General

  • Target

    https://mega.nz/file/dVo31I6A#ZcoYTJffHohVB1U_0hsI9YLAngdsrLuGvKbj8jJkFh4

  • Sample

    221003-jattcsegdj

Malware Config

Targets

    • Target

      https://mega.nz/file/dVo31I6A#ZcoYTJffHohVB1U_0hsI9YLAngdsrLuGvKbj8jJkFh4

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Executes dropped EXE

    • Possible privilege escalation attempt

    • Checks computer location settings

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

    • Loads dropped DLL

    • Modifies file permissions

    • 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.

    • 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

Registry Run Keys / Startup Folder

1
T1060

Bootkit

1
T1067

Hidden Files and Directories

1
T1158

Defense Evasion

File Permissions Modification

1
T1222

Modify Registry

2
T1112

Install Root Certificate

1
T1130

Hidden Files and Directories

1
T1158

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

4
T1012

System Information Discovery

4
T1082

Security Software Discovery

1
T1063

Collection

Data from Local System

1
T1005

Tasks