Analysis

  • max time kernel
    87s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/01/2024, 17:40

General

  • Target

    2024-01-26_e2e8d691d1d8214466b7a323f02b279c_cryptolocker.exe

  • Size

    100KB

  • MD5

    e2e8d691d1d8214466b7a323f02b279c

  • SHA1

    97c7dcd95585899a72060df56c88adb8c94df4fb

  • SHA256

    8834eeef3a489996c57c354fe12c4bdc4dff0c4afa7bc9ee7d730d60db61c67a

  • SHA512

    d6a30d186204eec452bcdfaf6c0da8b0427d8821cc790bcc53f124de9632606013519ac0d4e88017b42e63631796463d22092caaa946c05e1282616c61566282

  • SSDEEP

    768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MpxRiWjzUNojlEb:i5nkFGMOtEvwDpjNbwQEIikgNyEb

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 3 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 6 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-01-26_e2e8d691d1d8214466b7a323f02b279c_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-26_e2e8d691d1d8214466b7a323f02b279c_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2336
    • 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:2588

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    100KB

    MD5

    1b0df2296b9f3ef982cacbfc371b0d85

    SHA1

    01b8003ebba2e2a32de70b386e3ffde26ebd42b0

    SHA256

    b83c199ddd4ebf2628bafd4d243799a79be9bdf2254f2a2d6c3146c2fbd37483

    SHA512

    a8140b21e06a7569a3bf1143b290a23884ff976d1bc65b3b4e912e14b8f0102e3cca99a4b928e3b478dd55574abf621d6993befafcec6f948dc481f02ec2e6c9

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2336-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2336-1-0x0000000000670000-0x0000000000676000-memory.dmp

    Filesize

    24KB

  • memory/2336-2-0x0000000000670000-0x0000000000676000-memory.dmp

    Filesize

    24KB

  • memory/2336-3-0x0000000000690000-0x0000000000696000-memory.dmp

    Filesize

    24KB

  • memory/2336-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2588-18-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2588-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/2588-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2588-49-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB