Overview

overview

8

Static

static

1

public.zip

windows7-x64

6

public.zip

windows10-2004-x64

8

Sharing

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General

  • Target

    public.zip

  • Size

    133KB

  • Sample

    230331-wjcbwsde8t

  • MD5

    5ec2c7864337423326b6676268144741

  • SHA1

    8a47c63f3311025a21c77c7db63d7e86b0a5a5b6

  • SHA256

    81afee9ed9a4c9fbff4027eecec036f0bfaf5a3a5c9f1d597c6d2b41593bcd54

  • SHA512

    47e9eabcdefe55ba01df2a15868f82afbca86aeb89ac807a7c71af54286266e591093dc3dadd79136662cba1d85ab675a4f1bd22c112168024c05f5b7fd47729

  • SSDEEP

    3072:pxzM/hCtgchO+U/LUBxphtB99vC7RGFgvzOzx166Ge:pGQtgcZ7uAMQLGe

Score
8/10
bootkitpersistenceransomware

Malware Config

Targets

    • Target

      public.zip

    • Size

      133KB

    • MD5

      5ec2c7864337423326b6676268144741

    • SHA1

      8a47c63f3311025a21c77c7db63d7e86b0a5a5b6

    • SHA256

      81afee9ed9a4c9fbff4027eecec036f0bfaf5a3a5c9f1d597c6d2b41593bcd54

    • SHA512

      47e9eabcdefe55ba01df2a15868f82afbca86aeb89ac807a7c71af54286266e591093dc3dadd79136662cba1d85ab675a4f1bd22c112168024c05f5b7fd47729

    • SSDEEP

      3072:pxzM/hCtgchO+U/LUBxphtB99vC7RGFgvzOzx166Ge:pGQtgcZ7uAMQLGe

    Score
    8/10
    persistencebootkitransomware

    • Blocklisted process makes network request

    • Executes dropped EXE

    • Adds Run key to start application

      persistence

    • Legitimate hosting services abused for malware hosting/C2

    • 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

    • Sets desktop wallpaper using registry

      ransomware
    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1
T1060

Bootkit

1
T1067

Privilege Escalation

Defense Evasion

Modify Registry

2
T1112

Credential Access

Discovery

Query Registry

4
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

3
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1
T1102

Impact

Defacement

1
T1491

Tasks