Analysis

  • max time kernel
    144s
  • max time network
    159s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/10/2023, 17:33

General

  • Target
    NEAS.NEAS9381b3e371e30b6ba9276a754c2e002cc1cdc38479f9053288c2fd9c79f1db51exeexe_JC.exe
  • Size 14.3MB
  • Sample231017-v4v43aef3x
  • SHA256 9381b3e371e30b6ba9276a754c2e002cc1cdc38479f9053288c2fd9c79f1db51
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • marsstealer

Botnet
  • Default

C2
  • kenesrakishev.net/wp-cron.php

Signatures

  • Mars Stealer

    An infostealer written in C++ based on other infostealers.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\NEAS.NEAS9381b3e371e30b6ba9276a754c2e002cc1cdc38479f9053288c2fd9c79f1db51exeexe_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\NEAS.NEAS9381b3e371e30b6ba9276a754c2e002cc1cdc38479f9053288c2fd9c79f1db51exeexe_JC.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3432
    • C:\Users\Admin\AppData\Roaming\24RZ.exe
      "C:\Users\Admin\AppData\Roaming\24RZ.exe"
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      PID:4320

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        24RZ.exe

        • Path C:\Users\Admin\AppData\Roaming\24RZ.exe
        • Size 159KB
        • SHA256 ae67e66737d5d3618a07d71311b519b08b320945d14dc75e06969e0f7a2862de
        • MD5 SHA1 SHA512 SSDEEP

        24RZ.exe

        • Path C:\Users\Admin\AppData\Roaming\24RZ.exe
        • Size 159KB
        • SHA256 ae67e66737d5d3618a07d71311b519b08b320945d14dc75e06969e0f7a2862de
        • MD5 SHA1 SHA512 SSDEEP

        24RZ.exe

        • Path C:\Users\Admin\AppData\Roaming\24RZ.exe
        • Size 159KB
        • SHA256 ae67e66737d5d3618a07d71311b519b08b320945d14dc75e06969e0f7a2862de
        • MD5 SHA1 SHA512 SSDEEP

        memory/3432-0-0x0000000074BA0000-0x0000000075350000-memory.dmp

        memory/3432-1-0x0000000000460000-0x00000000004D4000-memory.dmp

        memory/3432-2-0x0000000074BA0000-0x0000000075350000-memory.dmp

        memory/3432-3-0x0000000004E60000-0x0000000004E70000-memory.dmp

        memory/3432-9-0x0000000004E60000-0x0000000004E70000-memory.dmp

        memory/3432-15-0x0000000074BA0000-0x0000000075350000-memory.dmp

        memory/4320-12-0x0000000000400000-0x000000000043D000-memory.dmp

        memory/4320-25-0x0000000000400000-0x000000000043D000-memory.dmp