MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 f09f4b940847bf5c83277322ac6c73c2a6f50efc3ac0c0d606928bc917a35c52. 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
| SHA256 hash: | f09f4b940847bf5c83277322ac6c73c2a6f50efc3ac0c0d606928bc917a35c52 |
|---|---|
| SHA3-384 hash: | f2c2ca99bdca1fdd2b5743e2a104a64f577ac4b4a4b2a7c3d36c020ce5edc7875557c5e7b95791b5635e7b6c56a0bbb6 |
| SHA1 hash: | 63904f9915981c9a0d8dd97e4660e4715bc7ccc3 |
| MD5 hash: | c4403f6583fadcb543ab365e88ee75a6 |
| humanhash: | burger-mars-fourteen-juliet |
| File name: | Justificante.exe |
| Download: | download sample |
| Signature | Formbook |
| File size: | 797'184 bytes |
| First seen: | 2025-09-15 06:57:08 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'611 x Formbook, 12'242 x SnakeKeylogger) |
| ssdeep | 12288:l6aaZsT+J9cmEWPBRPGUKjHAvPL6a3hVfP8jMQq72FFJbVdpbcRccWR0KqOZQ8r2:wFsk9aWK1OL6whVfP+hq78FJbVSeRQE |
| TLSH | T19205F1182259CA06E0764FF51A31D2B40BB8BF9AE521D2078FCA3EDF7876F505A45387 |
| 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 :
1
# of downloads :
108
Origin country :
HUVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Justificante.exe
Verdict:
No threats detected
Analysis date:
2025-09-15 07:05:57 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
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
base64 bitmap formbook krypt lolbin msbuild obfuscated packed packed reconnaissance regsvcs rezer0 roboski schtasks stego vbc zero
Verdict:
Malicious
Labled as:
Trojan.Generic
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-09-11T05:56:00Z UTC
Last seen:
2025-09-11T05:56:00Z 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: 0.36 Win 32 Exe x86
Threat name:
ByteCode-MSIL.Backdoor.FormBook
Status:
Malicious
First seen:
2025-09-11 09:05:18 UTC
AV detection:
18 of 24 (75.00%)
Threat level:
5/5
Detection(s):
Suspicious file
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
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Formbook payload
Formbook family
Formbook
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
f09f4b940847bf5c83277322ac6c73c2a6f50efc3ac0c0d606928bc917a35c52
MD5 hash:
c4403f6583fadcb543ab365e88ee75a6
SHA1 hash:
63904f9915981c9a0d8dd97e4660e4715bc7ccc3
SH256 hash:
4a8af9946518b7adfabab291dccfa4f3e27acac1ef07d4f8a69ebb488994bac1
MD5 hash:
56c90d081546763ea9a07679d338a4bc
SHA1 hash:
344a336b0717e7dd13e8afe573c54bde42947281
SH256 hash:
9d984a516ddf2f0626da31b2605d1fe29b8e4deb6548fa781a678400a20f1394
MD5 hash:
de85fb1b4a53d724ac2f91a785498a17
SHA1 hash:
b550f09799cf3c43c13a8e093c414def077005a8
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
SUSP_OBF_NET_Reactor_Indicators_Jan24
SH256 hash:
24db5fcddaa2fa233e4fd09f19cbef7d021c960c08682b887c148d7caf0ce13f
MD5 hash:
611266fa273cb7671d67e78d594c9cca
SHA1 hash:
f80534f4edf1415af66e72f122ca3dd3725bcad0
SH256 hash:
6d6fc697dae9e280436da56f6e0c230291a43858db6cf22e1772859d5633e409
MD5 hash:
1b73ced7d43a3d0e5b58b9cf097c9941
SHA1 hash:
fd38031c82791b78c85ad5a0af3960b034668dea
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.45
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_AllMal_Detector |
|---|---|
| Author: | DiegoAnalytics |
| Description: | CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication |
| Rule name: | NET |
|---|---|
| Author: | malware-lu |
| Rule name: | pe_imphash |
|---|
| Rule name: | pe_no_import_table |
|---|---|
| Description: | Detect pe file that no import table |
| Rule name: | shellcode |
|---|---|
| Author: | nex |
| Description: | Matched shellcode byte patterns |
| Rule name: | Skystars_Malware_Imphash |
|---|---|
| Author: | Skystars LightDefender |
| Description: | imphash |
| Rule name: | Sus_Obf_Enc_Spoof_Hide_PE |
|---|---|
| Author: | XiAnzheng |
| Description: | Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP) |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Malspam
Delivery method
Distributed via e-mail attachment
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