Analysis

  • max time kernel
    164s
  • max time network
    185s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12-01-2024 06:01

General

  • Target

    2024-01-11_85158732031ef7bcec40bd82c46aed0a_cryptolocker.exe

  • Size

    44KB

  • MD5

    85158732031ef7bcec40bd82c46aed0a

  • SHA1

    0704e3cd553131361aa49032678aa826e2b1e8c7

  • SHA256

    6ab63733347e0400bb8e0b1f61525524d12264661b20b46810fcc350933c60a9

  • SHA512

    027e466252671d2729ca0c232677639ede09d83f533cabbbb754f53341d13d7297a83f954e1a01f4faa91a6210c49ea05cc94b894bac4562193eb1bdfb3c3436

  • SSDEEP

    768:bgX4zYcgTEu6QOaryfjqDlC6JFbK37Yl6dI5:bgGYcA/53GAA6y37Q6dI5

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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-01-11_85158732031ef7bcec40bd82c46aed0a_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-11_85158732031ef7bcec40bd82c46aed0a_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:368
    • C:\Users\Admin\AppData\Local\Temp\hasfj.exe
      "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      PID:4216

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    45KB

    MD5

    79510311f297cc6a64aef66f41a4de2d

    SHA1

    098b0eb52782a1b8ec34c4751a12d928bc534ab8

    SHA256

    475aea63fdb2c58756ca47408a56953f045f773eef2cdb207fee57ab415aea4d

    SHA512

    f1a4ec3abd655e9a011f71beb6bf95e2805e85bfcb6631abe2e7231f223ee1221c43af207d0ccafe02f93ccd4650d4d5f18e358c4a0e9771b06fde1a37082169

  • memory/368-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

    Filesize

    24KB

  • memory/368-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

    Filesize

    24KB

  • memory/368-2-0x0000000003150000-0x0000000003156000-memory.dmp

    Filesize

    24KB

  • memory/4216-18-0x0000000002D60000-0x0000000002D66000-memory.dmp

    Filesize

    24KB

  • memory/4216-17-0x0000000002ED0000-0x0000000002ED6000-memory.dmp

    Filesize

    24KB