MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 664bf09b6f40a8f36643766189b1ec1cbf9578ff7d207b9f23803ac7676a119e. 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: 6


Intelligence 6 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 664bf09b6f40a8f36643766189b1ec1cbf9578ff7d207b9f23803ac7676a119e
SHA3-384 hash: 9720610c11d55e6f3adcbd0a82f83cbd3f93730c39490eb456df52f8ffdaafecdd825b95e273784d7d68422301ba35bc
SHA1 hash: 25de6008b7f77121d432811376b4703e727e902f
MD5 hash: e766a80e73cd62b0aadf800f0e8bfe2c
humanhash: delta-wyoming-berlin-tennis
File name:New_Contract_ontractNo-S-2104-0036_Business_Sales_confirmation.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:102'400 bytes
First seen:2021-06-04 13:01:40 UTC
Last seen:2021-06-04 13:44:19 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 329714ba87b5b72d54f447a30ad0c5e2 (3 x GuLoader)
ssdeep 3072:/J9gS1jzW9LZrlHaxNNdgGI3lTEudD14hJRub:/L1nW9dlHaxDuGcTl514hJRu
TLSH C9A39533E3421719F25A4FF03426B21523369F2744676E06B7899BA8F8F02D3B5D478A
Reporter James_inthe_box
Tags:exe GuLoader

Intelligence

File Origin
# of uploads :
2
# of downloads :
519
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
New_Contract_ontractNo-S-2104-0036_Business_Sales_confirmation.exe
Verdict:
No threats detected
Analysis date:
2021-06-04 13:11:59 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/cebff6e8-d4e9-43dc-b71f-0ba12699c90e

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/164611/
Detection(s):
SecuriteInfo.com.__vbaHresultCheckObj.23151.14383.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
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.
Result
Threat name:
GuLoader
Create hunting rule
Detection:
malicious
Classification:
rans.troj.evad
Score:
96 / 100
Link:
https://www.joesandbox.com/analysis/797288
Signature
C2 URLs / IPs found in malware configuration
Detected RDTSC dummy instruction sequence (likely for instruction hammering)
Found malware configuration
Found potential dummy code loops (likely to delay analysis)
Multi AV Scanner detection for submitted file
Potential malicious icon found
Tries to detect virtualization through RDTSC time measurements
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/664bf09b6f40a8f36643766189b1ec1cbf9578ff7d207b9f23803ac7676a119e/
Threat name:
Win32.Trojan.Vebzenpak
Create hunting rule
Status:
Malicious
First seen:
2021-06-04 13:01:32 UTC
File Type:
PE (Exe)
Extracted files:
6
AV detection:
14 of 29 (48.28%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=mzf7bg3picupgzsdozqytmpmds7zk6h7puqhxhzdqa5moz3kcgpa._file
Result
Malware family:
guloader
Create hunting rule
Score:
  10/10
Tags:
family:guloader downloader
Link:
https://tria.ge/reports/210604-8s1cvlbn5s/
Behaviour
Suspicious use of SetWindowsHookEx
Guloader,Cloudeye
Malware Config
C2 Extraction:
https://tebogodigital.co.za/frim/build_mmHXva107.bin
https://tebogodigital.co.za/frib/build_mmHXva107.bin
Unpacked files
SH256 hash:
664bf09b6f40a8f36643766189b1ec1cbf9578ff7d207b9f23803ac7676a119e
MD5 hash:
e766a80e73cd62b0aadf800f0e8bfe2c
SHA1 hash:
25de6008b7f77121d432811376b4703e727e902f
Link:
https://www.unpac.me/results/430fa54a-910a-4dba-b852-acec61f2874a/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/664bf09b6f40a8f36643766189b1ec1cbf9578ff7d207b9f23803ac7676a119e

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:win_vobfus_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator

File information

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

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/164611/

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