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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 506177840e9f435f736c19b1c5cb011a4e0eb88924c6fc726f3d72a0147b9a62. 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: 16


Intelligence 16 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 506177840e9f435f736c19b1c5cb011a4e0eb88924c6fc726f3d72a0147b9a62
SHA3-384 hash: d1b617bb4690cfb5dbfc1a60b4f4d273f175a941f7f330a7455e15d79716f61254935a6de13b92a98d90df1ddb43c691
SHA1 hash: 557e32e3c3dadfa744431aaf8a1a749b5e219f19
MD5 hash: bc5c6ddfc38c0e8221f7de28877919f6
humanhash: freddie-ohio-butter-blossom
File name:scan.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:705'336 bytes
First seen:2026-02-11 12:21:46 UTC
Last seen:2026-02-11 13:23:37 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 24f4223e271413c25abad52fd456a9bc (25 x GuLoader, 15 x Loki, 10 x RemcosRAT)
ssdeep 12288:rDujdEIMnv8wIovMQN7+pHkZ6N7dcNsJZWbf6y2w+kgeVpMKNooT7tFf0dw:rDUFlRovMQCTZd14fp2xEpxGoHtFf0K
Threatray 4'351 similar samples on MalwareBazaar
TLSH T1E9E4236DA575C61FC463A8306D29573F1BE95D0A2E06A3EBB3157F186D303207E0A379
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 f0f038d878b0d270 (2 x GuLoader, 2 x RemcosRAT)
Reporter threatcat_ch
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:Camisard
Issuer:Camisard
Algorithm:sha256WithRSAEncryption
Valid from:2025-12-21T09:53:36Z
Valid to:2026-12-21T09:53:36Z
Serial number: 5080b1eb1cb8e08586db66e367fdc1dd813c93a9
Thumbprint Algorithm:SHA256
Thumbprint: 7ed527829ca7daee902c1bf60cf002698d19eaa520c9560a7c491fcec54e0bc0
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
2
# of downloads :
182
Origin country :
CH CH
Vendor Threat Intelligence
Malware configuration found for:
NSIS
Details
Link:
https://research.acce.ciphertechsolutions.com/results/35ae4daf-8ea4-420c-b202-df4e1ae66098/
Malware family:
remcos
Create hunting rule
ID:
1
File name:
48e2c561ec46bdfc3177a3b58bbe23cdcfe9404cce95dba25e3c93273ba07c37.zip
Verdict:
Malicious activity
Analysis date:
2026-02-10 22:53:27 UTC
Tags:
arch-exec remcos
Link:
https://app.any.run/tasks/c4e0a0de-1b5b-4196-b578-1398f08c9b96

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Guloader
Create hunting rule
Link:
https://www.capesandbox.com/analysis/52999/
Verdict:
Malicious
Score:
70%
Link:
https://cyber-fortress.com/docs/result/index.php?id=698bb6e6d255592b7e32c177
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
Delayed reading of the file
Unauthorized injection to a recently created process
Restart of the analyzed sample
Verdict:
Unknown
Threat level:
  2.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug blackhole installer installer installer-heuristic microsoft_visual_cc nsis signed soft-404
Link:
https://www.filescan.io/uploads/698c7477981ff1d38a516429/reports/c362f2b5-5fa3-4c21-8355-1088c1aa499d/overview
Verdict:
Malicious
Labled as:
Malware_59.9
Link:
https://www.hybrid-analysis.com/sample/506177840e9f435f736c19b1c5cb011a4e0eb88924c6fc726f3d72a0147b9a62
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-02-10T17:59:00Z UTC
Last seen:
2026-02-13T05:06:00Z UTC
Hits:
~1000
Detections:
Trojan.NSIS.Makoob.sba Trojan.Win32.GuLoader.sb HEUR:Trojan-Downloader.Win32.Minix.gen Trojan-Downloader.Win32.Minix.sb
Link:
https://opentip.kaspersky.com/506177840e9f435f736c19b1c5cb011a4e0eb88924c6fc726f3d72a0147b9a62/results?tab=lookup
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/fa75d5fe-d9a5-4247-a0a6-4df2af36e824
Result
Threat name:
GuLoader, Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1867356
Signature
AI detected suspicious PE digital signature
Antivirus / Scanner detection for submitted sample
C2 URLs / IPs found in malware configuration
Found malware configuration
Multi AV Scanner detection for submitted file
Switches to a custom stack to bypass stack traces
Tries to detect virtualization through RDTSC time measurements
Unusual module load detection (module proxying)
Yara detected GuLoader
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
Score:
98%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/506177840e9f435f736c19b1c5cb011a4e0eb88924c6fc726f3d72a0147b9a62
Verdict:
inconclusive
YARA:
5 match(es)
Tags:
Executable NSIS Installer PE (Portable Executable) PE File Layout Win 32 Exe x86
Link:
https://app.malva.re/file/bc5c6ddfc38c0e8221f7de28877919f6
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/506177840e9f435f736c19b1c5cb011a4e0eb88924c6fc726f3d72a0147b9a62/
Threat name:
Win32.Malware.Heuristic
Create hunting rule
Status:
Malicious
First seen:
2026-02-10 22:53:28 UTC
File Type:
PE (Exe)
Extracted files:
19
AV detection:
17 of 38 (44.74%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=kbqxpbaot5bv643mdgy4lsybdjha5oejetdpy4tphvzkafd3tjra._file
Verdict:
malicious
Label(s):
cloudeye
Create hunting rule
Similar samples:
0cb6636748ff6a60ebf1a4644a7b4c877f8a19edd8c7a2eac10b34d1bd7cbfbf
GuLoader
199bd66bf9f7b299ebf9068feb2e8648404097e26f86cabc5462973769d24df5
GuLoader
238864be2d731bc5838b95c8bb50b961d19f04b6b64d3daf323db967266fa458
GuLoader
29032ae14e315863a55a0851c3e1c9cb246beb4513a279d8b1bf7fac97be6ff7
GuLoader
482f10e5f1825368c6cdacf482febf39ed6d035ce866aded813d18890cf86dca
GuLoader
79866667d5cd578a1c6eda54a748ff9d316fff39064eecd282bc2a9ad8a5ac7d
GuLoader
8eaffa403a0bacae0e43928c07f77ea8540b480eda49e10d4a44079b8e0236fe
GuLoader
c92b8de7afab714c39ef49e954887a849f7e0e73c1e916ca20c5db06477551af
GuLoader
ea3c63e01dc18acb8940dbbe5bec6c3cdcb6c117b6a213b9e7e02c11caeabee0
GuLoader
error
GuLoader
f2a42302b9c4f3e6c1e2e5d15dfa09cb41aad80ebc13678c4a412f77d4141ca0
GuLoader
+ 4'341 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost discovery rat
Link:
https://tria.ge/reports/260211-pj1wxsat6a/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
System Location Discovery: System Language Discovery
Drops file in Windows directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Contacts third-party web service commonly abused for C2
Loads dropped DLL
Remcos
Remcos family
Malware Config
C2 Extraction:
130.12.182.225:2404
Unpacked files
SH256 hash:
506177840e9f435f736c19b1c5cb011a4e0eb88924c6fc726f3d72a0147b9a62
MD5 hash:
bc5c6ddfc38c0e8221f7de28877919f6
SHA1 hash:
557e32e3c3dadfa744431aaf8a1a749b5e219f19
Link:
https://www.unpac.me/results/6f48c0d0-c72a-419c-9d34-00044aff4277/
SH256 hash:
6950991102462d84fdc0e3b0ae30c95af8c192f77ce3d78e8d54e6b22f7c09ba
MD5 hash:
8cf2ac271d7679b1d68eefc1ae0c5618
SHA1 hash:
7cc1caaa747ee16dc894a600a4256f64fa65a9b8
Link:
https://www.unpac.me/results/6f48c0d0-c72a-419c-9d34-00044aff4277/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/506177840e9f/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/506177840e9f435f736c19b1c5cb011a4e0eb88924c6fc726f3d72a0147b9a62

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
Create hunting rule
Author:Obscurity Labs LLC
Description:Detects NSIS installers by .ndata section + NSIS header string
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

GuLoader

Executable exe 506177840e9f435f736c19b1c5cb011a4e0eb88924c6fc726f3d72a0147b9a62

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/52999/

Comments