Analysis

  • max time kernel
    150s
  • max time network
    114s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    11/06/2021, 14:41

General

  • Target

    213d6a4c5a5c0045550fa2b822434c51dfd1b6f573c1d1bf22d9eda4f7ab2259.bin.sample.exe

  • Size

    235KB

  • MD5

    07f482fdc70a699d02495c8b4dc1ee63

  • SHA1

    8c536b4c8a9a810635daa506c67f70180b048c83

  • SHA256

    213d6a4c5a5c0045550fa2b822434c51dfd1b6f573c1d1bf22d9eda4f7ab2259

  • SHA512

    5a8ec11ed23b6e17e894965cf3fab92ae55e7408ee1f6bd00a59ba43c61648cd9d9fd7894288427a14446d3d9bc59c66b0416d57f7de9cd626d64e575ca14d91

Malware Config

Signatures

  • xmrig

    XMRig is a high performance, open source, cross platform CPU/GPU miner.

  • Drops file in Drivers directory 64 IoCs
  • Modifies extensions of user files 2 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Drops desktop.ini file(s) 21 IoCs
  • Drops file in System32 directory 64 IoCs
  • Modifies registry class 11 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 17 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\213d6a4c5a5c0045550fa2b822434c51dfd1b6f573c1d1bf22d9eda4f7ab2259.bin.sample.exe
    "C:\Users\Admin\AppData\Local\Temp\213d6a4c5a5c0045550fa2b822434c51dfd1b6f573c1d1bf22d9eda4f7ab2259.bin.sample.exe"
    1⤵
    • Drops file in Drivers directory
    • Modifies extensions of user files
    • Drops desktop.ini file(s)
    • Drops file in System32 directory
    PID:1704
  • C:\Windows\system32\OpenWith.exe
    C:\Windows\system32\OpenWith.exe -Embedding
    1⤵
    • Modifies registry class
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4036
    • C:\Windows\system32\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\WaitClear.DVR-MS.ChupaCabra
      2⤵
      • Opens file in notepad (likely ransom note)
      • Suspicious use of FindShellTrayWindow
      PID:3908
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:3364

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1704-114-0x0000000000240000-0x0000000000241000-memory.dmp

      Filesize

      4KB

    • memory/1704-116-0x000000001AE60000-0x000000001AE62000-memory.dmp

      Filesize

      8KB