MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3461dbb55bcf73af2babafd1e537e9d0f2ca89a4117c1bc2a014353cdfe2d95d. 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: 15


Intelligence 15 IOCs YARA 22 File information Comments

SHA256 hash: 3461dbb55bcf73af2babafd1e537e9d0f2ca89a4117c1bc2a014353cdfe2d95d
SHA3-384 hash: 2eeb9105fa26f2f415f9ed1ab26ae1902c08b8345f689d80f99cbdb3aa6f9e7c60d3b1ed15863106ad8e37e643ced280
SHA1 hash: 554f616f9857f6b3f5fb25a060dfdc55c0e7701c
MD5 hash: 0cc56c38dd02639c5ec3d8d90f79de2c
humanhash: kitten-beryllium-october-alpha
File name:3461dbb55bcf73af2babafd1e537e9d0f2ca89a4117c1bc2a014353cdfe2d95d
Download: download sample
Signature Formbook
File size:1'115'648 bytes
First seen:2026-05-08 13:15:11 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 279daa640d9140f9842860a738abd363 (27 x Formbook, 2 x CastleLoader, 1 x RemcosRAT)
ssdeep 24576:0qDEvCTbMWu7rQYlBQcBiT6rprG8aOVD5m6VqHzHw:0TvC/MTQYxsWR7aOVlm6V
TLSH T1E635BF0273C1D022FFAB92734F5AF6515ABC79260123A61F13981D7ABE701B1563E7A3
TrID 29.5% (.EXE) Win64 Executable (generic) (6522/11/2)
22.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
20.3% (.EXE) Win32 Executable (generic) (4504/4/1)
9.1% (.EXE) OS/2 Executable (generic) (2029/13)
9.0% (.EXE) Generic Win/DOS Executable (2002/3)
Magika pebin
dhash icon aae2f3e38383b629 (2'655 x Formbook, 1'203 x CredentialFlusher, 917 x AgentTesla)
Reporter adrian__luca
Tags:exe FormBook

Intelligence


File Origin
# of uploads :
1
# of downloads :
131
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
exe
Verdict:
No threats detected
Analysis date:
2026-05-08 19:01:45 UTC
Tags:
n/a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Gathering data
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Launching a process
Сreating synchronization primitives
Launching cmd.exe command interpreter
Sending a custom TCP request
Setting browser functions hooks
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug autoit barys compiled-script evasive fingerprint keylogger microsoft_visual_cc packed reconnaissance
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-04-15T12:08:00Z UTC
Last seen:
2026-05-06T19:32:00Z UTC
Hits:
~1000
Gathering data
Threat name:
Win32.Trojan.AutoitInject
Status:
Malicious
First seen:
2026-04-15 18:17:08 UTC
File Type:
PE (Exe)
Extracted files:
28
AV detection:
27 of 36 (75.00%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
formbook
Similar samples:
Result
Malware family:
formbook
Score:
  10/10
Tags:
family:formbook campaign:o24a discovery persistence rat spyware stealer trojan
Behaviour
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
Uses Task Scheduler COM API
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Badlisted process makes network request
Family: Formbook
Formbook payload
Unpacked files
SH256 hash:
3461dbb55bcf73af2babafd1e537e9d0f2ca89a4117c1bc2a014353cdfe2d95d
MD5 hash:
0cc56c38dd02639c5ec3d8d90f79de2c
SHA1 hash:
554f616f9857f6b3f5fb25a060dfdc55c0e7701c
SH256 hash:
09e8d54f7d01a4bbf7c03ef286cc70a8c6f601f6b8dbb37d7a3b3f33308b21b1
MD5 hash:
f58b0a4110c1cca40b90a256be127072
SHA1 hash:
c2f4e006955e270509fb49f2cc9b8ab16ecd6f91
Detections:
win_formbook_w0 win_formbook_auto win_formbook_g0 FormBook
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:AutoIT_Compiled
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
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DebuggerCheck__API
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
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:DebuggerException__SetConsoleCtrl
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_detect_tls_callbacks
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:TH_AntiVM_MassHunt_Win_Malware_2026_CYFARE
Author:CYFARE
Description:Detects Windows malware employing anti-VM / anti-sandbox evasion techniques across VMware, VirtualBox, Hyper-V, QEMU, Xen, and generic sandbox environments
Reference:https://cyfare.net/
Rule name:TH_Generic_MassHunt_Win_Malware_2025_CYFARE
Author:CYFARE
Description:Generic Windows malware mass-hunt rule - 2025
Reference:https://cyfare.net/
Rule name:TH_Win_ETW_Bypass_2025_CYFARE
Author:CYFARE
Description:Windows ETW Bypass Detection Rule - 2025
Reference:https://cyfare.net/
Rule name:VECT_Ransomware
Author:Mustafa Bakhit
Description:Detects activity associated with VECT ransomware. This includes registry modifications and deletions, execution of system and defense-evasion commands, suspicious API usage, mutex creation, file and memory manipulation, ransomware note generation, anti-debugging and anti-analysis techniques, and embedded cryptographic constants (SHA256) characteristic of this malware family. Designed for threat intelligence and malware detection environments.

File information


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

Comments