MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cd9b8405e09bed643ec9f4310de2d377b0d686da1dda72bfb7953cda26024868. 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: 16


Intelligence 16 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: cd9b8405e09bed643ec9f4310de2d377b0d686da1dda72bfb7953cda26024868
SHA3-384 hash: a4e46bddc16e10fae4420a7181a02f7aa970119af593b87bad6eca3e51aa48ef235fc8e49a39c578096688132049fd82
SHA1 hash: 5b5315a79eb6ad3e02d5b8f37010e47863e2f7b8
MD5 hash: 3938b1883704e471449f398b59135842
humanhash: charlie-lima-december-saturn
File name:FACTURA_Nº_2250826.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:392'056 bytes
First seen:2026-05-20 17:07:34 UTC
Last seen:2026-05-20 18:14:53 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 4ea4df5d94204fc550be1874e1b77ea7 (253 x GuLoader, 32 x RemcosRAT, 26 x VIPKeylogger)
ssdeep 6144:fB+pgUDTo+3SN4sMTn8MLLo/gLgQ4U9DL/ku14/ZdFg/gK5Pm/2rQfvMQ9:fgbttsMgMLM/gpL/kuGZHCRm/2ry9
TLSH T15384E12575B4D41BFD3649F04C53CA3535BABE343A121D53ADC0379EAE326D3BA28A12
TrID 50.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
10.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
10.5% (.EXE) Win64 Executable (generic) (6522/11/2)
8.1% (.EXE) Win16 NE executable (generic) (5038/12/1)
7.2% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
dhash icon f2fef67e6e7e6e60 (2 x GuLoader)
Reporter TomU
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:Konsignerede
Issuer:Konsignerede
Algorithm:sha256WithRSAEncryption
Valid from:2025-11-24T00:10:52Z
Valid to:2026-11-24T00:10:52Z
Serial number: 1eb81e75cb4030c9e90292df40378d1ad84e3cd8
Thumbprint Algorithm:SHA256
Thumbprint: 37481242e1717c41449053e47db82a7c69ac25b927fffd1b86331a428cb9ce32
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
2
# of downloads :
83
Origin country :
CH CH
Vendor Threat Intelligence
Malware configuration found for:
GuLoader NSIS
Details
GuLoader
an XOR decryption key and an extracted component
GuLoader
a c2 URL, a useragent string, and a string XOR key
NSIS
extracted archive contents
Link:
https://research.acce.ciphertechsolutions.com/results/7dba0077-0798-4d9a-8f51-a3dbdfee7f99/
Malware family:
guloader
Create hunting rule
ID:
1
File name:
FACTURA_N_2250826.exe
Verdict:
Malicious activity
Analysis date:
2026-05-20 17:20:10 UTC
Tags:
guloader
Link:
https://app.any.run/tasks/3b1307c6-7f08-48ae-a493-4867cc29e465

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/66776/
Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6a0ded4a4f2b29ce0401e67d
Tags:
injection virus blic
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a file
Searching for the window
Сreating synchronization primitives
Creating a file in the Windows subdirectories
Creating a file in the %AppData% subdirectories
Creating a window
Delayed reading of the file
Unauthorized injection to a recently created process
Creating a process from a recently created file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug installer installer installer-heuristic masquerade microsoft_visual_cc nsis reconnaissance signed
Link:
https://www.filescan.io/uploads/6a0dedf378f38c56ac73f16d/reports/e6f2824e-684d-4f16-9f4b-dbeb48b74ba9/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/cd9b8405e09bed643ec9f4310de2d377b0d686da1dda72bfb7953cda26024868
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-12-01T07:25:00Z UTC
Last seen:
2026-05-18T10:00:00Z UTC
Hits:
~1000
Detections:
VHO:Trojan.NSIS.Makoob.gen Trojan.NSIS.Makoob.sbb Trojan.NSIS.Makoob.sba HEUR:Trojan.Win32.Makoob.gen
Link:
https://opentip.kaspersky.com/cd9b8405e09bed643ec9f4310de2d377b0d686da1dda72bfb7953cda26024868/results?tab=lookup
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/df7150fb-9d17-4e86-b766-d53f7a96a3ef
Score:
96%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/cd9b8405e09bed643ec9f4310de2d377b0d686da1dda72bfb7953cda26024868
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/cd9b8405e09bed643ec9f4310de2d377b0d686da1dda72bfb7953cda26024868/
Verdict:
Malicious
Threat:
Family.GULOADER
Link:
https://tip.neiki.dev/file/cd9b8405e09bed643ec9f4310de2d377b0d686da1dda72bfb7953cda26024868
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2025-12-01 10:29:14 UTC
File Type:
PE (Exe)
Extracted files:
19
AV detection:
16 of 36 (44.44%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=zwnyibpatpwwipwj6qyq3ywto6ynnbw2dxnhfp5xsu6nujqcjbua._file
Result
Malware family:
guloader
Create hunting rule
Score:
  10/10
Tags:
family:guloader discovery downloader
Link:
https://tria.ge/reports/260520-vn28faew8r/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Drops file in Windows directory
Drops file in System32 directory
Suspicious use of NtSetInformationThreadHideFromDebugger
Loads dropped DLL
Family: Guloader,Cloudeye
Unpacked files
SH256 hash:
cd9b8405e09bed643ec9f4310de2d377b0d686da1dda72bfb7953cda26024868
MD5 hash:
3938b1883704e471449f398b59135842
SHA1 hash:
5b5315a79eb6ad3e02d5b8f37010e47863e2f7b8
Link:
https://www.unpac.me/results/93ddef95-2fc2-46bc-8d5d-af9498149c44/
SH256 hash:
2e226715419a5882e2e14278940ee8ef0aa648a3ef7af5b3dc252674111962bc
MD5 hash:
a4dd044bcd94e9b3370ccf095b31f896
SHA1 hash:
17c78201323ab2095bc53184aa8267c9187d5173
Link:
https://www.unpac.me/results/93ddef95-2fc2-46bc-8d5d-af9498149c44/
Malware family:
GuLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/cd9b8405e09b/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/cd9b8405e09bed643ec9f4310de2d377b0d686da1dda72bfb7953cda26024868

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
Rule name:VECT_Ransomware
Create hunting rule
Author:Mustafa Bakhit
Description:Detects activity associated with VECT ransomware. This includes registry modifications and deletions, execution of system and defense-evasion commands, suspicious API usage, mutex creation, file and memory manipulation, ransomware note generation, anti-debugging and anti-analysis techniques, and embedded cryptographic constants (SHA256) characteristic of this malware family. Designed for threat intelligence and malware detection environments.

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

GuLoader

Executable exe cd9b8405e09bed643ec9f4310de2d377b0d686da1dda72bfb7953cda26024868

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/66776/

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