MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 87b6afb53d95c2d6cab996658c903eecd4c1f7c4f5dab5dad4949aaccce9fd67. 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: 13


Intelligence 13 IOCs YARA 24 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 87b6afb53d95c2d6cab996658c903eecd4c1f7c4f5dab5dad4949aaccce9fd67
SHA3-384 hash: 332d08b08749d0ae09c37fd273ef39af6d9056e6353e2a9b0300df89caf820ca01fdab2a428add4b4046b3ed5efc6fa5
SHA1 hash: 70538b8de5fe03412e9c74969eceb210f74e549f
MD5 hash: 7dc933a2821e9c329cd6abb9de82f7db
humanhash: nebraska-foxtrot-iowa-sixteen
File name:87b6afb53d95c2d6cab996658c903eecd4c1f7c4f5dab5dad4949aaccce9fd67
Download: download sample
Signature Formbook
Create hunting rule
File size:1'036'800 bytes
First seen:2026-08-10 14:25:16 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (49'192 x AgentTesla, 20'342 x Formbook, 12'365 x SnakeKeylogger)
ssdeep 12288:C3VlJdbfPSLtVRmKu2TGxpshjV76Kqt+wz3wCe6rRsI2ViMKHV71Xj03PyzXbB+P:Cll4tu32KShjg+wm6SI4iMS1z0EsrC
TLSH T1C2251298134BE507CA421B395DB0F27852A84FDAB113C62B7BDC7EDBBD35B5A0D84182
TrID 73.9% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
6.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
6.6% (.EXE) Win64 Executable (generic) (6522/11/2)
4.5% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
62
Origin country :
HU HU
Vendor Threat Intelligence
Malware configuration found for:
NETReactor RoboSki
Details
Link:
https://research.acce.ciphertechsolutions.com/results/1b239e94-1aa8-4556-8c37-8b5971efc558/
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/79862/
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:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
entropy net_reactor obfuscated packed packed
Link:
https://www.filescan.io/uploads/6a79dfb75ca504a8496e24f8/reports/b7348bb3-ae61-4a71-b448-69d6d3d6ec37/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/87b6afb53d95c2d6cab996658c903eecd4c1f7c4f5dab5dad4949aaccce9fd67
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-07-14T23:54:00Z UTC
Last seen:
2026-08-06T11:48:00Z UTC
Hits:
~1000
Link:
https://opentip.kaspersky.com/87b6afb53d95c2d6cab996658c903eecd4c1f7c4f5dab5dad4949aaccce9fd67/results?tab=lookup
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/6b592fe6-b21c-4ca0-beb7-ff591bd61619
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/87b6afb53d95c2d6cab996658c903eecd4c1f7c4f5dab5dad4949aaccce9fd67
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/87b6afb53d95c2d6cab996658c903eecd4c1f7c4f5dab5dad4949aaccce9fd67/
Threat name:
ByteCode-MSIL.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2026-07-15 07:49:31 UTC
File Type:
PE (.Net Exe)
Extracted files:
7
AV detection:
24 of 36 (66.67%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
Formbook
Create hunting rule
XWorm
Create hunting rule
Link:
https://reports.threatray.com/62b884a9-5fb7-4a68-a49c-b017491c2505
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-rrrdka1ard/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Command and Scripting Interpreter: PowerShell
Family: Formbook
Formbook payload
Unpacked files
SH256 hash:
87b6afb53d95c2d6cab996658c903eecd4c1f7c4f5dab5dad4949aaccce9fd67
MD5 hash:
7dc933a2821e9c329cd6abb9de82f7db
SHA1 hash:
70538b8de5fe03412e9c74969eceb210f74e549f
Link:
https://www.unpac.me/results/9176bde6-0c5b-4317-9f82-a0666519fcc1/
SH256 hash:
c1b62a416318f803ab0d139d30122565823092d0573b178c2b44648c11f216ff
MD5 hash:
5e5ca79ec5700e86ce2a228af7978ee2
SHA1 hash:
15f34ff3022e58f5f8fcc7433789909b2f15ff99
Link:
https://www.unpac.me/results/9176bde6-0c5b-4317-9f82-a0666519fcc1/
SH256 hash:
25e3bd8c2a96cc8525e7e065af81d9e0b00e450487f2e867b78370ae03e35c60
MD5 hash:
b8df19b0891da1b6e515316f7331279f
SHA1 hash:
18eb4e641fc55bcd51f0a7ceb5fda0d7e60eb83c
Link:
https://www.unpac.me/results/9176bde6-0c5b-4317-9f82-a0666519fcc1/
SH256 hash:
73edb230de71c7cb2bfde8b4cf65e74870dd3ec99b4b0ac845a807d390d0dea4
MD5 hash:
af96a87cc888e75ab1b52a92555a05d8
SHA1 hash:
6a7b940227cb05c924e78ee0448f269cf6128429
Link:
https://www.unpac.me/results/9176bde6-0c5b-4317-9f82-a0666519fcc1/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/87b6afb53d95/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/87b6afb53d95c2d6cab996658c903eecd4c1f7c4f5dab5dad4949aaccce9fd67

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
Create hunting rule
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: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/79862/

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