Analysis

  • max time kernel
    136s
  • max time network
    130s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-10-2024 08:19

General

  • Target

    2024-10-31_fe94003a52c484ddea18a031175ed43f_cryptolocker.exe

  • Size

    35KB

  • MD5

    fe94003a52c484ddea18a031175ed43f

  • SHA1

    e2d7990c8bcd401a4157ec2c3abb4885504d7092

  • SHA256

    0fb82dbdc096235e25f7847092f9552be8352473ad47b3bfafdb84207c6b4c8a

  • SHA512

    baab1c3d08bf8fa468a5effd4e75af15ed4cd780f34e8535592577ba9ad2e9f6d4cef31b86769faca97da6f1572cfc83f6c5dc8329eb6d9ae44e4f8b44504387

  • SSDEEP

    768:XS5nQJ24LR1bytOOtEvwDpj66BLbjG9R6:i5nkFGMOtEvwDpjR+6

Score
7/10

Malware Config

Signatures

  • 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).

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-10-31_fe94003a52c484ddea18a031175ed43f_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-10-31_fe94003a52c484ddea18a031175ed43f_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2800
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Modifies system certificate store
      PID:760

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    35KB

    MD5

    05db7d61609524810e43eee6e546828a

    SHA1

    6af2cee79385c6ce2f3c8863ae9747befd5bda9e

    SHA256

    4f783168f18f00c8e20a22c3a36f64fa605a4a12ba06d4ee95eccd655babe274

    SHA512

    a238709150eb0b8878e53bf39f813df1aa614ed0300b409868c54e310062beae10d974b45e762de46b46a9254fe56c84eed8e4ff6b218d0d16dcd2d923cde0f1

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/760-20-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/760-21-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/760-27-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2800-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2800-1-0x00000000005C0000-0x00000000005C6000-memory.dmp

    Filesize

    24KB

  • memory/2800-2-0x00000000005C0000-0x00000000005C6000-memory.dmp

    Filesize

    24KB

  • memory/2800-3-0x0000000002110000-0x0000000002116000-memory.dmp

    Filesize

    24KB

  • memory/2800-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB