MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 981efdbd019dc3cb78b3de022845bf5dec39dce64d73cc39cd75ddb0787aee73. 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: 11
| SHA256 hash: | 981efdbd019dc3cb78b3de022845bf5dec39dce64d73cc39cd75ddb0787aee73 |
|---|---|
| SHA3-384 hash: | 74472189d74aa7992ce1c9b4ac53f66deb0336669885302841709603a309e99bcd18b176871c711fba99e7957a3ad6c1 |
| SHA1 hash: | 2500f17809099f284488c8c466759d0f93406c82 |
| MD5 hash: | d7940254983b03e1aa9d6a378c3e9fe7 |
| humanhash: | gee-neptune-ceiling-florida |
| File name: | 981efdbd019dc3cb78b3de022845bf5dec39dce64d73cc39cd75ddb0787aee73 |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 493'640 bytes |
| First seen: | 2025-11-06 11:40:16 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | b34f154ec913d2d2c435cbd644e91687 (592 x GuLoader, 130 x RemcosRAT, 84 x EpsilonStealer) |
| ssdeep | 6144:imGIhWpu/eUy1UykuYxtMGcokbSL1hi4Y/PoDk1M8OMb1bIOzFFmVIFTk5yycMGw:1CYuB+L1hWJbZrmVGkkTMGpa9S9e7 |
| TLSH | T1A8A4F192B35084DBFD7D8276986B84220AB36E3EC5D15A0F7ACA77256C73293041FD4B |
| TrID | 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13) 15.9% (.EXE) Win64 Executable (generic) (10522/11/4) 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) (4504/4/1) |
| Magika | pebin |
| dhash icon | 8000f8d8dcbcf6f8 (2 x GuLoader) |
| Reporter |  adrian__luca |
| Tags: | exe GuLoader signed |
Code Signing Certificate
| Organisation: | Urimeligst |
|---|---|
| Issuer: | Urimeligst |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2025-09-20T00:49:15Z |
| Valid to: | 2026-09-20T00:49:15Z |
| Serial number: | 130773bf876d1da05b9bf0acb9c7cca686ae6a5c |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | 5672ca2e4d7ec2e380a8260c0b37397eed8aa07d5713d0845cb29f8d30405742 |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
1
# of downloads :
160
Origin country :
HUVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
_981efdbd019dc3cb78b3de022845bf5dec39dce64d73cc39cd75ddb0787aee73.exe
Verdict:
Malicious activity
Analysis date:
2025-11-06 11:42:47 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Verdict:
Malicious
Score:
99.1%
Tags:
obfuscate xtreme virus
Result
Verdict:
Clean
Maliciousness:
Behaviour
Creating a window
Creating a file in the %AppData% subdirectories
Searching for the window
Launching a process
Using the Windows Management Instrumentation requests
Gathering data
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-10-29T04:36:00Z UTC
Last seen:
2025-11-03T10:21:00Z UTC
Hits:
~100
Detections:
Trojan.Makoob.HTTP.C&C Backdoor.Androm.HTTP.Download Trojan-Downloader.Win32.Minix.sb Trojan.NSIS.Makoob.sba HEUR:Trojan.Win32.Makoob.gen
Gathering data
Score:
98%
Verdict:
Malware
File Type:
PE
Verdict:
inconclusive
YARA:
5 match(es)
Tags:
Executable NSIS Installer PE (Portable Executable) PE File Layout Win 32 Exe x86
Verdict:
Malicious
Threat:
Family.GULOADER
Threat name:
Win32.Trojan.GuLoader
Status:
Malicious
First seen:
2025-10-29 19:23:00 UTC
File Type:
PE (Exe)
Extracted files:
17
AV detection:
14 of 36 (38.89%)
Threat level:
5/5
Detection(s):
Suspicious file
Result
Malware family:
guloader
Score:
10/10
Tags:
family:guloader adware discovery downloader execution persistence ransomware spyware
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
Suspicious use of NtSetInformationThreadHideFromDebugger
Badlisted process makes network request
Guloader family
Guloader,Cloudeye
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
981efdbd019dc3cb78b3de022845bf5dec39dce64d73cc39cd75ddb0787aee73
MD5 hash:
d7940254983b03e1aa9d6a378c3e9fe7
SHA1 hash:
2500f17809099f284488c8c466759d0f93406c82
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 |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
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