Analysis

  • max time kernel
    154s
  • max time network
    174s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/01/2024, 05:53

General

  • Target

    2024-01-09_4d70e310d21897613902c3d1b3e3c4b9_cryptolocker.exe

  • Size

    87KB

  • MD5

    4d70e310d21897613902c3d1b3e3c4b9

  • SHA1

    550011c267f7aed13c070bccd540a2b74adc8ee2

  • SHA256

    50d21ced1b6699952080a0d042b69bf0532b646abe096f31169d5db1edd3e96d

  • SHA512

    1f33dfc84c1527befbd6e5bb4902dabd0a8d4c315571c2183166238dd50eb5fa1b53efe4e1a59aca0342519b4cb0af8a51aa80183e45f92032014420b0bee6f6

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5H8u8rBN6nqEZNi1OkQu:vCjsIOtEvwDpj5H8zPsc

Score
7/10

Malware Config

Signatures

  • 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\2024-01-09_4d70e310d21897613902c3d1b3e3c4b9_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-09_4d70e310d21897613902c3d1b3e3c4b9_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1404
    • 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:4400

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    87KB

    MD5

    830198f9e1aac0b54521f3fdff62d846

    SHA1

    de3931ddbb7af67e0096670638ea0c66331332dd

    SHA256

    e185e098c256c42c4aac2e2e0820e5fc87f12f5ba8a30a729c9d96eaa0bc734f

    SHA512

    8187c5a11b1fb9818399bd39eeb835a02ec3c44a19ef737868bc54fff64ad5b9d21ccc6187c544cc031a37cab7615af7ef7f97c3972c5de97ee3981d630536cb

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1404-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/1404-2-0x00000000005C0000-0x00000000005C6000-memory.dmp

    Filesize

    24KB

  • memory/1404-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/4400-17-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/4400-18-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB