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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f3cfcbd8c2d33128a836f891791a1743c427f321f538dc208521c371edd03d7f. 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: 9


Intelligence 9 IOCs YARA 15 File information Comments

SHA256 hash: f3cfcbd8c2d33128a836f891791a1743c427f321f538dc208521c371edd03d7f
SHA3-384 hash: d99780b3543a5613e267e2843b0c328075c33c6b1499329e7f04430b3a5a93de61e25e9401ab8eca0379fb88e9202563
SHA1 hash: aff9f64a14f14cad2590e35b6b5800a9ec69f7af
MD5 hash: 2872a5036a6530d001751ac32eecd709
humanhash: coffee-saturn-ack-jersey
File name:f3cfcbd8c2d33128a836f891791a1743c427f321f538dc208521c371edd03d7f
Download: download sample
Signature Formbook
File size:285'696 bytes
First seen:2026-08-10 14:48:21 UTC
Last seen:2026-09-04 20:02:23 UTC
File type:Executable exe
MIME type:application/x-dosexec
ssdeep 6144:8mFbt1h9jV8V70CQ4H063qsQ96osMy2Vmb0LVq/+6LipqULbbK6V0wTLSiFm:tBhPA7I4HvO6ouOmbo6MTfK6V0wyiFm
TLSH T12A54235C000C9473D4D64771EB9B108FB7A4AAB2CFB385076822E2B5677B5D08EB8727
Magika pebin
Reporter adrian__luca
Tags:exe FormBook

Intelligence


File Origin
# of uploads :
2
# of downloads :
72
Origin country :
HU HU
Vendor Threat Intelligence
No detections
Result
Verdict:
Clean
Maliciousness:

Behaviour
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
microsoft_visual_cc packed
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-08-10T12:52:00Z UTC
Last seen:
2026-08-10T14:55:00Z UTC
Hits:
~100
Gathering data
Gathering data
Threat name:
Win32.Backdoor.FormBook
Status:
Malicious
First seen:
2026-08-10 16:09:29 UTC
File Type:
PE (Exe)
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Result
Malware family:
formbook
Score:
  10/10
Tags:
family:formbook discovery rat spyware stealer trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Program crash
System Location Discovery: System Language Discovery
Family: Formbook
Formbook payload
Unpacked files
SH256 hash:
f3cfcbd8c2d33128a836f891791a1743c427f321f538dc208521c371edd03d7f
MD5 hash:
2872a5036a6530d001751ac32eecd709
SHA1 hash:
aff9f64a14f14cad2590e35b6b5800a9ec69f7af
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:CP_Script_Inject_Detector
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DebuggerCheck__GlobalFlags
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Active
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DetectEncryptedVariants
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:dgaagas
Author:Harshit
Description:Uses certutil.exe to download a file named test.txt
Rule name:golang_bin_JCorn_CSC846
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:MD5_Constants
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:pe_no_import_table
Description:Detect pe file that no import table
Rule name:RIPEMD160_Constants
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:shellcode
Author:nex
Description:Matched shellcode byte patterns
Rule name:TH_Win_ETW_Bypass_2025_CYFARE
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.

Comments