MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 cf66a6b3fc9e4924cab3c9ca716649ff3e6d24f54a814f93b8d42015cbcdb69e. 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
| SHA256 hash: | cf66a6b3fc9e4924cab3c9ca716649ff3e6d24f54a814f93b8d42015cbcdb69e |
|---|---|
| SHA3-384 hash: | ab6ae3b1986d899d1995e5a825ead2ac67f0285f92eb1dadc07ac31e26282e4bd0134456407bce39cd588a892932ad65 |
| SHA1 hash: | 2ea8cbe06e0a1e04492f5a8e94b76b09aec73528 |
| MD5 hash: | 3312ffd917a303213a7155b6ade0adc4 |
| humanhash: | princess-tennessee-muppet-lemon |
| File name: | cf66a6b3fc9e4924cab3c9ca716649ff3e6d24f54a814f93b8d42015cbcdb69e |
| Download: | download sample |
| Signature | Formbook |
| File size: | 1'079'808 bytes |
| First seen: | 2026-10-19 07:43:02 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/vnd.microsoft.portable-executable |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (49'298 x AgentTesla, 20'717 x Formbook, 12'402 x SnakeKeylogger) |
| ssdeep | 24576:2ZfoRB4siEK4vgnwBTLA5chPtu9wmDO7H/dlcOfVX:Wn+vhBtheSfM |
| TLSH | T13635DE346218CA37D16E52B0C95FC3F8DA6B5E9AE950DF03AAC5FECBB474B140913612 |
| 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 :
88
Origin country :
HUVendor Threat Intelligence
Malware configuration found for:
RoboSki
Details
Malware family:
n/a
ID:
1
File name:
exe
Verdict:
No threats detected
Analysis date:
2026-10-19 08:46:58 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Verdict:
Malicious
Score:
99.1%
Tags:
agenttesla virus shell msil
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Sending a custom TCP request
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
Gathering data
Verdict:
Malicious
Labled as:
Trojan.Generic
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-09-02T03:40:00Z UTC
Last seen:
2026-10-21T03:50:00Z UTC
Hits:
~1000
Malware family:
Formbook
Verdict:
Malicious
Score:
100%
Verdict:
Malware
File Type:
PE
Verdict:
inconclusive
YARA:
5 match(es)
Tags:
.Net Executable Managed .NET PE (Portable Executable) PE File Layout SOS: 0.53 Win 32 Exe x86
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Status:
Malicious
First seen:
2026-09-02 10:46:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
6
AV detection:
27 of 36 (75.00%)
Threat level:
5/5
Detection(s):
Suspicious file
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
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:
cf66a6b3fc9e4924cab3c9ca716649ff3e6d24f54a814f93b8d42015cbcdb69e
MD5 hash:
3312ffd917a303213a7155b6ade0adc4
SHA1 hash:
2ea8cbe06e0a1e04492f5a8e94b76b09aec73528
SH256 hash:
cf66a6b3fc9e4924cab3c9ca716649ff3e6d24f54a814f93b8d42015cbcdb69e
MD5 hash:
3312ffd917a303213a7155b6ade0adc4
SHA1 hash:
2ea8cbe06e0a1e04492f5a8e94b76b09aec73528
SH256 hash:
2bf01c5b04d52f23c1086ce354e6998e4797c9dd5a6ebf11bee83b608f923c39
MD5 hash:
3128a457366233c6f27cff8536281b25
SHA1 hash:
401df853b40e86150c9d17d0edb4002cd34573d6
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
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: | DotNet_RGB_Embedded_AssemblyLoader_Hunt |
|---|---|
| Author: | ShadowOpCode |
| Description: | Hunt .NET bitmap RGB extraction combined with embedded resources and assembly loading |
| Rule name: | HUNT_NET_Loader_ImagePixel_To_AssemblyLoad |
|---|---|
| Author: | Anish Bogati |
| Description: | Hunting: .NET loader that reads pixel data from an embedded image, loads it as a .NET assembly, and runs it via reflection or late binding. Catches bitmap-steganography loaders. |
| 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 |
| Rule name: | WIN_Malware_Derialock_ForgeAuto_3127f957_Extrait |
|---|---|
| Author: | Marjoriefort |
| Description: | Detects Derialock (pe, etat extrait) |
| Rule name: | WIN_Malware_XWorm_ForgeAuto_6b06c990_Extrait |
|---|---|
| Author: | Marjoriefort |
| Description: | Detects XWorm (pe, etat extrait) |
| Rule name: | WIN_Sample_Unique_69354b41 |
|---|---|
| Author: | Marjoriefort |
| Description: | Specimen unique (soumission Bazaar) - strings distinctifs propres au sample |
| Reference: | 69354b41e10daf03d3f3af881b32d5c0fec56b1cfe96629fd4c5263413a42854.exe |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
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