General

  • Target

    https://weishi.360.cn/

  • Sample

    230407-lqds7aaf3x

Malware Config

Targets

    • Target

      https://weishi.360.cn/

    • Modifies security service

    • Modifies boot configuration data using bcdedit

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Sets file execution options in registry

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies system executable filetype association

    • Registers COM server for autorun

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Unexpected DNS network traffic destination

      Network traffic to other servers than the configured DNS servers was detected on the DNS port.

    • Adds Run key to start application

    • Checks for any installed AV software in registry

    • Checks installed software on the system

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

    • Writes to the Master Boot Record (MBR)

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

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

3
T1060

Change Default File Association

1
T1042

Bootkit

1
T1067

Defense Evasion

Modify Registry

4
T1112

Discovery

Query Registry

3
T1012

System Information Discovery

3
T1082

Security Software Discovery

1
T1063

Impact

Inhibit System Recovery

1
T1490

Tasks