Malware Analysis Report

2025-03-15 06:32

Sample ID 240624-wfe9dayakk
Target 09f4bf7023d6b3a21cfb94d73ccc710b_JaffaCakes118
SHA256 2d713fa109dd7751b29a8e74e73b37c8dda5b1965cc6606dfc4be77d71366ba4
Tags
gh0strat bootkit persistence rat
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

2d713fa109dd7751b29a8e74e73b37c8dda5b1965cc6606dfc4be77d71366ba4

Threat Level: Known bad

The file 09f4bf7023d6b3a21cfb94d73ccc710b_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

gh0strat bootkit persistence rat

Gh0st RAT payload

Gh0strat

Sets service image path in registry

Server Software Component: Terminal Services DLL

Loads dropped DLL

Deletes itself

Writes to the Master Boot Record (MBR)

Drops file in System32 directory

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Modifies data under HKEY_USERS

Suspicious behavior: EnumeratesProcesses

Checks processor information in registry

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-24 17:51

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-24 17:51

Reported

2024-06-24 17:54

Platform

win7-20240221-en

Max time kernel

144s

Max time network

144s

Command Line

"C:\Users\Admin\AppData\Local\Temp\09f4bf7023d6b3a21cfb94d73ccc710b_JaffaCakes118.exe"

Signatures

Gh0st RAT payload

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
N/A N/A N/A N/A
N/A N/A N/A N/A

Gh0strat

rat gh0strat

Server Software Component: Terminal Services DLL

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\fastuserswitchingcompatibility\Parameters\ServiceDll = "C:\\Windows\\system32\\udnyl.dll" C:\Users\Admin\AppData\Local\Temp\09f4bf7023d6b3a21cfb94d73ccc710b_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\fastuserswitchingcompatibility\Parameters\ServiceDll = "C:\\Windows\\system32\\udnyl.dll" C:\Windows\SysWOW64\svchost.exe N/A

Sets service image path in registry

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\fastuserswitchingcompatibility\ImagePath = "%SystemRoot%\\System32\\svchost.exe -k netsvcs" C:\Windows\SysWOW64\svchost.exe N/A

Deletes itself

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

Loads dropped DLL

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

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PhysicalDrive0 C:\Windows\SysWOW64\svchost.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\d2f5ca0e.del C:\Users\Admin\AppData\Local\Temp\09f4bf7023d6b3a21cfb94d73ccc710b_JaffaCakes118.exe N/A
File opened for modification C:\Windows\SysWOW64\udnyl.dll C:\Users\Admin\AppData\Local\Temp\09f4bf7023d6b3a21cfb94d73ccc710b_JaffaCakes118.exe N/A

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Windows\SysWOW64\svchost.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz C:\Windows\SysWOW64\svchost.exe N/A

Modifies data under HKEY_USERS

Description Indicator Process Target
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum C:\Windows\SysWOW64\svchost.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software C:\Windows\SysWOW64\svchost.exe N/A
Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft C:\Windows\SysWOW64\svchost.exe N/A
Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\ActiveMovie C:\Windows\SysWOW64\svchost.exe N/A
Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\ActiveMovie\devenum C:\Windows\SysWOW64\svchost.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\ActiveMovie\devenum\Version = "7" C:\Windows\SysWOW64\svchost.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeBackupPrivilege N/A C:\Windows\SysWOW64\svchost.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\SysWOW64\svchost.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\SysWOW64\svchost.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\SysWOW64\svchost.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\SysWOW64\svchost.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\SysWOW64\svchost.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\SysWOW64\svchost.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\09f4bf7023d6b3a21cfb94d73ccc710b_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\09f4bf7023d6b3a21cfb94d73ccc710b_JaffaCakes118.exe"

C:\Windows\SysWOW64\svchost.exe

C:\Windows\SysWOW64\svchost.exe -k netsvcs

Network

Country Destination Domain Proto
US 8.8.8.8:53 bj2010.2288.org udp
US 8.8.8.8:53 www.baidu.com udp
US 8.8.8.8:53 www.baidu.com udp
US 8.8.8.8:53 www.baidu.com udp
US 8.8.8.8:53 www.baidu.com udp
US 8.8.8.8:53 www.baidu.com udp

Files

memory/2008-0-0x0000000000400000-0x0000000000431000-memory.dmp

memory/2008-2-0x00000000003A0000-0x00000000003D1000-memory.dmp

memory/2008-1-0x00000000003A0000-0x00000000003D1000-memory.dmp

\??\c:\windows\SysWOW64\udnyl.dll

MD5 c885fd8e84de53a8e00acc0cb79ead31
SHA1 d5395948cff06db673038438409020dbbe0f9c31
SHA256 c393648bdf6577fae59e80517602bae185faa56cd8d653e447769644ec00db67
SHA512 b3ac4f3ac38f051caa8bd9702fc32e98154e4b831d379b644be16fe80f9a898910a04a7e45ee483c74717fa8e58378d091cfe79a58dbb34973a9b211934a8fd8

memory/2812-7-0x0000000010000000-0x0000000010027000-memory.dmp

memory/2008-8-0x0000000000400000-0x0000000000431000-memory.dmp

memory/2812-9-0x0000000010000000-0x0000000010027000-memory.dmp

memory/2812-10-0x0000000010000000-0x0000000010027000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-24 17:51

Reported

2024-06-24 17:54

Platform

win10v2004-20240508-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\09f4bf7023d6b3a21cfb94d73ccc710b_JaffaCakes118.exe"

Signatures

Gh0st RAT payload

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
N/A N/A N/A N/A
N/A N/A N/A N/A

Gh0strat

rat gh0strat

Server Software Component: Terminal Services DLL

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\fastuserswitchingcompatibility\Parameters\ServiceDll = "C:\\Windows\\system32\\bfufw.dll" C:\Users\Admin\AppData\Local\Temp\09f4bf7023d6b3a21cfb94d73ccc710b_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\fastuserswitchingcompatibility\Parameters\ServiceDll = "C:\\Windows\\system32\\bfufw.dll" C:\Windows\SysWOW64\svchost.exe N/A

Sets service image path in registry

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\fastuserswitchingcompatibility\ImagePath = "%SystemRoot%\\System32\\svchost.exe -k netsvcs" C:\Windows\SysWOW64\svchost.exe N/A

Deletes itself

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

Loads dropped DLL

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

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PhysicalDrive0 C:\Windows\SysWOW64\svchost.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\d2f5ca0e.del C:\Users\Admin\AppData\Local\Temp\09f4bf7023d6b3a21cfb94d73ccc710b_JaffaCakes118.exe N/A
File opened for modification C:\Windows\SysWOW64\bfufw.dll C:\Users\Admin\AppData\Local\Temp\09f4bf7023d6b3a21cfb94d73ccc710b_JaffaCakes118.exe N/A

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Windows\SysWOW64\svchost.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz C:\Windows\SysWOW64\svchost.exe N/A

Modifies data under HKEY_USERS

Description Indicator Process Target
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum\Version = "7" C:\Windows\SysWOW64\svchost.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum C:\Windows\SysWOW64\svchost.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software C:\Windows\SysWOW64\svchost.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft C:\Windows\SysWOW64\svchost.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie C:\Windows\SysWOW64\svchost.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\09f4bf7023d6b3a21cfb94d73ccc710b_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\09f4bf7023d6b3a21cfb94d73ccc710b_JaffaCakes118.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeBackupPrivilege N/A C:\Windows\SysWOW64\svchost.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\SysWOW64\svchost.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\SysWOW64\svchost.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\SysWOW64\svchost.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\SysWOW64\svchost.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\SysWOW64\svchost.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\SysWOW64\svchost.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\09f4bf7023d6b3a21cfb94d73ccc710b_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\09f4bf7023d6b3a21cfb94d73ccc710b_JaffaCakes118.exe"

C:\Windows\SysWOW64\svchost.exe

C:\Windows\SysWOW64\svchost.exe -k netsvcs -s fastuserswitchingcompatibility

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=4572,i,1697479186275492802,18058102846092193784,262144 --variations-seed-version --mojo-platform-channel-handle=4168 /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 97.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 69.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 bj2010.2288.org udp
US 8.8.8.8:53 www.baidu.com udp
US 8.8.8.8:53 bj2010.2288.org udp
US 8.8.8.8:53 bj2010.2288.org udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 bj2010.2288.org udp
US 8.8.8.8:53 www.baidu.com udp
US 8.8.8.8:53 107.12.20.2.in-addr.arpa udp
US 8.8.8.8:53 bj2010.2288.org udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 bj2010.2288.org udp
US 8.8.8.8:53 www.baidu.com udp
US 8.8.8.8:53 80.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 bj2010.2288.org udp
US 8.8.8.8:53 bj2010.2288.org udp
US 8.8.8.8:53 bj2010.2288.org udp
US 8.8.8.8:53 www.baidu.com udp
US 8.8.8.8:53 bj2010.2288.org udp
US 8.8.8.8:53 bj2010.2288.org udp
US 8.8.8.8:53 93.65.42.20.in-addr.arpa udp
US 8.8.8.8:53 bj2010.2288.org udp
US 8.8.8.8:53 www.baidu.com udp
US 8.8.8.8:53 bj2010.2288.org udp
US 8.8.8.8:53 bj2010.2288.org udp
US 8.8.8.8:53 www.baidu.com udp
US 8.8.8.8:53 bj2010.2288.org udp

Files

memory/432-0-0x0000000000400000-0x0000000000431000-memory.dmp

\??\c:\windows\SysWOW64\bfufw.dll

MD5 c885fd8e84de53a8e00acc0cb79ead31
SHA1 d5395948cff06db673038438409020dbbe0f9c31
SHA256 c393648bdf6577fae59e80517602bae185faa56cd8d653e447769644ec00db67
SHA512 b3ac4f3ac38f051caa8bd9702fc32e98154e4b831d379b644be16fe80f9a898910a04a7e45ee483c74717fa8e58378d091cfe79a58dbb34973a9b211934a8fd8

memory/4500-5-0x0000000010000000-0x0000000010027000-memory.dmp

memory/432-6-0x0000000000400000-0x0000000000431000-memory.dmp

memory/4500-7-0x0000000010000000-0x0000000010027000-memory.dmp

memory/4500-8-0x0000000010000000-0x0000000010027000-memory.dmp