Overview

overview

10

Static

static

10

$RUJ39AT.exe

windows7-x64

7

$RUJ39AT.exe

windows10-2004-x64

9

Sharing

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General

  • Target
    $RUJ39AT.exe
  • Size 31.3MB
  • Sample240726-fvphlayapp
  • SHA256 e08629b64da23af97bbbbbbb3c8ff11c2f0572898e993224ec33ccb3680fe39f
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
pysilondiscoveryevasionexecutionpersistencepyinstallerupx

Malware Config

Targets

    • Target
      $RUJ39AT.exe
    • Size 31.3MB
    • SHA256 e08629b64da23af97bbbbbbb3c8ff11c2f0572898e993224ec33ccb3680fe39f
    • MD5 SHA1 SHA512 SSDEEP
    Score
    9/10
    upxdiscoveryevasionexecutionpersistence

    • Enumerates VirtualBox DLL files

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

      execution

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

      evasion

    • Executes dropped EXE

    • Loads dropped DLL

    • UPX packed file

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

      upx

    • Adds Run key to start application

      persistence

    • Legitimate hosting services abused for malware hosting/C2

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

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

Hide Artifacts

2
T1564

Hidden Files and Directories

2
T1564.001

Modify Registry

1
T1112

Virtualization/Sandbox Evasion

1
T1497

Credential Access

Discovery

Browser Information Discovery

1
T1217

File and Directory Discovery

1
T1083

Query Registry

1
T1012

System Information Discovery

1
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Virtualization/Sandbox Evasion

1
T1497

Lateral Movement

Collection

Command and Control

Web Service

1
T1102

Exfiltration

Impact

Tasks