MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 66c3a25c814ae91de1d7df6c75bbc6588b1adcc8edc8ab916c1d99f32cbec276. 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 11 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 66c3a25c814ae91de1d7df6c75bbc6588b1adcc8edc8ab916c1d99f32cbec276
SHA3-384 hash: edcbb28e358249fd8fbfbcc8d8ad03f72bf2d35be64c744b62e89a1a1670be9a017f958381ba7bdbf64e447527d47afd
SHA1 hash: 29227d0c3673b5e04f8f0afa3a73ee2f65ce83d8
MD5 hash: 8c2802b0a6b5cc1aac214c7ce02e1ec3
humanhash: indigo-stream-nevada-eleven
File name:file
Download: download sample
Signature MarsStealer
Create hunting rule
File size:262'656 bytes
First seen:2023-11-07 01:05:01 UTC
Last seen:2023-11-07 04:16:27 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash d19735af95c3b3e8549c8f7251f58606 (1 x MarsStealer, 1 x CoinMiner, 1 x Stealc)
ssdeep 3072:4JDjFmUIgRoKT1sXUVGE+lQULKdiR1wPVW8PPt9+usQSoNw4WdtuwT:4YUI6oqSXUaQu1mVPf+usQxHm
TLSH T190445C0353D17CA5F5265B328E2EC6F8771EF9918F453BEA26586A2F09B01F1C272712
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 0000060901012100 (1 x MarsStealer)
Reporter andretavare5
Tags:exe MarsStealer


Avatar
andretavare5
Sample downloaded from http://194.49.94.48/timeSync.exe

Intelligence

File Origin
# of uploads :
6
# of downloads :
345
Origin country :
US US
Vendor Threat Intelligence
Malware family:
arkei
Create hunting rule
ID:
1
File name:
ceac8d319a011ba082cf1ab197d328e9
Verdict:
Malicious activity
Analysis date:
2023-11-07 00:33:57 UTC
Tags:
evasion loader stealer arkei vidar gcleaner privateloader opendir smoke risepro redline stealc tofsee botnet ransomware stop miner sinkhole
Link:
https://app.any.run/tasks/551d71d5-6423-48ac-9f97-344f37c579c7

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.TrojanX-gen.5774.18396.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
DNS request
Launching the default Windows debugger (dwwin.exe)
Sending a custom TCP request
Gathering data
Verdict:
No Threat
Threat level:
  10/10
Confidence:
100%
Tags:
control greyware lolbin packed
Link:
https://www.filescan.io/uploads/65498d3f886b1623ff3b63b1/reports/3757051f-2790-40aa-aae1-d64342b97c07/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/66c3a25c814ae91de1d7df6c75bbc6588b1adcc8edc8ab916c1d99f32cbec276
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/1e7fa8f9-3936-42a3-b5ff-8722902a2828
Result
Threat name:
Stealc, Vidar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1338012
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Found evasive API chain (may stop execution after checking locale)
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
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
Sample uses string decryption to hide its real strings
Self deletion via cmd or bat file
Snort IDS alert for network traffic
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected Stealc
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/66c3a25c814ae91de1d7df6c75bbc6588b1adcc8edc8ab916c1d99f32cbec276
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/66c3a25c814ae91de1d7df6c75bbc6588b1adcc8edc8ab916c1d99f32cbec276/
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=m3b2exebjlur3yox35whlo6glcfrvxgi5xekxelmdwm7glf6yj3a._file
Result
Malware family:
stealc
Create hunting rule
Score:
  10/10
Tags:
family:stealc discovery spyware stealer
Link:
https://tria.ge/reports/231107-bfhpaahb8t/
Behaviour
Checks processor information in registry
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Accesses cryptocurrency files/wallets, possible credential harvesting
Checks installed software on the system
Checks computer location settings
Deletes itself
Loads dropped DLL
Reads user/profile data of web browsers
Downloads MZ/PE file
Stealc
Malware Config
C2 Extraction:
http://jaimemcgee.top
Unpacked files
SH256 hash:
98e47c023430666672d18ddc47b21e511214a607d8a86586e01e2d33bbe20b35
MD5 hash:
b663d60bac4cf5c09fd1399aa29f38e3
SHA1 hash:
dbf52a4f440ce4d8236b7dad5dd9802a5bb84644
Detections:
stealc
Create hunting rule
Link:
https://www.unpac.me/results/6d6dcd1d-3504-4c35-aad5-4fc5512fa32c/
Parent samples :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 hash:
66c3a25c814ae91de1d7df6c75bbc6588b1adcc8edc8ab916c1d99f32cbec276
MD5 hash:
8c2802b0a6b5cc1aac214c7ce02e1ec3
SHA1 hash:
29227d0c3673b5e04f8f0afa3a73ee2f65ce83d8
Link:
https://www.unpac.me/results/6d6dcd1d-3504-4c35-aad5-4fc5512fa32c/
Malware family:
Stealc
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/66c3a25c814a/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/66c3a25c814ae91de1d7df6c75bbc6588b1adcc8edc8ab916c1d99f32cbec276

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:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerException__SetConsoleCtrl
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:detect_Mars_Stealer
Create hunting rule
Author:@malgamy12
Description:detect_Mars_Stealer
Rule name:infostealer_win_stealc_standalone
Create hunting rule
Description:Find standalone Stealc sample based on decryption routine or characteristic strings
Reference:https://blog.sekoia.io/stealc-a-copycat-of-vidar-and-raccoon-infostealers-gaining-in-popularity-part-1/
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:Trojan_W32_Gh0stMiancha_1_0_0
Create hunting rule
Rule name:Windows_Trojan_Smokeloader_3687686f
Create hunting rule
Author:Elastic Security
Rule name:Windows_Trojan_Smokeloader_ea14b2a5
Create hunting rule
Author:Elastic Security
Rule name:win_stealc_w0
Create hunting rule
Author:crep1x
Description:Find standalone Stealc sample based on decryption routine or characteristic strings
Reference:https://blog.sekoia.io/stealc-a-copycat-of-vidar-and-raccoon-infostealers-gaining-in-popularity-part-1/
Rule name:yarahub_win_stealc_bytecodes_oct_2023
Create hunting rule
Author:Matthew @ Embee_Research

File information

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

  
Dropped by
PrivateLoader
  
Delivery method
Distributed via drive-by
  
URLhaus
https://urlhaus.abuse.ch/url/2728025/

Comments