Malware Analysis Report

2025-08-10 21:22

Sample ID 240527-nsw4nahh8x
Target 79077e6e03b53c5ea0e9d6afaecd3078_JaffaCakes118
SHA256 166ed64c4ea2357f1faaac126931dfb6b60dc3fcfdf8e5e71d6d2f2b1563828e
Tags
persistence
score
6/10

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
6/10

SHA256

166ed64c4ea2357f1faaac126931dfb6b60dc3fcfdf8e5e71d6d2f2b1563828e

Threat Level: Shows suspicious behavior

The file 79077e6e03b53c5ea0e9d6afaecd3078_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

persistence

Adds Run key to start application

Drops file in System32 directory

Program crash

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-27 11:40

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-27 11:40

Reported

2024-05-27 11:42

Platform

win7-20240221-en

Max time kernel

120s

Max time network

125s

Command Line

C:\Windows\Explorer.EXE

Signatures

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Runonce = "C:\\Windows\\system32\\runouce.exe" C:\Users\Admin\AppData\Local\Temp\79077e6e03b53c5ea0e9d6afaecd3078_JaffaCakes118.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\runouce.exe C:\Users\Admin\AppData\Local\Temp\79077e6e03b53c5ea0e9d6afaecd3078_JaffaCakes118.exe N/A
File opened for modification C:\Windows\SysWOW64\runouce.exe C:\Users\Admin\AppData\Local\Temp\79077e6e03b53c5ea0e9d6afaecd3078_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1640 wrote to memory of 2076 N/A C:\Users\Admin\AppData\Local\Temp\79077e6e03b53c5ea0e9d6afaecd3078_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\79077e6e03b53c5ea0e9d6afaecd3078_JaffaCakes118.exe
PID 1640 wrote to memory of 2076 N/A C:\Users\Admin\AppData\Local\Temp\79077e6e03b53c5ea0e9d6afaecd3078_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\79077e6e03b53c5ea0e9d6afaecd3078_JaffaCakes118.exe
PID 1640 wrote to memory of 2076 N/A C:\Users\Admin\AppData\Local\Temp\79077e6e03b53c5ea0e9d6afaecd3078_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\79077e6e03b53c5ea0e9d6afaecd3078_JaffaCakes118.exe
PID 1640 wrote to memory of 2076 N/A C:\Users\Admin\AppData\Local\Temp\79077e6e03b53c5ea0e9d6afaecd3078_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\79077e6e03b53c5ea0e9d6afaecd3078_JaffaCakes118.exe
PID 1640 wrote to memory of 2076 N/A C:\Users\Admin\AppData\Local\Temp\79077e6e03b53c5ea0e9d6afaecd3078_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\79077e6e03b53c5ea0e9d6afaecd3078_JaffaCakes118.exe
PID 1640 wrote to memory of 2076 N/A C:\Users\Admin\AppData\Local\Temp\79077e6e03b53c5ea0e9d6afaecd3078_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\79077e6e03b53c5ea0e9d6afaecd3078_JaffaCakes118.exe
PID 1640 wrote to memory of 2076 N/A C:\Users\Admin\AppData\Local\Temp\79077e6e03b53c5ea0e9d6afaecd3078_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\79077e6e03b53c5ea0e9d6afaecd3078_JaffaCakes118.exe
PID 1640 wrote to memory of 1200 N/A C:\Users\Admin\AppData\Local\Temp\79077e6e03b53c5ea0e9d6afaecd3078_JaffaCakes118.exe C:\Windows\Explorer.EXE
PID 1640 wrote to memory of 1200 N/A C:\Users\Admin\AppData\Local\Temp\79077e6e03b53c5ea0e9d6afaecd3078_JaffaCakes118.exe C:\Windows\Explorer.EXE

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\79077e6e03b53c5ea0e9d6afaecd3078_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\79077e6e03b53c5ea0e9d6afaecd3078_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\79077e6e03b53c5ea0e9d6afaecd3078_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\79077e6e03b53c5ea0e9d6afaecd3078_JaffaCakes118.exe"

Network

N/A

Files

memory/1640-0-0x0000000000400000-0x000000000043D000-memory.dmp

memory/2076-1-0x0000000000400000-0x000000000043D000-memory.dmp

memory/1200-4-0x0000000001DB0000-0x0000000001DB1000-memory.dmp

memory/1200-3-0x0000000001DB0000-0x0000000001DB1000-memory.dmp

memory/1640-5-0x0000000000400000-0x000000000043D000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-27 11:40

Reported

2024-05-27 11:42

Platform

win10v2004-20240226-en

Max time kernel

143s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\79077e6e03b53c5ea0e9d6afaecd3078_JaffaCakes118.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\79077e6e03b53c5ea0e9d6afaecd3078_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\79077e6e03b53c5ea0e9d6afaecd3078_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 636 -ip 636

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 636 -s 484

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 636 -ip 636

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 636 -s 492

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 --mojo-platform-channel-handle=3704 --field-trial-handle=2252,i,16022092570067181109,3235558581947505669,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 73.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 1.173.189.20.in-addr.arpa udp

Files

memory/636-0-0x0000000000400000-0x000000000043D000-memory.dmp

memory/636-1-0x0000000000400000-0x000000000043D000-memory.dmp