Analysis

  • max time kernel
    135s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/06/2024, 04:05

General

  • Target

    2024-06-01_fd133ca2be3d23cb0eafe64682007aa6_cryptolocker.exe

  • Size

    43KB

  • MD5

    fd133ca2be3d23cb0eafe64682007aa6

  • SHA1

    39735a2064529a0ed19a8430418ef7510454c4cb

  • SHA256

    dccb07c155579c24ccb505a00e566295022b29cb343bd58b9acb18a62f5c2806

  • SHA512

    411d7497c35697cef036494c4fe4c6658ff736df532c26be25cb64914b05eaf7f20e93b8cd1457a3569385f3035d1516eef4aa68670528057901a1aeaf6f9ba6

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqh6/CtXabM0t:6j+1NMOtEvwDpjrR2XabMq

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\2024-06-01_fd133ca2be3d23cb0eafe64682007aa6_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-01_fd133ca2be3d23cb0eafe64682007aa6_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3996
    • 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:3236

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    44KB

    MD5

    cda1fd6c6b13b69704dd73d54593607a

    SHA1

    70ae5fbabf10073b3f6f49260072a635e88e9cba

    SHA256

    b58db78812d43a81047d5397c820c5772866dbfcdbd724a05123e284f778887b

    SHA512

    3bc4178371ec53462b481b54914414751e70d8f0eee837473a54b739a41be5188bbe37a056c9ac0cf7d0a97d3e01c7889acbaf92ce8ba9863cc6f2dc20507bc4

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3236-18-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3236-20-0x0000000000870000-0x0000000000876000-memory.dmp

    Filesize

    24KB

  • memory/3236-26-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/3236-49-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3996-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3996-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/3996-7-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/3996-2-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/3996-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB