Analysis

  • max time kernel
    185s
  • max time network
    190s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/10/2022, 02:43

General

  • Target

    b0b0f1477c8d7752a5089083806fb583b8b0d64a275454eef2ddfd944ad0a6ee.exe

  • Size

    192KB

  • MD5

    624125a1de0e915520e2ec60c921e610

  • SHA1

    5c49c67938fac549b8509e495ad5d844a2a39b20

  • SHA256

    b0b0f1477c8d7752a5089083806fb583b8b0d64a275454eef2ddfd944ad0a6ee

  • SHA512

    1b46bbd04fdd657ac2f166b7bc9de10dec5cf0b3176f42551d9d226cff614801f1241ee009b717b87b844e1727913c21a5658944f80ea5e312e12a2c5d35fab3

  • SSDEEP

    3072:4jjLIxdvKuGr7t5qCRFSoRQg/yqq9Kf5L/SV5qK:YiVCRFSoRQNC5L/hK

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 29 IoCs
  • 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\b0b0f1477c8d7752a5089083806fb583b8b0d64a275454eef2ddfd944ad0a6ee.exe
    "C:\Users\Admin\AppData\Local\Temp\b0b0f1477c8d7752a5089083806fb583b8b0d64a275454eef2ddfd944ad0a6ee.exe"
    1⤵
    • Modifies visiblity of hidden/system files in Explorer
    • Checks computer location settings
    • Adds Run key to start application
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2168
    • C:\Users\Admin\ciuuzi.exe
      "C:\Users\Admin\ciuuzi.exe"
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:3328
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:2772

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\ciuuzi.exe

      Filesize

      192KB

      MD5

      624125a1de0e915520e2ec60c921e610

      SHA1

      5c49c67938fac549b8509e495ad5d844a2a39b20

      SHA256

      b0b0f1477c8d7752a5089083806fb583b8b0d64a275454eef2ddfd944ad0a6ee

      SHA512

      1b46bbd04fdd657ac2f166b7bc9de10dec5cf0b3176f42551d9d226cff614801f1241ee009b717b87b844e1727913c21a5658944f80ea5e312e12a2c5d35fab3

    • C:\Users\Admin\ciuuzi.exe

      Filesize

      192KB

      MD5

      624125a1de0e915520e2ec60c921e610

      SHA1

      5c49c67938fac549b8509e495ad5d844a2a39b20

      SHA256

      b0b0f1477c8d7752a5089083806fb583b8b0d64a275454eef2ddfd944ad0a6ee

      SHA512

      1b46bbd04fdd657ac2f166b7bc9de10dec5cf0b3176f42551d9d226cff614801f1241ee009b717b87b844e1727913c21a5658944f80ea5e312e12a2c5d35fab3