Malware Analysis Report

2024-10-16 03:25

Sample ID 201104-621jq577ga
Target t11.zip
SHA256 61b8878801a2967f58f306223b60ab54575a879bf07884f806501b4d01e9106a
Tags
egregor ransomware
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral4

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

61b8878801a2967f58f306223b60ab54575a879bf07884f806501b4d01e9106a

Threat Level: Known bad

The file t11.zip was found to be: Known bad.

Malicious Activity Summary

egregor ransomware

Egregor Ransomware

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2020-11-04 21:59

Signatures

N/A

Analysis: behavioral3

Detonation Overview

Submitted

2020-11-04 21:59

Reported

2020-11-04 22:02

Platform

win7v20201028

Max time kernel

30s

Max time network

29s

Command Line

cmd /c "C:\Users\Admin\AppData\Local\Temp\spr3.bat"

Signatures

Egregor Ransomware

ransomware egregor

Processes

C:\Windows\system32\cmd.exe

cmd /c "C:\Users\Admin\AppData\Local\Temp\spr3.bat"

C:\Windows\system32\rundll32.exe

rundll32.exe "C:\Users\Admin\AppData\Local\Temp\b.dll",DllRegisterServer --passegregor9 --append="antani" --multiproc

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe "C:\Users\Admin\AppData\Local\Temp\b.dll",DllRegisterServer --passegregor9 --append="antani" --multiproc

Network

N/A

Files

memory/1444-0-0x0000000000000000-mapping.dmp

memory/1992-1-0x0000000000000000-mapping.dmp

memory/1992-2-0x00000000001A0000-0x00000000001DF000-memory.dmp

Analysis: behavioral4

Detonation Overview

Submitted

2020-11-04 21:59

Reported

2020-11-04 22:02

Platform

win10v20201028

Max time kernel

12s

Max time network

110s

Command Line

C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\spr3.bat"

Signatures

Egregor Ransomware

ransomware egregor

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 428 wrote to memory of 2788 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\rundll32.exe
PID 428 wrote to memory of 2788 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\rundll32.exe
PID 2788 wrote to memory of 3228 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2788 wrote to memory of 3228 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2788 wrote to memory of 3228 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\cmd.exe

C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\spr3.bat"

C:\Windows\system32\rundll32.exe

rundll32.exe "C:\Users\Admin\AppData\Local\Temp\b.dll",DllRegisterServer --passegregor9 --append="antani" --multiproc

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe "C:\Users\Admin\AppData\Local\Temp\b.dll",DllRegisterServer --passegregor9 --append="antani" --multiproc

Network

N/A

Files

memory/2788-0-0x0000000000000000-mapping.dmp

memory/3228-1-0x0000000000000000-mapping.dmp

memory/3228-2-0x0000000004610000-0x000000000464F000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2020-11-04 21:59

Reported

2020-11-04 22:02

Platform

win7v20201028

Max time kernel

135s

Max time network

136s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\b.dll

Signatures

Egregor Ransomware

ransomware egregor

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1080 wrote to memory of 1228 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1080 wrote to memory of 1228 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1080 wrote to memory of 1228 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1080 wrote to memory of 1228 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1080 wrote to memory of 1228 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1080 wrote to memory of 1228 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1080 wrote to memory of 1228 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe

Processes

C:\Windows\system32\regsvr32.exe

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\b.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\b.dll

Network

N/A

Files

memory/1228-0-0x0000000000000000-mapping.dmp

memory/1228-1-0x00000000005D0000-0x000000000060F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2020-11-04 21:59

Reported

2020-11-04 22:02

Platform

win10v20201028

Max time kernel

13s

Max time network

110s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\b.dll

Signatures

Egregor Ransomware

ransomware egregor

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2724 wrote to memory of 1800 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2724 wrote to memory of 1800 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2724 wrote to memory of 1800 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe

Processes

C:\Windows\system32\regsvr32.exe

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\b.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\b.dll

Network

N/A

Files

memory/1800-0-0x0000000000000000-mapping.dmp

memory/1800-1-0x0000000001110000-0x000000000114F000-memory.dmp