Analysis

  • max time kernel
    190s
  • max time network
    194s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/12/2022, 03:23

General

  • Target

    3672f8238efaad24477335d9f8748e5df0e321cb4c8a86b95676263c59d0ed79.exe

  • Size

    312KB

  • MD5

    f23af966ce03d383fe75b78460b9e622

  • SHA1

    2056fb4c62fa8b01dc90dc85a21084a722c277fa

  • SHA256

    3672f8238efaad24477335d9f8748e5df0e321cb4c8a86b95676263c59d0ed79

  • SHA512

    078a4c57fb2dbcbaa7d9dc3b2ddac163acfbfee31c0cd5e81269e37cbe34395755d84206840d16dc1397943f9d1886ef578768597d26e781c21f8834faee2de7

  • SSDEEP

    6144:EFrFO+BM7LIdvk9B1aKzhsMXcAxREoZPmbw0/8GHjTllRSxsn3B0OoepyYjHkRIE:qruB1aKzhsMXRxREUPmbxXv3BHBdjHCB

Score
10/10

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Adds Run key to start application 2 TTPs 29 IoCs
  • Maps connected drives based on registry 3 TTPs 4 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3672f8238efaad24477335d9f8748e5df0e321cb4c8a86b95676263c59d0ed79.exe
    "C:\Users\Admin\AppData\Local\Temp\3672f8238efaad24477335d9f8748e5df0e321cb4c8a86b95676263c59d0ed79.exe"
    1⤵
    • Modifies visiblity of hidden/system files in Explorer
    • Checks computer location settings
    • Adds Run key to start application
    • Maps connected drives based on registry
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:5056
    • C:\Users\Admin\hzquj.exe
      "C:\Users\Admin\hzquj.exe"
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Executes dropped EXE
      • Adds Run key to start application
      • Maps connected drives based on registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:2748
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:2392

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\hzquj.exe

      Filesize

      312KB

      MD5

      f23af966ce03d383fe75b78460b9e622

      SHA1

      2056fb4c62fa8b01dc90dc85a21084a722c277fa

      SHA256

      3672f8238efaad24477335d9f8748e5df0e321cb4c8a86b95676263c59d0ed79

      SHA512

      078a4c57fb2dbcbaa7d9dc3b2ddac163acfbfee31c0cd5e81269e37cbe34395755d84206840d16dc1397943f9d1886ef578768597d26e781c21f8834faee2de7

    • C:\Users\Admin\hzquj.exe

      Filesize

      312KB

      MD5

      f23af966ce03d383fe75b78460b9e622

      SHA1

      2056fb4c62fa8b01dc90dc85a21084a722c277fa

      SHA256

      3672f8238efaad24477335d9f8748e5df0e321cb4c8a86b95676263c59d0ed79

      SHA512

      078a4c57fb2dbcbaa7d9dc3b2ddac163acfbfee31c0cd5e81269e37cbe34395755d84206840d16dc1397943f9d1886ef578768597d26e781c21f8834faee2de7