Malware Analysis Report

2024-10-16 03:25

Sample ID 201104-1bk455jgq6
Target t2.bat.zip
SHA256 19ffefca0054a6fccff7721f57e711e881a3ecfde650a7258cf89b5f3c5e95af
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 Overview

score
10/10

SHA256

19ffefca0054a6fccff7721f57e711e881a3ecfde650a7258cf89b5f3c5e95af

Threat Level: Known bad

The file t2.bat.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 18:12

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2020-11-04 18:12

Reported

2020-11-04 18:43

Platform

win7v20201028

Max time kernel

1579s

Max time network

1578s

Command Line

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

Signatures

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1912 wrote to memory of 604 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\rundll32.exe
PID 1912 wrote to memory of 604 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\rundll32.exe
PID 1912 wrote to memory of 604 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\rundll32.exe

Processes

C:\Windows\system32\cmd.exe

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

C:\Windows\system32\rundll32.exe

rundll32.exe "\\SRV01QW\sp\b.dll",DllRegisterServer --append="carraro" --multiproc

Network

Country Destination Domain Proto
N/A 10.7.0.93:5355 udp
N/A 10.7.0.66:5355 udp
N/A 10.7.0.74:5355 udp
N/A 10.7.0.78:5355 udp
N/A 10.7.0.85:5355 udp
N/A 10.7.0.64:5355 udp
N/A 10.7.0.87:5355 udp
N/A 10.7.0.84:5355 udp
N/A 10.7.0.71:5355 udp
N/A 10.7.0.69:5355 udp
N/A 10.7.0.86:5355 udp
N/A 10.7.0.87:5355 udp
N/A 10.7.0.64:5355 udp
N/A 10.7.0.79:5355 udp

Files

memory/604-0-0x0000000000000000-mapping.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2020-11-04 18:12

Reported

2020-11-04 18:43

Platform

win7v20201028

Max time kernel

1743s

Max time network

1744s

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 1632 wrote to memory of 1172 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1632 wrote to memory of 1172 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1632 wrote to memory of 1172 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1632 wrote to memory of 1172 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1632 wrote to memory of 1172 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1632 wrote to memory of 1172 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1632 wrote to memory of 1172 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/1172-0-0x0000000000000000-mapping.dmp

memory/1172-1-0x00000000002D0000-0x000000000030F000-memory.dmp