MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b3a3da0ff549b2e4bbbe5c230120617bb6f21d7344a79e28bab2e6cc89e5ca76. 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: 17


Intelligence 17 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b3a3da0ff549b2e4bbbe5c230120617bb6f21d7344a79e28bab2e6cc89e5ca76
SHA3-384 hash: 21f252b27bb2e1367994b961c07f394ea070ba0eb117d1f8d44aa109784b81d27ea63a18e66ad2048d77d5f0de39316f
SHA1 hash: ce159a0b5f49be75ed8da2d37cd4083a6a2564b3
MD5 hash: b8732b3b75df20d425b551b864275e1e
humanhash: dakota-failed-magazine-west
File name:file
Download: download sample
Signature MarsStealer
Create hunting rule
File size:2'134'528 bytes
First seen:2024-11-03 21:58:54 UTC
Last seen:2024-11-03 23:19:07 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 2eabe9054cad5152567f0699947a2c5b (2'852 x LummaStealer, 1'312 x Stealc, 1'026 x Healer)
ssdeep 49152:U6mlYrSOHE7zdjR05nORaslb2dBmvxe7UIlaWqE3+vck0Vzw8IEeHy:U6mlYrSOOzdjR0N9bdBmvxe7/l33+vbk
Threatray 27 similar samples on MalwareBazaar
TLSH T10DA5335B4850E465C3E84EF9316C13A0ECFDAB0E1A3CF44BCB1BE96925C5AE4BDC5291
TrID 27.1% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
20.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
18.6% (.EXE) Win32 Executable (generic) (4504/4/1)
8.5% (.ICL) Windows Icons Library (generic) (2059/9)
8.3% (.EXE) OS/2 Executable (generic) (2029/13)
Magika pebin
Reporter Bitsight
Tags:exe MarsStealer


Avatar
Bitsight
url: http://185.215.113.16/steam/random.exe

Intelligence

File Origin
# of uploads :
25
# of downloads :
4'302
Origin country :
US US
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
file
Verdict:
Malicious activity
Analysis date:
2024-11-03 22:01:29 UTC
Tags:
lumma stealer stealc loader
Link:
https://app.any.run/tasks/e795f37b-0ec1-407e-89c6-2c53c3ef54a2

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.BackdoorX-gen.23366.32138.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6727f22f8d23d904913336eb
Tags:
vmdetect autorun spam lien
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Searching for analyzing tools
Searching for the window
Creating a file
Running batch commands
Creating a process with a hidden window
Launching a process
Connection attempt to an infection source
Sending an HTTP GET request to an infection source
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
microsoft_visual_cc packed packed packer_detected
Link:
https://www.filescan.io/uploads/6727f2288b05163d9ab59a19/reports/c76d0aea-9d5a-4a63-8726-a38e82d7a091/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/b3a3da0ff549b2e4bbbe5c230120617bb6f21d7344a79e28bab2e6cc89e5ca76
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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/6ec608b4-6501-4c34-8aaf-dae880521c52
Result
Threat name:
Amadey, Credential Flusher, Stealc, Vida
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad.mine
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1548108
Signature
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Attempt to bypass Chrome Application-Bound Encryption
Binary is likely a compiled AutoIt script file
C2 URLs / IPs found in malware configuration
Checks for kernel code integrity (NtQuerySystemInformation(CodeIntegrityInformation))
Detected unpacking (changes PE section rights)
Disable Windows Defender notifications (registry)
Disable Windows Defender real time protection (registry)
Disables Windows Defender Tamper protection
Drops PE files to the document folder of the user
Drops PE files to the user root directory
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)
Hides threads from debuggers
Machine Learning detection for dropped file
Machine Learning detection for sample
Modifies windows update settings
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
PE file contains section with special chars
Potentially malicious time measurement code found
Sample uses string decryption to hide its real strings
Suricata IDS alerts for network traffic
Tries to detect process monitoring tools (Task Manager, Process Explorer etc.)
Tries to detect sandboxes / dynamic malware analysis system (registry check)
Tries to detect sandboxes and other dynamic analysis tools (window names)
Tries to detect virtualization through RDTSC time measurements
Tries to evade debugger and weak emulator (self modifying code)
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
Tries to steal Mail credentials (via file / registry access)
Yara detected Amadeys stealer DLL
Yara detected Credential Flusher
Yara detected Powershell download and execute
Yara detected Stealc
Yara detected Vidar stealer
Yara detected Xmrig cryptocurrency miner
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1548108 Sample: file.exe Startdate: 03/11/2024 Architecture: WINDOWS Score: 100 86 youtube.com 2->86 88 spocs.getpocket.com 2->88 90 13 other IPs or domains 2->90 114 Suricata IDS alerts for network traffic 2->114 116 Found malware configuration 2->116 118 Antivirus / Scanner detection for submitted sample 2->118 120 14 other signatures 2->120 9 file.exe 37 2->9         started        14 skotes.exe 23 2->14         started        16 skotes.exe 2->16         started        18 7 other processes 2->18 signatures3 process4 dnsIp5 102 185.215.113.206, 49730, 49750, 80 WHOLESALECONNECTIONSNL Portugal 9->102 104 185.215.113.16, 49758, 80 WHOLESALECONNECTIONSNL Portugal 9->104 106 127.0.0.1 unknown unknown 9->106 78 C:\Users\user\DocumentsJKJDBAAAEH.exe, PE32 9->78 dropped 80 C:\Users\user\AppData\...\softokn3[1].dll, PE32 9->80 dropped 82 C:\Users\user\AppData\Local\...\random[1].exe, PE32 9->82 dropped 84 13 other files (9 malicious) 9->84 dropped 148 Detected unpacking (changes PE section rights) 9->148 150 Attempt to bypass Chrome Application-Bound Encryption 9->150 152 Drops PE files to the document folder of the user 9->152 170 9 other signatures 9->170 20 cmd.exe 1 9->20         started        22 chrome.exe 9->22         started        108 185.215.113.43 WHOLESALECONNECTIONSNL Portugal 14->108 110 api.hostize.com 34.212.129.198 AMAZON-02US United States 14->110 154 Hides threads from debuggers 14->154 156 Tries to detect sandboxes / dynamic malware analysis system (registry check) 14->156 158 Tries to detect process monitoring tools (Task Manager, Process Explorer etc.) 14->158 25 b9b72b4bca.exe 14->25         started        28 dca1dfa397.exe 13 14->28         started        30 6e133ec818.exe 14->30         started        160 Antivirus detection for dropped file 16->160 162 Machine Learning detection for dropped file 16->162 164 Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors) 16->164 166 Binary is likely a compiled AutoIt script file 18->166 168 Checks for kernel code integrity (NtQuerySystemInformation(CodeIntegrityInformation)) 18->168 32 taskkill.exe 18->32         started        34 taskkill.exe 18->34         started        36 firefox.exe 18->36         started        38 6 other processes 18->38 file6 signatures7 process8 dnsIp9 40 DocumentsJKJDBAAAEH.exe 4 20->40         started        44 conhost.exe 20->44         started        92 192.168.2.4, 443, 49730, 49731 unknown unknown 22->92 94 239.255.255.250 unknown Reserved 22->94 46 chrome.exe 22->46         started        122 Detected unpacking (changes PE section rights) 25->122 124 Tries to detect sandboxes and other dynamic analysis tools (window names) 25->124 126 Modifies windows update settings 25->126 138 4 other signatures 25->138 128 Tries to evade debugger and weak emulator (self modifying code) 28->128 130 Hides threads from debuggers 28->130 132 Tries to detect sandboxes / dynamic malware analysis system (registry check) 28->132 134 Binary is likely a compiled AutoIt script file 30->134 49 taskkill.exe 30->49         started        55 5 other processes 30->55 136 Checks for kernel code integrity (NtQuerySystemInformation(CodeIntegrityInformation)) 32->136 51 conhost.exe 32->51         started        53 conhost.exe 34->53         started        96 youtube.com 142.250.184.206 GOOGLEUS United States 36->96 98 prod.detectportal.prod.cloudops.mozgcp.net 34.107.221.82 GOOGLEUS United States 36->98 100 4 other IPs or domains 36->100 57 2 other processes 36->57 59 6 other processes 38->59 signatures10 process11 dnsIp12 76 C:\Users\user\AppData\Local\...\skotes.exe, PE32 40->76 dropped 140 Antivirus detection for dropped file 40->140 142 Detected unpacking (changes PE section rights) 40->142 144 Machine Learning detection for dropped file 40->144 146 7 other signatures 40->146 61 skotes.exe 40->61         started        112 www.google.com 216.58.206.36, 443, 49731, 49735 GOOGLEUS United States 46->112 64 conhost.exe 49->64         started        66 conhost.exe 55->66         started        68 conhost.exe 55->68         started        70 conhost.exe 55->70         started        72 conhost.exe 55->72         started        74 firefox.exe 59->74         started        file13 signatures14 process15 signatures16 172 Hides threads from debuggers 61->172 174 Tries to detect sandboxes / dynamic malware analysis system (registry check) 61->174 176 Tries to detect process monitoring tools (Task Manager, Process Explorer etc.) 61->176
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b3a3da0ff549b2e4bbbe5c230120617bb6f21d7344a79e28bab2e6cc89e5ca76
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b3a3da0ff549b2e4bbbe5c230120617bb6f21d7344a79e28bab2e6cc89e5ca76/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2024-11-03 21:59:06 UTC
File Type:
PE (Exe)
AV detection:
16 of 38 (42.11%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wor5ud7vjgzojo56lqrqcidbpo3pehltistz4kf2wltmzcpfzj3a._file
Verdict:
malicious
Label(s):
stealc
Create hunting rule
Similar samples:
0c44b1e62d18eea3f88bef633e00cb76ce51eab57d3cd540888ae5dcedc0de09
MarsStealer
114e599411e6fa14e2231d45e8ad7ccfffcb068cebe1c93ee98094c8a744cecb
MarsStealer
19eb49df32f23fd37bddcd2287e8b6fa84ae5034946bf176054b24b570a12b0b
MarsStealer
1a04c6e6d21cdb8cb56d2e3fa6274491fd27021ea95922f4dd06df817b9b4c9d
MarsStealer
1f4559c2464e25078e6f0ae6b99990b6607c5adc0d631d43ba380ae7de51f0c1
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3aa0e6aadfe3dc6c13a8bc1bf1067767450f7a037c80d81ce7dfffba7239d6f8
MarsStealer
66ec85436947cf61b3e3ad15d0dbf5c1bb2d83b816006a376aa524cd772ce375
MarsStealer
9428acfc31a1bd917b6c19f0b67feb8425acf0f4074bf6ce4b4db947d64cfe22
MarsStealer
eb579ae693c1d8ff7a81d0cbf6263a217aa515b67b0e665f98fd893a0e2d502a
MarsStealer
ee6febde7033e6de005058d3142c338ec996f5ede9fe0f39b0624e1ec0271326
MarsStealer
error
MarsStealer
+ 17 additional samples on MalwareBazaar
Result
Malware family:
stealc
Create hunting rule
Score:
  10/10
Tags:
family:stealc botnet:tale credential_access discovery evasion spyware stealer
Link:
https://tria.ge/reports/241103-1v2s5swala/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of WriteProcessMemory
Browser Information Discovery
Program crash
System Location Discovery: System Language Discovery
Suspicious use of NtSetInformationThreadHideFromDebugger
Checks installed software on the system
Checks BIOS information in registry
Identifies Wine through registry keys
Loads dropped DLL
Reads user/profile data of web browsers
Uses browser remote debugging
Identifies VirtualBox via ACPI registry values (likely anti-VM)
Stealc
Stealc family
Malware Config
C2 Extraction:
http://185.215.113.206
Verdict:
Malicious
Tags:
stealc
YARA:
n/a
Link:
https://app.threat.zone/submission/791c6c44-f3fc-4b68-bbb7-d8b1058ff4e5
Unpacked files
SH256 hash:
81a4f37c5495800b7cc46aea6535d9180dadb5c151db6f1fd1968d1cd8c1eeb4
MD5 hash:
eda18948a989176f4eebb175ce806255
SHA1 hash:
ff22a3d5f5fb705137f233c36622c79eab995897
Link:
https://www.unpac.me/results/5cb18cfb-45ec-47ba-87f9-36999fc82c32/
SH256 hash:
d54ae8002480ced21f498a0f12814b074e8dd1d4da6870d2ab7463dc4ba47cd5
MD5 hash:
807cc130ce3101937091ac4b0c854b10
SHA1 hash:
9abb21eae3c57ed57c53db9d42c6c6fc7ffc5e78
Detections:
stealc
Create hunting rule
win_stealc_w0
Create hunting rule
win_stealc_a0
Create hunting rule
detect_Mars_Stealer
Create hunting rule
Link:
https://www.unpac.me/results/5cb18cfb-45ec-47ba-87f9-36999fc82c32/
SH256 hash:
b3a3da0ff549b2e4bbbe5c230120617bb6f21d7344a79e28bab2e6cc89e5ca76
MD5 hash:
b8732b3b75df20d425b551b864275e1e
SHA1 hash:
ce159a0b5f49be75ed8da2d37cd4083a6a2564b3
Link:
https://www.unpac.me/results/5cb18cfb-45ec-47ba-87f9-36999fc82c32/
Malware family:
Stealc
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b3a3da0ff549/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/b3a3da0ff549b2e4bbbe5c230120617bb6f21d7344a79e28bab2e6cc89e5ca76

File information

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

Web download

MarsStealer

Executable exe b3a3da0ff549b2e4bbbe5c230120617bb6f21d7344a79e28bab2e6cc89e5ca76

(this sample)

  
Dropped by
Amadey
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3273391/

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 (HIGH_ENTROPY_VA)high
CHECK_NXMissing Non-Executable Memory Protectioncritical

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