Malware Analysis Report

2024-10-16 03:25

Sample ID 201104-g2waqjbd5x
Target t9.zip
SHA256 14529f9e8a7004dbb7c1a4518ea82f61183e0fbe41ff389addb48eb1e8673828
Tags
egregor ransomware
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral4

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

14529f9e8a7004dbb7c1a4518ea82f61183e0fbe41ff389addb48eb1e8673828

Threat Level: Known bad

The file t9.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 21:23

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2020-11-04 21:23

Reported

2020-11-04 21:25

Platform

win7v20201028

Max time kernel

136s

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 1880 wrote to memory of 1216 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1880 wrote to memory of 1216 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1880 wrote to memory of 1216 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1880 wrote to memory of 1216 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1880 wrote to memory of 1216 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1880 wrote to memory of 1216 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1880 wrote to memory of 1216 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/1216-0-0x0000000000000000-mapping.dmp

memory/1216-1-0x00000000004F0000-0x000000000052F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2020-11-04 21:23

Reported

2020-11-04 21:25

Platform

win10v20201028

Max time kernel

12s

Max time network

115s

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 3980 wrote to memory of 396 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 3980 wrote to memory of 396 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 3980 wrote to memory of 396 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

Country Destination Domain Proto
N/A 52.109.12.18:443 tcp

Files

memory/396-0-0x0000000000000000-mapping.dmp

memory/396-1-0x0000000000E10000-0x0000000000E4F000-memory.dmp

Analysis: behavioral3

Detonation Overview

Submitted

2020-11-04 21:23

Reported

2020-11-04 21:25

Platform

win7v20201028

Max time kernel

3s

Max time network

10s

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 --Password10Char --append="antani" --multiproc

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe "C:\Users\Admin\AppData\Local\Temp\b.dll",DllRegisterServer --Password10Char --append="antani" --multiproc

Network

N/A

Files

memory/1172-0-0x0000000000000000-mapping.dmp

memory/2024-1-0x0000000000000000-mapping.dmp

memory/2024-2-0x00000000006D0000-0x000000000070F000-memory.dmp

Analysis: behavioral4

Detonation Overview

Submitted

2020-11-04 21:23

Reported

2020-11-04 21:25

Platform

win10v20201028

Max time kernel

15s

Max time network

67s

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 884 wrote to memory of 3932 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\rundll32.exe
PID 884 wrote to memory of 3932 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\rundll32.exe
PID 3932 wrote to memory of 3888 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3932 wrote to memory of 3888 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3932 wrote to memory of 3888 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 --Password10Char --append="antani" --multiproc

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe "C:\Users\Admin\AppData\Local\Temp\b.dll",DllRegisterServer --Password10Char --append="antani" --multiproc

Network

N/A

Files

memory/3932-0-0x0000000000000000-mapping.dmp

memory/3888-1-0x0000000000000000-mapping.dmp

memory/3888-2-0x0000000002F50000-0x0000000002F8F000-memory.dmp