Overview

overview

9

Static

static

winosntkrnl.exe

windows7_x64

winosntkrnl.exe

windows10_x64

6

Sharing

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General

  • Target

    winosntkrnl.exe

  • Size

    2.1MB

  • Sample

    200712-an2b4qe1lj

  • MD5

    23959126c21fdda02365352cd3e03d28

  • SHA1

    05a025b6ad3f4b88084624234312767e9402202a

  • SHA256

    2a0ce8239387c614b1728bd9ec954e1e9ab985dde87e5976519ee1cfca1ee896

  • SHA512

    ad5326da158a3701aeb827084a425ab7e2633ca59837241da449b03d4be7b8f77c336748dc1cf0f7d4fd4928f6258c83c7fbda9a5b28686f36e0666f07c42084

Score
9/10
bootkitdiscoverypersistenceransomware

Malware Config

Targets

    • Target

      winosntkrnl.exe

    • Size

      2.1MB

    • MD5

      23959126c21fdda02365352cd3e03d28

    • SHA1

      05a025b6ad3f4b88084624234312767e9402202a

    • SHA256

      2a0ce8239387c614b1728bd9ec954e1e9ab985dde87e5976519ee1cfca1ee896

    • SHA512

      ad5326da158a3701aeb827084a425ab7e2633ca59837241da449b03d4be7b8f77c336748dc1cf0f7d4fd4928f6258c83c7fbda9a5b28686f36e0666f07c42084

    Score
    9/10
    bootkitpersistencediscoveryransomware

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

      ransomware

    • Modifies file permissions

      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 Matrix ATT&CK v6

Initial Access

Execution

Persistence

Bootkit

1
T1067

Privilege Escalation

Defense Evasion

File Deletion

2
T1107

File Permissions Modification

1
T1222

Modify Registry

1
T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Inhibit System Recovery

2
T1490

Tasks