MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3a40829c55f4ec87b90ef71e017a7c9f2fbe12f81e0ac4dbac6157d2dfb1f969. 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 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3a40829c55f4ec87b90ef71e017a7c9f2fbe12f81e0ac4dbac6157d2dfb1f969
SHA3-384 hash: 22a6e0a7fbe50a49801313b0170816f5f0fa0ebd5516cd9b6419e9c96afa567a26e94f763ce919235c3548b8ba61befe
SHA1 hash: 71a1821737417c3b3cf665361203532893413e61
MD5 hash: e9e08496a40c5a11165101ac24017cba
humanhash: pennsylvania-single-kentucky-queen
File name:file
Download: download sample
Signature MarsStealer
Create hunting rule
File size:2'101'760 bytes
First seen:2024-11-03 15:38:06 UTC
Last seen:2024-11-03 17:20:06 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:O/oAL2TPzCrmYAr9nwiihSG77c7lL3yMqk132U0rzm1Fktj:ELizCrmYA1wiihR7alTf32U0rSFk
TLSH T175A533E65E71193DDFD4C3701A2E3A9F36EB199AE22350BE74206432DF6230EF520599
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 :
478
Origin country :
US US
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
file
Verdict:
Malicious activity
Analysis date:
2024-11-03 15:41:51 UTC
Tags:
lumma stealer stealc loader
Link:
https://app.any.run/tasks/0523c5e8-dfa2-421a-830c-c7eb96c6269a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.BackdoorX-gen.6704.10930.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
70%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6727991c8d23d90491332427
Tags:
small spam hype sage
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Searching for analyzing tools
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/672799174a1409acc6fba1a7/reports/89e1e0e6-6d71-48a8-ab71-4a17698fcd76/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/3a40829c55f4ec87b90ef71e017a7c9f2fbe12f81e0ac4dbac6157d2dfb1f969
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:
Unknown
Link:
https://analyze.intezer.com/analyses/304763ec-5f28-406f-9fe6-57f1527523ce
Result
Threat name:
Stealc
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1548034
Signature
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
Attempt to bypass Chrome Application-Bound Encryption
C2 URLs / IPs found in malware configuration
Detected unpacking (changes PE section rights)
Found malware configuration
Hides threads from debuggers
Machine Learning detection for sample
Monitors registry run keys for changes
PE file contains section with special chars
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 browser information (history, passwords, etc)
Yara detected Powershell download and execute
Yara detected Stealc
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1548034 Sample: file.exe Startdate: 03/11/2024 Architecture: WINDOWS Score: 100 44 Suricata IDS alerts for network traffic 2->44 46 Found malware configuration 2->46 48 Antivirus / Scanner detection for submitted sample 2->48 50 7 other signatures 2->50 7 file.exe 17 2->7         started        12 msedge.exe 8 2->12         started        process3 dnsIp4 38 185.215.113.206, 49704, 49727, 80 WHOLESALECONNECTIONSNL Portugal 7->38 40 127.0.0.1 unknown unknown 7->40 32 C:\ProgramData\chrome.dll, PE32 7->32 dropped 52 Detected unpacking (changes PE section rights) 7->52 54 Attempt to bypass Chrome Application-Bound Encryption 7->54 56 Tries to detect sandboxes and other dynamic analysis tools (window names) 7->56 58 6 other signatures 7->58 14 msedge.exe 2 10 7->14         started        17 chrome.exe 8 7->17         started        20 WerFault.exe 19 16 7->20         started        23 msedge.exe 12->23         started        file5 signatures6 process7 dnsIp8 60 Monitors registry run keys for changes 14->60 25 msedge.exe 14->25         started        34 192.168.2.5, 443, 49703, 49704 unknown unknown 17->34 36 239.255.255.250 unknown Reserved 17->36 27 chrome.exe 17->27         started        30 C:\ProgramData\Microsoft\...\Report.wer, Unicode 20->30 dropped file9 signatures10 process11 dnsIp12 42 www.google.com 142.250.186.100, 443, 49708, 49709 GOOGLEUS United States 27->42
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/3a40829c55f4ec87b90ef71e017a7c9f2fbe12f81e0ac4dbac6157d2dfb1f969
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/3a40829c55f4ec87b90ef71e017a7c9f2fbe12f81e0ac4dbac6157d2dfb1f969/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2024-11-03 15:39:06 UTC
File Type:
PE (Exe)
AV detection:
15 of 38 (39.47%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=hjaifhcv6twipoio64pac6t4t4x34exydyfmjw5mmfl5fx5r7fuq._file
Result
Malware family:
stealc
Create hunting rule
Score:
  10/10
Tags:
family:stealc botnet:tale discovery evasion stealer
Link:
https://tria.ge/reports/241103-s3lswsybqj/
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
Stealc family
Malware Config
C2 Extraction:
http://185.215.113.206
Verdict:
Malicious
Tags:
stealc
YARA:
n/a
Link:
https://app.threat.zone/submission/78002167-7070-440d-9ce7-1cfdd9d1aa11
Unpacked files
SH256 hash:
81a4f37c5495800b7cc46aea6535d9180dadb5c151db6f1fd1968d1cd8c1eeb4
MD5 hash:
eda18948a989176f4eebb175ce806255
SHA1 hash:
ff22a3d5f5fb705137f233c36622c79eab995897
Link:
https://www.unpac.me/results/4f284637-247a-4238-871b-3083801f2f97/
SH256 hash:
4ca7273b0e8eb2783deecce501df32f8c92ee2eb16c2f99db6fc0f4d6a647740
MD5 hash:
56a0b8a66333865e6f58dde14bb84895
SHA1 hash:
cb652f62a177d74159914ef82bff1431fbf57f19
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/4f284637-247a-4238-871b-3083801f2f97/
SH256 hash:
3a40829c55f4ec87b90ef71e017a7c9f2fbe12f81e0ac4dbac6157d2dfb1f969
MD5 hash:
e9e08496a40c5a11165101ac24017cba
SHA1 hash:
71a1821737417c3b3cf665361203532893413e61
Link:
https://www.unpac.me/results/4f284637-247a-4238-871b-3083801f2f97/
Malware family:
Stealc
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/3a40829c55f4/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/3a40829c55f4ec87b90ef71e017a7c9f2fbe12f81e0ac4dbac6157d2dfb1f969

File information

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

Web download

MarsStealer

Executable exe 3a40829c55f4ec87b90ef71e017a7c9f2fbe12f81e0ac4dbac6157d2dfb1f969

(this sample)

  
Dropped by
Amadey
  
Delivery method
Distributed via web download
  
Dropped by
Amadey
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3079150/
  
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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