Overview

overview

8

Static

static

3

cdm (3).exe

windows10-ltsc_2021-x64

7

cdm (3).exe

windows11-21h2-x64

8

Sharing

Copy URL Twitter E-mail

General

  • Target
    cdm (3).exe
  • Size 6.6MB
  • Sample260814-2fk3hsshng
  • SHA256 428f5531b56e4568f266d9481ad716582344218ceb1cafe6042ce5da4c51b6b4
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
8/10
bootkitdefense_evasiondiscoveryexecutioninstallerpersistencespywaretrojan

Malware Config

Targets

    • Target
      cdm (3).exe
    • Size 6.6MB
    • SHA256 428f5531b56e4568f266d9481ad716582344218ceb1cafe6042ce5da4c51b6b4
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    8/10
    discoveryinstallerpersistencebootkitdefense_evasionexecutionspywaretrojan

    • Uses Session Manager for persistence

      Creates Session Manager registry key to run executable early in system boot.

      persistence

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies file permissions

      discovery

    • Stops running service(s)

      defense_evasionexecution

    • 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.

      discovery

    • Contacts third-party web service commonly abused for C2

      Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

    • Drops desktop.ini file(s)

    • Writes to the Master Boot Record (MBR)

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

      bootkitpersistence

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1
T1569

Service Execution

1
T1569.002

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Defense Evasion

File and Directory Permissions Modification

1
T1222

Impair Defenses

1
T1562

Modify Registry

2
T1112

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Subvert Trust Controls

1
T1553

Install Root Certificate

1
T1553.004

Credential Access

Discovery

Query Registry

3
T1012

Software Discovery

1
T1518

Security Software Discovery

1
T1518.001

System Information Discovery

2
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Command and Control

Web Service

1
T1102

Exfiltration

Impact

Service Stop

1
T1489

Tasks