Overview

overview

8

Static

static

1

avast_free...1).exe

windows7-x64

8

avast_free...1).exe

windows10-2004-x64

8

Resubmissions

30-03-2023 00:55

230330-a93qwaad93 8

28-03-2023 01:07

230328-bgwbrsgb75 8

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General

  • Target

    avast_free_antivirus_setup_online (1).exe

  • Size

    256KB

  • Sample

    230328-bgwbrsgb75

  • MD5

    61d6e65726ef4213f39129401b03b42f

  • SHA1

    7ea027968788524f5bcfbae6baf9278c6c88056e

  • SHA256

    5228862677a02d1f680169e5efd6c8ab5a420be7ff80766d73b1109ce2023dc2

  • SHA512

    c55adc484dcb6e0c2d716f997faa1ed14cc2d281073cad40ad77b723c999bc5069b16dfcf3bd8b8306db6fd1d429c37bc30470d93e73f70300217a9be6772b41

  • SSDEEP

    6144:bCfHrZae3GFqRQcMeh4WpywpjchNCPyyeb:bCfLZadcM24fRN4e

Score
8/10
bootkitpersistence

Malware Config

Targets

    • Target

      avast_free_antivirus_setup_online (1).exe

    • Size

      256KB

    • MD5

      61d6e65726ef4213f39129401b03b42f

    • SHA1

      7ea027968788524f5bcfbae6baf9278c6c88056e

    • SHA256

      5228862677a02d1f680169e5efd6c8ab5a420be7ff80766d73b1109ce2023dc2

    • SHA512

      c55adc484dcb6e0c2d716f997faa1ed14cc2d281073cad40ad77b723c999bc5069b16dfcf3bd8b8306db6fd1d429c37bc30470d93e73f70300217a9be6772b41

    • SSDEEP

      6144:bCfHrZae3GFqRQcMeh4WpywpjchNCPyyeb:bCfLZadcM24fRN4e

    Score
    8/10
    bootkitpersistence

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Loads dropped DLL

    • 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.

      bootkitpersistence
    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Bootkit

1
T1067

Privilege Escalation

Defense Evasion

Install Root Certificate

1
T1130

Modify Registry

1
T1112

Credential Access

Discovery

Security Software Discovery

1
T1063

Query Registry

1
T1012

System Information Discovery

1
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks