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Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    22/01/2024, 20:42

General

  • Target

    2024-01-22_ae8f7f05d74442d58624577dfed88fa2_cryptolocker.exe

  • Size

    55KB

  • MD5

    ae8f7f05d74442d58624577dfed88fa2

  • SHA1

    3c2d3f9414b2c133661367f7d061654414a2e73e

  • SHA256

    b6e00bd2607dc5f70c5c1a5f8887dbd00e12bd1ba2c6951dcf4f174c3d3248d4

  • SHA512

    d02f21d51632641930275cbea1587375dba050f2e6f1fe787682f9e76d254741682c3b7f4720ccc0318238474c16f5112a820ab9990537387534d1d48ebde4ce

  • SSDEEP

    1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61o:BbdDmjr+OtEvwDpjMa

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 6 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • UPX dump on OEP (original entry point) 6 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-01-22_ae8f7f05d74442d58624577dfed88fa2_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-22_ae8f7f05d74442d58624577dfed88fa2_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2752
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:3008

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    56KB

    MD5

    091bb4f3e837515c52fbe869eb5feb8e

    SHA1

    1148a05816da70310f708f7a006791e0d61ed0f5

    SHA256

    07cddc56f2b5bf1c0a96fd50aa777cef139938c2529900d2d3a6cf82272b2f93

    SHA512

    3bd632b113fa63b67ebd62b49fee97d201d3146bf35b5bd486adf97b534d3e6719b2dbede16c76c2cb0019017b5674c328dc5de5a3b2db1813cb1c0b8e83a052

  • memory/2752-0-0x0000000000250000-0x0000000000256000-memory.dmp

    Filesize

    24KB

  • memory/2752-1-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2752-2-0x0000000000490000-0x0000000000496000-memory.dmp

    Filesize

    24KB

  • memory/2752-8-0x0000000000250000-0x0000000000256000-memory.dmp

    Filesize

    24KB

  • memory/2752-13-0x00000000023A0000-0x00000000023B0000-memory.dmp

    Filesize

    64KB

  • memory/2752-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3008-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3008-19-0x0000000000460000-0x0000000000466000-memory.dmp

    Filesize

    24KB

  • memory/3008-23-0x0000000000420000-0x0000000000426000-memory.dmp

    Filesize

    24KB

  • memory/3008-27-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB