General

  • Target

    http://wavebrowser.co

  • Sample

    220122-yblayachhj

Malware Config

Targets

    • Target

      http://wavebrowser.co

    • Registers COM server for autorun

    • Suspicious use of NtCreateProcessExOtherParentProcess

    • ACProtect 1.3x - 1.4x DLL software

      Detects file using ACProtect software.

    • Creates new service(s)

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Executes dropped EXE

    • Modifies Installed Components in the registry

    • Sets file execution options in registry

    • Sets service image path in registry

    • Stops running service(s)

    • UPX packed file

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

    • Checks computer location settings

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

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • 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.

    • Checks whether UAC is enabled

    • Drops desktop.ini file(s)

    • Installs/modifies Browser Helper Object

      BHOs are DLL modules which act as plugins for Internet Explorer.

    • Drops file in System32 directory

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Registry Run Keys / Startup Folder

5
T1060

New Service

1
T1050

Modify Existing Service

1
T1031

Browser Extensions

1
T1176

Scheduled Task

1
T1053

Privilege Escalation

New Service

1
T1050

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

8
T1112

Impair Defenses

1
T1562

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

5
T1012

System Information Discovery

6
T1082

Security Software Discovery

1
T1063

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

1
T1005

Impact

Service Stop

1
T1489

Tasks