MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 39fb90c640f2ee4c2b84536a9b6b5fa48a5f687840db28144acc6eaa2075ffb5. 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
| SHA256 hash: | 39fb90c640f2ee4c2b84536a9b6b5fa48a5f687840db28144acc6eaa2075ffb5 |
|---|---|
| SHA3-384 hash: | a7fa6c83e9bfcf8703ee906ea5599b56afbf0c20b9c6c67833f9cd74f6522a08927e9d51a8382797f7644687037555b7 |
| SHA1 hash: | 4782b0606c7765d0004464b962cd1988656a28b4 |
| MD5 hash: | 3a9552d78d6e6f8e18b55f42412ec629 |
| humanhash: | mars-nitrogen-illinois-high |
| File name: | DOCUMENTS.exe |
| Download: | download sample |
| Signature | Formbook |
| File size: | 295'000 bytes |
| First seen: | 2023-07-13 13:04:56 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 61259b55b8912888e90f516ca08dc514 (1'059 x Formbook, 741 x AgentTesla, 427 x GuLoader) |
| ssdeep | 6144:PYa6UwIOMGLdGGQ0a7tM132kcXnTwDif9Y+MFx6GSPDpYU:PYSwIbGLdGGQkGkcX0DiW+MFL41z |
| Threatray | 3'316 similar samples on MalwareBazaar |
| TLSH | T14654120C7B7CD0B3E46387326E7A528223E3AA1115BC654B63B03EAE791E151ED1D762 |
| TrID | 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13) 15.9% (.EXE) Win64 Executable (generic) (10523/12/4) 9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 7.6% (.EXE) Win16 NE executable (generic) (5038/12/1) 6.8% (.EXE) Win32 Executable (generic) (4505/5/1) |
| File icon (PE): |  |
| dhash icon | b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla) |
| Reporter |  James_inthe_box |
| Tags: | exe FormBook |
Intelligence
File Origin
# of uploads :
1
# of downloads :
259
Origin country :
USVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
DOCUMENTS.exe
Verdict:
Suspicious activity
Analysis date:
2023-07-13 13:07:15 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Result
Verdict:
Malware
Maliciousness:
Behaviour
Searching for the window
Creating a file in the %temp% directory
Creating a window
Creating a file
Unauthorized injection to a recently created process
Restart of the analyzed sample
Сreating synchronization primitives
Sending a custom TCP request
Result
Malware family:
n/a
Score:
5/10
Tags:
n/a
Behaviour
MalwareBazaar
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
control lolbin overlay packed shell32
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
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.
Malware family:
Formbook
Verdict:
Malicious
Result
Threat name:
NSISDropper, FormBook
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
Detected unpacking (changes PE section rights)
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Initial sample is a PE file and has a suspicious name
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
Sample has a suspicious name (potential lure to open the executable)
Yara detected FormBook
Yara detected NSISDropper
Behaviour
Behavior Graph:
Threat name:
Win32.Trojan.Leonem
Status:
Malicious
First seen:
2023-07-13 01:08:40 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
21 of 23 (91.30%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
formbook
Similar samples:
+ 3'306 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
7/10
Tags:
n/a
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Loads dropped DLL
Unpacked files
SH256 hash:
39fb90c640f2ee4c2b84536a9b6b5fa48a5f687840db28144acc6eaa2075ffb5
MD5 hash:
3a9552d78d6e6f8e18b55f42412ec629
SHA1 hash:
4782b0606c7765d0004464b962cd1988656a28b4
Malware family:
XLoader
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
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: | shellcode |
|---|---|
| Author: | nex |
| Description: | Matched shellcode byte patterns |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Delivery method
Other
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