MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b49f326c7a4f5156fc6033fe83b1129ebf9679947afb36ade578a656eac96c10. 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: 20

Intelligence 20 IOCs YARA 25 File information Comments

SHA256 hash:	b49f326c7a4f5156fc6033fe83b1129ebf9679947afb36ade578a656eac96c10
SHA3-384 hash:	2cb5455eefa245f044e38c803a1315f7ec4fcceae79474d5241b301716b65f9e3f499b92a5b4c1ad19cff3ef3a569053
SHA1 hash:	6c8a95f1d439b66e7481471ca88923e630b817db
MD5 hash:	6935dc6198933ab606371efcb374cd9a
humanhash:	five-violet-thirteen-delta
File name:	z1ILDC12DECDOCS.exe
Download:	download sample
Signature	Formbook Create hunting rule
File size:	789'504 bytes
First seen:	2025-12-13 05:30:07 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'817 x AgentTesla, 19'738 x Formbook, 12'282 x SnakeKeylogger)
ssdeep	12288:MjyGJPztq0rlWS9aHswPxZRtyMnX72oy9tGVdxk10S0Ew4aJBRM60VfrXJKz+E:w1rlWiY+oXpyrdMEDMzMpzWd
Threatray	2'338 similar samples on MalwareBazaar
TLSH	T166F4F0D03B2A771ADEA00934E568EEB642F91D68B044BEF359DC3B57759D610AE0CF02
TrID	71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 10.2% (.EXE) Win64 Executable (generic) (10522/11/4) 6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 4.3% (.EXE) Win32 Executable (generic) (4504/4/1) 2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika	pebin
Reporter	FXOLabs
Tags:	exe FormBook

Intelligence

File Origin

# of uploads :

# of downloads :

158

Origin country :

Vendor Threat Intelligence

Malware configuration found for:

RoboSki

Details

Link:

https://research.acce.ciphertechsolutions.com/results/69dc9a81-f17a-4d98-83ad-c90f90d61832/

Malware family:

formbook

ID:

File name:

z1ILDC12DECDOCS.exe

Verdict:

Malicious activity

Analysis date:

2025-12-13 05:31:15 UTC

Tags:

formbook xloader stealer

Link:

https://app.any.run/tasks/94410ffd-a513-4ec2-b1f7-3f5150ac5e78

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/44497/

Detection(s):

Porcupine.MSIL.Kryptik.APBZ.469551.UNOFFICIAL

Verdict:

Malicious

Score:

93.3%

Link:

https://cyber-fortress.com/docs/result/index.php?id=693cf9f1bde6a3e59710f743

Tags:

virus micro msil

Verdict:

Likely Malicious

Threat level:

7.5/10

Confidence:

100%

Tags:

krypt packed vbnet

Link:

https://www.filescan.io/uploads/693cf9ef64bd958a5210e195/reports/c681d7a9-ce5a-4b43-a367-dcf55e0c9c64/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/b49f326c7a4f5156fc6033fe83b1129ebf9679947afb36ade578a656eac96c10

Verdict:

Malicious

File Type:

exe x32

First seen:

2025-12-12T05:49:00Z UTC

Last seen:

2025-12-15T03:20:00Z UTC

Hits:

~100

Detections:

PDM:Trojan.Win32.Generic Backdoor.Agent.HTTP.C&C HEUR:Backdoor.MSIL.Remcos.gen Trojan-PSW.Win32.Stealer.sb Trojan-Spy.Win32.Noon.sb Trojan.MSIL.Taskun.sb Trojan.MSIL.Inject.sb Trojan.MSIL.Crypt.sb Trojan-Spy.Noon.HTTP.ServerRequest Trojan.MSIL.Agent.sb

Link:

https://opentip.kaspersky.com/b49f326c7a4f5156fc6033fe83b1129ebf9679947afb36ade578a656eac96c10/results?tab=lookup

Malware family:

Formbook

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/6d891278-feb5-46b7-b92d-348f25be2afc

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/b49f326c7a4f5156fc6033fe83b1129ebf9679947afb36ade578a656eac96c10

Verdict:

inconclusive

YARA:

10 match(es)

Tags:

.Net Executable Managed .NET PDB Path PE (Portable Executable) PE File Layout SOS: 0.46 Win 32 Exe x86

Link:

https://app.malva.re/file/6935dc6198933ab606371efcb374cd9a

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/b49f326c7a4f5156fc6033fe83b1129ebf9679947afb36ade578a656eac96c10/

Verdict:

Malicious

Threat:

Family.FORMBOOK

Link:

https://tip.neiki.dev/file/b49f326c7a4f5156fc6033fe83b1129ebf9679947afb36ade578a656eac96c10

Threat name:

ByteCode-MSIL.Backdoor.FormBook

Status:

Malicious

First seen:

2025-12-12 09:10:09 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

28 of 38 (73.68%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=wspte3d2j5ivn7dagp7ihmist27zm6mupl5tnlpfpctfn2wjnqia._file

Verdict:

malicious

Label(s):

formbook

Result

Malware family:

formbook

Score:

10/10

Tags:

family:formbook adware discovery rat spyware stealer trojan

Link:

https://tria.ge/reports/251213-f7da4acx4c/

Behaviour

Modifies Internet Explorer settings

Modifies registry class

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: GetForegroundWindowSpam

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

Suspicious use of UnmapMainImage

Suspicious use of WriteProcessMemory

System Location Discovery: System Language Discovery

Suspicious use of SetThreadContext

Formbook payload

Formbook

Formbook family

Verdict:

Malicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/d4eb2e04-196c-45b3-a713-6473be028a7d

Unpacked files

SH256 hash:

b49f326c7a4f5156fc6033fe83b1129ebf9679947afb36ade578a656eac96c10

MD5 hash:

6935dc6198933ab606371efcb374cd9a

SHA1 hash:

6c8a95f1d439b66e7481471ca88923e630b817db

Link:

https://www.unpac.me/results/963ab9be-88ba-48c0-92ff-64146ef1379c/

SH256 hash:

a2da3dcdf8fc922386c59d7027c24fc4a691639ebe6c25b01e8c2614ca10c487

MD5 hash:

f3bf0feee8f0186b7b07131e38360629

SHA1 hash:

2314e50cccafd2fd79b8b85e72b774c05d1a5577

Detections:

SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24

SUSP_OBF_NET_Reactor_Indicators_Jan24

Link:

https://www.unpac.me/results/963ab9be-88ba-48c0-92ff-64146ef1379c/

SH256 hash:

efb6a13171efda5436a296f735066a438a281d0c38a63831d59c9bb86ed4e1cb

MD5 hash:

03be1634a292fb3b9dd147fc52404a43

SHA1 hash:

9b814356f9cf32900e28e1a3ba69018b7b31c471

Detections:

SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24

Link:

https://www.unpac.me/results/963ab9be-88ba-48c0-92ff-64146ef1379c/

Parent samples :
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SH256 hash:

95d4e6d867da09d9fb2302ef94d540644204068b149018da9258cc36397ffbd2

MD5 hash:

136616fdb1e67935a6142086452e8eef

SHA1 hash:

c14840db3410d29d1a16822b917dacf1860b98eb

Link:

https://www.unpac.me/results/963ab9be-88ba-48c0-92ff-64146ef1379c/

SH256 hash:

1291bd4a5cd477d4b98a15b84d22ab6cf77e55fe229e6cf11f02cf8f4ef44a25

MD5 hash:

e32ae965fc0b748c02975770b0fab66e

SHA1 hash:

867bbe1905a06fe05efd0be3500bf851e2e4026f

Link:

https://www.unpac.me/results/963ab9be-88ba-48c0-92ff-64146ef1379c/

Malware family:

FormBook

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/b49f326c7a4f/report/overview.html

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

Threat name:

Suspicious File

Score:

0.61

Link:

https://yomi.yoroi.company/submissions/b49f326c7a4f5156fc6033fe83b1129ebf9679947afb36ade578a656eac96c10

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:	NET Create hunting rule
Author:	malware-lu

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

Rule name:	pe_imphash 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:	Skystars_Malware_Imphash Create hunting rule
Author:	Skystars LightDefender
Description:	imphash

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:	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

Rule name:	win_formbook_w0 Create hunting rule
Author:	@malgamy12

File information

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

Malspam

Formbook

exe b49f326c7a4f5156fc6033fe83b1129ebf9679947afb36ade578a656eac96c10

(this sample)

Delivery method

Distributed via e-mail attachment

Cape

https://www.capesandbox.com/analysis/44497/

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