MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 0ef58df8a376367a250f7317fa787bb9b189d7f8f9cbcbf292076f4240aced22. 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: 12
| SHA256 hash: | 0ef58df8a376367a250f7317fa787bb9b189d7f8f9cbcbf292076f4240aced22 |
|---|---|
| SHA3-384 hash: | a02c07d3d97592c460f839a0a0093b047c40c66185eb5a59a8fb010959daeab4c0d46460f68285d5169589950a91ad93 |
| SHA1 hash: | 0dc96f8ab9fb06e6a65712dc405a20b5d0ced471 |
| MD5 hash: | b67833a72285c5f1232c47ae94ed6ca1 |
| humanhash: | blossom-autumn-burger-nine |
| File name: | Transferencia_recibo-_18108714.exe |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 941'000 bytes |
| First seen: | 2026-05-20 17:21:16 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 6e7f9a29f2c85394521a08b9f31f6275 (326 x GuLoader, 65 x AgentTesla, 63 x RemcosRAT) |
| ssdeep | 24576:ZMwHqUlYuKq1Pa3WXnLosW5F7v9CIWMOWvB:ZMwKVqMYnA5B9qMOWvB |
| TLSH | T12D15230723F0D156E16688721EBE8D85AB8ADB1614F7CE5F03118F5B6E027C2AD56F0B |
| TrID | 50.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13) 10.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 10.5% (.EXE) Win64 Executable (generic) (6522/11/2) 8.1% (.EXE) Win16 NE executable (generic) (5038/12/1) 7.2% (.EXE) Win32 Executable (generic) (4504/4/1) |
| Magika | pebin |
| dhash icon | f8e49c9ccec4ecf8 (2 x GuLoader) |
| Reporter |  TomU |
| Tags: | exe GuLoader signed |
Code Signing Certificate
| Organisation: | Interresistance |
|---|---|
| Issuer: | Interresistance |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2024-07-21T10:16:23Z |
| Valid to: | 2025-07-21T10:16:23Z |
| Serial number: | 23e2f7d27a30425553ea971b8e3e996ce024a027 |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | 2f081d838b139e4a90b52d450aff0d3f3074417908ac7451fa6beebce3ef96de |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
1
# of downloads :
83
Origin country :
CHVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Pago 4_7_2025.eml
Verdict:
Malicious activity
Analysis date:
2025-04-08 10:16:28 UTC
Tags:
arch-exec attachments attc-arch
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Detection(s):
Verdict:
Malicious
Score:
92.5%
Tags:
injection obfusc crypt
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Creating a file
Launching a process
Sending a custom TCP request
Using the Windows Management Instrumentation requests
Creating a file in the %temp% directory
Verdict:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug expired-cert guloader installer installer installer-heuristic microsoft_visual_cc nsis powershell reconnaissance signed
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-04-07T10:29:00Z UTC
Last seen:
2026-05-22T14:45:00Z UTC
Hits:
~100000
Verdict:
Malicious
Score:
99%
Verdict:
Malware
File Type:
PE
Gathering data
Verdict:
Malicious
Threat name:
Win32.Trojan.GuLoader
Status:
Malicious
First seen:
2025-04-07 14:04:19 UTC
File Type:
PE (Exe)
Extracted files:
9
AV detection:
26 of 38 (68.42%)
Threat level:
5/5
Result
Malware family:
guloader
Score:
10/10
Tags:
family:guloader discovery downloader execution persistence ransomware
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Command and Scripting Interpreter: PowerShell
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Windows directory
Suspicious use of NtSetInformationThreadHideFromDebugger
Contacts third-party web service commonly abused for C2
Loads dropped DLL
Family: Guloader,Cloudeye
Unpacked files
SH256 hash:
0ef58df8a376367a250f7317fa787bb9b189d7f8f9cbcbf292076f4240aced22
MD5 hash:
b67833a72285c5f1232c47ae94ed6ca1
SHA1 hash:
0dc96f8ab9fb06e6a65712dc405a20b5d0ced471
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: | Detect_NSIS_Nullsoft_Installer |
|---|---|
| Author: | Obscurity Labs LLC |
| Description: | Detects NSIS installers by .ndata section + NSIS header string |
| Rule name: | PE_Digital_Certificate |
|---|---|
| Author: | albertzsigovits |
| Rule name: | VECT_Ransomware |
|---|---|
| Author: | Mustafa Bakhit |
| Description: | Detects activity associated with VECT ransomware. This includes registry modifications and deletions, execution of system and defense-evasion commands, suspicious API usage, mutex creation, file and memory manipulation, ransomware note generation, anti-debugging and anti-analysis techniques, and embedded cryptographic constants (SHA256) characteristic of this malware family. Designed for threat intelligence and malware detection environments. |
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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