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Analysis

  • max time kernel
    143s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/02/2024, 07:27

General

  • Target

    2024-02-22_407d73c1fa51057c9d3c135be661138b_cryptolocker.exe

  • Size

    46KB

  • MD5

    407d73c1fa51057c9d3c135be661138b

  • SHA1

    d98a78660fcc663c1ba3e6e1ccbf03f8c908a0f9

  • SHA256

    8dbdd1d4443ee13dfae9bfa2dc3e8bbccb3fe73def96eea8a99f086957d71396

  • SHA512

    ad060ee84719e665fa2ec3fa22f7b1e842a79e514438cc50bed86d208679b948ca652c94f52858669b289cb984866c0220848d594f4c89eec3acf7ecf0226e01

  • SSDEEP

    768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaaEqbIu556Blg:X6QFElP6n+gJQMOtEvwDpjB0GIWSlg

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 IoCs
  • Checks computer location settings 2 TTPs 1 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\2024-02-22_407d73c1fa51057c9d3c135be661138b_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-22_407d73c1fa51057c9d3c135be661138b_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:5012
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:336

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    46KB

    MD5

    4f07dbdc45bd2a419bcc3e07a41ab561

    SHA1

    bb288c29e5a5415eaeb05e9b0557e5f6d6057d0a

    SHA256

    925507d9fe43e57cf69facec8e6443b89dacf156fb8882aca4d16a22b444b977

    SHA512

    c00d444262c107dfeb5f59ae4c15406636027e21f43717917530ea72ffb90b9c709d8f4ed9cd32d46095fca39af4bfc12334575de7f134ad0cbaf316af14b027

  • memory/336-18-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/336-17-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/5012-0-0x0000000000520000-0x0000000000526000-memory.dmp

    Filesize

    24KB

  • memory/5012-1-0x0000000000520000-0x0000000000526000-memory.dmp

    Filesize

    24KB

  • memory/5012-2-0x0000000000640000-0x0000000000646000-memory.dmp

    Filesize

    24KB