Overview

overview

8

Static

static

3176a9e835...12.exe

windows7_x64

8

3176a9e835...12.exe

windows10_x64

8

Analysis

  • max time kernel
    146s
  • max time network
    184s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    23/08/2021, 03:01

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General

  • Target
    3176a9e835cc7bc05227443036f2a512.exe
  • Size 306KB
  • Sample210823-prfhfbgdp6
  • SHA256 2986b153f303df1a988cd38960bfa289c0e329f51b7d45bc96de8e100ebd6449
  • MD5 SHA1 SHA512
Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistence
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3176a9e835cc7bc05227443036f2a512.exe
    "C:\Users\Admin\AppData\Local\Temp\3176a9e835cc7bc05227443036f2a512.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1660
    • C:\Users\Admin\AppData\Local\Temp\bd1299733e\rnyuf.exe
      "C:\Users\Admin\AppData\Local\Temp\bd1299733e\rnyuf.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:1760
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders" /f /v Startup /t REG_SZ /d C:\Users\Admin\AppData\Local\Temp\bd1299733e\
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1532
        • C:\Windows\SysWOW64\reg.exe
          REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders" /f /v Startup /t REG_SZ /d C:\Users\Admin\AppData\Local\Temp\bd1299733e\
          4⤵
            PID:1456
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /Create /SC MINUTE /MO 1 /TN rnyuf.exe /TR "C:\Users\Admin\AppData\Local\Temp\bd1299733e\rnyuf.exe" /F
          3⤵
          • Creates scheduled task(s)
          PID:320
    • C:\Windows\system32\taskeng.exe
      taskeng.exe {818656FE-64DE-4EF3-A6BC-C6EDEF1063E8} S-1-5-21-2513283230-931923277-594887482-1000:MRBKYMNO\Admin:Interactive:[1]
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:780
      • C:\Users\Admin\AppData\Local\Temp\bd1299733e\rnyuf.exe
        C:\Users\Admin\AppData\Local\Temp\bd1299733e\rnyuf.exe
        2⤵
        • Executes dropped EXE
        PID:988
      • C:\Users\Admin\AppData\Local\Temp\bd1299733e\rnyuf.exe
        C:\Users\Admin\AppData\Local\Temp\bd1299733e\rnyuf.exe
        2⤵
        • Executes dropped EXE
        PID:1416

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          memory/988-78-0x0000000000400000-0x00000000023B7000-memory.dmp
          Download

          memory/1416-83-0x0000000000400000-0x00000000023B7000-memory.dmp
          Download

          memory/1660-60-0x0000000075281000-0x0000000075283000-memory.dmp
          Download

          memory/1660-66-0x0000000000400000-0x00000000023B7000-memory.dmp
          Download

          memory/1660-65-0x00000000002C0000-0x00000000002F3000-memory.dmp
          Download

          memory/1760-72-0x0000000000400000-0x00000000023B7000-memory.dmp
          Download