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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f58c14370ca887ef557112732534fa842b8e443719285a962f1a4d66400a7123. 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: 15


Intelligence 15 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f58c14370ca887ef557112732534fa842b8e443719285a962f1a4d66400a7123
SHA3-384 hash: b3159ebef23a979044faab70f164c8a207b3df38feb46cd2272b4dd232f361e01dbfa8752b13ec79353cd578fc04c9fb
SHA1 hash: 20a1b6463a9f57b58a89995c193c391dcb1faef9
MD5 hash: fe5569462d9ca145f78bc520e1e9a53e
humanhash: music-colorado-comet-apart
File name:rFactura-11-03-25-00000118.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:663'032 bytes
First seen:2025-12-03 02:00:06 UTC
Last seen:2025-12-08 14:01:29 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash b78ecf47c0a3e24a6f4af114e2d1f5de (310 x GuLoader, 23 x Formbook, 21 x RemcosRAT)
ssdeep 12288:9kTBokdIW//D6gMx1ySwExWKVMPI+SOUe9c+mCJD9EHezRH++Sq9:+tNdIW/r6gMxzwExWWk59c+rJREHep7B
Threatray 3'196 similar samples on MalwareBazaar
TLSH T19CE401C2B250E426F3CB10B0D1BA9DFADA796DD9E48747176601BF7E39332A2401974B
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 78c98c8cdedc78b6 (2 x GuLoader, 1 x VIPKeylogger)
Reporter FXOLabs
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:Glycerinating
Issuer:Glycerinating
Algorithm:sha256WithRSAEncryption
Valid from:2025-10-23T06:41:03Z
Valid to:2026-10-23T06:41:03Z
Serial number: 61d2749348f746c71e23abd10d11cfaf99f5c0b8
Thumbprint Algorithm:SHA256
Thumbprint: 34b9082a7a97796bc836a2931989df62f0ed264c2966459d04210475e710aa47
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
2
# of downloads :
163
Origin country :
US US
Vendor Threat Intelligence
Malware configuration found for:
NSIS
Details
Link:
https://research.acce.ciphertechsolutions.com/results/c3d2934e-78b6-4aff-a9f8-2316e44194e3/
Malware family:
n/a
ID:
1
File name:
rFactura-11-03-25-00000118.exe
Verdict:
Malicious activity
Analysis date:
2025-12-03 02:02:04 UTC
Tags:
evasion snake keylogger telegram stealer
Link:
https://app.any.run/tasks/985b14ca-6449-428f-b71c-b262fcee92a9

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/42193/
Detection(s):
SecuriteInfo.com.Trojan.DownLoad4.12041.10.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
90.2%
Link:
https://cyber-fortress.com/docs/result/index.php?id=692f99c7264b106bd6462fa5
Tags:
injection obfusc virus
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% subdirectories
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
adaptive-context anti-debug blackhole installer installer installer-heuristic masquerade microsoft_visual_cc nsis overlay signed
Link:
https://www.filescan.io/uploads/692f99c0979e53a83592b12e/reports/59ce75d0-266f-4d3a-b52d-8c84037a0f57/overview
Verdict:
Malicious
Labled as:
Malware_54.7
Link:
https://www.hybrid-analysis.com/sample/f58c14370ca887ef557112732534fa842b8e443719285a962f1a4d66400a7123
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-12-02T19:42:00Z UTC
Last seen:
2025-12-04T18:35:00Z UTC
Hits:
~1000
Detections:
VHO:Trojan-Dropper.NSIS.Convagent.gen HEUR:Trojan-Dropper.NSIS.Agent.gen HEUR:Trojan.Win32.Agent.gen Trojan.Win32.Guloader.sb Trojan.NSIS.Makoob.sba HEUR:Trojan-Dropper.NSIS.Convagent.gen HEUR:Trojan.Win32.Sdum.gen
Link:
https://opentip.kaspersky.com/f58c14370ca887ef557112732534fa842b8e443719285a962f1a4d66400a7123/results?tab=lookup
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/9e72849d-fd1e-43dc-81db-29e3779c855d
Score:
86%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/f58c14370ca887ef557112732534fa842b8e443719285a962f1a4d66400a7123
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/fe5569462d9ca145f78bc520e1e9a53e
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f58c14370ca887ef557112732534fa842b8e443719285a962f1a4d66400a7123/
Verdict:
Malicious
Threat:
Family.SNAKE
Link:
https://tip.neiki.dev/file/f58c14370ca887ef557112732534fa842b8e443719285a962f1a4d66400a7123
Threat name:
Win32.Trojan.GuLoader
Create hunting rule
Status:
Malicious
First seen:
2025-12-03 01:07:47 UTC
File Type:
PE (Exe)
Extracted files:
20
AV detection:
12 of 24 (50.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6wgbinymvcd66vlrcjzsknh2qqvy4rbxdeufvfrpdjgwmqakoerq._file
Verdict:
malicious
Label(s):
cloudeye
Create hunting rule
Similar samples:
1273c78b4f196fc982cb1e9b7abe9d2b5c4f10c5486e7a891615bb273fef419d
GuLoader
35e4927ea02978e01bee3917c5c2c92d46308473bf3eaf4ef1d4d3c0eb0a0d4f
GuLoader
4c614a69aebe97562d09c05c5b08db70ba7cba08f6698e5a87fc85407e2fb940
GuLoader
546ae43962598c24a6fce4234cf6134daef5c4e1f4090a0baa37362682e4aae8
GuLoader
861f5a47b316a7668eedc2c5b7f7780406735223bd41a2a29f5df29331f7e51f
GuLoader
a5c940653c3b19cacd1378f2081feb377f2791257fbef36cd64df3a0b1b7d4b4
GuLoader
b1a79901deb8e3bb861bfe4126bcebb51e1effaa8bacd227a4372b9ea77205ee
GuLoader
dcb25316bc3b1978f4acb2cce9804787843d832b46939195550ccdfc2f7f947c
GuLoader
error
GuLoader
+ 3'186 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  7/10
Tags:
discovery installer
Link:
https://tria.ge/reports/251203-cfajcatlcj/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of NtSetInformationThreadHideFromDebugger
Legitimate hosting services abused for malware hosting/C2
Loads dropped DLL
Verdict:
Suspicious
Tags:
loader guloader
YARA:
NSIS_GuLoader_July_2024
Link:
https://app.threat.zone/submission/92583806-81f1-4ed9-849b-d0d6d5ebc752
Unpacked files
SH256 hash:
f58c14370ca887ef557112732534fa842b8e443719285a962f1a4d66400a7123
MD5 hash:
fe5569462d9ca145f78bc520e1e9a53e
SHA1 hash:
20a1b6463a9f57b58a89995c193c391dcb1faef9
Link:
https://www.unpac.me/results/2d397252-df94-4d7a-937b-158ced950871/
SH256 hash:
681382f3134de5c6272a49dd13651c8c201b89c247b471191496e7335702fa59
MD5 hash:
2ae993a2ffec0c137eb51c8832691bcb
SHA1 hash:
98e0b37b7c14890f8a599f35678af5e9435906e1
Link:
https://www.unpac.me/results/2d397252-df94-4d7a-937b-158ced950871/
SH256 hash:
cb958e21c3935ef7697a2f14d64cae0f9264c91a92d2deeb821ba58852dac911
MD5 hash:
13b6a88cf284d0f45619e76191e2b995
SHA1 hash:
09ebb0eb4b1dca73d354368414906fc5ad667e06
Link:
https://www.unpac.me/results/2d397252-df94-4d7a-937b-158ced950871/
Malware family:
GuLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/f58c14370ca8/report/overview.html
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/f58c14370ca887ef557112732534fa842b8e443719285a962f1a4d66400a7123

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_SliverFox_String
Create hunting rule
Author:huoji
Description:Detect files is `SliverFox` malware
Rule name:FreddyBearDropper
Create hunting rule
Author:Dwarozh Hoshiar
Description:Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.
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.

Malspam

GuLoader

Executable exe f58c14370ca887ef557112732534fa842b8e443719285a962f1a4d66400a7123

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/42193/

Comments