Analysis

  • max time kernel
    182s
  • max time network
    188s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/01/2024, 12:07

General

  • Target

    2024-01-06_39b75c88852163b14b115a329c2cdcc5_cryptolocker.exe

  • Size

    56KB

  • MD5

    39b75c88852163b14b115a329c2cdcc5

  • SHA1

    f255c0295eb4647154bc60cfba1d8356fd84e407

  • SHA256

    6df0636d0f791d98f24a659d41eed45298598eed0eac68c203248b92c5020013

  • SHA512

    0c2280592b158c00cc897d6c7b27a28b405b09003976dfc964e0bc6e771ecada960291bd5e52064b2b774a97e86c65f9f4c94c6a3fe9842c95b90e0c2f5aae9d

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjIm8lB4dCOBy/cMFqeoYPO+eWW:ZzFbxmLPWQMOtEvwDpj38lD/cMAT+eWW

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).

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-01-06_39b75c88852163b14b115a329c2cdcc5_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-06_39b75c88852163b14b115a329c2cdcc5_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1740
    • 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:2984

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          56KB

          MD5

          5235f8e43c9bc14186168b63ca0730fc

          SHA1

          e484ce640ca8aace4d4dbb98666da6eb2865ba9b

          SHA256

          f6accd95ff7bf838f4375e898720eb99097983cd69a8d234bce70a42337daddc

          SHA512

          61ca17d0c1a7b30d74147a34dd36c803a62f615e1d959b257f1d0c937932d38e67435e39ea90e0690b8ae765487098af2bfd12849bc67d65e7b21c5e43e55550

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/1740-0-0x0000000000450000-0x0000000000453000-memory.dmp

          Filesize

          12KB

        • memory/1740-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

          Filesize

          24KB

        • memory/1740-2-0x00000000005B0000-0x00000000005B6000-memory.dmp

          Filesize

          24KB

        • memory/1740-3-0x0000000002240000-0x0000000002246000-memory.dmp

          Filesize

          24KB

        • memory/2984-17-0x0000000000410000-0x0000000000413000-memory.dmp

          Filesize

          12KB

        • memory/2984-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/2984-22-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/2984-48-0x0000000000410000-0x0000000000413000-memory.dmp

          Filesize

          12KB