Overview

overview

10

Static

static

3

e71d256a4b...f6.exe

windows7-x64

10

e71d256a4b...f6.exe

windows10-2004-x64

8

Sharing

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General

  • Target

    4674052e1bdaf5f0e51bf1a731e1b6e8.bin

  • Size

    4.1MB

  • Sample

    240611-chvmas1bjq

  • MD5

    444e26e7710be12d55ae340816e29d08

  • SHA1

    bfd9bea6c77863cbecfff302112c430bd9b00838

  • SHA256

    1a5679fe4a60df16cf509e02ddcd6a53951e7a3566ae51b92d15adc1b385ff38

  • SHA512

    f84ab9be694f2e41d31ef45fd9dd8b7421e085a5dce4b410ee6a2e01f4712618e79880fb977e024ab414417fd6311be595f0347f50ff74851400f1aec1986c5a

  • SSDEEP

    98304:ba9ZNoIVpZSRVy3rYTVB38P96AtuOgFa4C8gh6vVEjz7g/eyPeQQ4:5uSIGX8P9tuhC8g4E/7q9Q4

Score
10/10
bootkitevasionexecutionpersistence

Malware Config

Targets

    • Target

      e71d256a4b1f8aff106556a27fc45f1c48384232353bd8028f588ba6ef59c3f6.exe

    • Size

      5.3MB

    • MD5

      4674052e1bdaf5f0e51bf1a731e1b6e8

    • SHA1

      341a06ed501decaa13e94284e9cf3bc9dc74321c

    • SHA256

      e71d256a4b1f8aff106556a27fc45f1c48384232353bd8028f588ba6ef59c3f6

    • SHA512

      4b24c67097d9a172f4a8826af8489b8c0c5c0160b4da40b070340105cd056005062d214808a3296d5fcb349ad21a97044a36ad28b4eceb0f7f9713dc91536ec8

    • SSDEEP

      98304:7LSHPhEzeeUn3SLIeOrctwZlaqYPXg3zwPLsfN3x:7e569UisISalPXHPLsfNh

    Score
    10/10
    evasionexecutionpersistencebootkit

    • Modifies security service

      evasion

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

      execution

    • Creates new service(s)

      persistenceexecution

    • Drops file in Drivers directory

    • Sets service image path in registry

      persistence

    • Stops running service(s)

      evasionexecution

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Executes dropped EXE

    • Loads dropped DLL

    • Enumerates connected drives

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

    • 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

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

System Services

2
T1569

Service Execution

2
T1569.002

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

3
T1543

Windows Service

3
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

3
T1543

Windows Service

3
T1543.003

Defense Evasion

Impair Defenses

1
T1562

Modify Registry

2
T1112

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Credential Access

Discovery

Peripheral Device Discovery

1
T1120

Query Registry

5
T1012

System Information Discovery

4
T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Service Stop

1
T1489

Tasks