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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4a66534fbea74b27fd7fa3262ac4d025d0f9108b20426b5cd7f8a1784affe2fd. 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: 14


Intelligence 14 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4a66534fbea74b27fd7fa3262ac4d025d0f9108b20426b5cd7f8a1784affe2fd
SHA3-384 hash: 20b0ebe93b1ebd814cf80d4a487334e043a8d5f64dfc6f8b37b83f020ada43af5a72a598b3f37075b8e80405d0334d85
SHA1 hash: 346c344c1d3eb89648f38aaea4edd57c8afad68e
MD5 hash: 7952f513efc05bc3c76707a9091b978a
humanhash: finch-burger-uniform-helium
File name:4a66534fbea74b27fd7fa3262ac4d025d0f9108b20426b5cd7f8a1784affe2fd
Download: download sample
Signature Formbook
Create hunting rule
File size:1'008'128 bytes
First seen:2026-09-10 10:40:55 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (49'233 x AgentTesla, 20'488 x Formbook, 12'372 x SnakeKeylogger)
ssdeep 24576:4QgVa0MYepJvQfeL5Hg6UIbNOOJrFStXTvSzraVXpGPMg9oKOM4Mfu9:LNBTGeiwbYOvStDvSzra5eMg9oKgMf
TLSH T1BD251215971DCF02E9EE87B70E5AF77003B16E9AB561E2258FED5CEB7A217025801283
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 :
56
Origin country :
HU HU
Vendor Threat Intelligence
Malware configuration found for:
RoboSki
Details
Link:
https://research.acce.ciphertechsolutions.com/results/6d5f6d1c-0782-4ba9-bbae-59d7b7ebc118/
Malware family:
n/a
ID:
1
File name:
virus.eml
Verdict:
Malicious activity
Analysis date:
2026-08-17 08:42:40 UTC
Tags:
arch-exec susp-attachments attc-arch attachments qrcode
Link:
https://app.any.run/tasks/a8c200bb-a17d-4a84-b4bf-7ee82221fd7a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/84793/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a 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)
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/4a66534fbea74b27fd7fa3262ac4d025d0f9108b20426b5cd7f8a1784affe2fd
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-08-17T05:03:00Z UTC
Last seen:
2026-09-09T09:54:00Z UTC
Hits:
~1000
Link:
https://opentip.kaspersky.com/4a66534fbea74b27fd7fa3262ac4d025d0f9108b20426b5cd7f8a1784affe2fd/results?tab=lookup
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/1ef9d3c0-388d-44af-bceb-043126d141d5
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/4a66534fbea74b27fd7fa3262ac4d025d0f9108b20426b5cd7f8a1784affe2fd
Verdict:
inconclusive
YARA:
10 match(es)
Tags:
.Net Executable Managed .NET PE (Portable Executable) PE File Layout SOS: 0.38 Win 32 Exe x86
Link:
https://app.malva.re/file/7952f513efc05bc3c76707a9091b978a
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4a66534fbea74b27fd7fa3262ac4d025d0f9108b20426b5cd7f8a1784affe2fd/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2026-08-17 10:28:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
26 of 36 (72.22%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jjtfgt56u5fsp7l7umtcvrgqexipseelebbgwxgx7cqxqsx74l6q._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/260910-mrcg7abj6y/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
SmartAssembly .NET packer
Suspicious use of SetThreadContext
Family: Formbook
Formbook payload
Unpacked files
SH256 hash:
4a66534fbea74b27fd7fa3262ac4d025d0f9108b20426b5cd7f8a1784affe2fd
MD5 hash:
7952f513efc05bc3c76707a9091b978a
SHA1 hash:
346c344c1d3eb89648f38aaea4edd57c8afad68e
Link:
https://www.unpac.me/results/228a697f-5a05-4fa3-9b78-70ba9752c76c/
SH256 hash:
18faa871fb087619315efc24631ccb8f3528b10611ae2632f8180708bf4654a8
MD5 hash:
8b8ad2392c2cd03ef5537ad65d2646d7
SHA1 hash:
015ccd559020d5b61da1b26fd09d64d69b5fae18
Detections:
INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Link:
https://www.unpac.me/results/228a697f-5a05-4fa3-9b78-70ba9752c76c/
Parent samples :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 hash:
06617192c4aaf39c0fc0bca4f4602d5889badac4e7fad226367b6ab51c699b02
MD5 hash:
ca2b3bb6427812efd6bd97953dfc29a3
SHA1 hash:
a180c508e6cfd9ec19b95044581299860f3ab52d
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/228a697f-5a05-4fa3-9b78-70ba9752c76c/
SH256 hash:
1f8f79f5e3745d7b9a9639f44ec29a64d6c3a4064a6dc593d6540756f6a99dc8
MD5 hash:
a64197cfa50cec6961aa73fa8311b727
SHA1 hash:
f98635e122a7be01e02cf3dcffb6101bd134ea6c
Link:
https://www.unpac.me/results/228a697f-5a05-4fa3-9b78-70ba9752c76c/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4a66534fbea7/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.87
Link:
https://yomi.yoroi.company/submissions/4a66534fbea74b27fd7fa3262ac4d025d0f9108b20426b5cd7f8a1784affe2fd

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
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

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/84793/

Comments