General

  • Target

    minecraft-install.exe

  • Size

    10.8MB

  • Sample

    220428-spc9lahde5

  • MD5

    f65f31dea4f3fe429924d205dbe1957d

  • SHA1

    a0dbce5c0e3e5b70f294ec975739561e2d6addf5

  • SHA256

    a700884429f6c0c203f144b40437635365ced67deb98644a7a9f1c60b9ff48e5

  • SHA512

    cbf3183b185c153d2130512f4234a1c62dfe7c1d4be5a0df272b6396a06fc62b34160a7a59e6201387e773946b5ffcd370deae59bda46abe1c894ce7a85df9b5

Malware Config

Targets

    • Target

      minecraft-install.exe

    • Size

      10.8MB

    • MD5

      f65f31dea4f3fe429924d205dbe1957d

    • SHA1

      a0dbce5c0e3e5b70f294ec975739561e2d6addf5

    • SHA256

      a700884429f6c0c203f144b40437635365ced67deb98644a7a9f1c60b9ff48e5

    • SHA512

      cbf3183b185c153d2130512f4234a1c62dfe7c1d4be5a0df272b6396a06fc62b34160a7a59e6201387e773946b5ffcd370deae59bda46abe1c894ce7a85df9b5

    • Modifies system executable filetype association

    • Registers COM server for autorun

    • Modifies boot configuration data using bcdedit

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Executes dropped EXE

    • Modifies Installed Components in the registry

    • Sets service image path in registry

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • 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.

    • 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.

    • Checks whether UAC is enabled

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Installs/modifies Browser Helper Object

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

    • Maps connected drives based on registry

      Disk information is often read in order to detect sandboxing environments.

    • 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

Change Default File Association

1
T1042

Registry Run Keys / Startup Folder

4
T1060

Browser Extensions

1
T1176

Bootkit

1
T1067

Defense Evasion

Modify Registry

8
T1112

File Permissions Modification

1
T1222

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

8
T1012

System Information Discovery

9
T1082

Security Software Discovery

1
T1063

Peripheral Device Discovery

3
T1120

Collection

Data from Local System

1
T1005

Impact

Inhibit System Recovery

1
T1490

Tasks