Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10-05-2024 07:32

General

  • Target

    2024-05-10_3e762df5e92d2b5d08e2cc4378cec1da_cryptolocker.exe

  • Size

    47KB

  • MD5

    3e762df5e92d2b5d08e2cc4378cec1da

  • SHA1

    8307815f1efccc4fb6e07d2677f10f45c3917406

  • SHA256

    6ef977082af9a69bb0bbe3e7beb2c6d822eb12c43ca1c1d13f9d6d3b48abb647

  • SHA512

    0c20d47ba19eeb9ef0cccc31df3dfaca6218c6d48757336c128eebb95f50a13ed025b0774b0b4dbc3cdad7cfa9e773a1a9dad65118069118147e9fe697691ab0

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWE6BLbjG9RzhwaRhAX:xj+VGMOtEvwDpjy+TRhQ

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • Detects executables built or packed with MPress PE compressor 4 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\2024-05-10_3e762df5e92d2b5d08e2cc4378cec1da_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-10_3e762df5e92d2b5d08e2cc4378cec1da_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1004
    • 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:4032

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    47KB

    MD5

    509e2fef86abb135f4feff2206363ef2

    SHA1

    8362353559765a335228428a8171227152537cc7

    SHA256

    11a25c0390cde1039829769c7f4d9bf98a56af4dc92b65fab1f8743e33b19486

    SHA512

    30b2e6f854bfa4b38aa893c89924609b31adddfc5967561ada1bfb704ef7624beeacf7cd6b35e26cd6171c5f2cb53a85b4a756adc7d1a226ac3b7f4a55c6740f

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1004-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1004-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

    Filesize

    24KB

  • memory/1004-3-0x00000000020E0000-0x00000000020E6000-memory.dmp

    Filesize

    24KB

  • memory/1004-9-0x00000000021D0000-0x00000000021D6000-memory.dmp

    Filesize

    24KB

  • memory/1004-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4032-19-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/4032-25-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4032-48-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB