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Analysis

  • max time kernel
    154s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/09/2022, 10:22

General

  • Target

    52d90931b2510c0364a39904c7d4abbe686385b0f46c46d9788e74cc50a1df89.exe

  • Size

    192KB

  • MD5

    3321aaf1db2179aba80c5fc2f8c945ff

  • SHA1

    8cea41e9bac00d0c552ca13e9c7b1bf12ade241e

  • SHA256

    52d90931b2510c0364a39904c7d4abbe686385b0f46c46d9788e74cc50a1df89

  • SHA512

    b25f49b353902094c0a881765b7651fce5b0e2d3d4e60a4c6e3235964c9d723a22fc98a4845e84b44f0e95aefc173897d58a830fb729c438793a3a9e371cc824

  • SSDEEP

    3072:8Ge2fdLbEamxv2YhFEryJVVtOTI4BkcKmPcfNVw8:3dLAaqvFHVVtO7KmkfNVL

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
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\52d90931b2510c0364a39904c7d4abbe686385b0f46c46d9788e74cc50a1df89.exe
    "C:\Users\Admin\AppData\Local\Temp\52d90931b2510c0364a39904c7d4abbe686385b0f46c46d9788e74cc50a1df89.exe"
    1⤵
    • Modifies visiblity of hidden/system files in Explorer
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4712
    • C:\Users\Admin\rvguec.exe
      "C:\Users\Admin\rvguec.exe"
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:1064

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\rvguec.exe

    Filesize

    192KB

    MD5

    380103838edbded937557448c4afc08b

    SHA1

    0294d9d893fbbb42eef352e87a290f21c3cd3221

    SHA256

    41a1d7444735f0d87a334f4aa1df165cbdd773264a580086586fba69369ce0cf

    SHA512

    358c8bd3011577bb0a46b032bdc89bf4235d6941acfdb8d4aedf095809f0080e644c6444932796ce052ff09724efd37b133d310a398adf5bcab4f7812cf1f78a

  • C:\Users\Admin\rvguec.exe

    Filesize

    192KB

    MD5

    380103838edbded937557448c4afc08b

    SHA1

    0294d9d893fbbb42eef352e87a290f21c3cd3221

    SHA256

    41a1d7444735f0d87a334f4aa1df165cbdd773264a580086586fba69369ce0cf

    SHA512

    358c8bd3011577bb0a46b032bdc89bf4235d6941acfdb8d4aedf095809f0080e644c6444932796ce052ff09724efd37b133d310a398adf5bcab4f7812cf1f78a