MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6b99c4f6b8babd1543ea649610670d97754414f0ca42564205aa4b08ce8471b4. 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 4 File information Comments

SHA256 hash: 6b99c4f6b8babd1543ea649610670d97754414f0ca42564205aa4b08ce8471b4
SHA3-384 hash: 9f4a41117937dede1c927f8a9c754a2c68d5bcc856392d7f4f5a8c4fb4a12a747cc6cfe4294fad9b3874c3d44f3f179b
SHA1 hash: a0cb71bf1ac9fe8957f8660d889460da599447f7
MD5 hash: bca874832fc3ea20b7f09deb4363f681
humanhash: jig-queen-floor-india
File name:PAYMENT.exe
Download: download sample
Signature Formbook
File size:918'016 bytes
First seen:2025-10-13 07:17:27 UTC
Last seen:2025-11-06 10:21:01 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'663 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 24576:a3Fre7lV/3dgz1Us0n+N03WrWmPqQ9F1:QFaBV/3di1+u03WrrFF
TLSH T16815D0B1F2B58859E89867710D26D83412E35DBCECA1D30AC5DA7DA779B3FC2049290F
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 Anonymous
Tags:exe FormBook

Intelligence


File Origin
# of uploads :
6
# of downloads :
115
Origin country :
PL PL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
PAYMENT.exe
Verdict:
No threats detected
Analysis date:
2025-10-13 07:19:52 UTC
Tags:
n/a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
99.1%
Tags:
virus spawn shell
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a process with a hidden window
Launching a process
Creating a file
Sending a custom TCP request
Сreating synchronization primitives
Adding an exclusion to Microsoft Defender
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
base64 bitmap lolbin masquerade msbuild obfuscated packed packed reconnaissance regsvcs rezer0 roboski schtasks stego vbc vbnet zero
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-10-12T22:33:00Z UTC
Last seen:
2025-10-15T03:09:00Z UTC
Hits:
~1000
Detections:
Trojan.MSIL.Crypt.sb HEUR:Trojan.MSIL.Taskun.gen VHO:Backdoor.Win32.Agent.gen Trojan-Spy.Noon.HTTP.ServerRequest PDM:Trojan.Win32.Generic Backdoor.Agent.HTTP.C&C Trojan-Spy.Win32.Noon.sb Trojan.MSIL.Taskun.sb Trojan.MSIL.Inject.sb
Verdict:
inconclusive
YARA:
10 match(es)
Tags:
.Net Executable Managed .NET PDB Path PE (Portable Executable) PE File Layout SOS: 0.25 Win 32 Exe x86
Threat name:
Win32.Trojan.Taskun
Status:
Malicious
First seen:
2025-10-13 01:23:04 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
formbook unc_loader_037
Similar samples:
Result
Malware family:
formbook
Score:
  10/10
Tags:
family:formbook discovery execution rat spyware stealer trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Command and Scripting Interpreter: PowerShell
Formbook payload
Formbook
Formbook family
Unpacked files
SH256 hash:
6b99c4f6b8babd1543ea649610670d97754414f0ca42564205aa4b08ce8471b4
MD5 hash:
bca874832fc3ea20b7f09deb4363f681
SHA1 hash:
a0cb71bf1ac9fe8957f8660d889460da599447f7
SH256 hash:
f7b55edef63e49793f4bee5657464310562e2e5c9f4ad8d39764cc2bd4b8cbb1
MD5 hash:
666353f0798ebdf250512f14f7ce7a41
SHA1 hash:
8736db444e1c1a503b2f5346c6594b02584e5ddd
SH256 hash:
e0c9a16fc6de90ba71033359d14fbaab920ccaefe6fca0f3f0c5287fe795feae
MD5 hash:
9c4603153538a15ab2766cfac1fbc1e7
SHA1 hash:
9a1001b8082bb8e4fe4e9eb31406d429397b3113
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24 SUSP_OBF_NET_Reactor_Indicators_Jan24
SH256 hash:
b6781edd819929c2fe8b41985314c4eaed3c35ce05a61cdf911da3f09de53074
MD5 hash:
69fe9dc75c1792830f0a6d2525d05b22
SHA1 hash:
ae712836721804406194a813b91c7dd9f122d28c
SH256 hash:
fae3fe1a1c49b3df491ce0db82f943afa346ddd580e9f61eda913fcc1c5a5b82
MD5 hash:
c17512299a56fc64e23fa3e1b35699df
SHA1 hash:
a7faee9c891d2004594a4e76df9232ac6af96bb5
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:NET
Author:malware-lu
Rule name:NETexecutableMicrosoft
Author:malware-lu
Rule name:pe_imphash
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash

File information


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

Malspam

Formbook

Executable exe 6b99c4f6b8babd1543ea649610670d97754414f0ca42564205aa4b08ce8471b4

(this sample)

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