MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 55e8777df222fc3d6fccd14c60d1aa21ebfb7d91a50b8959e5b54e10fdf8a9fd. 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: 12


Intelligence 12 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 55e8777df222fc3d6fccd14c60d1aa21ebfb7d91a50b8959e5b54e10fdf8a9fd
SHA3-384 hash: 8cff6dd61f22cd7a739f0b82082e00a223c92d53b2d6a54082dc293bcf5dd22b535280c12629e08d38ab0f043865ad6e
SHA1 hash: 301615452ba34c930b9d134ca4e3b8082f15cb1b
MD5 hash: 8830f7efe68fddb04c438f9aa1de2dba
humanhash: oranges-alpha-mango-hotel
File name:proccexp.exe
Download: download sample
Signature MarsStealer
Create hunting rule
File size:8'767'488 bytes
First seen:2023-10-03 14:46:53 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'206 x SnakeKeylogger)
ssdeep 49152:lluK1ytb+UC8AcqHag6tUDGBJseZHonFZbBZSGJv5pRGzO8KRi6hZSpm4/HScWnr:
Threatray 2 similar samples on MalwareBazaar
TLSH T1B69633213DFF109DB3A3AA5D4BD8B8BF495AF663270E30F9207157464722E818D92B35
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 187c9cdcdcc6d2e0 (3 x RedLineStealer, 1 x MarsStealer)
Reporter stealerkiller
Tags:Arkei exe MarsStealer


Avatar
stealerkiller
url : hxxp://rakishev.org/wp-load.php

Intelligence

File Origin
# of uploads :
1
# of downloads :
353
Origin country :
GB GB
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.972-1.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% subdirectories
Creating a file in the %AppData% subdirectories
Сreating synchronization primitives
Creating a process from a recently created file
Creating a window
Searching for synchronization primitives
Searching for the window
Creating a file
Creating a file in the drivers directory
Creating a service
Loading a system driver
Sending an HTTP GET request
DNS request
Sending a custom TCP request
Using the Windows Management Instrumentation requests
Launching the default Windows debugger (dwwin.exe)
Unauthorized injection to a recently created process
Enabling autorun for a service
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
anti-debug anti-vm control crypto dllhost explorer greyware hacktool infdefaultinstall lolbin pcalua remote replace rundll32 scriptrunner setupapi shell32
Link:
https://www.filescan.io/uploads/651c296abe42b2ac8e591c76/reports/fb4727b8-7ed4-440a-9a6a-2d967990a3cc/overview
Verdict:
Malicious
Labled as:
MSIL.Krypt.Generic
Link:
https://www.hybrid-analysis.com/sample/55e8777df222fc3d6fccd14c60d1aa21ebfb7d91a50b8959e5b54e10fdf8a9fd
Result
Verdict:
MALICIOUS
Malware family:
Oski Stealer
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/c470303e-c408-4be9-9c82-bb87aa1f668a
Result
Threat name:
Mars Stealer, Vidar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1318796
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
Contains functionality to modify clipboard data
Drops executable to a common third party application directory
Found evasive API chain (may stop execution after checking computer name)
Found evasive API chain (may stop execution after checking locale)
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 dropped file
Multi AV Scanner detection for submitted file
PE file has a writeable .text section
PE file has nameless sections
Sample is not signed and drops a device driver
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:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1318796 Sample: proccexp.exe Startdate: 03/10/2023 Architecture: WINDOWS Score: 100 45 Found malware configuration 2->45 47 Malicious sample detected (through community Yara rule) 2->47 49 Antivirus detection for URL or domain 2->49 51 11 other signatures 2->51 8 proccexp.exe 6 2->8         started        process3 file4 33 C:\Users\user\AppData\...\MYP79O4Q.exe, PE32 8->33 dropped 35 C:\ProgramData\USOPrivate\W74IU9RM.exe, PE32 8->35 dropped 65 Drops executable to a common third party application directory 8->65 12 MYP79O4Q.exe 6 8->12         started        16 W74IU9RM.exe 1 8->16         started        18 conhost.exe 8->18         started        signatures5 process6 file7 39 C:\Users\user\AppData\Roaming\Adobe\TE.exe, PE32 12->39 dropped 67 Antivirus detection for dropped file 12->67 69 Machine Learning detection for dropped file 12->69 71 Drops executable to a common third party application directory 12->71 20 TE.exe 15 12->20         started        24 conhost.exe 12->24         started        41 C:\Users\user\AppData\...\W74IU9RM64.exe, PE32+ 16->41 dropped 26 W74IU9RM64.exe 13 11 16->26         started        signatures8 process9 dnsIp10 43 rakishev.org 172.67.191.205, 49787, 80 CLOUDFLARENETUS United States 20->43 53 Antivirus detection for dropped file 20->53 55 Multi AV Scanner detection for dropped file 20->55 57 Found evasive API chain (may stop execution after checking mutex) 20->57 63 6 other signatures 20->63 29 WerFault.exe 20->29         started        37 C:\Windows\System32\drivers\PROCEXP152.SYS, PE32+ 26->37 dropped 59 Contains functionality to modify clipboard data 26->59 61 Sample is not signed and drops a device driver 26->61 31 WerFault.exe 26->31         started        file11 signatures12 process13
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/55e8777df222fc3d6fccd14c60d1aa21ebfb7d91a50b8959e5b54e10fdf8a9fd/
Threat name:
ByteCode-MSIL.Trojan.Znyonm
Create hunting rule
Status:
Malicious
First seen:
2023-10-03 14:47:09 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
20 of 23 (86.96%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=kxuho7psel6d236m2fggbunkehv7w7mruufyswpfwvhbb7pyvh6q._file
Verdict:
malicious
Similar samples:
c1266acce2c7a4c69f64c2226a8f780b2688ecf0f1812d0083a85648d350a666
MarsStealer
Result
Malware family:
marsstealer
Create hunting rule
Score:
  10/10
Tags:
family:marsstealer botnet:default stealer
Link:
https://tria.ge/reports/231003-r5vm5sca2w/
Behaviour
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Mars Stealer
Malware Config
C2 Extraction:
rakishev.org/wp-load.php
Unpacked files
SH256 hash:
5f239096c327b22c21c0205dde0d8dc4c41f458be802f74f54cdc5ba38921668
MD5 hash:
dc04cd84d39f8ad4354de37702a9a980
SHA1 hash:
db928ad60a7c29d5f5287b5f984d2e78fa64479a
Link:
https://www.unpac.me/results/b0658d0e-da17-484d-b2e4-d4fa4e2e2c0b/
SH256 hash:
1c3eeb24ebd209ac7577fee92ffdbff12f26f4f0537147191fbacf00443b97e6
MD5 hash:
83c8af47faa037b889e9acf82b928691
SHA1 hash:
16a12fc50153e7d082476c1f44047f32c2db1bf0
Link:
https://www.unpac.me/results/b0658d0e-da17-484d-b2e4-d4fa4e2e2c0b/
SH256 hash:
8eb92f711cee031c52cd7ab75859e1d2ea07204a8db519dddfa8934ef6d33bd1
MD5 hash:
00ed00ed81aa2d46a54788e23a61e345
SHA1 hash:
042c84606484b4602a8087967eff83727c1f168c
Link:
https://www.unpac.me/results/b0658d0e-da17-484d-b2e4-d4fa4e2e2c0b/
SH256 hash:
e6b47f3b0ec84b3bf8cc34c8b8dd7fc1a7798c71fded271a519da6da99e5c754
MD5 hash:
62baa03812a3266838fb6ac3bd2e19e0
SHA1 hash:
8d4ffcd78585509bb06424a025dad700f02dde26
Link:
https://www.unpac.me/results/b0658d0e-da17-484d-b2e4-d4fa4e2e2c0b/
SH256 hash:
55e8777df222fc3d6fccd14c60d1aa21ebfb7d91a50b8959e5b54e10fdf8a9fd
MD5 hash:
8830f7efe68fddb04c438f9aa1de2dba
SHA1 hash:
301615452ba34c930b9d134ca4e3b8082f15cb1b
Link:
https://www.unpac.me/results/b0658d0e-da17-484d-b2e4-d4fa4e2e2c0b/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Mars Stealer
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/55e8777df222fc3d6fccd14c60d1aa21ebfb7d91a50b8959e5b54e10fdf8a9fd

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
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:RSharedStrings
Create hunting rule
Author:Katie Kleemola
Description:identifiers for remote and gmremote
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Web download

MarsStealer

Executable exe 55e8777df222fc3d6fccd14c60d1aa21ebfb7d91a50b8959e5b54e10fdf8a9fd

(this sample)

anyrun
any.run
https://app.any.run/tasks/e906bb5e-6b1c-4ea5-b070-834c5c8c50ce
  
Dropping
MarsStealer
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2716276/

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