Overview

overview

10

Static

static

1

d3e9dfaece...8c.exe

windows7_x64

10

d3e9dfaece...8c.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    d3e9dfaece3d3b80d787bd37558d11d0033746114cb1baf4cadadaeb7c09588c

  • Size

    2.6MB

  • Sample

    220524-r68w6afba5

  • MD5

    46ee7635d56bce4a798e33210c550229

  • SHA1

    a937c3d1e97ea40d61c1f8a53310632044a57a84

  • SHA256

    d3e9dfaece3d3b80d787bd37558d11d0033746114cb1baf4cadadaeb7c09588c

  • SHA512

    76bdc9cde357e775e30b8bff22763142b709f035239b0b02fc8f4c26f84cbddc0a1ae928ae9d6eb73dbeec33b438584afc15fb1f64f0e1b52df89cf5003fea5a

Score
10/10
servhelperbackdoordiscoveryexploitpersistencetrojanupx

Malware Config

Targets

    • Target

      d3e9dfaece3d3b80d787bd37558d11d0033746114cb1baf4cadadaeb7c09588c

    • Size

      2.6MB

    • MD5

      46ee7635d56bce4a798e33210c550229

    • SHA1

      a937c3d1e97ea40d61c1f8a53310632044a57a84

    • SHA256

      d3e9dfaece3d3b80d787bd37558d11d0033746114cb1baf4cadadaeb7c09588c

    • SHA512

      76bdc9cde357e775e30b8bff22763142b709f035239b0b02fc8f4c26f84cbddc0a1ae928ae9d6eb73dbeec33b438584afc15fb1f64f0e1b52df89cf5003fea5a

    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.

    • 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

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Deletes itself

    • Loads dropped DLL

    • Modifies file permissions

      discovery

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Enterprise v6

Tasks