Analysis

  • max time kernel
    151s
  • max time network
    65s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    15-05-2021 11:43

General

  • Target

    7f200ea4c19dcd2d2f9e83e9758034af1ab06cc110b030752b0a1934d5974eda.exe

  • Size

    422KB

  • MD5

    3d75142ef2b8f2ea07efb85d99e72610

  • SHA1

    d4be52a1d0ab8198aa1e007b8252dbb147fd070a

  • SHA256

    7f200ea4c19dcd2d2f9e83e9758034af1ab06cc110b030752b0a1934d5974eda

  • SHA512

    491b18106202c86d0bcaea73c18e7bcfe97eaaa7ebe63c35b1dacb6f672053af7fd0db68e5f868b8c5278576a5436133020057f38c6aab40728597d3acb2e4d3

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 2 IoCs
  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Drops file in Drivers directory 2 IoCs
  • Sets service image path in registry 2 TTPs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Installs/modifies Browser Helper Object 2 TTPs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Modifies WinLogon 2 TTPs 1 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7f200ea4c19dcd2d2f9e83e9758034af1ab06cc110b030752b0a1934d5974eda.exe
    "C:\Users\Admin\AppData\Local\Temp\7f200ea4c19dcd2d2f9e83e9758034af1ab06cc110b030752b0a1934d5974eda.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Modifies system executable filetype association
    • Drops file in Drivers directory
    • Adds Run key to start application
    • Modifies WinLogon
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:1916
    • C:\Windows\SysWOW64\reg.exe
      reg delete "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects" /f
      2⤵
        PID:1356

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Persistence

    Winlogon Helper DLL

    2
    T1004

    Change Default File Association

    1
    T1042

    Registry Run Keys / Startup Folder

    2
    T1060

    Browser Extensions

    1
    T1176

    Defense Evasion

    Modify Registry

    6
    T1112

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1356-59-0x0000000000000000-mapping.dmp
    • memory/1916-60-0x0000000075D51000-0x0000000075D53000-memory.dmp
      Filesize

      8KB