MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8bda7db9909e9b4e6bbb325102bae2639f622cf3d895e1b500f7a02cfd21608d. 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 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8bda7db9909e9b4e6bbb325102bae2639f622cf3d895e1b500f7a02cfd21608d
SHA3-384 hash: 37550883cb23f6fba2e4d083a7da53b8a5a1b32afc8f22ce9284872547fe5508cdd7004451b5c601b4962488569d2628
SHA1 hash: 9f70c4d1ab267ffc886ca66f1d46e51b43c393a6
MD5 hash: eaccbc831b2fc77bdcd8eb19f5f3dee1
humanhash: foxtrot-mike-eight-florida
File name:Faktura - F260021.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:180'456 bytes
First seen:2026-06-23 08:25:13 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 46ce5c12b293febbeb513b196aa7f843 (37 x GuLoader, 21 x RemcosRAT, 9 x AgentTesla)
ssdeep 3072:blnffjVrwUak7uVPvA5fCDlS2wpjJYrQFCIikHOlSE5i/4xhQRZKXGfJI1ok:blnhrwtVPvOKDo2wjrTikHE5vxiKXGfU
TLSH T12B04F15532A0C863D6E206701E765AF6EABF9D511594030B6F283FAB7D335B2810F793
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 d022d8c8f28f80c0 (40 x GuLoader, 12 x VIPKeylogger, 6 x Formbook)
Reporter Anonymous
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:Mavelandede
Issuer:Mavelandede
Algorithm:sha256WithRSAEncryption
Valid from:2026-05-07T08:09:54Z
Valid to:2027-05-07T08:09:54Z
Serial number: 6cd9daa9fbf6108371dd83762b425624b0084a21
Thumbprint Algorithm:SHA256
Thumbprint: 60aeafee17922c5f872690703fcb11b38b7f9b8a35f56a9dee9b7fdc190ba061
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
1
# of downloads :
167
Origin country :
PL PL
Vendor Threat Intelligence
Malware configuration found for:
NSIS
Details
Link:
https://research.acce.ciphertechsolutions.com/results/e2062f5b-421e-4f7d-b994-5cf137b67a86/
Malware family:
n/a
ID:
1
File name:
Faktura - F260021.exe
Verdict:
Malicious activity
Analysis date:
2026-06-23 08:27:23 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/d6887dc1-3038-420f-9f59-b97aa86b2b54

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Guloader
Create hunting rule
Link:
https://www.capesandbox.com/analysis/71652/
Detection(s):
SecuriteInfo.com.FileRepMalware.22591527.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
81.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6a3a430086bc95245bf8d843
Tags:
injection obfusc crypt
Result
Verdict:
Suspicious
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a file in the %AppData% subdirectories
Creating a file
Delayed reading of the file
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
DNS request
Connection attempt
Sending a custom TCP request
Sending an HTTP GET request
Сreating synchronization primitives
Verdict:
Unknown
Threat level:
  2.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug base64 evasive installer installer installer-heuristic microsoft_visual_cc nsis reconnaissance signed
Link:
https://www.filescan.io/uploads/6a3a42fc90632a45f73525fb/reports/393be109-43cf-4d7e-853b-86b849f8f298/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/8bda7db9909e9b4e6bbb325102bae2639f622cf3d895e1b500f7a02cfd21608d
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-06-23T04:51:00Z UTC
Last seen:
2026-06-24T05:31:00Z UTC
Hits:
~1000
Detections:
Trojan.Win32.Guloader.sb Trojan.NSIS.Makoob.sba Trojan-Downloader.Win32.Minix.sb Trojan-Downloader.Win32.Minix.cwu
Link:
https://opentip.kaspersky.com/8bda7db9909e9b4e6bbb325102bae2639f622cf3d895e1b500f7a02cfd21608d/results?tab=lookup
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/8e660f5b-f3b6-44e8-8110-b882dbbc31fe
Result
Threat name:
FormBook, GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1932437
Signature
AI detected suspicious PE digital signature
Antivirus detection for URL or domain
Found direct / indirect Syscall (likely to bypass EDR)
Hides threads from debuggers
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
Tries to detect virtualization through RDTSC time measurements
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Unusual module load detection (module proxying)
Yara detected FormBook
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1932437 Sample: Faktura - F260021.exe Startdate: 23/06/2026 Architecture: WINDOWS Score: 100 39 www.wellog.xyz 2->39 41 www.trainefy.app 2->41 43 26 other IPs or domains 2->43 61 Suricata IDS alerts for network traffic 2->61 63 Antivirus detection for URL or domain 2->63 65 Multi AV Scanner detection for submitted file 2->65 69 6 other signatures 2->69 11 Faktura - F260021.exe 41 2->11         started        signatures3 67 Performs DNS queries to domains with low reputation 39->67 process4 file5 37 C:\Users\user\AppData\Local\...\System.dll, PE32 11->37 dropped 79 Hides threads from debuggers 11->79 81 Found direct / indirect Syscall (likely to bypass EDR) 11->81 15 Faktura - F260021.exe 6 11->15         started        19 Faktura - F260021.exe 11->19         started        signatures6 process7 dnsIp8 51 drive.usercontent.google.com 192.178.164.132, 443, 49704 GOOGLE-GoogleLLCUS United States 15->51 53 drive.google.com 192.178.164.139, 443, 49702 GOOGLE-GoogleLLCUS United States 15->53 55 Maps a DLL or memory area into another process 15->55 57 Hides threads from debuggers 15->57 59 Found direct / indirect Syscall (likely to bypass EDR) 15->59 21 1b6UPAlz8w7mwb.exe 15->21 injected 23 Faktura - F260021.exe 15->23         started        signatures9 process10 process11 25 find.exe 13 21->25         started        signatures12 71 Tries to steal Mail credentials (via file / registry access) 25->71 73 Tries to harvest and steal browser information (history, passwords, etc) 25->73 75 Modifies the context of a thread in another process (thread injection) 25->75 77 4 other signatures 25->77 28 gkF7IyKnRH.exe 25->28 injected 31 chrome.exe 25->31         started        33 firefox.exe 25->33         started        process13 dnsIp14 45 sjans.ca 108.167.158.166, 49728, 49729, 49730 ORACLE-BMC-31898-OracleCorporationUS United States 28->45 47 www.wellog.xyz 159.198.77.50, 49732, 49733, 49734 NAMECHEAP-NET-NamecheapIncUS United States 28->47 49 9 other IPs or domains 28->49 35 WerFault.exe 4 31->35         started        process15
Score:
96%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/8bda7db9909e9b4e6bbb325102bae2639f622cf3d895e1b500f7a02cfd21608d
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8bda7db9909e9b4e6bbb325102bae2639f622cf3d895e1b500f7a02cfd21608d/
Verdict:
Malicious
Threat:
Family.FORMBOOK
Link:
https://tip.neiki.dev/file/8bda7db9909e9b4e6bbb325102bae2639f622cf3d895e1b500f7a02cfd21608d
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rpnh3omqt2nu4253gjiqfoxcmopwelht3ck6dnia66qcz7jbmcgq._file
Verdict:
malicious
Label(s):
cloudeye
Create hunting rule
Similar samples:
error
GuLoader
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/260623-kbkgrabs9j/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Contacts third-party web service commonly abused for C2
Loads dropped DLL
Family: Formbook
Formbook payload
Unpacked files
SH256 hash:
8bda7db9909e9b4e6bbb325102bae2639f622cf3d895e1b500f7a02cfd21608d
MD5 hash:
eaccbc831b2fc77bdcd8eb19f5f3dee1
SHA1 hash:
9f70c4d1ab267ffc886ca66f1d46e51b43c393a6
Link:
https://www.unpac.me/results/5954ffd5-dbb2-4489-8c1a-fb631085ceca/
SH256 hash:
996645d7f16a6294babb6da83478062aed7b72318d7a51b66e90ab5d3edc51a5
MD5 hash:
6d08f0d5503bb100b8429fefaad163a6
SHA1 hash:
2a79aac2d3b715326c3dcd3c5cf2e33de3632a0a
Link:
https://www.unpac.me/results/5954ffd5-dbb2-4489-8c1a-fb631085ceca/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/8bda7db9909e/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/8bda7db9909e9b4e6bbb325102bae2639f622cf3d895e1b500f7a02cfd21608d

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_detect_tls_callbacks
Create hunting rule
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
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.

Cape
Cape
https://www.capesandbox.com/analysis/71652/

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