MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a96b3ddd991bc4a88831685ef44cbd4ad7945a4afc3a028f42812f269d513674. 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: 18


Intelligence 18 IOCs YARA 7 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a96b3ddd991bc4a88831685ef44cbd4ad7945a4afc3a028f42812f269d513674
SHA3-384 hash: 8c73de2f89b7b71a0993db7c415b9b6faf53c14e4c494211fd203e3ffecad4e9f49c64a8c00b52ed79d1b7126e752bf4
SHA1 hash: 6ef340603771e9484f56cd8dbd8c3c9d331a49b4
MD5 hash: ef05d64893224900ae27b3d2ac8323cc
humanhash: social-saturn-blue-fillet
File name:66bddfc358668_stealc.exe
Download: download sample
Signature MarsStealer
Create hunting rule
File size:221'264 bytes
First seen:2024-08-18 20:01:49 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'461 x Formbook, 12'202 x SnakeKeylogger)
ssdeep 6144:U9N6HzLQfUqkYF4jMfghcS7g/AcaJh+wA+Q3ETEO:U9NEIMdYGjMgNrBJbA+yETEO
TLSH T1E72412685ADC4738FFEC4BB4BA61C117AE3AF3605253D5EB1181C14B5E86B403B9826E
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10523/12/4)
6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.1% (.EXE) Win32 Executable (generic) (4504/4/1)
Reporter aachum
Tags:exe MarsStealer


Avatar
iamaachum
StealC C2: http://46.8.231.109/c4754d4f680ead72.php

Intelligence

File Origin
# of uploads :
1
# of downloads :
353
Origin country :
ES ES
Vendor Threat Intelligence
Malware family:
vidar
Create hunting rule
ID:
1
File name:
66bddfc358668_stealc.exe
Verdict:
Malicious activity
Analysis date:
2024-08-18 20:03:56 UTC
Tags:
stealer stealc loader lumma vidar
Link:
https://app.any.run/tasks/6bd16551-65be-4101-8608-ccf81398bf82

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Packed.Pwsx-10034591-0
Create hunting rule

Verdict:
Malicious
Score:
93.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66c2533caa5b40be0aa07ae9
Tags:
Encryption Static Stealc
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
overlay packed stealc
Link:
https://www.filescan.io/uploads/66c2533f3930e113b90d2b93/reports/70ec676b-673b-4504-9150-ee9ee186b709/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/a96b3ddd991bc4a88831685ef44cbd4ad7945a4afc3a028f42812f269d513674
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.
Malware family:
Stealc
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/33cea26d-9ad9-44e3-bdea-be38a8c95c98
Result
Threat name:
LummaC, Stealc, Vidar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1494603
Signature
.NET source code contains very large array initializations
AI detected suspicious sample
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to inject code into remote processes
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)
Injects a PE file into a foreign processes
LummaC encrypted strings found
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
Searches for specific processes (likely to inject)
Suricata IDS alerts for network traffic
Tries to harvest and steal Bitcoin Wallet information
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Crypto Currency Wallets
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected Powershell download and execute
Yara detected Stealc
Yara detected Vidar
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1494603 Sample: 66bddfc358668_stealc.exe Startdate: 18/08/2024 Architecture: WINDOWS Score: 100 84 weiggheticulop.shop 2->84 86 tenntysjuxmz.shop 2->86 88 11 other IPs or domains 2->88 112 Suricata IDS alerts for network traffic 2->112 114 Found malware configuration 2->114 116 Malicious sample detected (through community Yara rule) 2->116 118 13 other signatures 2->118 12 66bddfc358668_stealc.exe 1 2->12         started        signatures3 process4 file5 78 C:\Users\...\66bddfc358668_stealc.exe.log, ASCII 12->78 dropped 150 Contains functionality to inject code into remote processes 12->150 152 Writes to foreign memory regions 12->152 154 Allocates memory in foreign processes 12->154 156 Injects a PE file into a foreign processes 12->156 16 RegAsm.exe 39 12->16         started        signatures6 process7 dnsIp8 80 46.8.231.109, 49732, 80 FIORD-ASIP-transitoperatorinRussiaUkraineandBaltics Russian Federation 16->80 82 147.45.44.104, 49737, 49781, 80 FREE-NET-ASFREEnetEU Russian Federation 16->82 62 C:\Users\user\AppData\...\softokn3[1].dll, PE32 16->62 dropped 64 C:\Users\user\AppData\Local\...\nss3[1].dll, PE32 16->64 dropped 66 C:\Users\user\AppData\...\mozglue[1].dll, PE32 16->66 dropped 68 13 other files (9 malicious) 16->68 dropped 102 Found evasive API chain (may stop execution after checking mutex) 16->102 104 Tries to steal Mail credentials (via file / registry access) 16->104 106 Tries to harvest and steal browser information (history, passwords, etc) 16->106 108 4 other signatures 16->108 21 cmd.exe 1 16->21         started        23 cmd.exe 1 16->23         started        file9 signatures10 process11 process12 25 CBGCGDBKEG.exe 1 21->25         started        28 conhost.exe 21->28         started        30 BKJEHCAKFB.exe 1 23->30         started        32 conhost.exe 23->32         started        signatures13 128 Multi AV Scanner detection for dropped file 25->128 130 Machine Learning detection for dropped file 25->130 132 Writes to foreign memory regions 25->132 34 RegAsm.exe 1 37 25->34         started        39 RegAsm.exe 25->39         started        134 Allocates memory in foreign processes 30->134 136 Injects a PE file into a foreign processes 30->136 138 LummaC encrypted strings found 30->138 41 RegAsm.exe 30->41         started        process14 dnsIp15 90 195.201.118.191, 443, 49741, 49743 HETZNER-ASDE Germany 34->90 92 steamcommunity.com 23.192.247.89, 443, 49739, 49755 AKAMAI-ASUS United States 34->92 70 C:\Users\user\...\66bfee9fd7d9a_lumma[1].exe, PE32 34->70 dropped 72 C:\Users\user\...\66bddfcb52736_vidar[1].exe, PE32 34->72 dropped 74 C:\ProgramData\KEHCAFHIJE.exe, PE32 34->74 dropped 76 C:\ProgramData\HCFBAFIDAE.exe, PE32 34->76 dropped 120 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 34->120 122 Tries to harvest and steal ftp login credentials 34->122 124 Tries to harvest and steal browser information (history, passwords, etc) 34->124 126 2 other signatures 34->126 43 KEHCAFHIJE.exe 34->43         started        46 HCFBAFIDAE.exe 34->46         started        48 cmd.exe 34->48         started        94 southedhiscuso.shop 104.21.17.213, 443, 49752, 49795 CLOUDFLARENETUS United States 41->94 96 potentioallykeos.shop 172.67.148.102, 443, 49740, 49786 CLOUDFLARENETUS United States 41->96 98 4 other IPs or domains 41->98 file16 signatures17 process18 signatures19 140 Multi AV Scanner detection for dropped file 43->140 142 Machine Learning detection for dropped file 43->142 144 Writes to foreign memory regions 43->144 50 RegAsm.exe 43->50         started        146 Allocates memory in foreign processes 46->146 148 Injects a PE file into a foreign processes 46->148 53 RegAsm.exe 46->53         started        56 RegAsm.exe 46->56         started        58 conhost.exe 48->58         started        60 timeout.exe 48->60         started        process20 dnsIp21 110 Tries to harvest and steal browser information (history, passwords, etc) 50->110 100 23.199.218.33, 443, 49798, 49800 AKAMAI-ASUS United States 53->100 signatures22
Score:
96%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a96b3ddd991bc4a88831685ef44cbd4ad7945a4afc3a028f42812f269d513674
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a96b3ddd991bc4a88831685ef44cbd4ad7945a4afc3a028f42812f269d513674/
Threat name:
Win32.Trojan.StealC
Create hunting rule
Status:
Malicious
First seen:
2024-08-18 18:11:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
21 of 24 (87.50%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=vfvt3xmzdpckrcbrnbppitf5jllziwsk7q5afd2cqexsnhkrgz2a._file
Verdict:
malicious
Result
Malware family:
vidar
Create hunting rule
Score:
  10/10
Tags:
family:lumma family:stealc family:vidar botnet:default credential_access discovery spyware stealer
Link:
https://tria.ge/reports/240818-yr43zsvcqk/
Behaviour
Checks processor information in registry
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Browser Information Discovery
Enumerates physical storage devices
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Accesses cryptocurrency files/wallets, possible credential harvesting
Checks installed software on the system
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Reads data files stored by FTP clients
Reads user/profile data of web browsers
Unsecured Credentials: Credentials In Files
Downloads MZ/PE file
Credentials from Password Stores: Credentials from Web Browsers
Detect Vidar Stealer
Lumma Stealer, LummaC
Stealc
Vidar
Malware Config
C2 Extraction:
http://46.8.231.109
https://steamcommunity.com/profiles/76561199751190313
https://t.me/pech0nk
https://cagedwifedsozm.shop/api
https://potentioallykeos.shop/api
https://interactiedovspm.shop/api
https://charecteristicdxp.shop/api
https://deicedosmzj.shop/api
https://southedhiscuso.shop/api
https://consciousourwi.shop/api
https://tenntysjuxmz.shop/api
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/bb1da1ad-f055-43f6-a5d6-975ca8d3e5ca
Unpacked files
SH256 hash:
aef44846abc5bf334b20a8acb9991bf0293170b6a65d49a84f184adcd3529216
MD5 hash:
bdb4e6d1ef19a3ffe4c2f75819c209e9
SHA1 hash:
8d81d525dbae6a314565309531f46fa0ddd65b3f
Detections:
stealc
Create hunting rule
Link:
https://www.unpac.me/results/39d9dd83-4cc5-4177-8ee7-242c099741f5/
Parent samples :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 hash:
a96b3ddd991bc4a88831685ef44cbd4ad7945a4afc3a028f42812f269d513674
MD5 hash:
ef05d64893224900ae27b3d2ac8323cc
SHA1 hash:
6ef340603771e9484f56cd8dbd8c3c9d331a49b4
Link:
https://www.unpac.me/results/39d9dd83-4cc5-4177-8ee7-242c099741f5/
Malware family:
Stealc
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a96b3ddd991b/report/overview.html
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/a96b3ddd991bc4a88831685ef44cbd4ad7945a4afc3a028f42812f269d513674

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:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:pe_imphash
Create hunting rule
Rule name:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits
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 a96b3ddd991bc4a88831685ef44cbd4ad7945a4afc3a028f42812f269d513674

(this sample)

  
Link
https://tria.ge/240818-yma94s1dqf
  
Dropped by
PrivateLoader
  
URLhaus
https://urlhaus.abuse.ch/url/3114094/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3114129/

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (GUARD_CF)high

Comments


Avatar
commented on 2024-08-18 20:02:28 UTC

From 147.45.44.104/prog/66bddfc358668_stealc.exe#space , forgot to add in the description. My apologies.