmFd/a2p5vZy2T/QSm66A:vVg5tQ7aSOdhp5hrl5
Threatray	2'751 similar samples on MalwareBazaar
TLSH	T18545CF1363DD8361C7725273BA66BB01BEBF782506A1F46B2FD4093DB920122525EB73
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	lowmal3
Tags:	exe FormBook

Intelligence

File Origin

# of uploads :

# of downloads :

139

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

PO 25.091 - KTR X MERCURY (JUNCHI).exe

Verdict:

No threats detected

Analysis date:

2025-11-12 15:01:52 UTC

Tags:

n/a

Link:

https://app.any.run/tasks/a487c4b7-9768-4316-b885-739ecde554b6

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/37727/

Detection(s):

SecuriteInfo.com.PSW.Agent.BORA.UNOFFICIAL

Verdict:

Malicious

Score:

99.1%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6914a11528ddbbca4d8d6755

Tags:

nymeria autoit emotet

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Creating a file in the %temp% directory

Launching a process

DNS request

Connection attempt

Сreating synchronization primitives

Unauthorized injection to a system process

Verdict:

Likely Malicious

Threat level:

7.5/10

Confidence:

100%

Tags:

adaptive-context anti-debug autoit compiled-script fingerprint installer-heuristic keylogger microsoft_visual_cc nymeria packed phishing

Link:

https://www.filescan.io/uploads/6914a11233abde90e928f905/reports/5e4c99b2-0099-4eb9-b76e-d7fd307091e3/overview

Verdict:

Malicious

Labled as:

AIT:Trojan.Nymeria

Link:

https://www.hybrid-analysis.com/sample/a39476c2cb94736d32c3d849fe5117691ee71239767ccc506c3c93375f5dbf74

Verdict:

Malicious

File Type:

exe x32

First seen:

2025-11-11T20:57:00Z UTC

Last seen:

2025-11-14T11:35:00Z UTC

Hits:

~1000

Detections:

Trojan.Win32.Agent.sb Trojan-PSW.Win32.Stealer.sb Trojan.Win32.Zenpak.sb Trojan.Win32.Strab.sb Trojan.Win32.Inject.sb Trojan-Spy.Win32.Noon.bnqg PDM:Trojan.Win32.Generic Backdoor.Agent.HTTP.C&C Trojan-Spy.Win32.Noon.sb Trojan.Win32.Auzenpak.sb Trojan-Spy.Noon.HTTP.ServerRequest Trojan-Dropper.Win32.Dorifel.sbd

Link:

https://opentip.kaspersky.com/a39476c2cb94736d32c3d849fe5117691ee71239767ccc506c3c93375f5dbf74/results?tab=lookup

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/eeb90f80-3fca-40c4-ae45-3b51f058dc23

Result

Threat name:

FormBook

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1812711

Signature

Binary is likely a compiled AutoIt script file

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)

Sigma detected: Rundll32 Execution Without CommandLine Parameters

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)

Unusual module load detection (module proxying)

Writes to foreign memory regions

Yara detected FormBook

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/a39476c2cb94736d32c3d849fe5117691ee71239767ccc506c3c93375f5dbf74

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/548ec09fe432f8f309a99236bd0d2335

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/a39476c2cb94736d32c3d849fe5117691ee71239767ccc506c3c93375f5dbf74/

Verdict:

Malicious

Threat:

Family.FORMBOOK

Link:

https://tip.neiki.dev/file/a39476c2cb94736d32c3d849fe5117691ee71239767ccc506c3c93375f5dbf74

Threat name:

Win32.Trojan.AutoitInject

Status:

Malicious

First seen:

2025-11-12 00:21:44 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

27 of 38 (71.05%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=uokhnqwlsrzw2mwd3be74uixnepooerzoz6myudmhsjtox25x52a._file

Verdict:

malicious

Label(s):

autoit

formbook

Formbook

11cc53e72e2f50f162ecbf30fe545b9fbdec4527ae1fb36522a563e8303894fc

Formbook

170c2b10322d1b2bbd5403091730544828633e2bdf59af1134b1ae1898a8d90c

Formbook

4139421ed55c3e312d485d67869250d329a4f2e50407e0fcddd74ee419abf216

Formbook

5fcfd8333c4687790ed53e4783d8b2ac2d082059f7f1b14e92dd24e41e831740

Formbook

90b33d8252b9470d19ac4aff278e6470c04bafe0a04cf143b61880257ca13157

Formbook

a21182bf32d320deebafbf52f06c370fe3762ec55793e09df10ce9e27bfe799a

Formbook

b99465dde28898f671538e21692d17def78b40a44b6765093ce3940668614cc7

Formbook

bef94433d26c99a11e7a4408ce031bc5edf77d7aa8286df6aecb695bdd496563

Formbook

faccf8d466113be926dc374092d8424d02329e469b4984d7f988b1a8cd1d1aa3

Formbook

+ 2'741 additional samples on MalwareBazaar

Verdict:

Malicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/fa4ef93c-05f1-4476-a2d8-141e6a79f014

Unpacked files

SH256 hash:

a39476c2cb94736d32c3d849fe5117691ee71239767ccc506c3c93375f5dbf74

MD5 hash:

548ec09fe432f8f309a99236bd0d2335

SHA1 hash:

5a7a594b9637f460c44890420de82c694b2fa871

Link:

https://www.unpac.me/results/3d8ef3c0-fb4f-4b9e-83fa-5b9b6ec2b2fe/

SH256 hash:

beb083916c0287752dc4823c0cea4b443b7e710587159ed6dd07592b12d743dd

MD5 hash:

4c4d1a12304ba2cb73a4ce110e695c25

SHA1 hash:

5638d057170c35e15dac32f2fbe700d6157794b3

Detections:

win_formbook_g0

Link:

https://www.unpac.me/results/3d8ef3c0-fb4f-4b9e-83fa-5b9b6ec2b2fe/

Parent samples :
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SH256 hash:

8cc9dc2e10902f45f7c98f1c365871795f0a6f3f44fafab82c68e1725b9d39eb

MD5 hash:

a5ca2815e7f0d0bb95b5f18c56c454a2

SHA1 hash:

88e63051d922be0a64d0538adcdf20db3b5633d1

Link:

https://www.unpac.me/results/3d8ef3c0-fb4f-4b9e-83fa-5b9b6ec2b2fe/

Malware family:

FormBook

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/a39476c2cb94/report/overview.html

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/a39476c2cb94736d32c3d849fe5117691ee71239767ccc506c3c93375f5dbf74

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:	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_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/

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:	YahLover Create hunting rule
Author:	Kevin Falcoz
Description:	YahLover

File information

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

Malspam

Formbook

exe a39476c2cb94736d32c3d849fe5117691ee71239767ccc506c3c93375f5dbf74

(this sample)

Delivery method

Distributed via e-mail attachment

Cape

https://www.capesandbox.com/analysis/37727/

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