Analysis

  • max time kernel
    133s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/06/2024, 05:22

General

  • Target

    2024-06-02_433f509bc1fc1406502e9956e4f11173_cryptolocker.exe

  • Size

    63KB

  • MD5

    433f509bc1fc1406502e9956e4f11173

  • SHA1

    2de2756c1c3586bac1ed6d0c829ac61f0ecbda64

  • SHA256

    535f25c3461611dcda4cf6d5638d2cbff0b113cb32519c506616134f4be7fece

  • SHA512

    d52eaacbbdcf5d81613d3437c0f15f21787988a0c393b0705f22be7cfdf896d5e3489a19fa8ed8d546b0ca8425d8231a13d6667ab45d5bf2df5e76f33f79c322

  • SSDEEP

    768:3Uz7yVEhs9+Hs1SQtOOtEvwDpjO9+4hdCY8EQMjpi/Wpi3B3URiLqCyLuAx8XG9K:3P+HsMQMOtEvwDpjoHy7B3g9CWuAxW/

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • 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).

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-02_433f509bc1fc1406502e9956e4f11173_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-02_433f509bc1fc1406502e9956e4f11173_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4472
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies system certificate store
      PID:2464

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          63KB

          MD5

          c7975a0fde24ba866d23217709349bf9

          SHA1

          a4ee2eded648674a61f9bea1014727fba5e3b2ad

          SHA256

          d2529cbd5401bb5b7ddebce11803936782fb1628d946de0688bd5790317a606f

          SHA512

          ef5df41e99e43991cc7055454e2c11f9fcadee98e70d94c19eeac4b13d23aa5234d17eca67f2afa6b000c95bee9b0b9ab69ab95a60bfcfea7276c9a10b18e6de

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/2464-18-0x0000000000500000-0x000000000050B000-memory.dmp

          Filesize

          44KB

        • memory/2464-20-0x00000000006D0000-0x00000000006D6000-memory.dmp

          Filesize

          24KB

        • memory/2464-26-0x00000000006B0000-0x00000000006B6000-memory.dmp

          Filesize

          24KB

        • memory/2464-51-0x0000000000500000-0x000000000050B000-memory.dmp

          Filesize

          44KB

        • memory/4472-0-0x0000000000500000-0x000000000050B000-memory.dmp

          Filesize

          44KB

        • memory/4472-1-0x0000000002050000-0x0000000002056000-memory.dmp

          Filesize

          24KB

        • memory/4472-2-0x0000000002070000-0x0000000002076000-memory.dmp

          Filesize

          24KB

        • memory/4472-9-0x0000000002050000-0x0000000002056000-memory.dmp

          Filesize

          24KB

        • memory/4472-16-0x0000000000500000-0x000000000050B000-memory.dmp

          Filesize

          44KB