Extracted

• • Target

    63c81bd2299db58959013ff55b6f3698

  • Size

    7.0MB

  • MD5

    63c81bd2299db58959013ff55b6f3698

  • SHA1

    ca9b8ed3f8d10d1e01411eb66e80549039e7591d

  • SHA256

    3c41569f2ba7a3e123f2156e541c52fc924897a49a34139b87d5a1b93fb1f94d

  • SHA512

    26af4f5aee0a015ac011eae176fcd65d9686ec60bcfaa05fb98d5e9078e2cd2d5f3b36cdcfe199def58140736d388205f19a50e0a1b50fc5d5c2f0aa951778cb

  Score

  10^/10

  servhelperbackdoordiscoveryexploitpersistencetrojanupx

  • ServHelper

    ServHelper is a backdoor written in Delphi and is associated with the hacking group TA505.

    trojanbackdoorservhelper

  • Grants admin privileges

    Uses net.exe to modify the user's privileges.

  • Blocklisted process makes network request

  • Executes dropped EXE

  • Modifies RDP port number used by Windows

  • Possible privilege escalation attempt

    exploit

  • Sets DLL path for service in the registry

    persistence

  • UPX packed file

    Detects executables packed with UPX/modified UPX open source packer.

    upx

  • Deletes itself

  • Loads dropped DLL

  • Modifies file permissions

    discovery

  • Drops file in System32 directory

  • Suspicious use of SetThreadContext

  behavioral1behavioral2