Malware Analysis Report

2025-08-11 07:36

Sample ID 241015-2dta4svcpp
Target 4a4c2fafad27cbf16044476d97435107_JaffaCakes118
SHA256 afcf1be0211a4861e3d623909d938bad4661dd5ae42e7949af63249709a388ea
Tags
bootkit discovery persistence
score
7/10

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
7/10

SHA256

afcf1be0211a4861e3d623909d938bad4661dd5ae42e7949af63249709a388ea

Threat Level: Shows suspicious behavior

The file 4a4c2fafad27cbf16044476d97435107_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

bootkit discovery persistence

Checks computer location settings

Writes to the Master Boot Record (MBR)

Unsigned PE

System Location Discovery: System Language Discovery

Enumerates physical storage devices

Modifies registry class

Suspicious behavior: AddClipboardFormatListener

Suspicious use of SetWindowsHookEx

Checks processor information in registry

Modifies Internet Explorer settings

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-15 22:28

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-15 22:28

Reported

2024-10-15 22:30

Platform

win7-20240729-en

Max time kernel

140s

Max time network

17s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4a4c2fafad27cbf16044476d97435107_JaffaCakes118.exe"

Signatures

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PhysicalDrive0 C:\Users\Admin\AppData\Local\Temp\4a4c2fafad27cbf16044476d97435107_JaffaCakes118.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\4a4c2fafad27cbf16044476d97435107_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\explorer.exe N/A

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Windows\explorer.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Windows\explorer.exe N/A

Modifies Internet Explorer settings

adware spyware
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\Toolbar C:\Windows\explorer.exe N/A
Set value (int) \REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\Toolbar\Locked = "1" C:\Windows\explorer.exe N/A

Modifies registry class

Description Indicator Process Target
Set value (data) \REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots C:\Windows\explorer.exe N/A
Set value (data) \REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff C:\Windows\explorer.exe N/A
Key created \REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_Classes\Local Settings C:\Windows\explorer.exe N/A
Key created \REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell C:\Windows\explorer.exe N/A
Key created \REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU C:\Windows\explorer.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\4a4c2fafad27cbf16044476d97435107_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\4a4c2fafad27cbf16044476d97435107_JaffaCakes118.exe"

C:\Windows\SysWOW64\explorer.exe

"C:\Windows\System32\explorer.exe" ::{20D04FE0-3AEA-1069-A2D8-08002B30309D}

C:\Windows\explorer.exe

C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding

Network

N/A

Files

memory/1172-0-0x0000000000230000-0x0000000000231000-memory.dmp

memory/2104-1-0x0000000003BA0000-0x0000000003BB0000-memory.dmp

memory/1172-2-0x0000000000400000-0x0000000000470000-memory.dmp

memory/1172-3-0x0000000000400000-0x0000000000470000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-15 22:28

Reported

2024-10-15 22:30

Platform

win10v2004-20241007-en

Max time kernel

142s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4a4c2fafad27cbf16044476d97435107_JaffaCakes118.exe"

Signatures

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\4a4c2fafad27cbf16044476d97435107_JaffaCakes118.exe N/A

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PhysicalDrive0 C:\Users\Admin\AppData\Local\Temp\4a4c2fafad27cbf16044476d97435107_JaffaCakes118.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\4a4c2fafad27cbf16044476d97435107_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\explorer.exe N/A

Modifies Internet Explorer settings

adware spyware
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\Toolbar C:\Windows\explorer.exe N/A
Set value (int) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\Locked = "1" C:\Windows\explorer.exe N/A
Key created \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\ShellBrowser C:\Windows\explorer.exe N/A
Set value (data) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\ShellBrowser\ITBar7Layout = 13000000000000000000000020000000100000000000000001000000010700005e01000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 C:\Windows\explorer.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ C:\Windows\explorer.exe N/A
Key created \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000_Classes\Local Settings C:\Windows\explorer.exe N/A
Key created \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell C:\Windows\explorer.exe N/A
Key created \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU C:\Windows\explorer.exe N/A
Set value (data) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots C:\Windows\explorer.exe N/A
Set value (data) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff C:\Windows\explorer.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\ C:\Windows\explorer.exe N/A

Suspicious behavior: AddClipboardFormatListener

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

Suspicious use of SetWindowsHookEx

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

Processes

C:\Users\Admin\AppData\Local\Temp\4a4c2fafad27cbf16044476d97435107_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\4a4c2fafad27cbf16044476d97435107_JaffaCakes118.exe"

C:\Windows\SysWOW64\explorer.exe

"C:\Windows\System32\explorer.exe" ::{20D04FE0-3AEA-1069-A2D8-08002B30309D}

C:\Windows\explorer.exe

C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding

Network

Country Destination Domain Proto
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 73.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.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

Files

memory/3024-0-0x00000000022F0000-0x00000000022F1000-memory.dmp

memory/3024-1-0x0000000000400000-0x0000000000470000-memory.dmp

memory/3024-2-0x00000000022F0000-0x00000000022F1000-memory.dmp

memory/3024-3-0x0000000000400000-0x0000000000470000-memory.dmp