Malware Analysis Report

2025-03-15 06:03

Sample ID 240510-3v9vvsbg62
Target 31acaab0dc1ff13752b6692e006a0849_JaffaCakes118
SHA256 7b9234facc1db74bf568ff74e86c888c0dd10915d99b621e6a902b5bbaa5d1c2
Tags
vmprotect
score
7/10

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
7/10

SHA256

7b9234facc1db74bf568ff74e86c888c0dd10915d99b621e6a902b5bbaa5d1c2

Threat Level: Shows suspicious behavior

The file 31acaab0dc1ff13752b6692e006a0849_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

vmprotect

VMProtect packed file

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-05-10 23:51

Signatures

VMProtect packed file

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-10 23:51

Reported

2024-05-10 23:55

Platform

win7-20240508-en

Max time kernel

120s

Max time network

121s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\31acaab0dc1ff13752b6692e006a0849_JaffaCakes118.dll,#1

Signatures

VMProtect packed file

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

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2108 wrote to memory of 2096 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2108 wrote to memory of 2096 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2108 wrote to memory of 2096 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2108 wrote to memory of 2096 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2108 wrote to memory of 2096 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2108 wrote to memory of 2096 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2108 wrote to memory of 2096 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\31acaab0dc1ff13752b6692e006a0849_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\31acaab0dc1ff13752b6692e006a0849_JaffaCakes118.dll,#1

Network

N/A

Files

memory/2096-2-0x0000000000170000-0x0000000000171000-memory.dmp

memory/2096-0-0x0000000000170000-0x0000000000171000-memory.dmp

memory/2096-4-0x0000000000170000-0x0000000000171000-memory.dmp

memory/2096-5-0x0000000073C30000-0x000000007409A000-memory.dmp

memory/2096-6-0x0000000073E1C000-0x0000000073FFD000-memory.dmp

memory/2096-7-0x0000000073C30000-0x000000007409A000-memory.dmp

memory/2096-8-0x0000000073C30000-0x000000007409A000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-10 23:51

Reported

2024-05-10 23:55

Platform

win10v2004-20240508-en

Max time kernel

125s

Max time network

128s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\31acaab0dc1ff13752b6692e006a0849_JaffaCakes118.dll,#1

Signatures

VMProtect packed file

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

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3008 wrote to memory of 3088 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3008 wrote to memory of 3088 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3008 wrote to memory of 3088 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\31acaab0dc1ff13752b6692e006a0849_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\31acaab0dc1ff13752b6692e006a0849_JaffaCakes118.dll,#1

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=3244,i,17096020621006928097,15544233752327415349,262144 --variations-seed-version --mojo-platform-channel-handle=4360 /prefetch:8

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 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
NL 23.62.61.194:443 www.bing.com tcp
NL 23.62.61.194:443 www.bing.com tcp
US 8.8.8.8:53 194.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 79.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 31.121.18.2.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp

Files

memory/3088-1-0x0000000074A40000-0x0000000074EAA000-memory.dmp

memory/3088-0-0x0000000000C70000-0x0000000000C71000-memory.dmp

memory/3088-2-0x0000000074C2C000-0x0000000074E0D000-memory.dmp

memory/3088-3-0x0000000074A40000-0x0000000074EAA000-memory.dmp