Analysis

  • max time kernel
    133s
  • max time network
    126s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/08/2024, 06:51

General

  • Target

    2024-08-25_a576ec355daf18bb293ef62b9e856fa1_cryptolocker.exe

  • Size

    41KB

  • MD5

    a576ec355daf18bb293ef62b9e856fa1

  • SHA1

    e87ce617cdd48d9dfd9150419a26fffd3e75945d

  • SHA256

    ca9d2e2ff7f593af66b8daed91017676a5217d565727af0a757b81e44aae5711

  • SHA512

    9ec6b1ebcda46347fe24fcf6327e267b3e5d951915d2e6419ca7cbbb0ba30598bbbdbb784f9a46b008c2836a3fba6353eed21bf0034b109f78000561ba8cbeb7

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLeJAsKuD+8:ZzFbxmLPWQMOtEvwDpjLeJAsKc5

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\2024-08-25_a576ec355daf18bb293ef62b9e856fa1_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-08-25_a576ec355daf18bb293ef62b9e856fa1_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:760
    • 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:3928

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          41KB

          MD5

          53fea9b14aecd4d696965d8b1d5d8765

          SHA1

          f00ee7cd125547597b36a338e5254c7c49af97e0

          SHA256

          a229862a1acd729dedddf8e181ede7ce518ffadc994e109bcf3d688b640fbe40

          SHA512

          1991bc576570fcb8b7e556b6bec13b9468b9eece3fc31fc0b6e66d1f79bf38ed8ffa1091f64337bbb46f31a9599b5a8a4bff4e2e9ad1cfa4bbf5102ebb1e1710

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/760-0-0x00000000004A0000-0x00000000004A3000-memory.dmp

          Filesize

          12KB

        • memory/760-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

          Filesize

          24KB

        • memory/760-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

          Filesize

          24KB

        • memory/760-3-0x00000000006E0000-0x00000000006E6000-memory.dmp

          Filesize

          24KB

        • memory/760-17-0x00000000004A0000-0x00000000004A3000-memory.dmp

          Filesize

          12KB

        • memory/3928-19-0x00000000006A0000-0x00000000006A6000-memory.dmp

          Filesize

          24KB

        • memory/3928-20-0x00000000006C0000-0x00000000006C6000-memory.dmp

          Filesize

          24KB