General

  • Target

    http://80.66.75.37/a-Lyrdbmzywx.exe

  • Sample

    230325-t9b3psde68

Malware Config

Targets

    • Target

      http://80.66.75.37/a-Lyrdbmzywx.exe

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Sets service image path in registry

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Registers COM server for autorun

    • Windows security modification

    • 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.

    • Drops file in System32 directory

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

3
T1060

Bootkit

1
T1067

Defense Evasion

Modify Registry

4
T1112

Disabling Security Tools

1
T1089

Credential Access

Credentials in Files

1
T1081

Discovery

Security Software Discovery

1
T1063

Query Registry

5
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

3
T1082

Collection

Data from Local System

1
T1005

Tasks