Analysis

  • max time kernel
    141s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/04/2024, 04:33

General

  • Target

    2024-04-30_29b611cd85b5b5bc21a6c99823b44394_cryptolocker.exe

  • Size

    47KB

  • MD5

    29b611cd85b5b5bc21a6c99823b44394

  • SHA1

    2030f84277a4e584fb9685b04f6346bcb53b9e7d

  • SHA256

    5f218468ec0ee8bec6cf4c14b27e34fe22f5c63b70fc53114f6b55c8b8b1e633

  • SHA512

    2880b6e9c72db5bbd7fcbf20c2f9958ee6b8eb3e4cc7fc3ed6c394f9466756c46719056d06a2880fc9e891b55161d92a5874e982fbd25ef0c834691df055b7c4

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWE6BLbjG9Rva/yYsmm:xj+VGMOtEvwDpjy+viHsf

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • Detects executables built or packed with MPress PE compressor 5 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\2024-04-30_29b611cd85b5b5bc21a6c99823b44394_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-30_29b611cd85b5b5bc21a6c99823b44394_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4996
    • 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:3872

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    47KB

    MD5

    30a672cd54fedd05e09f36fc05949967

    SHA1

    d88e3a842f43770c13ea7e6df3ad6c30b90e08a2

    SHA256

    d677374b136adf4680cee45e6bbb014266264ea84af1cff32c219e228a8912cf

    SHA512

    b5b23b9569a52b32b7d66485938976b175a685038a69673e4d0d2a2050659146739c77473906cf1ba50d79df93276779ba75aed93438b549018d085377bcbb7a

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3872-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3872-20-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/3872-26-0x0000000000630000-0x0000000000636000-memory.dmp

    Filesize

    24KB

  • memory/3872-49-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4996-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4996-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/4996-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/4996-3-0x00000000005D0000-0x00000000005D6000-memory.dmp

    Filesize

    24KB

  • memory/4996-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB