MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b2fe8c8268889862ea8689e967c2a9f7920ebe74ceaf1997cc28bffe8b4ce2a5. 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: 16


Intelligence 16 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b2fe8c8268889862ea8689e967c2a9f7920ebe74ceaf1997cc28bffe8b4ce2a5
SHA3-384 hash: 4b2a71386e0eaed4c177e00c43f7629fe82f9f6c94bc9a93137f15f03b566a4d081df372b59e99da32731b8ac3f66799
SHA1 hash: b26a72560308974b1ce6ed876997c1678717c333
MD5 hash: ee99bcceb7e05794df7fb40ea5fecde5
humanhash: hamper-winter-river-charlie
File name:file
Download: download sample
Signature MarsStealer
Create hunting rule
File size:1'798'656 bytes
First seen:2024-09-08 03:58:03 UTC
Last seen:2024-09-08 05:17:41 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 24576:cvvOe8arN6vXoIjo4DNwYdli6Uq+Pqfi+07odS3DXSE4l2aRlZ2lDSn0FD3hHx/N:wOe8ap6tdpUbPqCGS3Db4l7RiwAh3l
TLSH T183853314658399FFDF6B03B21AD216953BD1042D211BFE1D4F2089B7B3BB0E98DE6498
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://31.41.244.11/steam/random.exe

Intelligence

File Origin
# of uploads :
4
# of downloads :
415
Origin country :
US US
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
file
Verdict:
Malicious activity
Analysis date:
2024-09-08 04:01:37 UTC
Tags:
stealer stealc
Link:
https://app.any.run/tasks/d6e0e065-ed03-4307-9193-c95970a7065e

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.PWSX-gen.18363.13299.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
94.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66dd21084b4e27c595e03a33
Tags:
Execution Infostealer Network Stealth Trojan
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Searching for analyzing tools
Searching for the window
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:
anti-vm microsoft_visual_cc packed
Link:
https://www.filescan.io/uploads/66dd20ceee4db382bc7b388f/reports/9edc10fc-bc9c-4639-95af-e28b6f911d9a/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/b2fe8c8268889862ea8689e967c2a9f7920ebe74ceaf1997cc28bffe8b4ce2a5
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/5a89cd11-4ed3-48a7-80fd-daebe4bb41be
Result
Threat name:
Amadey, Stealc, Vidar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1507003
Signature
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
Binary is likely a compiled AutoIt script file
C2 URLs / IPs found in malware configuration
Detected unpacking (changes PE section rights)
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
PE file contains section with special chars
Sigma detected: New RUN Key Pointing to Suspicious Folder
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 Powershell download and execute
Yara detected Stealc
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1507003 Sample: file.exe Startdate: 08/09/2024 Architecture: WINDOWS Score: 100 53 Suricata IDS alerts for network traffic 2->53 55 Found malware configuration 2->55 57 Antivirus detection for URL or domain 2->57 59 12 other signatures 2->59 8 file.exe 36 2->8         started        13 svoutse.exe 1 21 2->13         started        15 svoutse.exe 2->15         started        17 2 other processes 2->17 process3 dnsIp4 47 185.215.113.103, 49730, 49744, 49749 WHOLESALECONNECTIONSNL Portugal 8->47 49 31.41.244.11, 49737, 49740, 49742 AEROEXPRESS-ASRU Russian Federation 8->49 37 C:\Users\user\AppData\...\softokn3[1].dll, PE32 8->37 dropped 39 C:\Users\user\AppData\Local\...\random[1].exe, PE32 8->39 dropped 41 C:\Users\user\AppData\Local\...\nss3[1].dll, PE32 8->41 dropped 43 11 other files (7 malicious) 8->43 dropped 81 Detected unpacking (changes PE section rights) 8->81 83 Tries to steal Mail credentials (via file / registry access) 8->83 85 Found many strings related to Crypto-Wallets (likely being stolen) 8->85 99 5 other signatures 8->99 19 cmd.exe 1 8->19         started        51 31.41.244.10, 49739, 49741, 49743 AEROEXPRESS-ASRU Russian Federation 13->51 87 Hides threads from debuggers 13->87 89 Tries to detect sandboxes / dynamic malware analysis system (registry check) 13->89 91 Tries to detect process monitoring tools (Task Manager, Process Explorer etc.) 13->91 21 a1128c509d.exe 13 13->21         started        24 bb15672844.exe 13 13->24         started        26 cd5b4bf4eb.exe 13->26         started        93 Antivirus detection for dropped file 15->93 95 Machine Learning detection for dropped file 15->95 97 Tries to evade debugger and weak emulator (self modifying code) 15->97 file5 signatures6 process7 signatures8 28 AFHDAEGHDG.exe 4 19->28         started        32 conhost.exe 19->32         started        67 Detected unpacking (changes PE section rights) 21->67 69 Tries to detect sandboxes and other dynamic analysis tools (window names) 21->69 71 Tries to evade debugger and weak emulator (self modifying code) 21->71 73 Hides threads from debuggers 24->73 75 Tries to detect sandboxes / dynamic malware analysis system (registry check) 24->75 77 Tries to detect process monitoring tools (Task Manager, Process Explorer etc.) 24->77 79 Binary is likely a compiled AutoIt script file 26->79 process9 file10 45 C:\Users\user\AppData\Local\...\svoutse.exe, PE32 28->45 dropped 101 Antivirus detection for dropped file 28->101 103 Detected unpacking (changes PE section rights) 28->103 105 Machine Learning detection for dropped file 28->105 107 5 other signatures 28->107 34 svoutse.exe 28->34         started        signatures11 process12 signatures13 61 Hides threads from debuggers 34->61 63 Tries to detect sandboxes / dynamic malware analysis system (registry check) 34->63 65 Tries to detect process monitoring tools (Task Manager, Process Explorer etc.) 34->65
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b2fe8c8268889862ea8689e967c2a9f7920ebe74ceaf1997cc28bffe8b4ce2a5
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b2fe8c8268889862ea8689e967c2a9f7920ebe74ceaf1997cc28bffe8b4ce2a5/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Malicious
First seen:
2024-09-08 03:59:06 UTC
File Type:
PE (Exe)
AV detection:
13 of 38 (34.21%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wl7izatircmgf2ugrhuwpqvj66ja5ptuz2xrtf6mfc775c2m4ksq._file
Verdict:
unknown
Result
Malware family:
stealc
Create hunting rule
Score:
  10/10
Tags:
family:stealc botnet:rave discovery evasion stealer
Link:
https://tria.ge/reports/240908-ejjyasvdnj/
Behaviour
Suspicious behavior: EnumeratesProcesses
System Location Discovery: System Language Discovery
Suspicious use of NtSetInformationThreadHideFromDebugger
Checks BIOS information in registry
Identifies Wine through registry keys
Identifies VirtualBox via ACPI registry values (likely anti-VM)
Stealc
Malware Config
C2 Extraction:
http://185.215.113.103
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/de27d8f9-461d-4b72-8aee-974fd25e54ae
Unpacked files
SH256 hash:
ae9d8d99ca878f30eb2e8f14ceb1813b3311fef4e1c3b138c646907518ab37b9
MD5 hash:
2fd498c3cec3c2f09a10fed7f3c49a34
SHA1 hash:
3744890b3e167403d5505e8e0b7c10f7668fdbe6
Detections:
stealc
Create hunting rule
win_stealc_w0
Create hunting rule
win_stealc_a0
Create hunting rule
Link:
https://www.unpac.me/results/780ba97d-2946-4b66-907a-6ead8f9aebe1/
SH256 hash:
b2fe8c8268889862ea8689e967c2a9f7920ebe74ceaf1997cc28bffe8b4ce2a5
MD5 hash:
ee99bcceb7e05794df7fb40ea5fecde5
SHA1 hash:
b26a72560308974b1ce6ed876997c1678717c333
Link:
https://www.unpac.me/results/780ba97d-2946-4b66-907a-6ead8f9aebe1/
Malware family:
Stealc
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b2fe8c826888/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/b2fe8c8268889862ea8689e967c2a9f7920ebe74ceaf1997cc28bffe8b4ce2a5

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:Detect_Malicious_VBScript_Base64
Create hunting rule
Author:daniyyell
Description:Detects malicious VBScript patterns, including Base64 decoding, file operations, and PowerShell.
Rule name:vmdetect
Create hunting rule
Author:nex
Description:Possibly employs anti-virtualization techniques

File information

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

Web download

MarsStealer

Executable exe b2fe8c8268889862ea8689e967c2a9f7920ebe74ceaf1997cc28bffe8b4ce2a5

(this sample)

  
Dropped by
Amadey
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3114824/
  
URLhaus
https://urlhaus.abuse.ch/url/3120900/

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

Comments