MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 c8ed881bc89a003b416e90a1ea6fc860c94167360c611e0f8bfbc8e768c357de. 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: | c8ed881bc89a003b416e90a1ea6fc860c94167360c611e0f8bfbc8e768c357de |
|---|---|
| SHA3-384 hash: | 0ea6f1d29e85cc6e75601fffd082bd2d7d24c092583186781e3fc9a423dc46df5f75f9620125a853ad4e18bf0aaadef6 |
| SHA1 hash: | a138c6b35ccae693cb6d16b772799ebcc821bfba |
| MD5 hash: | b8e0c884bb444f860c890851622f720d |
| humanhash: | three-diet-orange-louisiana |
| File name: | c8ed881bc89a003b416e90a1ea6fc860c94167360c611e0f8bfbc8e768c357de |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 1'104'520 bytes |
| First seen: | 2025-10-09 15:03:44 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 6e7f9a29f2c85394521a08b9f31f6275 (293 x GuLoader, 51 x VIPKeylogger, 48 x RemcosRAT) |
| ssdeep | 24576:3TuiJ9h2GCyUnvdrI4xNAlgjITk1v+smFX/22opSkG/UYr:3Tu2snvdsUk1t5upSkG5 |
| Threatray | 1'947 similar samples on MalwareBazaar |
| TLSH | T10B35BE803D9CC097EB6E4DB3744E84B424A42CB9B7F120DF6B94775900A27E255BEE6C |
| 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 |
| Reporter |  adrian__luca |
| Tags: | exe GuLoader signed |
Code Signing Certificate
| Organisation: | Mfikkers |
|---|---|
| Issuer: | Mfikkers |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2025-08-31T06:21:47Z |
| Valid to: | 2026-08-31T06:21:47Z |
| Serial number: | 35943b8ccdc91bc7c2e2fc21253e1834614cbe76 |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | 3850b78c3d80eef6bdeb8452fa55f9a831a053508b4ec0f5366c1242101f5c68 |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
1
# of downloads :
54
Origin country :
HUVendor Threat Intelligence
Malware family:
remcos
ID:
1
File name:
c8ed881bc89a003b416e90a1ea6fc860c94167360c611e0f8bfbc8e768c357de
Verdict:
Malicious activity
Analysis date:
2025-10-10 00:04:10 UTC
Tags:
remcos rat remote
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Verdict:
Malicious
Score:
96.5%
Tags:
injection uloader virus nsis
Result
Verdict:
Clean
Maliciousness:
Behaviour
Creating a window
Searching for the window
Creating a file in the %AppData% subdirectories
Creating a file in the %temp% directory
Delayed reading of the file
Creating a file
Sending a custom TCP request
Verdict:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug blackhole guloader installer microsoft_visual_cc nsis overlay signed
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-09-25T15:24:00Z UTC
Last seen:
2025-10-09T09:36:00Z UTC
Hits:
~10000
Verdict:
Suspicious
Score:
91%
Verdict:
Malware
File Type:
PE
Gathering data
Threat name:
Win32.Trojan.Leonem
Status:
Malicious
First seen:
2025-09-25 22:14:45 UTC
File Type:
PE (Exe)
Extracted files:
24
AV detection:
23 of 36 (63.89%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
cloudeye
Similar samples:
+ 1'937 additional samples on MalwareBazaar
Result
Malware family:
remcos
Score:
10/10
Tags:
family:guloader family:remcos collection discovery downloader persistence rat
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Drops file in Windows directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Adds Run key to start application
Legitimate hosting services abused for malware hosting/C2
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Detected Nirsoft tools
NirSoft MailPassView
NirSoft WebBrowserPassView
Remcos family
Guloader family
Guloader,Cloudeye
Remcos
Malware Config
C2 Extraction:
107.172.235.204:6000
Verdict:
Unknown
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
c8ed881bc89a003b416e90a1ea6fc860c94167360c611e0f8bfbc8e768c357de
MD5 hash:
b8e0c884bb444f860c890851622f720d
SHA1 hash:
a138c6b35ccae693cb6d16b772799ebcc821bfba
SH256 hash:
b7823a15e7b1866ba3d77248f750b66505859d264cfc39d8c8c5e812f8ae4a81
MD5 hash:
a1da6788aeaf78ca4ae1dece8019e49d
SHA1 hash:
d770155e6e9aa69223be198c44a8da26a1756d89
Malware family:
GuLoader
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: | 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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