Extracted

• • Target
    f250cb14a5ab5ada5aa6d9d18a20b075
  • Size 491KB
  • SHA256 fe65170a6f6cd5ba0df997262bca40350b650067db206bc83bfaf80da94bba9e
  • MD5 f250cb14a5ab5ada5aa6d9d18a20b075
  • SHA1 789475ac6d5fda814f46a26246d0f931f41b6ba3
  • SHA512 f3119126a9c29e71f1c2eb531e61bde10eb713f3e46128d4dabddde8b54152555490b51eabbfcfc82c7906cf439124e16cb26f50e939e88d830ba048c4008147
  • MD5 SHA1 SHA512

  Score

  10^/10

  servhelperbackdoordiscoveryexploitpersistencespywarestealertrojanupx

  • ServHelper

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

    trojanbackdoorservhelper

  • Core1 .NET packer

    Detects packer/loader used by .NET malware.

  • Grants admin privileges

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

  • Blocklisted process makes network request

  • Downloads MZ/PE file

  • 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

  • Reads user/profile data of local email clients

    Email clients store some user data on disk where infostealers will often target it.

    spywarestealer

  • Reads user/profile data of web browsers

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer

  • Uses the VBS compiler for execution

  • Checks installed software on the system

    Looks up Uninstall key entries in the registry to enumerate software on the system.

    discovery

  • Drops file in System32 directory

  • Suspicious use of SetThreadContext

  behavioral1behavioral2