Overview

overview

10

Static

static

3

0fcc20a3bd...c6.exe

windows10-2004-x64

10

0fcc20a3bd...c6.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    0fcc20a3bdfb89b516cab06ec7ce733b043c50b469e3f14c1b6904bda1b348c6
  • Size 1.6MB
  • Sample260906-spfpqaxbnd
  • SHA256 0fcc20a3bdfb89b516cab06ec7ce733b043c50b469e3f14c1b6904bda1b348c6
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
valleyrat_s2backdoordiscoveryexecutionpersistenceransomwarespywarestealer

Malware Config

Extracted

Family

  • valleyrat_s2

Version

  • 1.0

C2

  • 134.122.155.220:443

  • 134.122.155.220:80

Targets

    • Target
      0fcc20a3bdfb89b516cab06ec7ce733b043c50b469e3f14c1b6904bda1b348c6
    • Size 1.6MB
    • SHA256 0fcc20a3bdfb89b516cab06ec7ce733b043c50b469e3f14c1b6904bda1b348c6
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    backdoordiscoveryexecutionvalleyrat_s2persistenceransomwarespywarestealer

    • Family: ValleyRat

      ValleyRat stage2 is a backdoor written in C++.

      backdoorvalleyrat_s2

    • Executes dropped EXE

    • 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

    • 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.

    • Drops file in System32 directory

    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

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials from Password Stores

1
T1555

Credentials from Web Browsers

1
T1555.003

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Peripheral Device Discovery

2
T1120

Query Registry

4
T1012

System Information Discovery

4
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Exfiltration

Impact

Tasks