Analysis

  • max time kernel
    151s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-12-2022 19:44

General

  • Target

    f59c5a80717107d6f74997fba80ddc6c2d5e293990cd5388b931ec01bb06812d.exe

  • Size

    116KB

  • MD5

    7f755d7673fb672c479e66a0dbffc8af

  • SHA1

    c38f0bfc6e4d5bb4263f09af858925a3266d54f9

  • SHA256

    f59c5a80717107d6f74997fba80ddc6c2d5e293990cd5388b931ec01bb06812d

  • SHA512

    50ed15bf72416a1bd914fb8b3efd55b0f9eb94c088b6c3d5f7620af5e34146d418cc652acfb3c15e1a067162a1190f4ec12cda5e8b991f5f010052e9226e9223

  • SSDEEP

    1536:d+cIRGgP97ep3E5zkons4MBikY+msHH0o4vwo3L2YRTB6m8AJ01:dF4rAE5zkPBir+miUoUEYRTB6ZYg

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 55 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\f59c5a80717107d6f74997fba80ddc6c2d5e293990cd5388b931ec01bb06812d.exe
    "C:\Users\Admin\AppData\Local\Temp\f59c5a80717107d6f74997fba80ddc6c2d5e293990cd5388b931ec01bb06812d.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:1808
    • C:\Users\Admin\yinuq.exe
      "C:\Users\Admin\yinuq.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:5040

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\yinuq.exe

    Filesize

    116KB

    MD5

    d3ed83ca40f6af16c2a34380685c6f03

    SHA1

    86bf2df96794a6434c6f08a55e8d0860bfb20480

    SHA256

    a7598930929c7ae0076b1da5bdc22c34b6a0f7a6fa89254bf2a99c77bcd44f23

    SHA512

    a9ff621865ce1ce7ce1527fea861b8a3912641add3c184957dd5b02dcf92cca1d8f7b5a7e02cba2bc2010841a717d3c503950d10de9d106a9f619f0b67a846a7

  • C:\Users\Admin\yinuq.exe

    Filesize

    116KB

    MD5

    d3ed83ca40f6af16c2a34380685c6f03

    SHA1

    86bf2df96794a6434c6f08a55e8d0860bfb20480

    SHA256

    a7598930929c7ae0076b1da5bdc22c34b6a0f7a6fa89254bf2a99c77bcd44f23

    SHA512

    a9ff621865ce1ce7ce1527fea861b8a3912641add3c184957dd5b02dcf92cca1d8f7b5a7e02cba2bc2010841a717d3c503950d10de9d106a9f619f0b67a846a7