Analysis

  • max time kernel
    149s
  • 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
    11/06/2024, 04:49

General

  • Target

    2024-06-11_792b4a25ce1f73c6e2366119d773407a_cryptolocker.exe

  • Size

    52KB

  • MD5

    792b4a25ce1f73c6e2366119d773407a

  • SHA1

    fe3491ff3708862f294371f07fb64a7ea94e1471

  • SHA256

    7336581ca912318fa4f6df4aa35d1cd240a870b7b348e945d089b1cc3e1d452e

  • SHA512

    8ec036f3a59ee3b059a1b89331e8de005a288a027378834f00dffd5f0e8d4f759efeba299d0fd2dbf581f9a3e48bab5310a41e38d3d4330569eac95e973ae7d9

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPhqlcnvhx5/xFRY+iyyx:6j+1NMOtEvwDpjr8hhXy+iyyx

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\2024-06-11_792b4a25ce1f73c6e2366119d773407a_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-11_792b4a25ce1f73c6e2366119d773407a_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4448
    • 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:4396

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    52KB

    MD5

    dbc300f24abd7b3cfa49b244ba8c2d7d

    SHA1

    f73a9ac08a2e2dd258574694ae4d40864923aee6

    SHA256

    edfc8f5537943fbfa17366058e526290c731c8498591e2df2b7db9b04b10f45d

    SHA512

    701ad485663681c202996da4e1201b76a6b3b3cc5f41fdce6d31b423bb22d7a97a67682304499f114683a77efc572f5fd68d7033d4e8f16f1192de33289ee249

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/4396-19-0x0000000000760000-0x0000000000766000-memory.dmp

    Filesize

    24KB

  • memory/4396-25-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/4396-48-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4448-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4448-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4448-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4448-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/4448-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB