Overview

overview

10

Static

static

3

e8e9df7925...26.exe

windows10-2004-x64

10

e8e9df7925...26.exe

windows11-21h2-x64

10

Sharing

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General

  • Target
    e8e9df79257bea763a14fc5493e653f2201a579fb1d7d0e31a56310e41fc5126
  • Size 2.1MB
  • Sample260415-d3qdrahv2w
  • SHA256 e8e9df79257bea763a14fc5493e653f2201a579fb1d7d0e31a56310e41fc5126
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
valleyrat_s2backdoordefense_evasiondiscoveryexecutioninstallerpersistence

Malware Config

Extracted

Family

  • valleyrat_s2

Version

  • 1.0

C2

  • 108.187.4.158:557

  • 108.187.4.158:558

  • 127.0.0.1:80

Attributes
  • campaign_date

    2026. 4. 1

Targets

    • Target
      e8e9df79257bea763a14fc5493e653f2201a579fb1d7d0e31a56310e41fc5126
    • Size 2.1MB
    • SHA256 e8e9df79257bea763a14fc5493e653f2201a579fb1d7d0e31a56310e41fc5126
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    backdoordefense_evasiondiscoveryexecutionvalleyrat_s2installerpersistence

    • Family: ValleyRat

      ValleyRat stage2 is a backdoor written in C++.

      backdoorvalleyrat_s2

    • Sets service image path in registry

      This determines the executable launched when a service starts. It can be used to establish persistence.

      persistence

    • 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

    • Enumerates connected drives

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

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Persistence

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

2
T1547.001

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

2
T1547.001

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Modify Registry

2
T1112

Credential Access

Discovery

Peripheral Device Discovery

1
T1120

Query Registry

2
T1012

System Information Discovery

2
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks