Overview

overview

10

Static

static

5

frpc.exe

windows10-2004-x64

10

frpc.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    frpc.exe
  • Size 402KB
  • Sample260826-zybwfswfnd
  • SHA256 30892007b6929ea5a77f2628d71aeee05fa0c070469bf4395aa520adefcff429
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
costuradiscoveryexecutionpackerpersistence

Malware Config

Targets

    • Target
      frpc.exe
    • Size 402KB
    • SHA256 30892007b6929ea5a77f2628d71aeee05fa0c070469bf4395aa520adefcff429
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    discoveryexecutionpersistencecosturapacker

    • Modifies WinLogon for persistence

      persistence

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

      discovery
    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

Windows Command Shell

1
T1059.003

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Persistence

Boot or Logon Autostart Execution

1
T1547

Winlogon Helper DLL

1
T1547.004

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Winlogon Helper DLL

1
T1547.004

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

Browser Information Discovery

1
T1217

Query Registry

3
T1012

System Information Discovery

3
T1082

System Network Configuration Discovery

1
T1016

Internet Connection Discovery

1
T1016.001

System Time Discovery

1
T1124

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks