Analysis

  • max time kernel
    130s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/01/2024, 04:42

General

  • Target

    2024-01-24_5c2951fbf1c55f413b36fd1b0467019c_cryptolocker.exe

  • Size

    43KB

  • MD5

    5c2951fbf1c55f413b36fd1b0467019c

  • SHA1

    7d0fba2148460c2744bcd0b7e3685e27e220cbd1

  • SHA256

    220cbe7889e0cfc4106d736c0ee25eb6bdf031e864b143aa9c0538f763eb2774

  • SHA512

    a085be8a7cf19cef096e3b327d5c736c8c277cc851fb520c88663761a2d7117b7e2867cb77b1f589175843ad0c133415e3e1459c02ed0e49a5151b9598c63b20

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjIm8z2iaSIO/WZrEu/d+qmsUHQ1wsF:ZzFbxmLPWQMOtEvwDpj386Sj/WprqQ1b

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 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\2024-01-24_5c2951fbf1c55f413b36fd1b0467019c_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-24_5c2951fbf1c55f413b36fd1b0467019c_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:5096
    • 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:3644

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          43KB

          MD5

          08fefb75d388faf5f773161e692843c1

          SHA1

          f950b0f204eaa0e90acd71f693ce05d1c0ecd7fb

          SHA256

          01c311851f5713762bc4ce4a1274d635711c667bfe8174644c93b6da7e3d5717

          SHA512

          507978e81c00d21aa2e106599d6fefcdaa6288c53ce1346aaadef750a4c6d35e106a2a888d3092ed79465161ec16c09fa54ddf10171d233a6f96c61b3ea1900a

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/3644-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/3644-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/5096-0-0x00000000004E0000-0x00000000004E3000-memory.dmp

          Filesize

          12KB

        • memory/5096-1-0x00000000007F0000-0x00000000007F6000-memory.dmp

          Filesize

          24KB

        • memory/5096-2-0x00000000007F0000-0x00000000007F6000-memory.dmp

          Filesize

          24KB

        • memory/5096-3-0x0000000000810000-0x0000000000816000-memory.dmp

          Filesize

          24KB

        • memory/5096-17-0x00000000004E0000-0x00000000004E3000-memory.dmp

          Filesize

          12KB