Analysis

  • max time kernel
    141s
  • max time network
    142s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-05-2024 18:51

General

  • Target

    20240521bdaf33063061abd98c923be2067a65f2cryptolocker.exe

  • Size

    64KB

  • MD5

    bdaf33063061abd98c923be2067a65f2

  • SHA1

    f2a775f982f4b76e38d1bde8e169b92d84850129

  • SHA256

    87b8d69e335b4c6d9cc170e92ee73bd3120617e59886eac88b5f457fca7a08c2

  • SHA512

    7cfee482b74c22885f59645776d411a803c9d3a84d2ad638b91ae5cf6dd164f96b9f055728ff8c3f275f3d950eb7667b1ba0877de9f8ba03a673492cce885217

  • SSDEEP

    1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMTIzYf:TCjsIOtEvwDpj5HE/OUHnSMo

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).

  • Modifies system certificate store 2 TTPs 10 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\20240521bdaf33063061abd98c923be2067a65f2cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\20240521bdaf33063061abd98c923be2067a65f2cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4900
    • 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:732

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    64KB

    MD5

    925d27b381cc5e5cdee58ffa6e6909fa

    SHA1

    34b6a98681537c0f3547a66d0883fd4f4100d377

    SHA256

    cc6e2b70af28efbdfa5f5572892fa32c863d28227b34add73e479f29f3e20931

    SHA512

    74abcac923726d029acd89bdad0e0a3c4d76ade2c07306eade48c7afda811b551c6de3350be4b65d59b8b96f633f50cfa0aa8d4eccfdfdcd9dd7adde279ac21b

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/732-47-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/4900-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/4900-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/4900-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/4900-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/4900-17-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB