Overview

overview

8

Static

static

3

layuh.exe

windows10-2004-x64

8

Sharing

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General

  • Target
    layuh.exe
  • Size 2.5MB
  • Sample260819-vvv3psygjd
  • SHA256 ff478544cdfdfc21247c5f4b8b55c555120d91d1235bf3771617ee79276740a6
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
8/10
discoveryexecutionpersistenceprivilege_escalationransomware

Malware Config

Targets

    • Target
      layuh.exe
    • Size 2.5MB
    • SHA256 ff478544cdfdfc21247c5f4b8b55c555120d91d1235bf3771617ee79276740a6
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    8/10
    discoveryexecutionpersistenceprivilege_escalationransomware

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

      persistenceprivilege_escalation

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Checks installed software on the system

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

      discovery

    • Drops desktop.ini file(s)

    • Enumerates connected drives

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

    • Drops file in System32 directory

    behavioral1

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

Windows Command Shell

1
T1059.003

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Event Triggered Execution

1
T1546

Component Object Model Hijacking

1
T1546.015

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Event Triggered Execution

1
T1546

Component Object Model Hijacking

1
T1546.015

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

Browser Information Discovery

1
T1217

Peripheral Device Discovery

2
T1120

Query Registry

6
T1012

System Information Discovery

6
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

System Time Discovery

1
T1124

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks