Malware Analysis Report

2025-01-18 21:46

Sample ID 240414-z4t9zsdg57
Target ef871484b732d48892906e83df50bbe7_JaffaCakes118
SHA256 f00675143092001126ddd1dafffd8a9e380486fb76eea79be6c60a2ee2c18f73
Tags
adware evasion stealer
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

f00675143092001126ddd1dafffd8a9e380486fb76eea79be6c60a2ee2c18f73

Threat Level: Known bad

The file ef871484b732d48892906e83df50bbe7_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

adware evasion stealer

Modifies firewall policy service

Installs/modifies Browser Helper Object

Drops file in System32 directory

Suspicious use of SetThreadContext

Unsigned PE

Modifies Internet Explorer settings

Modifies registry class

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-14 21:16

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-14 21:16

Reported

2024-04-14 21:19

Platform

win7-20240221-en

Max time kernel

120s

Max time network

125s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ef871484b732d48892906e83df50bbe7_JaffaCakes118.exe"

Signatures

Modifies firewall policy service

evasion
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List C:\Users\Admin\AppData\Local\Temp\ef871484b732d48892906e83df50bbe7_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Program Files\Internet Explorer\IEXPLORE.EXE = "C:\\Program Files\\Internet Explorer\\IEXPLORE.EXE:*:Enabled:Internet Explorer" C:\Users\Admin\AppData\Local\Temp\ef871484b732d48892906e83df50bbe7_JaffaCakes118.exe N/A

Installs/modifies Browser Helper Object

stealer adware
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Explorer\browser helper objects\{36DBC179-A19F-48F2-B16A-6A3E19B42A87} C:\Users\Admin\AppData\Local\Temp\ef871484b732d48892906e83df50bbe7_JaffaCakes118.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\ipv6monl.dll C:\Users\Admin\AppData\Local\Temp\ef871484b732d48892906e83df50bbe7_JaffaCakes118.exe N/A
File opened for modification C:\Windows\SysWOW64\ipv6monl.dll C:\Users\Admin\AppData\Local\Temp\ef871484b732d48892906e83df50bbe7_JaffaCakes118.exe N/A

Modifies Internet Explorer settings

adware spyware
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Internet Explorer\Main\Enable Browser Extensions = "yes" C:\Users\Admin\AppData\Local\Temp\ef871484b732d48892906e83df50bbe7_JaffaCakes118.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{36DBC179-A19F-48F2-B16A-6A3E19B42A87} C:\Users\Admin\AppData\Local\Temp\ef871484b732d48892906e83df50bbe7_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{36DBC179-A19F-48F2-B16A-6A3E19B42A87} C:\Users\Admin\AppData\Local\Temp\ef871484b732d48892906e83df50bbe7_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{36DBC179-A19F-48F2-B16A-6A3E19B42A87}\InprocServer32 C:\Users\Admin\AppData\Local\Temp\ef871484b732d48892906e83df50bbe7_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{36DBC179-A19F-48F2-B16A-6A3E19B42A87}\InprocServer32\ = "C:\\Windows\\SysWow64\\ipv6monl.dll" C:\Users\Admin\AppData\Local\Temp\ef871484b732d48892906e83df50bbe7_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{36DBC179-A19F-48F2-B16A-6A3E19B42A87}\InprocServer32\ThreadingModel = "apartment" C:\Users\Admin\AppData\Local\Temp\ef871484b732d48892906e83df50bbe7_JaffaCakes118.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ef871484b732d48892906e83df50bbe7_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\ef871484b732d48892906e83df50bbe7_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\ef871484b732d48892906e83df50bbe7_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\ef871484b732d48892906e83df50bbe7_JaffaCakes118.exe

C:\Users\Admin\AppData\Local\Temp\ef871484b732d48892906e83df50bbe7_JaffaCakes118.exe

Network

N/A

Files

memory/2348-0-0x0000000000400000-0x0000000000419000-memory.dmp

memory/2348-1-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2348-3-0x0000000000400000-0x0000000000419000-memory.dmp

memory/1612-4-0x0000000013140000-0x0000000013161000-memory.dmp

memory/2348-6-0x0000000000400000-0x0000000000419000-memory.dmp

memory/2348-7-0x0000000000400000-0x0000000000419000-memory.dmp

memory/2348-10-0x0000000000400000-0x0000000000419000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-14 21:16

Reported

2024-04-14 21:19

Platform

win10v2004-20240226-en

Max time kernel

145s

Max time network

157s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ef871484b732d48892906e83df50bbe7_JaffaCakes118.exe"

Signatures

Modifies firewall policy service

evasion
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List C:\Users\Admin\AppData\Local\Temp\ef871484b732d48892906e83df50bbe7_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile C:\Users\Admin\AppData\Local\Temp\ef871484b732d48892906e83df50bbe7_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications C:\Users\Admin\AppData\Local\Temp\ef871484b732d48892906e83df50bbe7_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Program Files\Internet Explorer\IEXPLORE.EXE = "C:\\Program Files\\Internet Explorer\\IEXPLORE.EXE:*:Enabled:Internet Explorer" C:\Users\Admin\AppData\Local\Temp\ef871484b732d48892906e83df50bbe7_JaffaCakes118.exe N/A

Installs/modifies Browser Helper Object

stealer adware
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\browser helper objects\{36DBC179-A19F-48F2-B16A-6A3E19B42A87} C:\Users\Admin\AppData\Local\Temp\ef871484b732d48892906e83df50bbe7_JaffaCakes118.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\ipv6monl.dll C:\Users\Admin\AppData\Local\Temp\ef871484b732d48892906e83df50bbe7_JaffaCakes118.exe N/A
File opened for modification C:\Windows\SysWOW64\ipv6monl.dll C:\Users\Admin\AppData\Local\Temp\ef871484b732d48892906e83df50bbe7_JaffaCakes118.exe N/A

Modifies Internet Explorer settings

adware spyware
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Enable Browser Extensions = "yes" C:\Users\Admin\AppData\Local\Temp\ef871484b732d48892906e83df50bbe7_JaffaCakes118.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{36DBC179-A19F-48F2-B16A-6A3E19B42A87} C:\Users\Admin\AppData\Local\Temp\ef871484b732d48892906e83df50bbe7_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{36DBC179-A19F-48F2-B16A-6A3E19B42A87} C:\Users\Admin\AppData\Local\Temp\ef871484b732d48892906e83df50bbe7_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{36DBC179-A19F-48F2-B16A-6A3E19B42A87}\InprocServer32 C:\Users\Admin\AppData\Local\Temp\ef871484b732d48892906e83df50bbe7_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{36DBC179-A19F-48F2-B16A-6A3E19B42A87}\InprocServer32\ = "C:\\Windows\\SysWow64\\ipv6monl.dll" C:\Users\Admin\AppData\Local\Temp\ef871484b732d48892906e83df50bbe7_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{36DBC179-A19F-48F2-B16A-6A3E19B42A87}\InprocServer32\ThreadingModel = "apartment" C:\Users\Admin\AppData\Local\Temp\ef871484b732d48892906e83df50bbe7_JaffaCakes118.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ef871484b732d48892906e83df50bbe7_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\ef871484b732d48892906e83df50bbe7_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\ef871484b732d48892906e83df50bbe7_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\ef871484b732d48892906e83df50bbe7_JaffaCakes118.exe

C:\Users\Admin\AppData\Local\Temp\ef871484b732d48892906e83df50bbe7_JaffaCakes118.exe

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=1424 --field-trial-handle=2180,i,12780723798465539942,12010519452607841069,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 67.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
GB 142.250.187.234:443 chromewebstore.googleapis.com tcp
US 8.8.8.8:53 234.187.250.142.in-addr.arpa udp
US 8.8.8.8:53 23.173.189.20.in-addr.arpa udp

Files

memory/2296-0-0x0000000000400000-0x0000000000419000-memory.dmp

memory/1072-1-0x0000000013140000-0x0000000013161000-memory.dmp

memory/2296-3-0x0000000000400000-0x0000000000419000-memory.dmp

memory/2296-4-0x0000000000400000-0x0000000000419000-memory.dmp

memory/2296-7-0x0000000000400000-0x0000000000419000-memory.dmp