MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bd4f1b34b8e91b5bb8304734bd6e246b038cf28becaf437b32f56c61525130aa. 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: 14


Intelligence 14 IOCs YARA 25 File information Comments
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SHA256 hash: bd4f1b34b8e91b5bb8304734bd6e246b038cf28becaf437b32f56c61525130aa
SHA3-384 hash: ecb93dbf7adaa7f3dba71d77249a44965783e91406dbb1fabffdcdedfe7074bfd5abf3c54a9908c7b9efd0291fa0c6c3
SHA1 hash: 3c128a5909cfef2887d0fb30e7a64a5f92c7a047
MD5 hash: b537550a966e04e3ea3f8b0c670ea02b
humanhash: social-island-mississippi-georgia
File name:bd4f1b34b8e91b5bb8304734bd6e246b038cf28becaf437b32f56c61525130aa
Download: download sample
Signature Formbook
Create hunting rule
File size:1'090'560 bytes
First seen:2026-08-10 13:59:32 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (49'192 x AgentTesla, 20'341 x Formbook, 12'364 x SnakeKeylogger)
ssdeep 24576:5KlCvg2Phs4RUgpaRvChP/MZBLF9qJYR8ETQpM0uhl25UWmrZ2WJH1:5KlCvg2Phs4Sgpao3MZb9qJYR8KQpMHb
TLSH T1DE3523A46A2CD422C8D24B300E20E73943796C99E531C7535FF8FCEBB96AB076C54B56
TrID 70.4% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
6.2% (.EXE) Win64 Executable (generic) (6522/11/2)
4.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
dhash icon 3096968e8eb2b230 (5 x Formbook, 2 x RemcosRAT, 2 x AsyncRAT)
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
65
Origin country :
HU HU
Vendor Threat Intelligence
Malware configuration found for:
RoboSki
Details
Link:
https://research.acce.ciphertechsolutions.com/results/d2831322-ee1e-45e0-8d30-a1dc6898e275/
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/79664/
Detection(s):
SecuriteInfo.com.Trojan.Inject6.63870.6196.31331.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a process with a hidden window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Adding an exclusion to Microsoft Defender
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
agenttesla krypt packed
Link:
https://www.filescan.io/uploads/6a79d9c69319687c8f7c0870/reports/1f3d13db-684d-4c33-bd19-725f664b1926/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/bd4f1b34b8e91b5bb8304734bd6e246b038cf28becaf437b32f56c61525130aa
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-07-06T23:17:00Z UTC
Last seen:
2026-08-11T14:13:00Z UTC
Hits:
~1000
Link:
https://opentip.kaspersky.com/bd4f1b34b8e91b5bb8304734bd6e246b038cf28becaf437b32f56c61525130aa/results?tab=lookup
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/db43d010-008c-4f35-be40-2a188ca906c8
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/bd4f1b34b8e91b5bb8304734bd6e246b038cf28becaf437b32f56c61525130aa
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/bd4f1b34b8e91b5bb8304734bd6e246b038cf28becaf437b32f56c61525130aa/
Threat name:
ByteCode-MSIL.Spyware.Negasteal
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Status:
Malicious
First seen:
2026-07-07 02:21:33 UTC
File Type:
PE (.Net Exe)
Extracted files:
11
AV detection:
26 of 36 (72.22%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=xvhrwnfy5envxobqi42l23renmbyz4ul5sxug6zs6vwgcusrgcva._file
Verdict:
malicious
Label(s):
Formbook
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Link:
https://reports.threatray.com/e6bcaa4e-ab1e-4acf-8a45-972490396bb1
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/260810-rbf8navzgy/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
System Location Discovery: System Language Discovery
SmartAssembly .NET packer
Suspicious use of SetThreadContext
Checks computer location settings
Command and Scripting Interpreter: PowerShell
Family: Formbook
Formbook payload
Unpacked files
SH256 hash:
bd4f1b34b8e91b5bb8304734bd6e246b038cf28becaf437b32f56c61525130aa
MD5 hash:
b537550a966e04e3ea3f8b0c670ea02b
SHA1 hash:
3c128a5909cfef2887d0fb30e7a64a5f92c7a047
Link:
https://www.unpac.me/results/2f95a1be-d7f3-4bc8-8971-0e2badd0746f/
SH256 hash:
8ffe90253b4b192ccb4ef94e49c9506114f2a351055f05929f775799c244da58
MD5 hash:
565c8128946e73313016ec0216400498
SHA1 hash:
a02615ed958dd1c875d7dc47af67d2e4d7473e90
Link:
https://www.unpac.me/results/2f95a1be-d7f3-4bc8-8971-0e2badd0746f/
SH256 hash:
22468d48e78d5f6bfa7d2ed3fd5c7e909523e0f32ce19698be5cbf457451db34
MD5 hash:
f8fe6779c7f598664fed1d7ced8c75da
SHA1 hash:
b7edca17c5605a04c81b811dd93b274041ae85bd
Link:
https://www.unpac.me/results/2f95a1be-d7f3-4bc8-8971-0e2badd0746f/
SH256 hash:
2ff83a9ce65ab1ccd86b1066aee44a24eff1d1475529cc445a1d7685e3e22fa6
MD5 hash:
bbabcd5e10b93ecac7c7e9e06f4cb8f5
SHA1 hash:
ec4ad602855ab44c271092632a2c4cf614fbe8ae
Link:
https://www.unpac.me/results/2f95a1be-d7f3-4bc8-8971-0e2badd0746f/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/bd4f1b34b8e9/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/bd4f1b34b8e91b5bb8304734bd6e246b038cf28becaf437b32f56c61525130aa

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
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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: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/

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/79664/

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