Analysis

  • max time kernel
    146s
  • max time network
    30s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    21-02-2023 07:54

General

  • Target

    Zip/7z2201-x64.exe

  • Size

    1.5MB

  • MD5

    a6a0f7c173094f8dafef996157751ecf

  • SHA1

    c0dcae7c4c80be25661d22400466b4ea074fc580

  • SHA256

    b055fee85472921575071464a97a79540e489c1c3a14b9bdfbdbab60e17f36e4

  • SHA512

    965d43f06d104bf6707513c459f18aaf8b049f4a043643d720b184ed9f1bb6c929309c51c3991d5aaff7b9d87031a7248ee3274896521abe955d0e49f901ac94

  • SSDEEP

    24576:mGIyixBMj+/A2d+UKnvT+LwZWj7iDDVVYrz0rbzGTw3DoA/sk6smE:mGbj+/BpKnvyIxVV/XDoAfmE

Malware Config

Signatures

  • Loads dropped DLL 1 IoCs
  • Registers COM server for autorun 1 TTPs 3 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 20 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Zip\7z2201-x64.exe
    "C:\Users\Admin\AppData\Local\Temp\Zip\7z2201-x64.exe"
    1⤵
    • Loads dropped DLL
    • Registers COM server for autorun
    • Drops file in Program Files directory
    • Modifies registry class
    • Suspicious use of FindShellTrayWindow
    PID:1336
  • C:\Windows\explorer.exe
    "C:\Windows\explorer.exe"
    1⤵
      PID:1680
    • C:\Windows\system32\AUDIODG.EXE
      C:\Windows\system32\AUDIODG.EXE 0x554
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1652
    • C:\Windows\explorer.exe
      "C:\Windows\explorer.exe"
      1⤵
        PID:548

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

      • \Program Files\7-Zip\7zFM.exe

        Filesize

        935KB

        MD5

        d36deceeb4c9645aab2ded86608d090b

        SHA1

        912f4658c4b046fbadd084912f9126cb1ae3737b

        SHA256

        018d74ff917692124dee0a8a7e6302aecd219d79b049ad95f2f4eedea41b4a45

        SHA512

        9752a9e57dd2e6cd454ba6c2d041d884369734c2b62c53d3ec4854731c398cd6e25ac75f7a55cda9d4b4c2efb074cb2e6efcbf3080cd8cc7d9bc8c9a25f62ff2