MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 a8fa5220308aa1c661186f1aa5aaa6858295d68a782efe4429018fbe41c74997. 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: 17
| SHA256 hash: | a8fa5220308aa1c661186f1aa5aaa6858295d68a782efe4429018fbe41c74997 |
|---|---|
| SHA3-384 hash: | 8c6f055ebae2f73557eb07fb5c2993ba9c6445878ecdad9f02c459fb391c9337a428b753a51b20e12436de35229776aa |
| SHA1 hash: | 1559ab40e8570e8de0d17faf04f5c41f79783e95 |
| MD5 hash: | c9af1ae157551026ab856e3bc465246d |
| humanhash: | yellow-cardinal-oregon-failed |
| File name: | a8fa5220308aa1c661186f1aa5aaa6858295d68a782efe4429018fbe41c74997 |
| Download: | download sample |
| Signature | Formbook |
| File size: | 656'384 bytes |
| First seen: | 2025-10-09 15:14:23 UTC |
| Last seen: | 2025-11-06 10:05:45 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'606 x Formbook, 12'242 x SnakeKeylogger) |
| ssdeep | 12288:KCcFF+odOEyo3BwvYv0mfZgWuSiQcAY+2AFgGsckClQImooPxsOKNlz:EJxCyZgs2+2A6chVY4X |
| Threatray | 1'976 similar samples on MalwareBazaar |
| TLSH | T11FD4F115237EFF03E0E64BF84870D7751BB96E98A811D3464EEBACEB7825B402954393 |
| 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 |  adrian__luca |
| Tags: | exe FormBook |
Intelligence
File Origin
# of uploads :
2
# of downloads :
79
Origin country :
HUVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
a8fa5220308aa1c661186f1aa5aaa6858295d68a782efe4429018fbe41c74997
Verdict:
No threats detected
Analysis date:
2025-10-10 01:34:46 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:
95.7%
Tags:
virus msil
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Сreating synchronization primitives
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Sending a custom TCP request
Verdict:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
obfuscated packed packed packer_detected vbnet
Verdict:
Malicious
Labled as:
Genie.8DN.Generic
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-09-29T03:11:00Z UTC
Last seen:
2025-10-07T02:03:00Z UTC
Hits:
~100
Malware family:
Formbook
Verdict:
Malicious
Score:
100%
Verdict:
Malware
File Type:
PE
Verdict:
inconclusive
YARA:
10 match(es)
Tags:
.Net Executable Managed .NET PDB Path PE (Portable Executable) PE File Layout SOS: 0.44 Win 32 Exe x86
Detection:
formbook
Threat name:
ByteCode-MSIL.Trojan.PureLogStealer
Status:
Malicious
First seen:
2025-09-29 07:48:26 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
29 of 36 (80.56%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
unc_loader_078
unc_loader_037
formbook
Similar samples:
+ 1'966 additional samples on MalwareBazaar
Result
Malware family:
formbook
Score:
10/10
Tags:
family:formbook campaign:tu90 discovery rat spyware stealer trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Formbook payload
Formbook
Formbook family
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
a8fa5220308aa1c661186f1aa5aaa6858295d68a782efe4429018fbe41c74997
MD5 hash:
c9af1ae157551026ab856e3bc465246d
SHA1 hash:
1559ab40e8570e8de0d17faf04f5c41f79783e95
SH256 hash:
bd69d72b3782397e38bff633417f3e68e166fbc6f5edc1749d846f88faf8e42a
MD5 hash:
64aafb1cd1c111dfda393495c776ce02
SHA1 hash:
7079fff52da78bd484b2505de36acb6a0bf5b242
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
SUSP_OBF_NET_Reactor_Indicators_Jan24
SH256 hash:
cdb8ac92c7a341ee1ead563bf7b48a244d580acfb30704043b6d4b24ea5ccf09
MD5 hash:
07ca79c30cd50df8c68d115eebd52475
SHA1 hash:
a70c058086cd6156059b9947aee5bcd3f75f3336
SH256 hash:
aa4a94ed4db230e947bb3ce902930b400a1b80fac3d26d79dc001886b6b41fb5
MD5 hash:
be1f695d03b51640f168785c4270bccc
SHA1 hash:
509fdbe0b9410f9308f0a8e259daeb55dd0f49de
Detections:
win_formbook_w0
win_formbook_g0
win_formbook_auto
FormBook
Windows_Trojan_Formbook
Formbook
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: | 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.
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