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)
Right-to-Left Override (RLO) Extension Spoofing U1010
FuncIn U0132 U0221 U0308
SMB / Named Pipes U9011
C2 via FTP(S) U0910
Code Cave U0502
Contributed Code Snippets
Technique Language Creation Date
Reflective DLL injection Delphi 4 months, 4 weeks
SMB / Named Pipes Delphi 7 months, 3 weeks
SMB / Named Pipes C# 7 months, 3 weeks
Right-to-Left Override (RLO) Extension Spoofing PowerShell 8 months, 2 weeks
C2 via FTP(S) Delphi 10 months
C2 via FTP(S) C# 10 months, 1 week
Shortcut Hiding Python 1 year, 4 months
APC injection Delphi 1 year, 7 months
APC injection Delphi 1 year, 7 months
Indicator Removal: Timestomp C# 1 year, 8 months
Process Hollowing, RunPE Delphi 1 year, 9 months
ProcEnvInjection - Remote code injection by abusing process environment strings Delphi 1 year, 10 months
DLL Injection via CreateRemoteThread and LoadLibrary Delphi 1 year, 10 months
Checking Mouse Activity Delphi 1 year, 10 months
Detecting Mac Address C# 1 year, 10 months
NtQueryInformationProcess Delphi 1 year, 10 months
NtQueryInformationProcess C# 1 year, 10 months
File Melt C# 1 year, 10 months
File Melt Delphi 3 years, 1 month
Detecting Active Services Delphi 3 years, 2 months
NTFS Files Attributes Delphi 3 years, 4 months
Code Cave Python 3 years, 5 months
NtQueryObject Delphi 3 years, 6 months
NtSetInformationThread Delphi 3 years, 6 months
IsDebuggerPresent Delphi 3 years, 7 months
NtSetDebugFilterState Delphi 3 years, 7 months
OutputDebugString Delphi 3 years, 7 months
SuspendThread Delphi 3 years, 7 months
Detecting Window with FindWindow API Delphi 3 years, 7 months
Detecting Window with FindWindow API Python 3 years, 7 months
IsDebugged Flag Delphi 3 years, 8 months