Analysis

  • max time kernel
    94s
  • max time network
    96s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/04/2024, 05:13

General

  • Target

    2024-04-30_8a70f940a6077a592b45961cda0630da_cryptolocker.exe

  • Size

    39KB

  • MD5

    8a70f940a6077a592b45961cda0630da

  • SHA1

    2ce0c59dfa486869afc5b8b78a308df8e972df49

  • SHA256

    bfd937c4e52390af778787bf6de8a66bea998fbe41d81672acf5e15b24274d52

  • SHA512

    9db7a0c937bbdc1eee7c997ca1058d9088b77ae94dcaf329c736734b7b1f9e7639cd9bad1c9341455368fe54418287653913d164cbd0f078a5cab9bf1659dece

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLeJAsKuDkg:ZzFbxmLPWQMOtEvwDpjLeJAsKcz

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 7 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-30_8a70f940a6077a592b45961cda0630da_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-30_8a70f940a6077a592b45961cda0630da_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3664
    • 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:1848

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          39KB

          MD5

          74bce1b4b07eb5177069247e96bdaccc

          SHA1

          35c65e3d3b30d3eb2cb59b7861481b6f0c687af2

          SHA256

          c83c4b722cd6dd592acdb62372d845bd1694c35bd32102c2fe0bd89a8b4caaa2

          SHA512

          d393b7ecb4f319bf754e536456f9e4d4bfa505cb3f1a61698777100c921e5e87b8f604d78b90dad0b3d5bdc2683d1ebfd2a08fdc325e9e5ca16b570174b56846

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/1848-17-0x00000000005B0000-0x00000000005B6000-memory.dmp

          Filesize

          24KB

        • memory/1848-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/1848-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/3664-0-0x00000000004F0000-0x00000000004F3000-memory.dmp

          Filesize

          12KB

        • memory/3664-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

          Filesize

          24KB

        • memory/3664-2-0x00000000005B0000-0x00000000005B6000-memory.dmp

          Filesize

          24KB

        • memory/3664-3-0x0000000002070000-0x0000000002076000-memory.dmp

          Filesize

          24KB

        • memory/3664-19-0x00000000004F0000-0x00000000004F3000-memory.dmp

          Filesize

          12KB