Analysis

  • max time kernel
    88s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/01/2024, 11:36

General

  • Target

    2024-01-24_bea2e354e08cc4b20836d3da676ab4da_cryptolocker.exe

  • Size

    60KB

  • MD5

    bea2e354e08cc4b20836d3da676ab4da

  • SHA1

    b5889c96f23fb95e0764c714ff809e6a4c8d9b9a

  • SHA256

    d8c5877ac49ad22dab4d8893b15741fbe5e924f856b28b1f88882c453995d5ab

  • SHA512

    06e941ce5e266d90f65cdfb9f3abff1e0e95635e047b6f08fea3e5043cc08ddbe19f98ec45d503594de49995a4400b59099b95c3b1466545ad12de9147a1ef18

  • SSDEEP

    1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMTIt:TCjsIOtEvwDpj5HE/OUHnSMD

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 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\2024-01-24_bea2e354e08cc4b20836d3da676ab4da_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-24_bea2e354e08cc4b20836d3da676ab4da_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4732
    • 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:3220

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          60KB

          MD5

          ad8958fcfba981b00649d05d43b63ed5

          SHA1

          5ef147f1289ef8e486202b5ca21603f95fd7d013

          SHA256

          af3ab4822f81001e2b5919b76138797c414c3a22e5a36b60bd902a10358d8a03

          SHA512

          03ed57f07168fbdef53a152bb629ef84d406c60fedb5df339586cfbd1a9c06bdd7ab3a51bf398e059a3906c3619086d1a590b267034b7d563e4c86017ee713ed

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/3220-18-0x0000000000500000-0x000000000050E000-memory.dmp

          Filesize

          56KB

        • memory/3220-20-0x00000000005D0000-0x00000000005D6000-memory.dmp

          Filesize

          24KB

        • memory/3220-26-0x0000000000560000-0x0000000000566000-memory.dmp

          Filesize

          24KB

        • memory/3220-49-0x0000000000500000-0x000000000050E000-memory.dmp

          Filesize

          56KB

        • memory/4732-0-0x0000000000500000-0x000000000050E000-memory.dmp

          Filesize

          56KB

        • memory/4732-1-0x0000000002310000-0x0000000002316000-memory.dmp

          Filesize

          24KB

        • memory/4732-2-0x0000000002310000-0x0000000002316000-memory.dmp

          Filesize

          24KB

        • memory/4732-3-0x0000000002190000-0x0000000002196000-memory.dmp

          Filesize

          24KB

        • memory/4732-17-0x0000000000500000-0x000000000050E000-memory.dmp

          Filesize

          56KB