Analysis

  • max time kernel
    147s
  • max time network
    138s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/03/2024, 09:27

General

  • Target

    2024-03-05_273b91fde46049f88d4cbfcd93e965e9_cryptolocker.exe

  • Size

    47KB

  • MD5

    273b91fde46049f88d4cbfcd93e965e9

  • SHA1

    ee802cbf1f6bb9f91557b4fdef2d862450be893e

  • SHA256

    7b3fcfc8fee29e2eb730667970602dad44232706f52fdd5dbd14a075e17951a7

  • SHA512

    6a5ea8bbdb654d6d6debdb2011644e35090de9abe8618a023cf51c91a96efd22ef41acac7fdf5c5f78e08139ca9f3b90166568bf7b59b6e465145b6793c52181

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWE6BLbjG9RzhwaN4kf:xj+VGMOtEvwDpjy+TN4s

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 5 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-03-05_273b91fde46049f88d4cbfcd93e965e9_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-05_273b91fde46049f88d4cbfcd93e965e9_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3696
    • 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:1916

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          47KB

          MD5

          5f520c9bdc0ffb5200557ae2b116b322

          SHA1

          45cb67bd52039d44827539bb2f06eefa6cb51ea6

          SHA256

          61725e76c3efea2094e80daa67dd16caa92fa86d15aec47c752b0e0d0bc32d35

          SHA512

          a74b6d2efb63f511f3d19a8032f800a0387eb246db686fcf3efe6f57f75a2a2535bdd5ac890467fa9fc305dbd622b2d362be1374a27d71a93ae6a7dcbbfe7dad

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/1916-18-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/1916-20-0x0000000001F70000-0x0000000001F76000-memory.dmp

          Filesize

          24KB

        • memory/1916-26-0x0000000001F00000-0x0000000001F06000-memory.dmp

          Filesize

          24KB

        • memory/1916-49-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/3696-0-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/3696-1-0x0000000000690000-0x0000000000696000-memory.dmp

          Filesize

          24KB

        • memory/3696-2-0x0000000000690000-0x0000000000696000-memory.dmp

          Filesize

          24KB

        • memory/3696-3-0x00000000006B0000-0x00000000006B6000-memory.dmp

          Filesize

          24KB

        • memory/3696-17-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB