Overview

overview

8

Static

static

3

cs16-eng.exe

windows10-2004-x64

8

cs16-eng.exe

windows11-ltsc_2024-x64

8

Sharing

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General

  • Target
    cs16-eng.exe
  • Size 262.2MB
  • Sample261014-stzndsty9k
  • SHA256 b2275e14444b3212c19b78cdf25f74851f4d4092f0e32ed4d35ddb6aee5a9c86
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
8/10
bootkitdefense_evasiondiscoveryinstallerpersistenceprivilege_escalation

Malware Config

Targets

    • Target
      cs16-eng.exe
    • Size 262.2MB
    • SHA256 b2275e14444b3212c19b78cdf25f74851f4d4092f0e32ed4d35ddb6aee5a9c86
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    8/10
    bootkitdefense_evasiondiscoveryinstallerpersistenceprivilege_escalation

    • Modifies Windows Firewall

      defense_evasion

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Loads dropped DLL

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

      discovery

    • Enumerates connected drives

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

    • Network Service Discovery

      Attempt to gather information on host's network.

      discovery

    • 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 Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Privilege Escalation

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Defense Evasion

Direct Volume Access

1
T1006

Impair Defenses

1
T1562

Disable or Modify System Firewall

1
T1562.004

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Credential Access

Discovery

Network Service Discovery

1
T1046

Peripheral Device Discovery

1
T1120

Query Registry

4
T1012

System Information Discovery

4
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

System Network Configuration Discovery

1
T1016

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks