MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 31aa8ca9f4fcb46b8028c97aeae2b7d7285f27f8240c0ad5f3e0f08282c8a3b2. 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: 12
| SHA256 hash: | 31aa8ca9f4fcb46b8028c97aeae2b7d7285f27f8240c0ad5f3e0f08282c8a3b2 |
|---|---|
| SHA3-384 hash: | 7b990e2b96c8e71e0f8e59234b3dc8a05a71f4cd1f7475a334284b37190055017f92aac7ea5e2744744a50e5b33ea286 |
| SHA1 hash: | 389b1993b0aacec078bdd97cd939658daa9de3bd |
| MD5 hash: | f1a11c761c5464675a03e9a9d669e0b8 |
| humanhash: | jersey-kitten-hotel-edward |
| File name: | 31aa8ca9f4fcb46b8028c97aeae2b7d7285f27f8240c0ad5f3e0f08282c8a3b2 |
| Download: | download sample |
| Signature | Formbook |
| File size: | 143'872 bytes |
| First seen: | 2023-08-07 13:14:14 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger) |
| ssdeep | 1536:UFD7AhLMtbigaxGOyAN2G6Dbi5WkJQmyia7Z7E04g73K6/b:eD7qLMtCAzb6Jlg7rT |
| Threatray | 3'652 similar samples on MalwareBazaar |
| TLSH | T157E33ECD31788271CA37CFB0DC99C5F2A2A11E86138CDDFE4A802F6734D1E5A5619A5B |
| TrID | 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 10.2% (.EXE) Win64 Executable (generic) (10523/12/4) 6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 4.3% (.EXE) Win32 Executable (generic) (4505/5/1) 2.0% (.ICL) Windows Icons Library (generic) (2059/9) |
| File icon (PE): |  |
| dhash icon | 5e5fde4326252747 (1 x AgentTesla, 1 x Formbook) |
| Reporter |  adrian__luca |
| Tags: | exe FormBook |
Intelligence
File Origin
# of uploads :
1
# of downloads :
265
Origin country :
HUVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
31aa8ca9f4fcb46b8028c97aeae2b7d7285f27f8240c0ad5f3e0f08282c8a3b2
Verdict:
Suspicious activity
Analysis date:
2023-08-07 13:13:59 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Result
Verdict:
Malware
Maliciousness:
Behaviour
Searching for the window
Creating a window
Sending a custom TCP request
Сreating synchronization primitives
DNS request
Creating a file in the %AppData% directory
Launching a process
Creating a file
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Forced shutdown of a system process
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
floxif lokibot packed virus
Verdict:
Malicious
Labled as:
Trojan.Generic
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Malicious
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Writes to foreign memory regions
Yara detected Costura Assembly Loader
Yara detected FormBook
Behaviour
Behavior Graph:
Threat name:
Win32.Trojan.Leonem
Status:
Malicious
First seen:
2023-07-30 04:13:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
6
AV detection:
25 of 38 (65.79%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
formbook
Similar samples:
+ 3'642 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
6/10
Tags:
persistence
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Unpacked files
SH256 hash:
31aa8ca9f4fcb46b8028c97aeae2b7d7285f27f8240c0ad5f3e0f08282c8a3b2
MD5 hash:
f1a11c761c5464675a03e9a9d669e0b8
SHA1 hash:
389b1993b0aacec078bdd97cd939658daa9de3bd
Malware family:
XLoader
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: | meth_get_eip |
|---|---|
| Author: | Willi Ballenthin |
| Rule name: | meth_stackstrings |
|---|---|
| Author: | Willi Ballenthin |
| Rule name: | NET |
|---|---|
| Author: | malware-lu |
| Rule name: | NETexecutableMicrosoft |
|---|---|
| Author: | malware-lu |
| Rule name: | pe_imphash |
|---|
| Rule name: | shellcode |
|---|---|
| Author: | nex |
| Description: | Matched shellcode byte patterns |
| 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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