Analysis

  • max time kernel
    141s
  • max time network
    139s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/05/2024, 11:23

General

  • Target

    2024-05-09_0aa8386191d0c64ac41c027af4a304f5_cryptolocker.exe

  • Size

    38KB

  • MD5

    0aa8386191d0c64ac41c027af4a304f5

  • SHA1

    c99a1e7bd662733ef73f52aeb64b81a82e804b88

  • SHA256

    3b0f578801978c3bec89bdb034de465d1550ad60da0bf5cf449043d89ee14076

  • SHA512

    f1173e623349b463939b9617a2b62042924b2214eaf63f7df3a2bf9c91914bef32be748f7d213e6524d734b9af0a96126d24a1d687aa4d01707b4b749cf511c3

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLenf8j:ZzFbxmLPWQMOtEvwDpjLefw

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 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 10 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-09_0aa8386191d0c64ac41c027af4a304f5_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-09_0aa8386191d0c64ac41c027af4a304f5_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3524
    • 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:2944

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          38KB

          MD5

          cfd331fa895fe837027221c7e6112481

          SHA1

          db5204e8f3d78c85f819f757e21b7927fda699bf

          SHA256

          a59336500a3f77977e7c6fc5ab12a778cd49d5f041da391b38c238496acdfce6

          SHA512

          b9f85805f13cf02871c954ca6222624a139b1029c9890e7747ee1b668cdeee3ee5d3a7001a80648dfa25981b9bd0ed6790c4d7e915ef71f633025518a446bd63

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/2944-19-0x0000000002080000-0x0000000002086000-memory.dmp

          Filesize

          24KB

        • memory/2944-25-0x00000000006B0000-0x00000000006B6000-memory.dmp

          Filesize

          24KB

        • memory/3524-0-0x0000000000450000-0x0000000000453000-memory.dmp

          Filesize

          12KB

        • memory/3524-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/3524-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/3524-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/3524-18-0x0000000000450000-0x0000000000453000-memory.dmp

          Filesize

          12KB