Analysis

  • max time kernel
    134s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08/05/2024, 04:41

General

  • Target

    2024-05-08_8d20e2978881dcbcfc9aa36f99307056_cryptolocker.exe

  • Size

    49KB

  • MD5

    8d20e2978881dcbcfc9aa36f99307056

  • SHA1

    d48221d54782d67481df72be0fafaf64eca6dc19

  • SHA256

    b6a079e1880775898afdf9dfab9f4f713139fd3f3c6c1fbe88d83648dee958fd

  • SHA512

    16bab8a545620c104713306b309100bfbd2e6e8d2428501d94ec69c5b76dfd85a262e544ac3c8c74796ba8e407a289f51464e40faeacd40c34a9c2539d9a464e

  • SSDEEP

    1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprqQ15x8rx:ZVxkGOtEvwDpjch

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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-08_8d20e2978881dcbcfc9aa36f99307056_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-08_8d20e2978881dcbcfc9aa36f99307056_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3052
    • 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:5080

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          49KB

          MD5

          0c031b115732b01b79f09214c8c511ca

          SHA1

          ba64c1881081645fda04d36f7dfec088a0701b45

          SHA256

          016768e9ca34d199b413e3d07c25878f8f6a9b76520e55019c57339f9e3ad192

          SHA512

          3c2d978192441f95e1649c54e9d84dd19d32c785b887cf33633307b1055c6d21df5531f4d754c10a00fd1f656ee505f6b566f580749c11f8d3715f4b06ee8ad4

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/3052-0-0x00000000004E0000-0x00000000004E3000-memory.dmp

          Filesize

          12KB

        • memory/3052-1-0x0000000000620000-0x0000000000626000-memory.dmp

          Filesize

          24KB

        • memory/3052-2-0x0000000000620000-0x0000000000626000-memory.dmp

          Filesize

          24KB

        • memory/3052-3-0x0000000000750000-0x0000000000756000-memory.dmp

          Filesize

          24KB

        • memory/3052-19-0x00000000004E0000-0x00000000004E3000-memory.dmp

          Filesize

          12KB

        • memory/5080-17-0x00000000004E0000-0x00000000004E3000-memory.dmp

          Filesize

          12KB

        • memory/5080-21-0x00000000006C0000-0x00000000006C6000-memory.dmp

          Filesize

          24KB

        • memory/5080-20-0x00000000006A0000-0x00000000006A6000-memory.dmp

          Filesize

          24KB