MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 188c4b2e0362e9b5377e429dede079f8fdd80094cb9706a5fd826e3704f6bd2c. 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 3 File information Comments

SHA256 hash: 188c4b2e0362e9b5377e429dede079f8fdd80094cb9706a5fd826e3704f6bd2c
SHA3-384 hash: 8796f183fcb95a8d138bd8f587d0b2a47e415eaaad3b36293434234b7a59e6a08e971a85728c5927a2ebbf250f171726
SHA1 hash: 2d5c4b86ac0019b5575862200f511267787e44a7
MD5 hash: 152c69c61cbc5018939e456cb5e16b02
humanhash: social-bravo-foxtrot-finch
File name:188c4b2e0362e9b5377e429dede079f8fdd80094cb9706a5fd826e3704f6bd2c
Download: download sample
Signature Formbook
File size:1'038'848 bytes
First seen:2026-08-10 14:26:16 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (49'193 x AgentTesla, 20'344 x Formbook, 12'365 x SnakeKeylogger)
ssdeep 24576:FMX/oG1UWLgrtZYMy0tbQlfX42mb6/VOtM:FMvoG1UDZy0tEhUbyOtM
TLSH T144252249B70BE603C50527354BB2F27523AE9FE26803C22767DD7EDFB92AB199C40251
TrID 72.4% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
6.4% (.EXE) Win64 Executable (generic) (6522/11/2)
4.4% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.EXE) Win16/32 Executable Delphi generic (2072/23)
Magika pebin
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:
NETReactor RoboSki
Details
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a service
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)
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
net_reactor obfuscated packed packed
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-07-15T03:57:00Z UTC
Last seen:
2026-08-12T10:59:00Z UTC
Hits:
~1000
Gathering data
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Status:
Malicious
First seen:
2026-07-15 13:00:59 UTC
File Type:
PE (.Net Exe)
Extracted files:
7
AV detection:
24 of 36 (66.67%)
Threat level:
  5/5
Result
Malware family:
formbook
Score:
  10/10
Tags:
family:formbook discovery rat spyware stealer trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Family: Formbook
Formbook payload
Unpacked files
SH256 hash:
188c4b2e0362e9b5377e429dede079f8fdd80094cb9706a5fd826e3704f6bd2c
MD5 hash:
152c69c61cbc5018939e456cb5e16b02
SHA1 hash:
2d5c4b86ac0019b5575862200f511267787e44a7
SH256 hash:
939fac9a5239ef2dc7d76e6cd2a0505b45c792b40f3e896783336912394f68ac
MD5 hash:
c66324ce034d610dba15de11e1b3624d
SHA1 hash:
43a71db8cb24edcbd1a88a09a64c59e57319a251
SH256 hash:
6a2c5f490525b60cf350c1ece60d3fc4cd9ee752947001be77e803e50397e5fd
MD5 hash:
28301cfa1b4bbbc57909bb8ccf91391e
SHA1 hash:
a5e38391b4ad5203af236e2a8b852eb69163a375
SH256 hash:
b8e948db949dc0aa266e81a80b172dc7f32811453141b98f6e6d24fe8c005667
MD5 hash:
a48573331d350ba018a7491240aaca4e
SHA1 hash:
e47cf61919d0b7fe29a781ad0f28aebef49c2b59
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: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.

Comments