Overview

overview

8

Static

static

3

O9A.exe

windows10-2004-x64

8

O9A.exe

windows11-21h2-x64

8

Sharing

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General

  • Target
    O9A.exe
  • Size 90KB
  • Sample260617-e4t9rsaw2q
  • SHA256 c86ba08ead6f7fb8d394718f227cb7167573a15d6a51cacfa9d07a65372bc33a
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
8/10
bootkitdefense_evasiondiscoveryexploitpersistence

Malware Config

Targets

    • Target
      O9A.exe
    • Size 90KB
    • SHA256 c86ba08ead6f7fb8d394718f227cb7167573a15d6a51cacfa9d07a65372bc33a
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    8/10
    bootkitdefense_evasiondiscoveryexploitpersistence

    • Drops file in Drivers directory

    • Manipulates Digital Signatures

      Attackers can apply techniques such as modifying certain DLL exports to make their binary seem valid.

    • Possible privilege escalation attempt

      exploit

    • Boot or Logon Autostart Execution: Print Processors

      Adversaries may abuse print processors to run malicious DLLs during system boot for persistence and/or privilege escalation.

      persistence

    • Modifies file permissions

      discovery

    • Drops desktop.ini file(s)

    • Indicator Removal: File Deletion

      Adversaries may delete files left behind by the actions of their intrusion activity.

      defense_evasion

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

      bootkitpersistence

    • Drops autorun.inf file

      Malware can abuse Windows Autorun to spread further via attached volumes.

    • Drops file in System32 directory

    • Modifies termsrv.dll

      Commonly used to allow simultaneous RDP sessions.

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks