MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c308013d90d5f773466b86052267ddcb476c9a99acc5e639fa5b20e5dda85e41. 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 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c308013d90d5f773466b86052267ddcb476c9a99acc5e639fa5b20e5dda85e41
SHA3-384 hash: 5c8bc752494bfd6589df9669ea0902bc1d6775621e7234e9566d84845ef4a2a05529e5fc7b2e0cb067bd77078bcd9d0f
SHA1 hash: 2327a5cf596280b3bcf6fb4934bc9b78bd738478
MD5 hash: 522dd9b39873f815572fb766b67c77b6
humanhash: early-yellow-north-autumn
File name:file
Download: download sample
Signature MarsStealer
Create hunting rule
File size:222'624 bytes
First seen:2024-08-22 14:56:22 UTC
Last seen:2024-08-27 17:46:28 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'648 x AgentTesla, 19'452 x Formbook, 12'201 x SnakeKeylogger)
ssdeep 6144:LswuJF2j1Rwr1WZmmb0bKxzYqx8GGkREO:cDh2m/KxzYcjxREO
TLSH T10424126046E81E24FFA60E3034D6E3256970E793E691C9E3B0B9C2159F1C3253DB62F6
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)
Magika pebin
Reporter Bitsight
Tags:exe MarsStealer


Avatar
Bitsight
url: http://147.45.44.104/yuop/66c74ba23d580_stealc_cry.exe#kiscr

Intelligence

File Origin
# of uploads :
2
# of downloads :
411
Origin country :
US US
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
file
Verdict:
Malicious activity
Analysis date:
2024-08-22 14:58:15 UTC
Tags:
stealer stealc loader raccoonclipper
Link:
https://app.any.run/tasks/8f3d5c06-ad3f-4b72-bf58-ab680347cf80

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Packed.Stealerc-10034897-0
Create hunting rule

Win.Packed.Stealerc-10034910-0
Create hunting rule

Verdict:
Malicious
Score:
70%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66c751bfe7ff3f5a063bc4bd
Tags:
Encryption Static
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Launching a process
Creating a file
Сreating synchronization primitives
Connection attempt
Sending an HTTP GET request
Running batch commands
Creating a process with a hidden window
Forced shutdown of a system process
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
overlay packed
Link:
https://www.filescan.io/uploads/66c751c106cd69fa60b97081/reports/2ba06b2b-ca94-42b4-9ea9-5a8846220b54/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/c308013d90d5f773466b86052267ddcb476c9a99acc5e639fa5b20e5dda85e41
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/753af780-916d-4061-a026-e901d27cc06e
Result
Threat name:
Stealc, Vidar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1497514
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 malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Injects a PE file into a foreign processes
Machine Learning detection for sample
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 steal Crypto Currency Wallets
Writes to foreign memory regions
Yara detected Powershell download and execute
Yara detected Stealc
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1497514 Sample: file.exe Startdate: 22/08/2024 Architecture: WINDOWS Score: 100 34 aldiablo.cl 2->34 40 Suricata IDS alerts for network traffic 2->40 42 Found malware configuration 2->42 44 Antivirus detection for URL or domain 2->44 46 7 other signatures 2->46 9 file.exe 2 2->9         started        signatures3 process4 file5 24 C:\Users\user\AppData\Local\...\file.exe.log, ASCII 9->24 dropped 48 Contains functionality to inject code into remote processes 9->48 50 Writes to foreign memory regions 9->50 52 Allocates memory in foreign processes 9->52 54 Injects a PE file into a foreign processes 9->54 13 RegAsm.exe 35 9->13         started        18 conhost.exe 9->18         started        signatures6 process7 dnsIp8 36 193.176.190.41, 49733, 49741, 80 AGROSVITUA unknown 13->36 38 aldiablo.cl 186.64.114.115, 443, 49734 ZAMLTDACL Chile 13->38 26 C:\Users\user\AppData\...\vcruntime140[1].dll, PE32 13->26 dropped 28 C:\Users\user\AppData\...\softokn3[1].dll, PE32 13->28 dropped 30 C:\Users\user\AppData\Local\...\nss3[1].dll, PE32 13->30 dropped 32 9 other files (none is malicious) 13->32 dropped 56 Found many strings related to Crypto-Wallets (likely being stolen) 13->56 58 Tries to harvest and steal ftp login credentials 13->58 60 Tries to harvest and steal browser information (history, passwords, etc) 13->60 62 4 other signatures 13->62 20 cmd.exe 2 13->20         started        file9 signatures10 process11 process12 22 conhost.exe 20->22         started       
Score:
61%
Verdict:
Susipicious
File Type:
PE
Link:
https://malprob.io/report/c308013d90d5f773466b86052267ddcb476c9a99acc5e639fa5b20e5dda85e41
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c308013d90d5f773466b86052267ddcb476c9a99acc5e639fa5b20e5dda85e41/
Threat name:
Win32.Trojan.Privateloader
Create hunting rule
Status:
Malicious
First seen:
2024-08-22 14:57:05 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ymeacpmq2x3xgrtlqycsez65zndwzguzvtc6mop2lmqolxnilzaq._file
Verdict:
malicious
Result
Malware family:
stealc
Create hunting rule
Score:
  10/10
Tags:
family:stealc botnet:cry discovery stealer
Link:
https://tria.ge/reports/240822-sbkrhstakb/
Behaviour
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Program crash
Suspicious use of SetThreadContext
Stealc
Malware Config
C2 Extraction:
http://193.176.190.41
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/04278779-0b06-4b70-8ba2-4f440101f805
Unpacked files
SH256 hash:
9b86d8c73fa219bef3689dd13e7ab7996cf4007a5c72ea988de8690fb7b9ea48
MD5 hash:
175e665a8d0021510549eb8557b01bbf
SHA1 hash:
71f011c065cb77d77c3f671a25b24b044e2ba969
Detections:
stealc
Create hunting rule
Link:
https://www.unpac.me/results/48a55bd2-4322-4820-9fa3-9ed8c678516c/
Parent samples :
9f4a43a1e05196eb4cfa7b9aa2cc09e9fbdcc0047cada2cb9f30d63d9386a686
b3e2fe43f3024cc479415e745cd9826752debe4e8b208e5e5b7cc510723b787d
c308013d90d5f773466b86052267ddcb476c9a99acc5e639fa5b20e5dda85e41
a51f55434ef4466043357f63161a7e4a91194b7a8bcb53d7d6074135446f29ce
9c4dca830487bda060624059ffc910041ce76975a00750092fcfbb0ba99512ce
677074e2c7852d99ae47bcc355c3d77c3afa0391f9393012c3b1ef24957beacb
SH256 hash:
c308013d90d5f773466b86052267ddcb476c9a99acc5e639fa5b20e5dda85e41
MD5 hash:
522dd9b39873f815572fb766b67c77b6
SHA1 hash:
2327a5cf596280b3bcf6fb4934bc9b78bd738478
Link:
https://www.unpac.me/results/48a55bd2-4322-4820-9fa3-9ed8c678516c/
Malware family:
Stealc
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c308013d90d5/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/c308013d90d5f773466b86052267ddcb476c9a99acc5e639fa5b20e5dda85e41

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_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 c308013d90d5f773466b86052267ddcb476c9a99acc5e639fa5b20e5dda85e41

(this sample)

  
Dropped by
Privateloader
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3122523/

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