Jean-Pierre LESUEUR
Lead Developer / Malware Researcher at Phrozen

With over 15 years of experience in Information Technology, I am a seasoned Security Researcher, Penetration Tester and Malware Researcher/Reverse Engineer. My expertise extends to development, proficient in languages such as C#, Python, Pascal/Delphi, and Assembly x86. In 2014, I founded PHROZEN, a venture dedicated to creating innovative cybersecurity solutions. My commitment lies in safeguarding our digital future, continuously advancing in knowledge and developing cutting-edge security measures.

Contributed Techniques
Technique Name Technique ID's Has Snippet(s) Has Rules(s)
SMB / Named Pipes U9011
Right-to-Left Override (RLO) Extension Spoofing U1010
C2 via FTP(S) U0910
Code Cave U0502
Contributed Code Snippets
Technique Language Creation Date
SMB / Named Pipes Delphi 1 month
SMB / Named Pipes C# 1 month
Right-to-Left Override (RLO) Extension Spoofing PowerShell 1 month, 4 weeks
C2 via FTP(S) Delphi 3 months, 2 weeks
C2 via FTP(S) C# 3 months, 2 weeks
Shortcut Hiding Python 9 months, 3 weeks
APC injection Delphi 1 year
APC injection Delphi 1 year
Indicator Removal: Timestomp C# 1 year, 1 month
Process Hollowing, RunPE Delphi 1 year, 3 months
ProcEnvInjection - Remote code injection by abusing process environment strings Delphi 1 year, 3 months
Checking Mouse Activity Delphi 1 year, 3 months
DLL Injection via CreateRemoteThread and LoadLibrary Delphi 1 year, 3 months
NtQueryInformationProcess Delphi 1 year, 3 months
NtQueryInformationProcess C# 1 year, 3 months
File Melt C# 1 year, 3 months
Detecting Mac Address C# 1 year, 3 months
File Melt Delphi 2 years, 7 months
Detecting Active Services Delphi 2 years, 7 months
NTFS Files Attributes Delphi 2 years, 10 months
Code Cave Python 2 years, 10 months
NtQueryObject Delphi 2 years, 11 months
NtSetInformationThread Delphi 3 years
NtSetDebugFilterState Delphi 3 years
IsDebuggerPresent Delphi 3 years
OutputDebugString Delphi 3 years
SuspendThread Delphi 3 years
Detecting Window with FindWindow API Delphi 3 years
Detecting Window with FindWindow API Python 3 years
IsDebugged Flag Delphi 3 years, 1 month