Analysis

  • max time kernel
    93s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/05/2024, 04:28

General

  • Target

    2024-05-17_698d255fc89389f51a1c09577f2da0ee_cryptolocker.exe

  • Size

    43KB

  • MD5

    698d255fc89389f51a1c09577f2da0ee

  • SHA1

    f53e94f761efc269ad4c1adefec228b279659cf3

  • SHA256

    448e0554b558847c7c5f5cabec0876044e4859a1bed00d4d2f619dca79ff54a6

  • SHA512

    c141d2abb671ece974d06ccf83ec831dd9ba004df1e04505f80407165507970a1d61938bb3300551ffa44f7e4d3fbbf3eca31975a3b8775b9ea4bc5b949fa799

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqh6/aDz:6j+1NMOtEvwDpjrRo

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • Detects executables built or packed with MPress PE compressor 5 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\2024-05-17_698d255fc89389f51a1c09577f2da0ee_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-17_698d255fc89389f51a1c09577f2da0ee_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4592
    • 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:1968

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          43KB

          MD5

          ba60b0b2f1ebef7f1f28748004c147a4

          SHA1

          b881eaf428467af82dd709531a25b79231a89bad

          SHA256

          4140927d62c0f1a13565b306586038316b6b90cf20abef425eef56dbac62f284

          SHA512

          88d4b73efd4668411218f4cfb62d0d65fabd0a0e01939e96c9a62575dace17d3d91163d89a0f27514261f09ece5afb5060bae3490291bc679aa2d71e68436dff

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/1968-16-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/1968-20-0x00000000006D0000-0x00000000006D6000-memory.dmp

          Filesize

          24KB

        • memory/1968-26-0x00000000006A0000-0x00000000006A6000-memory.dmp

          Filesize

          24KB

        • memory/1968-49-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/4592-0-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/4592-1-0x0000000001FD0000-0x0000000001FD6000-memory.dmp

          Filesize

          24KB

        • memory/4592-2-0x0000000002100000-0x0000000002106000-memory.dmp

          Filesize

          24KB

        • memory/4592-9-0x0000000001FD0000-0x0000000001FD6000-memory.dmp

          Filesize

          24KB

        • memory/4592-17-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB