Analysis

  • max time kernel
    149s
  • 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
    07-05-2024 04:32

General

  • Target

    2024-05-07_5d9b279fa3c26a5e3dc7030518bbbe92_cryptolocker.exe

  • Size

    43KB

  • MD5

    5d9b279fa3c26a5e3dc7030518bbbe92

  • SHA1

    87e97d9aa54c78b6b972ee3443d5678f13693720

  • SHA256

    e53293840b5694ea29c0b8335052fa658644b99c908edceb8f17ae1768004721

  • SHA512

    1fd95e3ec40c6ccf03fcbb8cc5f63b708cf8b9e6fef504cc7456141de5e947b546df5a8c15febe9c7a2275dd6302a4fc5afcd68745189384a423cd427329ed73

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqh6/aMl:6j+1NMOtEvwDpjrRrl

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\2024-05-07_5d9b279fa3c26a5e3dc7030518bbbe92_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-07_5d9b279fa3c26a5e3dc7030518bbbe92_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:448
    • 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:4588

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    43KB

    MD5

    c0dfd561e95509cd95652ae967eb1611

    SHA1

    3d194ee05419cb90353cfb8adcd2632a5a9bd2c8

    SHA256

    bfc7906235059b9339c44a306e505401a8b68395c48027dc9c425e3aff154653

    SHA512

    2f78d4fac3ee20d02b83e2a5ed55fe3142cd15d469facab600e679bfbb0536cc46d6d1546cf36ac815d6fb89822106ebd08057d3376e793a978e5aaf81573f88

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/448-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/448-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/448-9-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/448-2-0x00000000005C0000-0x00000000005C6000-memory.dmp

    Filesize

    24KB

  • memory/448-18-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4588-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4588-22-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/4588-20-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/4588-49-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB