
해당 문제는 root me의 Deleted file문제에 대한 풀이입니다.해당 challenge 파일을 다운로드 해보면 아래와 같은 .gz의 압축파일을 다운 받을 수 있다.해당 압축파일을 바로 hxd로 확인해 보았지만 의미있는것은 찾지 못했다.압축파일을 풀었는데 예상한것과는 다른 것이 풀어졌다.위 알집을 통해 풀려고 했을 때는 ch39라는 파일이 나올 것 같았지만 윈도우로 압축을 푸니 usb.image 파일이 생성되었다.뭐 일단 image 파일이 나왔으니 FTK Imager로 분석을 해보아야한다.root 폴더가 있는것이 확인됐다. 확인해보니 아래와 같이 anonyme.png라는 사진이 있었다.해당 사진을 상단 view files in plain text 아이콘을 눌러 텍스트로 바꿔주면 flag를 찾을 수..

해당 문제는 CyberDefenders의 Red Stealer문제에 대한 풀이입니다.1. Challenge descriptionYou are part of the Threat Intelligence team in the SOC (Security Operations Center). An executable file has been discovered on a colleague's computer, and it's suspected to be linked to a Command and Control (C2) server, indicating a potential malware infection. Your task is to investigate this executable by analyzing its ha..

해당 문제는 CyberDefenders의 Reveal 문제에 대한 풀이입니다.1. Challenge descriptionAs a cybersecurity analyst for a leading financial institution, an alert from your SIEM solution has flagged unusual activity on an internal workstation. Given the sensitive financial data at risk, immediate action is required to prevent potential breaches. Your task is to delve into the provided memory dump from the compromised ..

해당 문제는 CyberDefenders의 OpenWire문제에 대한 풀이입니다.1. Challenge descriptionDuring your shift as a tier-2 SOC analyst, you receive an escalation from a tier-1 analyst regarding a public-facing server. This server has been flagged for making outbound connections to multiple suspicious IPs. In response, you initiate the standard incident response protocol, which includes isolating the server from the netw..

해당 문제는 CyberDefenders의 BlueSky Ransomware문제에 대한 풀이입니다.1. Challenge descriptionAs a cybersecurity analyst on SecureTech's Incident Response Team, you're tackling an urgent case involving a high-profile corporation that suspects a sophisticated cyber attack on its network. The corporation, which manages critical data across various industries, has experienced a ransomware attack, leading to the en..

해당 문제는 CyberDefenders의 PsExec Hunt문제에 대한 풀이입니다.1. Challenge descriptionOur Intrusion Detection System (IDS) has raised an alert, indicating suspicious lateral movement activity involving the use of PsExec. To effectively respond to this incident, your role as a SOC Analyst is to analyze the captured network traffic stored in a PCAP file.Q1.In order to effectively trace the attacker's activities ..