MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4e93192fdadcc595094e30f1173867abf85e2fce78a90585268c52a3924ee002. 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



MarsStealer


Vendor detections: 15


Intelligence 15 IOCs YARA 4 File information Comments

SHA256 hash: 4e93192fdadcc595094e30f1173867abf85e2fce78a90585268c52a3924ee002
SHA3-384 hash: 77c241d4a50c43ed4825f77fe063a6898b963fb1ee95a00af02719346a8f8e3c7c5663b6413a999d129a875b9d92b2bc
SHA1 hash: 7a6ba817e6e0d16822d945834db0c3b1b795e566
MD5 hash: fcd9ca1ca87a23403a8a8a8c064bc7e0
humanhash: rugby-ink-black-ink
File name:yanbaosou.exe
Download: download sample
Signature MarsStealer
File size:11'016'896 bytes
First seen:2023-10-15 06:16:26 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'205 x SnakeKeylogger)
ssdeep 12288:GV0zkc6jN5fWgxarK4X5EYGDVCBnr98KFslI0QnUpmA:fg/xt4EVEdA
Threatray 145 similar samples on MalwareBazaar
TLSH T1F4B6492439FA501AF173EF7A8BE4B9DADA6FB7733B036469105103864723A81DDC153A
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
File icon (PE):PE icon
dhash icon c494927b78595838 (2 x MarsStealer)
Reporter Anonymous
Tags:exe MarsStealer

Intelligence


File Origin
# of uploads :
1
# of downloads :
324
Origin country :
GB GB
Vendor Threat Intelligence
Malware family:
ID:
1
File name:
yanbaosou.exe
Verdict:
Malicious activity
Analysis date:
2023-10-15 05:07:30 UTC
Tags:
marsstealer stealer arkei

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file
Сreating synchronization primitives
Creating a process from a recently created file
Sending a custom TCP request
DNS request
Sending an HTTP GET request
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Verdict:
No Threat
Threat level:
  2.5/10
Confidence:
60%
Tags:
overlay
Result
Verdict:
MALICIOUS
Malware family:
Oski Stealer
Verdict:
Malicious
Result
Threat name:
Mars Stealer, Vidar
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
.NET source code contains very large strings
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to detect sleep reduction / modifications
Found evasive API chain (may stop execution after checking computer name)
Found evasive API chain (may stop execution after checking mutex)
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
PE file has a writeable .text section
PE file has nameless sections
Sample uses string decryption to hide its real strings
Tries to harvest and steal browser information (history, passwords, etc)
Yara detected Mars stealer
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Gathering data
Threat name:
ByteCode-MSIL.Spyware.Marsstealer
Status:
Malicious
First seen:
2023-10-15 07:05:08 UTC
File Type:
PE (.Net Exe)
Extracted files:
2
AV detection:
19 of 23 (82.61%)
Threat level:
  2/5
Result
Malware family:
marsstealer
Score:
  10/10
Tags:
family:marsstealer botnet:default spyware stealer
Behaviour
Modifies system certificate store
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Reads user/profile data of web browsers
Mars Stealer
Malware Config
C2 Extraction:
kenesrakishev.net/wp-load.php
Unpacked files
SH256 hash:
b81395534097bede81c1160f66ef161e8d00edce94b3eb0cf49575cd753680f4
MD5 hash:
c85e3ac3b160b468ef6377002e98a811
SHA1 hash:
f2245f9dfc0d86012b06b9a24c1ed563f44549d9
SH256 hash:
d502fa0a399b5cb801370b9b584d93baa7d78de4c4862551dddaa630aa320ffb
MD5 hash:
12a5ab848904db834c466b627c760ca4
SHA1 hash:
2b754025b81a1d811d21e06bbf2acc6fa2af4634
SH256 hash:
4e93192fdadcc595094e30f1173867abf85e2fce78a90585268c52a3924ee002
MD5 hash:
fcd9ca1ca87a23403a8a8a8c064bc7e0
SHA1 hash:
7a6ba817e6e0d16822d945834db0c3b1b795e566
Please note that we are no longer able to provide a coverage score for Virus Total.

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:NET
Author:malware-lu
Rule name:NETexecutableMicrosoft
Author:malware-lu
Rule name:pe_imphash
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash

File information


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

Comments