General

  • Target

    avast_free_antivirus_setup_online.exe

  • Size

    256KB

  • Sample

    230323-xwtblsbe8v

  • MD5

    057e7333d3bba6fe2bb40c08558bb5fb

  • SHA1

    98f03ebe57f27d99b6006f40e606e47f6f8301ea

  • SHA256

    d9a73d8c62ea233d579f5ced73022fd43fd4fbcd3ee8f59c353bfa8188ea3abc

  • SHA512

    3fd2d8e138efaa2cfb1f412f56702d2ad75fbcea5e787f02712f72a84afc7f576b754d8ae248ca1463b1df9bca8fee470d0d2f98101617edcfc7d945d868d901

  • SSDEEP

    6144:8CfHrZae3GFqRQcMeh4WpywpjchNCPnMebLW:8CfLZadcM24fRNjeHW

Score
8/10

Malware Config

Targets

    • Target

      avast_free_antivirus_setup_online.exe

    • Size

      256KB

    • MD5

      057e7333d3bba6fe2bb40c08558bb5fb

    • SHA1

      98f03ebe57f27d99b6006f40e606e47f6f8301ea

    • SHA256

      d9a73d8c62ea233d579f5ced73022fd43fd4fbcd3ee8f59c353bfa8188ea3abc

    • SHA512

      3fd2d8e138efaa2cfb1f412f56702d2ad75fbcea5e787f02712f72a84afc7f576b754d8ae248ca1463b1df9bca8fee470d0d2f98101617edcfc7d945d868d901

    • SSDEEP

      6144:8CfHrZae3GFqRQcMeh4WpywpjchNCPnMebLW:8CfLZadcM24fRNjeHW

    Score
    8/10
    • Downloads MZ/PE file

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Checks for any installed AV software in registry

    • 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

Defense Evasion

Modify Registry

2
T1112

Install Root Certificate

1
T1130

Discovery

Security Software Discovery

1
T1063

Query Registry

1
T1012

System Information Discovery

1
T1082

Tasks