Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/05/2024, 08:27

General

  • Target

    2024-05-24_3b55c7f471d1c618ff38b8ae96f79965_cryptolocker.exe

  • Size

    49KB

  • MD5

    3b55c7f471d1c618ff38b8ae96f79965

  • SHA1

    17e6323260a6e459320f786376985ffc862032e5

  • SHA256

    b8965e36f0655683f19bde948c5e6531fa096149a389f12f988eff23cde52df7

  • SHA512

    245de72ceb91f5337838b60f968c39090d82ae96bfec91ac8f5cff627a9b5ffc4dc51d256444d45f02655ea41e34e028ee49102d4726f039e4f94134bcac84dc

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4/Uth8igNrr42A7n0FmB0nw:vj+jsMQMOtEvwDpj5HczerLO04Bj

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 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\2024-05-24_3b55c7f471d1c618ff38b8ae96f79965_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-24_3b55c7f471d1c618ff38b8ae96f79965_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4664
    • 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:3764

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          49KB

          MD5

          a347ad2522763f58594aaa7ca64d4900

          SHA1

          6bf3e8996a057624955e14ef6d7997d0f11c04c4

          SHA256

          7bd2156f592d85e7bedb5e75b709adee91291439acdb96777220f087af47f76f

          SHA512

          b40ad02d43b342d947933737e69f3fee02ac63560829ef14687bf05d6e55a1bd121127549e7a4f15e74a62c84c43ddc96054f634c98ca7086e63233d741f86a4

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/3764-17-0x00000000005D0000-0x00000000005D6000-memory.dmp

          Filesize

          24KB

        • memory/3764-23-0x00000000005B0000-0x00000000005B6000-memory.dmp

          Filesize

          24KB

        • memory/4664-0-0x0000000000520000-0x0000000000526000-memory.dmp

          Filesize

          24KB

        • memory/4664-1-0x0000000000680000-0x0000000000686000-memory.dmp

          Filesize

          24KB

        • memory/4664-8-0x0000000000520000-0x0000000000526000-memory.dmp

          Filesize

          24KB