Overview

overview

8

Static

static

3

2024-05-12...uk.exe

windows7-x64

8

2024-05-12...uk.exe

windows10-2004-x64

8

Sharing

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General

  • Target
    2024-05-12_eb7971a0d37835bcf1407036f93abf42_ryuk
  • Size 483KB
  • Sample240512-lsfessdc59
  • SHA256 d892f5e68252725f159bca1ad9a20fc7f8243436218d2f0c311d92ee4c200a95
  • MD5 SHA1 SHA512 SSDEEP
Score
8/10
discoveryevasionexploitpersistencespywarestealer

Malware Config

Targets

    • Target
      2024-05-12_eb7971a0d37835bcf1407036f93abf42_ryuk
    • Size 483KB
    • SHA256 d892f5e68252725f159bca1ad9a20fc7f8243436218d2f0c311d92ee4c200a95
    • MD5 SHA1 SHA512 SSDEEP
    Score
    8/10
    discoveryevasionexploitpersistencespywarestealer

    • Blocklisted process makes network request

    • Modifies Windows Firewall

      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

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

      spywarestealer

    • Adds Run key to start application

      persistence

    • Drops autorun.inf file

      Malware can abuse Windows Autorun to spread further via attached volumes.

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Replication Through Removable Media

1
T1091

Execution

Command and Scripting Interpreter

1
T1059

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Defense Evasion

File and Directory Permissions Modification

1
T1222

Hide Artifacts

1
T1564

Hidden Files and Directories

1
T1564.001

Impair Defenses

1
T1562

Disable or Modify System Firewall

1
T1562.004

Modify Registry

1
T1112

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

1
T1012

System Information Discovery

3
T1082

Lateral Movement

Replication Through Removable Media

1
T1091

Collection

Data from Local System

1
T1005

Command and Control

Exfiltration

Impact

Tasks