Extracted

• • Target

    2b7720a936539736e36bb95fd6c61818

  • Size

    4.4MB

  • MD5

    2b7720a936539736e36bb95fd6c61818

  • SHA1

    b89323ad4d1f09227e097173420504f24e27e131

  • SHA256

    b3f483f00e80c0777858e6795f9f13bce726ff8265ef3e8cd3602cf1711247a2

  • SHA512

    d878072027b9aca3434c2b15cb4a3b4c9d097806719ac50ed731110faef2561fa179831804ad4624b7fa7b0fbd6f5927d5ab2fc078b918e13d21d88292f5bcad

  Score

  10^/10

  servhelperbackdoordiscoveryexploitpersistencetrojanupx

  • 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

  • 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

  • Uses the VBS compiler for execution

  • Drops file in System32 directory

  • Suspicious use of SetThreadContext

  behavioral1behavioral2