MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 a31f2c90d1b4546cc56693c44f07e4f161d52fecf99c4b1ddc2b2674e49f51fd. 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: | a31f2c90d1b4546cc56693c44f07e4f161d52fecf99c4b1ddc2b2674e49f51fd |
|---|---|
| SHA3-384 hash: | 90f8ed4bd554802b4b66500be92a22769681859460c21b1fef8ee9e2bebb4c47280977b0824799ea6f9141777ffbdc38 |
| SHA1 hash: | ec68b61812ceb090176ff6c5c57fec930fd65c5c |
| MD5 hash: | 9361676b5625a3ee609012345460e915 |
| humanhash: | high-oven-fillet-king |
| File name: | Mapa Quantidades 52359 - ORC 667_PDF.exe |
| Download: | download sample |
| Signature | Formbook |
| File size: | 658'658 bytes |
| First seen: | 2023-05-25 13:57:27 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | b34f154ec913d2d2c435cbd644e91687 (527 x GuLoader, 110 x RemcosRAT, 80 x EpsilonStealer) |
| ssdeep | 6144:Y6bAcJ1bofjd2BOm2lbtnDEjh4UTaYmvz7j4E4XHPQPkNWAwKW9635wAtrDZPLr9:nBunjDb4E4XHPQoWct/Nrl/sEosmZpw |
| Threatray | 1'323 similar samples on MalwareBazaar |
| TLSH | T127E4BE75E7349896EC049239843F9D6E5BA3FF7198B0414E226D3A394AF334F452AD0B |
| 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 | 2e1ece86c09ccee8 (1 x GuLoader, 1 x Formbook) |
| Reporter |  lowmal3 |
| Tags: | exe FormBook |
Intelligence
File Origin
# of uploads :
1
# of downloads :
276
Origin country :
DEVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Mapa Quantidades 52359 - ORC 667_PDF.exe
Verdict:
Malicious activity
Analysis date:
2023-05-25 13:59:59 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Guloader
Result
Verdict:
Clean
Maliciousness:
Behaviour
Creating a window
Creating a file in the %AppData% subdirectories
Creating a file in the %temp% subdirectories
Result
Malware family:
n/a
Score:
5/10
Tags:
n/a
Behaviour
MalwareBazaar
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
guloader lolbin overlay packed shell32.dll
Verdict:
Malicious
Labled as:
Win/malicious_confidence_70%
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:
Unknown
Result
Threat name:
GuLoader
Detection:
malicious
Classification:
troj.evad
Score:
76 / 100
Signature
Hides threads from debuggers
Initial sample is a PE file and has a suspicious name
Machine Learning detection for sample
Multi AV Scanner detection for submitted file
Tries to detect Any.run
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected GuLoader
Behaviour
Behavior Graph:
Threat name:
Win32.Trojan.Leonem
Status:
Malicious
First seen:
2023-05-25 10:14:35 UTC
File Type:
PE (Exe)
Extracted files:
89
AV detection:
20 of 36 (55.56%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Label(s):
formbook
cloudeye
Similar samples:
+ 1'313 additional samples on MalwareBazaar
Result
Malware family:
formbook
Score:
10/10
Tags:
family:formbook campaign:nt6e discovery rat spyware stealer trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in System32 directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Checks installed software on the system
Legitimate hosting services abused for malware hosting/C2
Checks QEMU agent file
Deletes itself
Loads dropped DLL
Formbook payload
Formbook
Unpacked files
SH256 hash:
c2f405d7402f815d0c3fadd9a50f0bbbb1bab9aa38fe347823478a2587299448
MD5 hash:
9625d5b1754bc4ff29281d415d27a0fd
SHA1 hash:
80e85afc5cccd4c0a3775edbb90595a1a59f5ce0
SH256 hash:
a31f2c90d1b4546cc56693c44f07e4f161d52fecf99c4b1ddc2b2674e49f51fd
MD5 hash:
9361676b5625a3ee609012345460e915
SHA1 hash:
ec68b61812ceb090176ff6c5c57fec930fd65c5c
Malware family:
FormBook
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: | meth_stackstrings |
|---|---|
| Author: | Willi Ballenthin |
| Rule name: | Windows_Trojan_Formbook |
|---|---|
| Author: | @malgamy12 |
| Rule name: | Windows_Trojan_Formbook_1112e116 |
|---|---|
| Author: | Elastic Security |
| Rule name: | win_formbook_auto |
|---|---|
| Author: | Felix Bilstein - yara-signator at cocacoding dot com |
| Description: | Detects win.formbook. |
| Rule name: | win_formbook_w0 |
|---|---|
| Author: | @malgamy12 |
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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