Extracted

• • Target

    ViJoy.bin

  • Size

    6.0MB

  • MD5

    03051f3c44a2c8d196c95ea458b0aff4

  • SHA1

    d19a86e11cccdf978ca2d1455d7026d7879869f7

  • SHA256

    555f654fb51e632ba2cf49b865b6de5f5772ffba0229d73021a1c6a6f65dab08

  • SHA512

    883e31033107ee9f008d34e84638fca2ee085e6cc7c41a288d1663a31beac7109efe718ab7f38f682c8e01a99736e3832c539c95fd4bf25124fed4c9e9eeba46

  Score

  10^/10

  servhelperbackdoorbootkitdiscoveryexploitpersistencetrojanupx

  • 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

  • Loads dropped DLL

  • Modifies file permissions

    discovery

  • Writes to the Master Boot Record (MBR)

    Bootkits write to the MBR to gain persistence at a level below the operating system.

    bootkitpersistence

  • Drops file in System32 directory

  behavioral1behavioral2