Overview

overview

10

Static

static

6774f8a7d9...6c.exe

windows7_x64

10

6774f8a7d9...6c.exe

windows10_x64

10

Sharing

Copy URL Twitter E-mail

General

  • Target
    6774f8a7d95a58ddab16d1c792ec846c
  • Size 4.5MB
  • Sample210618-dz577wl6dj
  • SHA256 eb02c967fb3feaf5504a78de8a7e0513c2c4e52ddf2243bfbcb10e83954baaad
  • MD5 SHA1 SHA512
Score
10/10
servhelperbackdoordiscoveryexploitpersistencetrojanupx

Malware Config

Extracted

Language

  • ps1

Deobfuscated
Source
URLs
  • ps1.dropper

    https://raw.githubusercontent.com/sqlitey/sqlite/master/speed.ps1

Targets

    • Target
      6774f8a7d95a58ddab16d1c792ec846c
    • Size 4.5MB
    • SHA256 eb02c967fb3feaf5504a78de8a7e0513c2c4e52ddf2243bfbcb10e83954baaad
    • MD5 SHA1 SHA512
    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

    • Loads dropped DLL

    • Modifies file permissions

      discovery

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Enterprise v6

Tasks