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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f3ef0cc3468403e333638c5e6aad94b99c14cc5f6f864c49bd90a67d0366bc02. 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


Intelligence 12 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f3ef0cc3468403e333638c5e6aad94b99c14cc5f6f864c49bd90a67d0366bc02
SHA3-384 hash: c942819b80f34b13f0773f3fe93975f2b03b22e517742eb8b66410a9c6c7ec94a594f0f8406df823fd327ecece13c99d
SHA1 hash: 51c0c7e9196a73d9aef4c42f2fba1e4cb9416cff
MD5 hash: 739e07697671b960fdaabca66751e167
humanhash: washington-item-winter-crazy
File name:f3ef0cc3468403e333638c5e6aad94b99c14cc5f6f864c49bd90a67d0366bc02
Download: download sample
Signature GuLoader
Create hunting rule
File size:408'424 bytes
First seen:2026-02-05 15:09:27 UTC
Last seen:2026-02-05 15:25:52 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash e9c0657252137ac61c1eeeba4c021000 (55 x GuLoader, 26 x RedLineStealer, 17 x AgentTesla)
ssdeep 6144:K6dQC6a5KqBFf+hhTGeT7HTl2FV08pGoJPsZWknmwhYPEh:dNBFf+HGsmu8VJ0lmwt
Threatray 2'561 similar samples on MalwareBazaar
TLSH T1D894027367C7ECA7D66505B28CB2ABD023F06F915A41160B3654FA791C322DB860BDCB
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 1100f8f8e8f8f4d8 (5 x RemcosRAT, 2 x GuLoader)
Reporter adrian__luca
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:Styrkelses
Issuer:Styrkelses
Algorithm:sha256WithRSAEncryption
Valid from:2025-12-08T00:32:19Z
Valid to:2026-12-08T00:32:19Z
Serial number: 6c1bfa798779b327da77626ff52cf4473872602b
Thumbprint Algorithm:SHA256
Thumbprint: 5a20f3d764f2e36a4ae6b7f296e41f9095683756359d1d11e6fc726ab5e4ee84
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
2
# of downloads :
126
Origin country :
HU HU
Vendor Threat Intelligence
Malware configuration found for:
NSIS
Details
Link:
https://research.acce.ciphertechsolutions.com/results/f0bac7b7-2471-4923-b753-c678f0fe1ad4/
Malware family:
remcos
Create hunting rule
ID:
1
File name:
f3ef0cc3468403e333638c5e6aad94b99c14cc5f6f864c49bd90a67d0366bc02
Verdict:
Malicious activity
Analysis date:
2026-02-05 16:54:51 UTC
Tags:
remcos rat auto-reg
Link:
https://app.any.run/tasks/e3517356-d9b9-4b43-b93b-9fb9509d1b4c

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/51928/
Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6984b2e8117f8ed80109c6d7
Tags:
injection uloader virus nsis
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/f3ef0cc3468403e333638c5e6aad94b99c14cc5f6f864c49bd90a67d0366bc02
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-01-13T20:43:00Z UTC
Last seen:
2026-02-07T00:44:00Z UTC
Hits:
~1000
Link:
https://opentip.kaspersky.com/f3ef0cc3468403e333638c5e6aad94b99c14cc5f6f864c49bd90a67d0366bc02/results?tab=lookup
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/3fb7f497-7638-4df4-b170-affb49a16f37
Score:
92%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/f3ef0cc3468403e333638c5e6aad94b99c14cc5f6f864c49bd90a67d0366bc02
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/739e07697671b960fdaabca66751e167
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f3ef0cc3468403e333638c5e6aad94b99c14cc5f6f864c49bd90a67d0366bc02/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2026-01-14 03:06:15 UTC
File Type:
PE (Exe)
Extracted files:
12
AV detection:
23 of 36 (63.89%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6pxqzq2gqqb6gm3drrpgvlmuxgobjtc7n6deysn5scth2a3gxqba._file
Verdict:
malicious
Label(s):
cloudeye
Create hunting rule
Similar samples:
0a83a6c897b43357c341190cc93e0310cc8063f4e569853aba1c912ede95229f
GuLoader
5a64a3fd65f7176b7ad623893e3cb573af13eb51850f8243a1951884eee757a9
GuLoader
616ca5c757a9fcf6dce88d1e46e85b233ad05457ae6adfce1b6b53660d496841
GuLoader
7b8d50ac67b2f0de5e35909025cc1a8d15f5edd18675878c7aaa31e3fe83a9fd
GuLoader
b22a56d46d370c28a5eecb4348a56e51f094a4944876ca111e145fcab071743b
GuLoader
ba01c8ea1b44ba28767ffe16338eb1f73b6e4aa8f0370440efa1230aa9e8c2a2
GuLoader
dffefbde27442b9095388b1871ffdc101c430b9a814138be4f962328a5b73fde
GuLoader
error
GuLoader
f2a883a0e4b01c72b0f063df3be5a0102e5c8fbaedc39c8d35c632b200599283
GuLoader
f77c51eef33beedfd0b41c1f02ce5b5bab6499b9242831031906c9d66d331c73
GuLoader
+ 2'551 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos discovery installer persistence rat
Link:
https://tria.ge/reports/260205-sj92dahs9f/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
NSIS installer
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Windows directory
Drops file in System32 directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Adds Run key to start application
Contacts third-party web service commonly abused for C2
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Remcos
Remcos family
Malware Config
C2 Extraction:
107.172.235.204:6000
Unpacked files
SH256 hash:
8d4b1c275fd1cd0782a265080b56d1aec8d1c93edca5ef3b050d1d20d7b61f33
MD5 hash:
6e64e5d5f9498058a300b26b8741d9d5
SHA1 hash:
837ce28e5e02788da63a7f1d8f20207d2b0bf523
Link:
https://www.unpac.me/results/3fd9e990-7293-4cba-beaa-419845a97350/
SH256 hash:
ac9dfe3b35ea4b8932536ed7406c29a432976b685cc5322f94ef93df920fede7
MD5 hash:
0063d48afe5a0cdc02833145667b6641
SHA1 hash:
e7eb614805d183ecb1127c62decb1a6be1b4f7a8
Link:
https://www.unpac.me/results/3fd9e990-7293-4cba-beaa-419845a97350/
Parent samples :
5312214b15330113f6eab71565e1e3c7d1ee3b59daa6703c271aaf3b192e6809
02fca6ef5d9d8b1eb29f7ac8ea0573b504ea7f06c215e091791653b40fe1329a
cc53accc69b32c2507210ea70d1d56aa84dbe354a7f79577df180179ea797427
045a7318a9e2e550208c0c7e9fc805068df19fa73823ac3acaa049a46c4045ee
f2a883a0e4b01c72b0f063df3be5a0102e5c8fbaedc39c8d35c632b200599283
dffefbde27442b9095388b1871ffdc101c430b9a814138be4f962328a5b73fde
e0fb60da371912c158861c9660632d58e45cfcff12351cc9e03f497f319eb5de
904f69a4bed3844273cce1676e8920794815af4c1527e560bbc1bc44b5b8457a
3ab6ed7b7cb21244b34addf64ac6f64b1c38ee98236985511c4af47e8cc93cd4
SH256 hash:
f3ef0cc3468403e333638c5e6aad94b99c14cc5f6f864c49bd90a67d0366bc02
MD5 hash:
739e07697671b960fdaabca66751e167
SHA1 hash:
51c0c7e9196a73d9aef4c42f2fba1e4cb9416cff
Link:
https://www.unpac.me/results/3fd9e990-7293-4cba-beaa-419845a97350/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.52
Link:
https://yomi.yoroi.company/submissions/f3ef0cc3468403e333638c5e6aad94b99c14cc5f6f864c49bd90a67d0366bc02

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:Ins_NSIS_Buer_Nov_2020_1
Create hunting rule
Author:Arkbird_SOLG
Description:Detect NSIS installer used for Buer loader
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.

Cape
Cape
https://www.capesandbox.com/analysis/51928/

Comments