Analysis

  • max time kernel
    104s
  • max time network
    217s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-11-2022 06:18

General

  • Target

    4af7c72253f706a407b2e7e476bc760a25f18cb644a4049b467257953165a5fc.exe

  • Size

    480KB

  • MD5

    7a478a60432a2f6ba70d08f35316e281

  • SHA1

    b6cf341f272c62643fc098c81f5bf29cb4b7dbc8

  • SHA256

    4af7c72253f706a407b2e7e476bc760a25f18cb644a4049b467257953165a5fc

  • SHA512

    81553c0e54f420e137aadd472d8b15cc026d9db87726182591f090dcfe00d471a11881786b8e9173ae436877c14221637bcfd1d02f318a3b42fdc854abc2b250

  • SSDEEP

    6144:x3iivPlrTo8JNYWfaWIjmyp+2z93DqvSG54AIH:UilJNYvLEE9WKAIH

Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Adds Run key to start application 2 TTPs 18 IoCs
  • Drops desktop.ini file(s) 2 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 57 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4af7c72253f706a407b2e7e476bc760a25f18cb644a4049b467257953165a5fc.exe
    "C:\Users\Admin\AppData\Local\Temp\4af7c72253f706a407b2e7e476bc760a25f18cb644a4049b467257953165a5fc.exe"
    1⤵
    • Checks computer location settings
    • Drops desktop.ini file(s)
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2088
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "Microsoft® Windows® Operating System" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\explorer.exe
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4996
      • C:\Windows\SysWOW64\reg.exe
        reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "Microsoft® Windows® Operating System" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\explorer.exe
        3⤵
        • Adds Run key to start application
        PID:3276
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "Microsoft® Windows® Operating System" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\explorer.exe
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4176
      • C:\Windows\SysWOW64\reg.exe
        reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "Microsoft® Windows® Operating System" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\explorer.exe
        3⤵
        • Adds Run key to start application
        PID:3080
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "Microsoft® Windows® Operating System" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\explorer.exe
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3772
      • C:\Windows\SysWOW64\reg.exe
        reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "Microsoft® Windows® Operating System" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\explorer.exe
        3⤵
        • Adds Run key to start application
        PID:4196
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "Microsoft® Windows® Operating System" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\explorer.exe
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1432
      • C:\Windows\SysWOW64\reg.exe
        reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "Microsoft® Windows® Operating System" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\explorer.exe
        3⤵
        • Adds Run key to start application
        PID:4960
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "Microsoft® Windows® Operating System" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\explorer.exe
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4532
      • C:\Windows\SysWOW64\reg.exe
        reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "Microsoft® Windows® Operating System" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\explorer.exe
        3⤵
        • Adds Run key to start application
        PID:3600
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "Microsoft® Windows® Operating System" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\explorer.exe
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1596
      • C:\Windows\SysWOW64\reg.exe
        reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "Microsoft® Windows® Operating System" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\explorer.exe
        3⤵
        • Adds Run key to start application
        PID:1972
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "Microsoft® Windows® Operating System" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\explorer.exe
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1224
      • C:\Windows\SysWOW64\reg.exe
        reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "Microsoft® Windows® Operating System" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\explorer.exe
        3⤵
        • Adds Run key to start application
        PID:2228
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "Microsoft® Windows® Operating System" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\explorer.exe
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3664
      • C:\Windows\SysWOW64\reg.exe
        reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "Microsoft® Windows® Operating System" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\explorer.exe
        3⤵
        • Adds Run key to start application
        PID:860
    • C:\Users\Admin\AppData\Roaming\explorer.exe
      "C:\Users\Admin\AppData\Roaming\explorer.exe"
      2⤵
      • Executes dropped EXE
      • Checks computer location settings
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:920
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "Microsoft® Windows® Operating System" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\explorer.exe
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4652
        • C:\Windows\SysWOW64\reg.exe
          reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "Microsoft® Windows® Operating System" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\explorer.exe
          4⤵
          • Adds Run key to start application
          PID:4392
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\explorer.exe" "explorer.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:3888

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    480KB

    MD5

    7a478a60432a2f6ba70d08f35316e281

    SHA1

    b6cf341f272c62643fc098c81f5bf29cb4b7dbc8

    SHA256

    4af7c72253f706a407b2e7e476bc760a25f18cb644a4049b467257953165a5fc

    SHA512

    81553c0e54f420e137aadd472d8b15cc026d9db87726182591f090dcfe00d471a11881786b8e9173ae436877c14221637bcfd1d02f318a3b42fdc854abc2b250

  • C:\Users\Admin\AppData\Roaming\explorer.exe

    Filesize

    480KB

    MD5

    7a478a60432a2f6ba70d08f35316e281

    SHA1

    b6cf341f272c62643fc098c81f5bf29cb4b7dbc8

    SHA256

    4af7c72253f706a407b2e7e476bc760a25f18cb644a4049b467257953165a5fc

    SHA512

    81553c0e54f420e137aadd472d8b15cc026d9db87726182591f090dcfe00d471a11881786b8e9173ae436877c14221637bcfd1d02f318a3b42fdc854abc2b250

  • C:\Users\Admin\AppData\Roaming\explorer.exe

    Filesize

    480KB

    MD5

    7a478a60432a2f6ba70d08f35316e281

    SHA1

    b6cf341f272c62643fc098c81f5bf29cb4b7dbc8

    SHA256

    4af7c72253f706a407b2e7e476bc760a25f18cb644a4049b467257953165a5fc

    SHA512

    81553c0e54f420e137aadd472d8b15cc026d9db87726182591f090dcfe00d471a11881786b8e9173ae436877c14221637bcfd1d02f318a3b42fdc854abc2b250

  • memory/920-155-0x0000000075190000-0x0000000075741000-memory.dmp

    Filesize

    5.7MB

  • memory/920-159-0x0000000075190000-0x0000000075741000-memory.dmp

    Filesize

    5.7MB

  • memory/2088-132-0x0000000075190000-0x0000000075741000-memory.dmp

    Filesize

    5.7MB

  • memory/2088-157-0x0000000075190000-0x0000000075741000-memory.dmp

    Filesize

    5.7MB

  • memory/2088-133-0x0000000075190000-0x0000000075741000-memory.dmp

    Filesize

    5.7MB