Malware Analysis Report

2024-10-16 03:25

Sample ID 240812-jensxawamh
Target 8dde9b561ed4ac4e6786e22be7532ea2_JaffaCakes118
SHA256 d893f26330906bedcad2627f41135f0fda65bc4dfe1f4186cd60d4546469b3c3
Tags
egregor discovery
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

d893f26330906bedcad2627f41135f0fda65bc4dfe1f4186cd60d4546469b3c3

Threat Level: Known bad

The file 8dde9b561ed4ac4e6786e22be7532ea2_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

egregor discovery

Detected Egregor ransomware

Egregor family

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-12 07:35

Signatures

Detected Egregor ransomware

Description Indicator Process Target
N/A N/A N/A N/A

Egregor family

egregor

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-12 07:35

Reported

2024-08-12 07:37

Platform

win7-20240708-en

Max time kernel

119s

Max time network

120s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\8dde9b561ed4ac4e6786e22be7532ea2_JaffaCakes118.dll

Signatures

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2640 wrote to memory of 2080 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2640 wrote to memory of 2080 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2640 wrote to memory of 2080 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2640 wrote to memory of 2080 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2640 wrote to memory of 2080 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2640 wrote to memory of 2080 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2640 wrote to memory of 2080 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\8dde9b561ed4ac4e6786e22be7532ea2_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\8dde9b561ed4ac4e6786e22be7532ea2_JaffaCakes118.dll

Network

N/A

Files

memory/2080-6-0x0000000000360000-0x000000000039F000-memory.dmp

memory/2080-0-0x0000000000360000-0x000000000039F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-12 07:35

Reported

2024-08-12 07:37

Platform

win10v2004-20240802-en

Max time kernel

149s

Max time network

150s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\8dde9b561ed4ac4e6786e22be7532ea2_JaffaCakes118.dll

Signatures

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2280 wrote to memory of 4512 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2280 wrote to memory of 4512 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2280 wrote to memory of 4512 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\8dde9b561ed4ac4e6786e22be7532ea2_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\8dde9b561ed4ac4e6786e22be7532ea2_JaffaCakes118.dll

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 73.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp
US 8.8.8.8:53 udp

Files

memory/4512-0-0x00000000027E0000-0x000000000281F000-memory.dmp

memory/4512-6-0x00000000027E0000-0x000000000281F000-memory.dmp