MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 519ab6b3a7f312dd520533bd579b161fd7a0fc7b07204ce22fe3b6279316c0b4. 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 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 519ab6b3a7f312dd520533bd579b161fd7a0fc7b07204ce22fe3b6279316c0b4
SHA3-384 hash: 8fd9fe10b1b86640866209e19ed95033db7fa33bdf84eae0122c23155e010ecc1548559005c27e82c7c1d118ba16fb96
SHA1 hash: d5936424ef94e783abc55c64ebdf5a453fa8aff5
MD5 hash: f4eada0743d985d936f9ba3902a44f20
humanhash: golf-burger-lima-paris
File name:PAYMENT.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:367'248 bytes
First seen:2025-09-25 07:53:15 UTC
Last seen:2025-09-25 12:52:34 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 1f23f452093b5c1ff091a2f9fb4fa3e9 (300 x GuLoader, 46 x VIPKeylogger, 45 x RemcosRAT)
ssdeep 6144:Mp+ggLDjcscp6RWPd2I0MOluXRywdjUu0NBbt1c3kMsKPe+eX/NOLDNb2FMRIizm:M8DtzW8QOQhyDP8Fe+eUeMV2f
Threatray 4'311 similar samples on MalwareBazaar
TLSH T1C3742211A3D1EEA3ED971F3268B306B36A73D8060620550B9F403BBA7C553817D5EBE9
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 c4dadadad2f492c2 (125 x GuLoader, 49 x RemcosRAT, 23 x VIPKeylogger)
Reporter cocaman
Tags:exe GuLoader payment signed

Code Signing Certificate

Organisation:Unformalizeds
Issuer:Unformalizeds
Algorithm:sha256WithRSAEncryption
Valid from:2025-09-20T02:16:01Z
Valid to:2026-09-20T02:16:01Z
Serial number: 08c401a907ec0e187f4dab5884c9d72a0e53a5e7
Thumbprint Algorithm:SHA256
Thumbprint: defb97be761fe5a342c38bf7e62807efe7f76a38868017625a7fadbae4d6e670
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
8
# of downloads :
133
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
8e260384-7f59-43d5-b9d0-1708e0b11dd0.zip
Verdict:
Malicious activity
Analysis date:
2025-09-25 04:21:26 UTC
Tags:
attachments attc-unc susp-attachments arch-email arch-exec
Link:
https://app.any.run/tasks/c2ac9013-e650-426e-b505-9d8ca0e5ff63

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/28940/
Detection(s):
SecuriteInfo.com.Trojan.Inject6.3904.14124.5943.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
95.7%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68d54db91e4783989051eee1
Tags:
uloader virus blic
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a window
Searching for the window
Creating a file in the %AppData% subdirectories
Creating a file
Delayed reading of the file
Unauthorized injection to a recently created process
Restart of the analyzed sample
Launching the default Windows debugger (dwwin.exe)
Verdict:
Unknown
Threat level:
  2.5/10
Confidence:
100%
Tags:
adaptive-context installer masquerade microsoft_visual_cc obfuscated overlay signed
Link:
https://www.filescan.io/uploads/68d4f5bb674d5fd6aa0c2660/reports/b5e5a7bd-38e5-440d-bf83-54dca7e328f7/overview
Verdict:
Malicious
Labled as:
Trojan.Downloader
Link:
https://www.hybrid-analysis.com/sample/519ab6b3a7f312dd520533bd579b161fd7a0fc7b07204ce22fe3b6279316c0b4
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-09-24T21:20:00Z UTC
Last seen:
2025-09-24T21:20:00Z UTC
Hits:
~10000
Link:
https://opentip.kaspersky.com/519ab6b3a7f312dd520533bd579b161fd7a0fc7b07204ce22fe3b6279316c0b4/results?tab=lookup
Malware family:
Unlabeled
Create hunting rule
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/0389f093-abf3-4e29-b827-fc950c84a30c
Result
Threat name:
GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
88 / 100
Link:
https://www.joesandbox.com/analysis/1783817
Signature
AI detected suspicious PE digital signature
Antivirus / Scanner detection for submitted sample
Found direct / indirect Syscall (likely to bypass EDR)
Initial sample is a PE file and has a suspicious name
Multi AV Scanner detection for submitted file
Sample has a suspicious name (potential lure to open the executable)
Switches to a custom stack to bypass stack traces
Tries to detect virtualization through RDTSC time measurements
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
Score:
98%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/519ab6b3a7f312dd520533bd579b161fd7a0fc7b07204ce22fe3b6279316c0b4
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/f4eada0743d985d936f9ba3902a44f20
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/519ab6b3a7f312dd520533bd579b161fd7a0fc7b07204ce22fe3b6279316c0b4/
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Malicious
First seen:
2025-09-24 23:59:56 UTC
File Type:
PE (Exe)
Extracted files:
17
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=kgnlnm5h6mjn2uqfgo6vpgywd7l2b7d3a4qezyrp4o3cpeywyc2a._file
Verdict:
malicious
Label(s):
cloudeye
Create hunting rule
Similar samples:
0c67ccd6b722d25bbe932693afe8d0895555d12442699122c8810d2d6610e2a8
GuLoader
0cb6636748ff6a60ebf1a4644a7b4c877f8a19edd8c7a2eac10b34d1bd7cbfbf
GuLoader
29032ae14e315863a55a0851c3e1c9cb246beb4513a279d8b1bf7fac97be6ff7
GuLoader
2bab4b4ef0cd5ce5f2dff0ddcbdfb7295c0d141fb4c88ec305268b24a3e23a5c
GuLoader
43753d7fe1487c758cfebd575c0818b13ef5c3c278a0fa9539e04fe1a86553eb
GuLoader
55118f31295208ddb2a3e7f18a340056c791d338d8375080cdf618c2bc01bd08
GuLoader
79866667d5cd578a1c6eda54a748ff9d316fff39064eecd282bc2a9ad8a5ac7d
GuLoader
da9c5f609ebbcf19aef3d6992d451ccbe4fa77858660f6861146d1a486e1d98e
GuLoader
ebb0272ecef9d8bf07a71b9ead8718760d27c4fdc334fe2de7a8b93237e61044
GuLoader
error
GuLoader
+ 4'301 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  7/10
Tags:
discovery
Link:
https://tria.ge/reports/250925-jsz34atwby/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Drops file in Windows directory
Suspicious use of NtSetInformationThreadHideFromDebugger
Loads dropped DLL
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/50011797-f095-46f2-8b08-9188b5814c2a
Unpacked files
SH256 hash:
519ab6b3a7f312dd520533bd579b161fd7a0fc7b07204ce22fe3b6279316c0b4
MD5 hash:
f4eada0743d985d936f9ba3902a44f20
SHA1 hash:
d5936424ef94e783abc55c64ebdf5a453fa8aff5
Link:
https://www.unpac.me/results/d1a76bdc-e6c1-4303-bb9d-44be66970c24/
SH256 hash:
a632d74332b3f08f834c732a103dafeb09a540823a2217ca7f49159755e8f1d7
MD5 hash:
75ed96254fbf894e42058062b4b4f0d1
SHA1 hash:
996503f1383b49021eb3427bc28d13b5bbd11977
Link:
https://www.unpac.me/results/d1a76bdc-e6c1-4303-bb9d-44be66970c24/
Malware family:
GuLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/519ab6b3a7f3/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/519ab6b3a7f312dd520533bd579b161fd7a0fc7b07204ce22fe3b6279316c0b4

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:CP_AllMal_Detector
Create hunting rule
Author:DiegoAnalytics
Description:CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication
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

rar 4c4be5c78899709172bae47fa7807afb6100fd30cbbb376f459fe8680780ca88

GuLoader

Executable exe 519ab6b3a7f312dd520533bd579b161fd7a0fc7b07204ce22fe3b6279316c0b4

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 4c4be5c78899709172bae47fa7807afb6100fd30cbbb376f459fe8680780ca88
  
Dropped by
MD5 2c3e5b16b1cb4c1e30e41b05f60fdb7d
Cape
Cape
https://www.capesandbox.com/analysis/28940/

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