Analysis

  • max time kernel
    84s
  • max time network
    144s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/10/2024, 03:31

General

  • Target

    2024-10-03_a934132b31c0b6f3f61e2f772d2ef36f_cryptolocker.exe

  • Size

    94KB

  • MD5

    a934132b31c0b6f3f61e2f772d2ef36f

  • SHA1

    0f9a4c7cc25106e652faf4c0772c229901422ff9

  • SHA256

    2cbc23768c4903e9f98b065aa18e670e8d96875e04a1474a30541ed7d27b1c90

  • SHA512

    96bc416d02f7eb437a1c4b775cbfbfed4bf8faf1ab7aca02d56a2010a36b25a740ec5ec217e6d403c94f9c32ffe43cfc38a006bc5c699ad5759857a6a800ab9b

  • SSDEEP

    1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRDjgx/kU:zCsanOtEvwDpjBn

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
  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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\2024-10-03_a934132b31c0b6f3f61e2f772d2ef36f_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-10-03_a934132b31c0b6f3f61e2f772d2ef36f_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:400
    • 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:3572

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          94KB

          MD5

          cfd64813af694cbfa6703584305d570c

          SHA1

          aed947986737b35cff3e4f35123007304ba64384

          SHA256

          6cf6ed26b7fa98d8120606cdb2b59131c89eb6671eeb6d30b592357c68dded9e

          SHA512

          5a9d966f7f421db970743a46d796718e74c259c1e6acfb94d9402fcf66b76f32fe5e26b73df8554070e6787b4eadd6cdcc086f3b5e780d4245e45dc67de5a869

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/400-0-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/400-1-0x0000000000660000-0x0000000000666000-memory.dmp

          Filesize

          24KB

        • memory/400-2-0x0000000000660000-0x0000000000666000-memory.dmp

          Filesize

          24KB

        • memory/400-3-0x0000000002220000-0x0000000002226000-memory.dmp

          Filesize

          24KB

        • memory/400-17-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/3572-20-0x0000000001F70000-0x0000000001F76000-memory.dmp

          Filesize

          24KB

        • memory/3572-19-0x00000000006B0000-0x00000000006B6000-memory.dmp

          Filesize

          24KB

        • memory/3572-48-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB