MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 d4c65b87adae3913a730961c55284473afd9522648dab49cbb44eb716918ea0f. 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: | d4c65b87adae3913a730961c55284473afd9522648dab49cbb44eb716918ea0f |
|---|---|
| SHA3-384 hash: | 445aa9101dfeca76de02603c95bdbbf21e68ffaed7f48d9b0711f482b03ccd6b1e1a8bb9077ad509bf282854fcd7bf7f |
| SHA1 hash: | 8ec6ece663904a9bd5062c8a7d58156f3ed6d31f |
| MD5 hash: | aeef384ff0a9b5c94e84348d8a6fdc79 |
| humanhash: | uniform-grey-red-washington |
| File name: | IAENMAIL.-A4-230726-0830-0002632.pdf.exe |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 862'440 bytes |
| First seen: | 2023-07-26 12:35:43 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 1f23f452093b5c1ff091a2f9fb4fa3e9 (282 x GuLoader, 38 x RemcosRAT, 27 x VIPKeylogger) |
| ssdeep | 12288:pIkdkz6kw3kfkVxkUxkekKkpkRqkwk+kTkZkJkDkqkzkAkkYkk/ck7kAkkPkkjko:pg3MRT3FSf4hANnoVIqtmc0QjW |
| Threatray | 1'173 similar samples on MalwareBazaar |
| TLSH | T1A4059E763A80C7FACFB1BDB2792B48787B56AD7F5058545B338033C907F65A29832606 |
| 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 | e00cfce6bee0c00c (6 x GuLoader) |
| Reporter |  malwarelabnet |
| Tags: | exe GuLoader signed |
Code Signing Certificate
| Organisation: | |
|---|---|
| Issuer: | |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2022-10-07T04:11:49Z |
| Valid to: | 2025-10-06T04:11:49Z |
| Serial number: | 24c2210c454ae8e35591ba776367fa1bd8e077d5 |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | a2477a0206c4e6fccd1a736f3c6f200cdb0b458ae48e792965827b7a1d6f2c66 |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
1
# of downloads :
262
Origin country :
CAVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
IAENMAIL.-A4-230726-0830-0002632.pdf.exe
Verdict:
Malicious activity
Analysis date:
2023-07-26 12:38:17 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 file in the %temp% directory
Creating a file
Delayed reading of the file
Sending a custom TCP request
Gathering data
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, AgentTesla
Detection:
malicious
Classification:
troj.evad.spyw
Score:
100 / 100
Signature
Found malware configuration
Initial sample is a PE file and has a suspicious name
May check the online IP address of the machine
Multi AV Scanner detection for submitted file
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 Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected GuLoader
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Threat name:
Win32.Trojan.Guloader
Status:
Malicious
First seen:
2023-07-26 09:48:25 UTC
File Type:
PE (Exe)
Extracted files:
8
AV detection:
16 of 24 (66.67%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
unknown
Similar samples:
+ 1'163 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
7/10
Tags:
collection discovery
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Enumerates physical storage devices
Program crash
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Checks installed software on the system
Legitimate hosting services abused for malware hosting/C2
Looks up external IP address via web service
Checks QEMU agent file
Loads dropped DLL
Unpacked files
SH256 hash:
a632d74332b3f08f834c732a103dafeb09a540823a2217ca7f49159755e8f1d7
MD5 hash:
75ed96254fbf894e42058062b4b4f0d1
SHA1 hash:
996503f1383b49021eb3427bc28d13b5bbd11977
SH256 hash:
d4c65b87adae3913a730961c55284473afd9522648dab49cbb44eb716918ea0f
MD5 hash:
aeef384ff0a9b5c94e84348d8a6fdc79
SHA1 hash:
8ec6ece663904a9bd5062c8a7d58156f3ed6d31f
Malware family:
GuLoader
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: | PE_Digital_Certificate |
|---|---|
| Author: | albertzsigovits |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
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