Extracted

• • Target

    b4b4e78ce6633cc8662dfde524de61a8bdfdc92c0f69fb9e3d68f6f34597dde5

  • Size

    3.8MB

  • MD5

    213d018805394eb6e12f57005f1d45e0

  • SHA1

    b01887dc649cb1209abdad8ce9ea59ec33d1c6b2

  • SHA256

    b4b4e78ce6633cc8662dfde524de61a8bdfdc92c0f69fb9e3d68f6f34597dde5

  • SHA512

    c0334c5e90c3e5edd09c9ac7a7c5792bcdf43b4fd9362e5c573d6f0729d5c71db611967a9d5c417d430575a951e6270d7049879711db1a38598a2f16d486233c

  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

  • 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

  behavioral1behavioral2