Overview

overview

10

Static

static

3

0e8a7e1488...b4.exe

windows10-2004-x64

10

0e8a7e1488...b4.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    0e8a7e1488d7e2ab614d36c7be3decfc66f3a8c0d1d997d6fc4bd23dbc3e9db4
  • Size 3.2MB
  • Sample260808-n1rh5szybw
  • SHA256 0e8a7e1488d7e2ab614d36c7be3decfc66f3a8c0d1d997d6fc4bd23dbc3e9db4
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
valleyrat_s2backdoorcredential_accessdefense_evasiondiscoveryevasionexecutionpersistenceransomwaretrojanupx

Malware Config

Extracted

Family

  • valleyrat_s2

Version

  • 1.0

C2

  • 154.12.19.70:22011

  • 154.12.19.70:22012

Targets

    • Target
      0e8a7e1488d7e2ab614d36c7be3decfc66f3a8c0d1d997d6fc4bd23dbc3e9db4
    • Size 3.2MB
    • SHA256 0e8a7e1488d7e2ab614d36c7be3decfc66f3a8c0d1d997d6fc4bd23dbc3e9db4
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    backdoorcredential_accessdefense_evasiondiscoveryevasionexecutionvalleyrat_s2persistenceransomwaretrojanupx

    • Detects ValleyRAT payload

    • Family: ValleyRat

      ValleyRat stage2 is a backdoor written in C++.

      backdoorvalleyrat_s2

    • Modifies Windows Defender Real-time Protection settings

      defense_evasiontrojan

    • Modifies Windows Defender TamperProtection settings

      evasiontrojan

    • Modifies Windows Defender notification settings

      defense_evasiontrojan

    • Modifies firewall policy service

      defense_evasion

    • UAC bypass

      defense_evasiontrojan

    • Windows security bypass

      defense_evasiontrojan

    • Server Software Component: Terminal Services DLL

      persistence

    • Boot or Logon Autostart Execution: LSASS Driver

      Adversaries may modify or add LSASS drivers to obtain persistence on compromised systems.

      persistencecredential_access

    • Executes dropped EXE

    • Loads dropped DLL

    • Windows security modification

      defense_evasiontrojan

    • Checks installed software on the system

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

      discovery

    • Checks whether UAC is enabled

      defense_evasiontrojan

    • Enumerates connected drives

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

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

      upx
    behavioral1behavioral2

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

LSASS Driver

1
T1547.008

Create or Modify System Process

4
T1543

Windows Service

4
T1543.003

Server Software Component

1
T1505

Terminal Services DLL

1
T1505.005

Privilege Escalation

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Boot or Logon Autostart Execution

1
T1547

LSASS Driver

1
T1547.008

Create or Modify System Process

4
T1543

Windows Service

4
T1543.003

Defense Evasion

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Impair Defenses

7
T1562

Disable or Modify System Firewall

1
T1562.004

Disable or Modify Tools

6
T1562.001

Modify Registry

8
T1112

Credential Access

OS Credential Dumping

1
T1003

LSASS Memory

1
T1003.001

Discovery

Peripheral Device Discovery

1
T1120

Query Registry

3
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks