MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 997fd3d11c6decadf7a56e384228fda1a8224bd4ed00e1c7767b998cc08e2196. 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: 14
| SHA256 hash: | 997fd3d11c6decadf7a56e384228fda1a8224bd4ed00e1c7767b998cc08e2196 |
|---|---|
| SHA3-384 hash: | 23ff1a4aab443151ad8af721ee56988bac392c142155a04dfdc6ff433b79c94f2959cca3a2364e21f99cd1debdef22a5 |
| SHA1 hash: | 244244b579bc5dfae727498ac5e03e87cbd467f0 |
| MD5 hash: | 9eb41045e0b75162b8dc6393ceb25124 |
| humanhash: | steak-delta-thirteen-triple |
| File name: | 120325.exe |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 404'216 bytes |
| First seen: | 2025-12-04 07:02:11 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 56a78d55f3f7af51443e58e0ce2fb5f6 (739 x GuLoader, 453 x Formbook, 295 x Loki) |
| ssdeep | 6144:ubE/HUS1Bqe3NU3o3msc9DXSf+LylxSgDiCCS32rCUKCILCwApMDnKIUUmyM:ubYXOo3ms6W+LwkgDmSGrDPgE2GUmj |
| TLSH | T1518423107659C836EE260D301EB41B37EBADFA5DF3A18A4713403B59BD16BC79A0E5C1 |
| 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 | 2882ce69d234b1b8 (5 x RemcosRAT, 2 x GuLoader) |
| Reporter |  amznemu |
| Tags: | exe GuLoader signed |
Code Signing Certificate
| Organisation: | Sanselseres |
|---|---|
| Issuer: | Sanselseres |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2025-10-29T00:25:03Z |
| Valid to: | 2026-10-29T00:25:03Z |
| Serial number: | 6cc0be5165e964753b9139d4a9d7254493c6d9d3 |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | 31d1ad1812096b7ed297fc841b71a3687370fde2406ba49b4b49017300cca48b |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
1
# of downloads :
129
Origin country :
IDVendor Threat Intelligence
Malware configuration found for:
GuLoader
NSIS
Details
GuLoader
an XOR decryption key and an extracted component
GuLoader
a c2 URL, a useragent string, and a string XOR key
NSIS
extracted archive contents
Malware family:
remcos
ID:
1
File name:
TRF02122556.gz
Verdict:
Malicious activity
Analysis date:
2025-12-03 10:21:31 UTC
Tags:
arch-exec rat remcos remote stealer mpress
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Verdict:
Malicious
Score:
92.5%
Tags:
injection sage blic
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-12-03T03:06:00Z UTC
Last seen:
2025-12-06T03:20:00Z UTC
Hits:
~100
Detections:
HEUR:Trojan-Dropper.Win32.Agentb.gen BSS:Trojan.Win32.Generic
Verdict:
Unknown
Score:
94%
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.REMCOS
Threat name:
Win32.Trojan.Generic
Status:
Suspicious
First seen:
2025-12-03 08:33:55 UTC
File Type:
PE (Exe)
Extracted files:
19
AV detection:
16 of 38 (42.11%)
Threat level:
5/5
Detection(s):
Suspicious file
Result
Malware family:
guloader
Score:
10/10
Tags:
family:guloader discovery downloader
Behaviour
Suspicious behavior: MapViewOfSection
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 NtSetInformationThreadHideFromDebugger
Legitimate hosting services abused for malware hosting/C2
Loads dropped DLL
Guloader family
Guloader,Cloudeye
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
997fd3d11c6decadf7a56e384228fda1a8224bd4ed00e1c7767b998cc08e2196
MD5 hash:
9eb41045e0b75162b8dc6393ceb25124
SHA1 hash:
244244b579bc5dfae727498ac5e03e87cbd467f0
SH256 hash:
8dc562cda7217a3a52db898243de3e2ed68b80e62ddcb8619545ed0b4e7f65a8
MD5 hash:
cff85c549d536f651d4fb8387f1976f2
SHA1 hash:
d41ce3a5ff609df9cf5c7e207d3b59bf8a48530e
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: | 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: | shellcode |
|---|---|
| Author: | nex |
| Description: | Matched shellcode byte patterns |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
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