MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 658e1034df7e4b35e11fb4403be312fa834bccce8c381b81b6623dfc26a9a2cf. 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: | 658e1034df7e4b35e11fb4403be312fa834bccce8c381b81b6623dfc26a9a2cf |
|---|---|
| SHA3-384 hash: | c44e6a86a781a3117f1a14dcb29a334837bd021d8620794d859946a848b55473f924bf2780a65f738d2d0de0ed49e7eb |
| SHA1 hash: | b3797656662f2feaf0e4b10d28da336b467fe5ce |
| MD5 hash: | 3cabe118b8b13417947ab71f331188ea |
| humanhash: | bacon-edward-two-winter |
| File name: | MT103 SWIFT COPY.exe |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 385'568 bytes |
| First seen: | 2025-09-24 03:32:17 UTC |
| Last seen: | 2025-10-09 14:39:30 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 1f23f452093b5c1ff091a2f9fb4fa3e9 (303 x GuLoader, 47 x AgentTesla, 47 x RemcosRAT) |
| ssdeep | 6144:fp+ggLD6wruEjxtcokCUP9HmQBOKLUxKo+Hf2mMmoCnhDokdu63OCSPKzuBDxg:h8D/goyP9GQBBP5OvsSkkCOtPlI |
| TLSH | T1DE84220479B0C573C8E74A312D6EDB76EF658D0A12A86943D321AA9F3C35351BE0DB63 |
| 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 | c4dadadad2f492c2 (148 x GuLoader, 51 x RemcosRAT, 23 x VIPKeylogger) |
| Reporter |  JAMESWT_WT |
| Tags: | exe GuLoader signed Spam-ITA |
Code Signing Certificate
| Organisation: | Beadeye |
|---|---|
| Issuer: | Beadeye |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2025-09-05T09:42:42Z |
| Valid to: | 2026-09-05T09:42:42Z |
| Serial number: | 422b251c5bff6dad7cf1c41d3e6ba81a059650ae |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | 10cb82ff3fc248c23a553cf33cdae04d18c725019e8d1c560cb03b880a48e298 |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
2
# of downloads :
129
Origin country :
ITVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
MT103 SWIFT COPY.7z
Verdict:
Malicious activity
Analysis date:
2025-09-24 03:34:24 UTC
Tags:
arch-exec
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 obfusc blic
Result
Verdict:
Clean
Maliciousness:
Behaviour
Creating a file in the %temp% directory
Creating a window
Searching for the window
Creating a file in the %AppData% subdirectories
Creating a file
Delayed reading of the file
Sending a custom TCP request
Verdict:
Unknown
Threat level:
2.5/10
Confidence:
100%
Tags:
adaptive-context installer microsoft_visual_cc obfuscated overlay signed
Verdict:
Malicious
Labled as:
Injector.XQFJ
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-09-23T06:02:00Z UTC
Last seen:
2025-09-23T06:02:00Z UTC
Hits:
~1000
Detections:
Trojan.Win32.GuLoader.sb Trojan.NSIS.Pakes.Krynis.sb HEUR:Trojan.Win32.GuLoader.gen Trojan.NSIS.Makoob.sba Packed.NSIS.Krynis.sb
Malware family:
Unlabeled
Verdict:
Unknown
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.Nekark
Status:
Malicious
First seen:
2025-09-23 08:57:10 UTC
File Type:
PE (Exe)
Extracted files:
17
AV detection:
16 of 37 (43.24%)
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
Program crash
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Drops file in Windows directory
Suspicious use of NtSetInformationThreadHideFromDebugger
Loads dropped DLL
Guloader family
Guloader,Cloudeye
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
658e1034df7e4b35e11fb4403be312fa834bccce8c381b81b6623dfc26a9a2cf
MD5 hash:
3cabe118b8b13417947ab71f331188ea
SHA1 hash:
b3797656662f2feaf0e4b10d28da336b467fe5ce
SH256 hash:
a632d74332b3f08f834c732a103dafeb09a540823a2217ca7f49159755e8f1d7
MD5 hash:
75ed96254fbf894e42058062b4b4f0d1
SHA1 hash:
996503f1383b49021eb3427bc28d13b5bbd11977
Malware family:
GuLoader
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.52
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: | CP_AllMal_Detector |
|---|---|
| Author: | DiegoAnalytics |
| Description: | CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication |
| 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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