MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f2b345fcebcd9ed2e342399cfe9819abee7c3642efb6279ad3b4c940555d4564. 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: 9


Intelligence 9 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f2b345fcebcd9ed2e342399cfe9819abee7c3642efb6279ad3b4c940555d4564
SHA3-384 hash: 08983792a9826b684a9aa96a5862910be18a63a1fa058f8e42883cc7bf77c00797a31b4247877508ce0700852658e4e8
SHA1 hash: 09468febd4a58cbc0936570317e9b7bf7d654143
MD5 hash: 7770760fd67b4ec881c0fe317c9a400e
humanhash: montana-spaghetti-alanine-sink
File name:zamów numer 111-6655.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:1'784'040 bytes
First seen:2024-02-20 07:09:04 UTC
Last seen:2024-07-25 02:15:25 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 3abe302b6d9a1256e6a915429af4ffd2 (271 x GuLoader, 38 x Formbook, 25 x Loki)
ssdeep 49152:txAr7f9JvhGTP+2Nv4JVClDq0LvoZo358R2h+:sP1RID+YviYCe588h+
Threatray 1'069 similar samples on MalwareBazaar
TLSH T1B3851290E350ECF8F8294C768974D6281A239A6DE4A90A3F259A341D69F374350FFD4F
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
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)
File icon (PE):PE icon
dhash icon c4c4c4ccfccc7430 (5 x AgentTesla, 5 x Formbook, 3 x SnakeKeylogger)
Reporter abuse_ch
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:Sekslberes
Issuer:Sekslberes
Algorithm:sha256WithRSAEncryption
Valid from:2023-12-19T01:09:03Z
Valid to:2026-12-18T01:09:03Z
Serial number: 7b32f01a3a74b1fa45c3a8a7ced702de7ce2764b
Thumbprint Algorithm:SHA256
Thumbprint: dc99215e86f7b4113a49c3983cffe060595ed6856147d0a15b85eff0e010228a
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
2
# of downloads :
360
Origin country :
NL NL
Vendor Threat Intelligence
Detection(s):
PUA.Win.Adware.Johnnie-6912799-0
Create hunting rule

SecuriteInfo.com.Trojan.NSIS.Injector.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Searching for the window
Creating a window
Creating a file
Сreating synchronization primitives
Creating a file in the %temp% directory
Delayed reading of the file
Verdict:
Malicious
Labled as:
Win/malicious_confidence_70%
Link:
https://www.hybrid-analysis.com/sample/f2b345fcebcd9ed2e342399cfe9819abee7c3642efb6279ad3b4c940555d4564
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/79a3b22a-0cc3-4a12-a151-0e915c2f8727
Result
Threat name:
GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
84 / 100
Link:
https://www.joesandbox.com/analysis/1395054
Signature
Icon mismatch, binary includes an icon from a different legit application in order to fool users
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: New RUN Key Pointing to Suspicious Folder
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
Score:
94%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/f2b345fcebcd9ed2e342399cfe9819abee7c3642efb6279ad3b4c940555d4564
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f2b345fcebcd9ed2e342399cfe9819abee7c3642efb6279ad3b4c940555d4564/
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Malicious
First seen:
2024-02-19 11:49:09 UTC
File Type:
PE (Exe)
Extracted files:
35
AV detection:
15 of 24 (62.50%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=6kzul7hlzwpnfy2chgop5gazvpxhynsc563cpgwtwteuavk5ivsa._file
Verdict:
unknown
Similar samples:
30c31a99eda4daca4085458968e8d09f450f1ed7170f76b95cf7694acb0c7f02
GuLoader
4bc7c76462ca49d995702befda5647f40b729659d1d97129723ab1eb4ed45787
GuLoader
7bec152e6ebe8d516418fd4ad7c46211577c8841bce146a3e57d7b8eafa6e036
GuLoader
844956284f698514c92b7dd3e64815fad360c362797f14eb187205e178b405e1
GuLoader
863da396800cfdb42428375c45dce9778798ec4669420f00561b8654aa25ee09
GuLoader
8dfaec85a4a9f25fd806a2367c6ae46d270ad50497c0cc3aaa866505096f036d
GuLoader
b07907ce3ee14b8128039ecb8e635976fc216c77035d5bf38f42ed900197c879
GuLoader
cb003e07b2f6b1286333fedb15c3e15389c8faa917c082fb04ede40a065ee55c
GuLoader
f854bd36800e1023b94344b4e349a6a3b725872f39cadb9e6dc62b739fcf6b23
GuLoader
+ 1'059 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  7/10
Tags:
persistence
Link:
https://tria.ge/reports/240220-hyvvwsdb4v/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Windows directory
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Unpacked files
SH256 hash:
904fd5481d72f4e03b01a455f848dedd095d0fb17e33608e0d849f5196fb6ff8
MD5 hash:
55a26d7800446f1373056064c64c3ce8
SHA1 hash:
80256857e9a0a9c8897923b717f3435295a76002
Detections:
win_qtbot_auto
Create hunting rule
Link:
https://www.unpac.me/results/a9d59267-f6f1-4836-997b-40506353256e/
Parent samples :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 hash:
f2b345fcebcd9ed2e342399cfe9819abee7c3642efb6279ad3b4c940555d4564
MD5 hash:
7770760fd67b4ec881c0fe317c9a400e
SHA1 hash:
09468febd4a58cbc0936570317e9b7bf7d654143
Link:
https://www.unpac.me/results/a9d59267-f6f1-4836-997b-40506353256e/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/f2b345fcebcd/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
GuLoader
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/f2b345fcebcd9ed2e342399cfe9819abee7c3642efb6279ad3b4c940555d4564

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.

Malspam

GuLoader

Executable exe f2b345fcebcd9ed2e342399cfe9819abee7c3642efb6279ad3b4c940555d4564

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments