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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d39676b463c271335812976f8f3359fbcb353e91715b1fc4f8a7e707ae2b717c. 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


Intelligence 14 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: d39676b463c271335812976f8f3359fbcb353e91715b1fc4f8a7e707ae2b717c
SHA3-384 hash: d5fe0b48db7b33bf9610ac1308d92454bb0785baadc7201d5609636a0acee799afd90b37e1f317b772968b2edc54392b
SHA1 hash: 5e0b8c65f745a6774eace27386400a4da2df7b33
MD5 hash: 8d31bddc25eea2f613c5a677c72ad25c
humanhash: indigo-paris-nuts-earth
File name:d39676b463c271335812976f8f3359fbcb353e91715b1fc4f8a7e707ae2b717c
Download: download sample
Signature GuLoader
Create hunting rule
File size:450'800 bytes
First seen:2026-01-09 15:27:45 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f4639a0b3116c2cfc71144b88a929cfd (145 x GuLoader, 57 x Formbook, 47 x VIPKeylogger)
ssdeep 12288:iXiR7PA9QWY+0dYHCbDqfZeFIWv5pWmoxUj+1tK9Fi/0qdMtUVQtF4oIOZ:iXiR7PA9QWY+0dYHCbDqfZeFIWv5pWmL
Threatray 1'164 similar samples on MalwareBazaar
TLSH T11FA40254BB44D5D3CAA22E304DB5A6739A70BD021E108B832B947F6F2D731D1EF0A765
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 c24e8ce030488ea6 (9 x GuLoader, 3 x VIPKeylogger, 1 x MassLogger)
Reporter adrian__luca
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:Krftknudernes
Issuer:Krftknudernes
Algorithm:sha256WithRSAEncryption
Valid from:2025-11-12T08:08:37Z
Valid to:2026-11-12T08:08:37Z
Serial number: 778ab0bd328b3485407ff4d266d73a800a217ff3
Thumbprint Algorithm:SHA256
Thumbprint: 376029aaca0a97dc394c159cd31f0317b9cd258ba35ca314ea8c79bcd301f065
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
1
# of downloads :
134
Origin country :
HU HU
Vendor Threat Intelligence
Details
Link:
https://research.acce.ciphertechsolutions.com/results/a8d739ad-37ca-400a-8c17-ec5050d4ca91/
Malware family:
n/a
ID:
1
File name:
d39676b463c271335812976f8f3359fbcb353e91715b1fc4f8a7e707ae2b717c
Verdict:
Malicious activity
Analysis date:
2026-01-09 12:37:29 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/4b2c1518-04fa-45ff-9bc0-e1c69872ae83

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/48347/
Verdict:
Malicious
Score:
90.2%
Link:
https://cyber-fortress.com/docs/result/index.php?id=69611f5af50945831dff4f3d
Tags:
injection injector virus
Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% subdirectories
Searching for the window
DNS request
Connection attempt
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug blackhole guloader installer installer installer-heuristic microsoft_visual_cc nsis overlay signed
Link:
https://www.filescan.io/uploads/69611f6207ef5fa68e82d715/reports/9fd88630-dfef-4619-87e3-06bed448b75f/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/d39676b463c271335812976f8f3359fbcb353e91715b1fc4f8a7e707ae2b717c
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-12-08T09:52:00Z UTC
Last seen:
2026-01-10T18:31:00Z UTC
Hits:
~1000
Link:
https://opentip.kaspersky.com/d39676b463c271335812976f8f3359fbcb353e91715b1fc4f8a7e707ae2b717c/results?tab=lookup
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/6918550d-bf3b-4692-9271-d45b375177c0
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/d39676b463c271335812976f8f3359fbcb353e91715b1fc4f8a7e707ae2b717c
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/8d31bddc25eea2f613c5a677c72ad25c
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/d39676b463c271335812976f8f3359fbcb353e91715b1fc4f8a7e707ae2b717c/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2025-12-08 13:27:04 UTC
File Type:
PE (Exe)
Extracted files:
20
AV detection:
18 of 36 (50.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=2olhnnddyjytgwass5xy6m2z7pftkpurofnr7rhyu7tqplrlof6a._file
Verdict:
malicious
Label(s):
cloudeye
Create hunting rule
Similar samples:
0870b3b67d44605370d4dfdec793ac8924ae38484ad5fdc1ba030b975c98fb5b
GuLoader
4343b00235c1e77857dcca397a8137c0cc66fbc0bd01f64e161c4b478afb69a2
GuLoader
7af79e693a5a73f15752047d30bb1feb361dfd220afe86db18418fe55b67caca
GuLoader
83ee816656bb2da47c426ac500d2b0c493285befc4db275901c2deaa8e34c7d6
GuLoader
c1790c2c353fc581c2cc4e8c6378cd1ea396229b96e0a243cdcaf01909d86052
GuLoader
cbee023c5bf4429139e4890715b1364dfff7d55f3cc400b594274888d3b6122d
GuLoader
d544e7d6a76b2df6b7980d6f55307464ff3baebfdc6c6e1bc03e6986210f9901
GuLoader
dd166e9e38e6e15bd679f7db9c7c0eb875358174de748eef5d61770f42b4192f
GuLoader
eb8c28502a98d9bab6edf47041a6483cf290192d0baf7557d84da9daeb6e625c
GuLoader
error
GuLoader
+ 1'154 additional samples on MalwareBazaar
Result
Malware family:
vipkeylogger
Create hunting rule
Score:
  10/10
Tags:
family:vipkeylogger collection discovery keylogger spyware stealer
Link:
https://tria.ge/reports/260109-sxesdsgw6f/
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 Windows directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Accesses Microsoft Outlook profiles
Contacts third-party web service commonly abused for 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
VIPKeylogger
Vipkeylogger family
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/7ff45fe4-d41a-416d-80e0-02dcf1233dc0
Unpacked files
SH256 hash:
d39676b463c271335812976f8f3359fbcb353e91715b1fc4f8a7e707ae2b717c
MD5 hash:
8d31bddc25eea2f613c5a677c72ad25c
SHA1 hash:
5e0b8c65f745a6774eace27386400a4da2df7b33
Link:
https://www.unpac.me/results/7d764d8f-3d16-4067-afed-b87f845509b1/
SH256 hash:
23d618a0293c78ce00f7c6e6dd8b8923621da7dd1f63a070163ef4c0ec3033d6
MD5 hash:
192639861e3dc2dc5c08bb8f8c7260d5
SHA1 hash:
58d30e460609e22fa0098bc27d928b689ef9af78
Link:
https://www.unpac.me/results/7d764d8f-3d16-4067-afed-b87f845509b1/
SH256 hash:
89a82c4849c21dfe765052681e1fad02d2d7b13c8b5075880c52423dca72a912
MD5 hash:
b7d61f3f56abf7b7ff0d4e7da3ad783d
SHA1 hash:
15ab5219c0e77fd9652bc62ff390b8e6846c8e3e
Link:
https://www.unpac.me/results/7d764d8f-3d16-4067-afed-b87f845509b1/
Malware family:
GuLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/d39676b463c2/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/d39676b463c271335812976f8f3359fbcb353e91715b1fc4f8a7e707ae2b717c

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.

Cape
Cape
https://www.capesandbox.com/analysis/48347/

Comments