Analysis

  • max time kernel
    93s
  • max time network
    126s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/04/2024, 07:44

General

  • Target

    2024-04-05_db8e69df2794a70d9b8600e35954c796_cryptolocker.exe

  • Size

    40KB

  • MD5

    db8e69df2794a70d9b8600e35954c796

  • SHA1

    e9f7963c6780b694a116f80a655e2ca21d19c8bc

  • SHA256

    400531b588a8bf13cfa7f35b9155ee229b4ca187244639480e06a04a3761fde8

  • SHA512

    c45d02190a399d79eae19035899a5d8e13b89fc6df6028043402444b0723ea9a27c3f00df4c2d4038df1db10f64278a6d655fbb6620011920c6ef51dcb3f3099

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLenQLJJEykJ:ZzFbxmLPWQMOtEvwDpjLeU3EZ

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 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\2024-04-05_db8e69df2794a70d9b8600e35954c796_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-05_db8e69df2794a70d9b8600e35954c796_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1124
    • 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:3000

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          40KB

          MD5

          2540dd243afdb91915c386d7738eec5c

          SHA1

          2b6efb726d4961b4ee52f1f76724857842342a7a

          SHA256

          14a5a321d229b9a4c3b0fbfd9b03759a82383a5facd3090cd3692adf39988c63

          SHA512

          93f4377130405624d76e2f513167bced4783a5e3ddaaffd1d9db2fc1a08e5a02abf87dfb9d22621aca6a084b23bf71f8cc5acbfb9a035d90c611a2e4f4e44e0a

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/1124-0-0x00000000004E0000-0x00000000004E3000-memory.dmp

          Filesize

          12KB

        • memory/1124-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

          Filesize

          24KB

        • memory/1124-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

          Filesize

          24KB

        • memory/1124-3-0x0000000002070000-0x0000000002076000-memory.dmp

          Filesize

          24KB

        • memory/1124-17-0x00000000004E0000-0x00000000004E3000-memory.dmp

          Filesize

          12KB

        • memory/3000-19-0x0000000000450000-0x0000000000453000-memory.dmp

          Filesize

          12KB

        • memory/3000-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/3000-26-0x00000000004A0000-0x00000000004A6000-memory.dmp

          Filesize

          24KB