Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-05-2024 21:06

General

  • Target

    2024-05-22_91d3be30d7324dcd2e8e9dfad09cc732_cryptolocker.exe

  • Size

    62KB

  • MD5

    91d3be30d7324dcd2e8e9dfad09cc732

  • SHA1

    e868cc4bdf20657bba3e6a7c3c84066955096e67

  • SHA256

    2a1dec40fb98954d4bacab5b8fd13d21d60f22aec281766ac7b646e26b49bb96

  • SHA512

    9ee209cd72b2b11581560ad04f056d989d9c3124f41a98eb09a9078099849e305a6b8f7cf0d8cce2f902279c8b12c379957c0fb2dc053171247db20e80f5f0b4

  • SSDEEP

    768:3Uz7yVEhs9+Hs1SQtOOtEvwDpjO9+4hdCY8EQMjpi/Wpi3B3URiLqCyLuAx8XG9N:3P+HsMQMOtEvwDpjoHy7B3g9CWuAxWB+

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 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 7 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-22_91d3be30d7324dcd2e8e9dfad09cc732_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-22_91d3be30d7324dcd2e8e9dfad09cc732_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:5012
    • 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:4616

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    62KB

    MD5

    e6a9d5463305e4e46deb3a65ed2a3168

    SHA1

    b39cab313376d6c86cb7a4af868f681868190ed2

    SHA256

    ceb692cee7bc905b6d824faef3c63c4a221ac75c42a85fd039261d31af392445

    SHA512

    703d138caeb0184f3916b74cc2be80ef79ae7f4562ffc64184359171655ffae9fa16968313f01d6cb8aa4d9604c7bcf4e3d39a8d7ef88f2ca40a23adc5f5e27a

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/4616-18-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

  • memory/4616-20-0x0000000000680000-0x0000000000686000-memory.dmp

    Filesize

    24KB

  • memory/4616-26-0x0000000000520000-0x0000000000526000-memory.dmp

    Filesize

    24KB

  • memory/4616-51-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

  • memory/5012-0-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

  • memory/5012-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/5012-2-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

    Filesize

    24KB

  • memory/5012-9-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/5012-17-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB