Analysis

  • max time kernel
    89s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/02/2024, 11:46

General

  • Target

    2024-02-11_9420e617f56ab8b102378def54ec374d_cryptolocker.exe

  • Size

    39KB

  • MD5

    9420e617f56ab8b102378def54ec374d

  • SHA1

    10237c918a62df8a550c69dc7c899d5a3789176d

  • SHA256

    504110b56b8dfd428fbe54e4ccba2a8669bc11ee48539ce6656517a29dc6c9de

  • SHA512

    9c1b88df402cd2465db6fc974cf3c6941e23c7c2c2b06456e4f625b6ed673777d158b7acb052dd396820ecce8077302e79b1c40a8d0beb8a5decb68fe58b29ac

  • SSDEEP

    384:60VkMq01bJ3wtEwPS8HLEh+Jagz+3be+26aIIcVRYpetOOtEvwDpjqIGRmdHzOO1:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqh6/3

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\2024-02-11_9420e617f56ab8b102378def54ec374d_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-11_9420e617f56ab8b102378def54ec374d_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3300
    • 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:4468

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          40KB

          MD5

          dad7f6e2aa92686f02c18b376ce4fdf0

          SHA1

          20c9b6f7a21e27183591c0525550fbe855683170

          SHA256

          a76ce81c9df8a381edaa31f96aad03fc9aeb7d508bcba876deb45513efabf300

          SHA512

          982096f4736ca0638a6b903cc59bcee4c16ed8320d192f43a72bf575c36df5f275b5c5dba7fb4d3e22e715d1f659d7c86561ab9668dfeb2e813922a58c91ff8c

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/3300-0-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/3300-1-0x00000000007C0000-0x00000000007C6000-memory.dmp

          Filesize

          24KB

        • memory/3300-2-0x00000000007C0000-0x00000000007C6000-memory.dmp

          Filesize

          24KB

        • memory/3300-3-0x00000000007F0000-0x00000000007F6000-memory.dmp

          Filesize

          24KB

        • memory/3300-17-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/4468-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/4468-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/4468-18-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/4468-49-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB