Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/08/2024, 00:24

General

  • Target

    2024-08-29_05a2af1a3fdcd719abb7e1c7dd9388b6_cryptolocker.exe

  • Size

    63KB

  • MD5

    05a2af1a3fdcd719abb7e1c7dd9388b6

  • SHA1

    0546769fd8bc6421344099dc2593bb38def78532

  • SHA256

    a1e67de9e3f8668e6142a384453dfb871347a27e601d54a9def0069f16ec045d

  • SHA512

    43bc4392e58beb2da608349613265ac68fbf404c192d99e635e927406fbf6d95bf01992a2cf6caec674dbee115f880412e545313dcf5dccb903a2bfdc68b8d42

  • SSDEEP

    1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprgJN6tZdOyJ36ucNH:ZVxkGOtEvwDpjcaC

Score
7/10

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-08-29_05a2af1a3fdcd719abb7e1c7dd9388b6_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-08-29_05a2af1a3fdcd719abb7e1c7dd9388b6_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1444
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Modifies system certificate store
      PID:2284

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\misid.exe

          Filesize

          63KB

          MD5

          b7dc11029e4ed83eee366905cbe7f547

          SHA1

          3f875f97775c9456c88ed57536a15bf286e45987

          SHA256

          92d6bde0882ca6962af0e7a616020dfcd5d9684d1885dfd90dcf066df0735eb7

          SHA512

          fd0600097287bf2a3cfa280000a096174102c6aa313e96de5a5575da266d1e16cd826430b13c9c08736af800962e2de36455806ff275e3303d1c7ed45b91ef5b

        • C:\Users\Admin\AppData\Local\Temp\misids.exe

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/1444-0-0x00000000004E0000-0x00000000004E3000-memory.dmp

          Filesize

          12KB

        • memory/1444-1-0x0000000000660000-0x0000000000666000-memory.dmp

          Filesize

          24KB

        • memory/1444-2-0x0000000000660000-0x0000000000666000-memory.dmp

          Filesize

          24KB

        • memory/1444-3-0x00000000007D0000-0x00000000007D6000-memory.dmp

          Filesize

          24KB

        • memory/1444-18-0x00000000004E0000-0x00000000004E3000-memory.dmp

          Filesize

          12KB

        • memory/2284-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/2284-25-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB