Overview

overview

10

Static

static

1

taas.png

windows10-2004-x64

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General

  • Target

    taas.png

  • Size

    482KB

  • Sample

    240702-1mecwa1dmb

  • MD5

    5cdee96ab62ae22eaced595bbe8e9eb4

  • SHA1

    c258fd9b3d6adce3b30cdbb43f8783d12800082a

  • SHA256

    957e27a1546f944c33967f491f184484717b6aab8bf57fcb9b121c22b49d789f

  • SHA512

    ca9acb73f52d685656af6bf4457f686e894a3fc34029d72fad2bcbf3bbfb79bcdca0e51188f57f31802fd06f7d671f0ed3d5034f2e4d52cbee04a82b7d7a91e0

  • SSDEEP

    12288:iDVrZ0KGNJDi5eQDoxqgVm5K/oea9aDXY3ax+KdxaAX8ZVJxbzamWQ2:u9Z0KGP3Q0YgCK/T6azxx+KjXGVDbEh

Score
10/10
bootkitdiscoveryevasionexploitpersistenceransomwaretrojan

Malware Config

Targets

    • Target

      taas.png

    • Size

      482KB

    • MD5

      5cdee96ab62ae22eaced595bbe8e9eb4

    • SHA1

      c258fd9b3d6adce3b30cdbb43f8783d12800082a

    • SHA256

      957e27a1546f944c33967f491f184484717b6aab8bf57fcb9b121c22b49d789f

    • SHA512

      ca9acb73f52d685656af6bf4457f686e894a3fc34029d72fad2bcbf3bbfb79bcdca0e51188f57f31802fd06f7d671f0ed3d5034f2e4d52cbee04a82b7d7a91e0

    • SSDEEP

      12288:iDVrZ0KGNJDi5eQDoxqgVm5K/oea9aDXY3ax+KdxaAX8ZVJxbzamWQ2:u9Z0KGP3Q0YgCK/T6azxx+KjXGVDbEh

    Score
    10/10
    bootkitdiscoveryevasionexploitpersistenceransomwaretrojan

    • Modifies WinLogon for persistence

      persistence

    • UAC bypass

      evasiontrojan

    • Disables Task Manager via registry modification

      evasion

    • Possible privilege escalation attempt

      exploit

    • Checks computer location settings

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

    • Executes dropped EXE

    • 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

    • Sets desktop wallpaper using registry

      ransomware
    behavioral1

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1
T1547

Winlogon Helper DLL

1
T1547.004

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Winlogon Helper DLL

1
T1547.004

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Defense Evasion

Modify Registry

4
T1112

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Impair Defenses

1
T1562

Disable or Modify Tools

1
T1562.001

File and Directory Permissions Modification

1
T1222

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Credential Access

Discovery

Query Registry

2
T1012

System Information Discovery

3
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Defacement

1
T1491

Resource Development

Reconnaissance

Tasks