MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 12937c11d2e57fd765506ce887b29efedc923a273464d83524334e061d78224c. 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
GuLoader
Vendor detections: 10
| SHA256 hash: | 12937c11d2e57fd765506ce887b29efedc923a273464d83524334e061d78224c |
|---|---|
| SHA3-384 hash: | 74c7a3b1e471596c415f8b12e9c1ba7c19b4c85c1cb69091f773e6bf6920d51821bf4671872ba845d7131b426c6d5e9b |
| SHA1 hash: | 84dbc5bc06aa88d931d795c262c959e76e8c2920 |
| MD5 hash: | 4ee5255998226b831376e7b4eb562a48 |
| humanhash: | kitten-two-video-glucose |
| File name: | 008s06523610054680b6011375030062022.pdf.exe |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 588'784 bytes |
| First seen: | 2022-11-10 19:01:44 UTC |
| Last seen: | 2022-11-10 20:42:41 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 56a78d55f3f7af51443e58e0ce2fb5f6 (720 x GuLoader, 451 x Formbook, 295 x Loki) |
| ssdeep | 12288:GbEpK8dtZaX/SWOZIwX2lYIA2rMd+5H6g2+:GbE08PaUmLDMdBg/ |
| Threatray | 4'769 similar samples on MalwareBazaar |
| TLSH | T1D5C4CEA17366CCD2DC6608F75C92932118A1EF7C78D4DE2366EE372ED8722C3585A14B |
| TrID | 48.8% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13) 16.4% (.EXE) Win64 Executable (generic) (10523/12/4) 10.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 7.8% (.EXE) Win16 NE executable (generic) (5038/12/1) 7.0% (.EXE) Win32 Executable (generic) (4505/5/1) |
| Reporter |  GovCERT_CH |
| Tags: | exe GuLoader signed |
Code Signing Certificate
| Organisation: | |
|---|---|
| Issuer: | |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2022-11-05T23:21:40Z |
| Valid to: | 2025-11-04T23:21:40Z |
| Serial number: | 673755bfa9346c69 |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | 6484ffb817c2ef8cc9265d0f9726d23c31f1923733d4d9ce3a07a54d54c24a47 |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
2
# of downloads :
196
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
008s06523610054680b6011375030062022.pdf.exe
Verdict:
Suspicious activity
Analysis date:
2022-11-10 19:03:01 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:
Clean
Maliciousness:
Behaviour
Searching for the window
Creating a window
Creating a file in the %temp% subdirectories
Sending a custom TCP request
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
overlay packed shell32.dll
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:
AgentTesla, GuLoader
Detection:
malicious
Classification:
troj.evad.spyw
Score:
100 / 100
Signature
Initial sample is a PE file and has a suspicious name
Multi AV Scanner detection for submitted file
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Tries to detect Any.run
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses an obfuscated file name to hide its real file extension (double extension)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected GuLoader
Behaviour
Behavior Graph:
Threat name:
Win32.Trojan.Nulloader
Status:
Malicious
First seen:
2022-11-09 12:53:04 UTC
File Type:
PE (Exe)
Extracted files:
7
AV detection:
12 of 26 (46.15%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Similar samples:
+ 4'759 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
7/10
Tags:
discovery
Behaviour
Enumerates physical storage devices
Drops file in Program Files directory
Checks installed software on the system
Loads dropped DLL
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
8dc562cda7217a3a52db898243de3e2ed68b80e62ddcb8619545ed0b4e7f65a8
MD5 hash:
cff85c549d536f651d4fb8387f1976f2
SHA1 hash:
d41ce3a5ff609df9cf5c7e207d3b59bf8a48530e
SH256 hash:
12937c11d2e57fd765506ce887b29efedc923a273464d83524334e061d78224c
MD5 hash:
4ee5255998226b831376e7b4eb562a48
SHA1 hash:
84dbc5bc06aa88d931d795c262c959e76e8c2920
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: | BitcoinAddress |
|---|---|
| Author: | Didier Stevens (@DidierStevens) |
| Description: | Contains a valid Bitcoin address |
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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