Analysis

  • max time kernel
    133s
  • 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
    06/06/2024, 21:37

General

  • Target

    2024-06-06_da17f22e1885d67ab904da6ec14a3b81_cryptolocker.exe

  • Size

    62KB

  • MD5

    da17f22e1885d67ab904da6ec14a3b81

  • SHA1

    144320ac801abdc010536e53e00c633d849c2aee

  • SHA256

    34ead6de9987930251d6c5645271a068c7de8b211cda9ba13ba3f56871201986

  • SHA512

    b3376054e2dc6aa131775dc68525c6fe6ed3c401311403fa63e53621775fe72c7dbad5a30f1ac0b72c71af2df67a61a17e1f3c002cf877daad421f937827c25a

  • SSDEEP

    768:3Uz7yVEhs9+Hs1SQtOOtEvwDpjO9+4hdCY8EQMjpi/Wpi3B3URiLqCyLuAx8XG9e:3P+HsMQMOtEvwDpjoHy7B3g9CWuAxWTn

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\2024-06-06_da17f22e1885d67ab904da6ec14a3b81_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-06_da17f22e1885d67ab904da6ec14a3b81_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1220
    • 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:4668

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          62KB

          MD5

          e30862a4214636d2ee9c14a8eaabec47

          SHA1

          f61cab6fd53f6bdda5e20f645fa92e74b4afa2bd

          SHA256

          cc479f440f76cabaaf251f85bcf2cf9e8105dd1b2e7302549042bc261c92f49c

          SHA512

          ff507fd44f4c3e8752bf16fbe5433b0d690e06d3bc68163939571f01c18a2bb1ffbd9b8045e1290cc9746d9068cbe4cf76fca2a9f57ba08fd49549628c05b32d

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/1220-9-0x00000000005A0000-0x00000000005A6000-memory.dmp

          Filesize

          24KB

        • memory/1220-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

          Filesize

          24KB

        • memory/1220-18-0x0000000000500000-0x000000000050B000-memory.dmp

          Filesize

          44KB

        • memory/1220-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

          Filesize

          24KB

        • memory/1220-0-0x0000000000500000-0x000000000050B000-memory.dmp

          Filesize

          44KB

        • memory/4668-21-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/4668-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/4668-17-0x0000000000500000-0x000000000050B000-memory.dmp

          Filesize

          44KB

        • memory/4668-49-0x0000000000500000-0x000000000050B000-memory.dmp

          Filesize

          44KB