Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31/05/2024, 05:23

General

  • Target

    2024-05-31_134e307b056b994f852bda8af74cf0bb_cryptolocker.exe

  • Size

    53KB

  • MD5

    134e307b056b994f852bda8af74cf0bb

  • SHA1

    645d874813554c81241c6cec604aad9358bcb5b4

  • SHA256

    db3d327f8473cab67dd4b224d3413aa0ed29afc19de4cf6cd2c5d117b0f51030

  • SHA512

    483a0e786af0b46810330ebc0f60ed4707f0ac9f976b599ffd61d0442967ac2ace6e76f33c0601522e4d546b652067e25ef27d5476b828229e946685ae998f78

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPhqlcnvhx5/xFRp5jlSg5:6j+1NMOtEvwDpjr8hhXj5N

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • Detects executables built or packed with MPress PE compressor 4 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 6 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-31_134e307b056b994f852bda8af74cf0bb_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-31_134e307b056b994f852bda8af74cf0bb_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4224
    • 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:4548

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          53KB

          MD5

          e483e44a3b058424233204a08d09294b

          SHA1

          87cd120fe68a929183e82bd6f990d890ccba97e5

          SHA256

          260009ec8df6d08cfac1b6899c53f7df1019852a61dba1113e306d9d208c82e0

          SHA512

          4014a8b261bc5c05909841eede0b8f8fc30d298e111b4adae8523ced793f1c7e53a86db68f6cb247e57cd6ae30e38f1f909d0a7b30e39a7169709916423dea45

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/4224-0-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/4224-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

          Filesize

          24KB

        • memory/4224-2-0x0000000000750000-0x0000000000756000-memory.dmp

          Filesize

          24KB

        • memory/4224-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

          Filesize

          24KB

        • memory/4224-17-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/4548-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/4548-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/4548-48-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB