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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c12a1b39a379333a188cae48cabda5eaecfed024220bf6495aca025498d6c0fd. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c12a1b39a379333a188cae48cabda5eaecfed024220bf6495aca025498d6c0fd
SHA3-384 hash: 0b20ace1e6ea97594c3fd92277647ecf98b1b8f202f1b86be9b0fc6f7b2b53f84186aa79d8bb55b1e5a2831efe78225a
SHA1 hash: e3e4071e0b7f62d909e1e2a20856a52661a69633
MD5 hash: 8f52e3cd74064d5bbc04df77135045a7
humanhash: bravo-florida-kentucky-quebec
File name:c12a1b39a379333a188cae48cabda5eaecfed024220bf6495aca025498d6c0fd
Download: download sample
Signature GuLoader
Create hunting rule
File size:1'032'992 bytes
First seen:2025-10-09 15:15:30 UTC
Last seen:2025-11-06 10:06:35 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash e9c0657252137ac61c1eeeba4c021000 (55 x GuLoader, 26 x RedLineStealer, 17 x AgentTesla)
ssdeep 24576:2CoxaA7Ad3j/vF07FH0HW0zK8tvNI52Dr7fpq1Z:Y8A7Ad3j/iyplTr7cZ
Threatray 1'943 similar samples on MalwareBazaar
TLSH T111252396279062DAD4960932D236D7B867A4FC26496203ABFB503FFBFE74743B512043
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 8af2ecfcfcf8d494 (5 x GuLoader, 3 x VIPKeylogger)
Reporter adrian__luca
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:Ubarmhjertigheders
Issuer:Ubarmhjertigheders
Algorithm:sha256WithRSAEncryption
Valid from:2025-08-08T02:34:39Z
Valid to:2026-08-08T02:34:39Z
Serial number: 597392fdc7b123d4b03d225ccf49db5da3962715
Thumbprint Algorithm:SHA256
Thumbprint: 6bf23fe8389e8aa179a883260228fd54665c56634ce6a2189b6f84ae987d9ef1
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
2
# of downloads :
113
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
guloader
Create hunting rule
ID:
1
File name:
30092025_1724_29092025_factura_2404047141_2025-08-17T02_00.rar
Verdict:
Malicious activity
Analysis date:
2025-10-09 15:26:42 UTC
Tags:
arch-exec guloader evasion snake keylogger telegram stealer
Link:
https://app.any.run/tasks/94979663-e939-4489-a48e-3e7f9156bc01

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/31910/
Verdict:
Malicious
Score:
95.7%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68e7d4c38b7b147cc4b634f2
Tags:
injection uloader virus nsis
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Searching for the window
Creating a file in the Windows directory
Creating a file
Delayed reading of the file
Creating a file in the %temp% subdirectories
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
adaptive-context installer microsoft_visual_cc obfuscated overlay signed
Link:
https://www.filescan.io/uploads/68e7f50b7c75fa33a278b5e4/reports/fd7b8819-4412-46b4-a879-30f643cf64ba/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/c12a1b39a379333a188cae48cabda5eaecfed024220bf6495aca025498d6c0fd
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-09-29T05:57:00Z UTC
Last seen:
2025-10-09T12:00:00Z UTC
Hits:
~1000
Detections:
HEUR:Trojan.Win32.GuLoader.gen Trojan.NSIS.Pakes.Krynis.sb Trojan.Win32.Guloader.sb Trojan.NSIS.Makoob.sba Packed.NSIS.Krynis.sb
Link:
https://opentip.kaspersky.com/c12a1b39a379333a188cae48cabda5eaecfed024220bf6495aca025498d6c0fd/results?tab=lookup
Malware family:
Unlabeled
Create hunting rule
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/b44c4e95-4442-4363-a539-987bdb7a8e79
Score:
86%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/c12a1b39a379333a188cae48cabda5eaecfed024220bf6495aca025498d6c0fd
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/8f52e3cd74064d5bbc04df77135045a7
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c12a1b39a379333a188cae48cabda5eaecfed024220bf6495aca025498d6c0fd/
Threat name:
Win32.Trojan.GuLoader
Create hunting rule
Status:
Malicious
First seen:
2025-09-29 09:03:11 UTC
File Type:
PE (Exe)
Extracted files:
13
AV detection:
15 of 24 (62.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yevbwondpeztugemvzemvpnf5lwp5ubeeif7msk2zibfjggwyd6q._file
Verdict:
malicious
Label(s):
cloudeye
Create hunting rule
Similar samples:
2be5b104a63deb6addd9d49ffea10cfbefc8c214c2578f4554b6272ca3856899
GuLoader
55d8dc6d475a919fe7ec17bd2575cf0f0a1eec913dba89f9556b69621eec0eb6
GuLoader
5dfcdc1c491fbf2f7f2fbac6bbf27b84be652583b66b252c46e8ed86577c3c60
GuLoader
67fd31f9b85ca5e31e0851c8a5f8f2f36343d884aa3dd7f26d4aa6c5d02b28fe
GuLoader
93101edd7f3781a78fe84f01fdee0f9823108ae652bb79ddf794e02874783080
GuLoader
a84ca870d39bdf7c8262813d823739588e127efda4373dc6f683225850e2969c
GuLoader
b6547a4bd6e07503eb5519a562621d0c8c8280d4f4e6973f7486c4d6ac78530f
GuLoader
c4c3a77f7a3684e842de579f220da42d8fca0670991adbf1a8100b44870ba20a
GuLoader
dd6d8363c2761f77948a54be192dbbe563d2da9dd8f922102547631ccbd05ebb
GuLoader
error
GuLoader
+ 1'933 additional samples on MalwareBazaar
Result
Malware family:
vipkeylogger
Create hunting rule
Score:
  10/10
Tags:
family:guloader family:vipkeylogger collection discovery downloader installer keylogger spyware stealer
Link:
https://tria.ge/reports/251009-v7zxeshl5w/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Browser Information Discovery
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Drops file in Windows directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Accesses Microsoft Outlook profiles
Legitimate hosting services abused for malware hosting/C2
Looks up external IP address via web service
Loads dropped DLL
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Guloader family
Guloader,Cloudeye
VIPKeylogger
Vipkeylogger family
Verdict:
Suspicious
Tags:
loader guloader
YARA:
NSIS_GuLoader_July_2024
Link:
https://app.threat.zone/submission/a6acb472-41df-43fe-91f9-986941ff42f7
Unpacked files
SH256 hash:
c12a1b39a379333a188cae48cabda5eaecfed024220bf6495aca025498d6c0fd
MD5 hash:
8f52e3cd74064d5bbc04df77135045a7
SHA1 hash:
e3e4071e0b7f62d909e1e2a20856a52661a69633
Link:
https://www.unpac.me/results/e8195676-b8e0-4a32-bf3d-e416c7603d49/
SH256 hash:
8d4b1c275fd1cd0782a265080b56d1aec8d1c93edca5ef3b050d1d20d7b61f33
MD5 hash:
6e64e5d5f9498058a300b26b8741d9d5
SHA1 hash:
837ce28e5e02788da63a7f1d8f20207d2b0bf523
Link:
https://www.unpac.me/results/e8195676-b8e0-4a32-bf3d-e416c7603d49/
SH256 hash:
ac9dfe3b35ea4b8932536ed7406c29a432976b685cc5322f94ef93df920fede7
MD5 hash:
0063d48afe5a0cdc02833145667b6641
SHA1 hash:
e7eb614805d183ecb1127c62decb1a6be1b4f7a8
Link:
https://www.unpac.me/results/e8195676-b8e0-4a32-bf3d-e416c7603d49/
Parent samples :
5312214b15330113f6eab71565e1e3c7d1ee3b59daa6703c271aaf3b192e6809
02fca6ef5d9d8b1eb29f7ac8ea0573b504ea7f06c215e091791653b40fe1329a
cc53accc69b32c2507210ea70d1d56aa84dbe354a7f79577df180179ea797427
045a7318a9e2e550208c0c7e9fc805068df19fa73823ac3acaa049a46c4045ee
f2a883a0e4b01c72b0f063df3be5a0102e5c8fbaedc39c8d35c632b200599283
dffefbde27442b9095388b1871ffdc101c430b9a814138be4f962328a5b73fde
e0fb60da371912c158861c9660632d58e45cfcff12351cc9e03f497f319eb5de
904f69a4bed3844273cce1676e8920794815af4c1527e560bbc1bc44b5b8457a
3ab6ed7b7cb21244b34addf64ac6f64b1c38ee98236985511c4af47e8cc93cd4
Please note that we are no longer able to provide a coverage score for Virus Total.

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/31910/

Comments