Analysis

  • max time kernel
    188s
  • max time network
    193s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07-12-2022 03:31

General

  • Target

    1654d222bb4996a25c2aa034646d6a7cd69e8c89289249186fd3f55d4879c0eb.exe

  • Size

    288KB

  • MD5

    074553c86014e2baa43c90f85e14d169

  • SHA1

    fad41dc20aa986a58adb45a36570a88eb4930ecb

  • SHA256

    1654d222bb4996a25c2aa034646d6a7cd69e8c89289249186fd3f55d4879c0eb

  • SHA512

    71655f39f598b5643ebc4213fa7c19dc72826be4a3147899b8c0594d11b2df415d0ed0cb72410a95779a087515d5ddf9c64c31348999833f9e1b3248d36d288c

  • SSDEEP

    6144:tMVuUE2lqKhG0wF+kAbUtshbrm3X+DLKlzNgGVRwZBf5Wg9w9CXvn1OHyaFvF+5s:t9VTJabvhfm3XJ1tipsLH

Score
10/10

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Adds Run key to start application 2 TTPs 28 IoCs
  • Maps connected drives based on registry 3 TTPs 4 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1654d222bb4996a25c2aa034646d6a7cd69e8c89289249186fd3f55d4879c0eb.exe
    "C:\Users\Admin\AppData\Local\Temp\1654d222bb4996a25c2aa034646d6a7cd69e8c89289249186fd3f55d4879c0eb.exe"
    1⤵
    • Modifies visiblity of hidden/system files in Explorer
    • Checks computer location settings
    • Adds Run key to start application
    • Maps connected drives based on registry
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4908
    • C:\Users\Admin\zuouhe.exe
      "C:\Users\Admin\zuouhe.exe"
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Executes dropped EXE
      • Adds Run key to start application
      • Maps connected drives based on registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:3784
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:408

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\zuouhe.exe

      Filesize

      288KB

      MD5

      074553c86014e2baa43c90f85e14d169

      SHA1

      fad41dc20aa986a58adb45a36570a88eb4930ecb

      SHA256

      1654d222bb4996a25c2aa034646d6a7cd69e8c89289249186fd3f55d4879c0eb

      SHA512

      71655f39f598b5643ebc4213fa7c19dc72826be4a3147899b8c0594d11b2df415d0ed0cb72410a95779a087515d5ddf9c64c31348999833f9e1b3248d36d288c

    • C:\Users\Admin\zuouhe.exe

      Filesize

      288KB

      MD5

      074553c86014e2baa43c90f85e14d169

      SHA1

      fad41dc20aa986a58adb45a36570a88eb4930ecb

      SHA256

      1654d222bb4996a25c2aa034646d6a7cd69e8c89289249186fd3f55d4879c0eb

      SHA512

      71655f39f598b5643ebc4213fa7c19dc72826be4a3147899b8c0594d11b2df415d0ed0cb72410a95779a087515d5ddf9c64c31348999833f9e1b3248d36d288c