Malware Analysis Report

2025-01-22 14:30

Sample ID 240623-rp6qgaxfml
Target 067ec51e899de8a311d410b4b996449f_JaffaCakes118
SHA256 26b0c85a5c79a701c962744b93ed6ef516a847c8ecbe1fcfece1bf5c3934a5f0
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

26b0c85a5c79a701c962744b93ed6ef516a847c8ecbe1fcfece1bf5c3934a5f0

Threat Level: Known bad

The file 067ec51e899de8a311d410b4b996449f_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

gh0strat bootkit persistence rat

Gh0st RAT payload

Gh0strat

Checks computer location settings

Loads dropped DLL

Executes dropped EXE

Writes to the Master Boot Record (MBR)

Drops file in System32 directory

Drops file in Windows directory

Program crash

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Modifies registry class

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-23 14:23

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-23 14:23

Reported

2024-06-23 14:25

Platform

win7-20240611-en

Max time kernel

142s

Max time network

134s

Command Line

"C:\Users\Admin\AppData\Local\Temp\067ec51e899de8a311d410b4b996449f_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

Executes dropped EXE

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

Drops file in System32 directory

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

Drops file in Windows directory

Description Indicator Process Target
File created C:\windows\alg.exe C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
File opened for modification C:\windows\alg.exe C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
File created C:\Windows\Sys.VBS C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
File created C:\WINDOWS\FF13.exe C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
File created C:\WINDOWS\FF12.exe C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A

Enumerates physical storage devices

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeBackupPrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeRestorePrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeBackupPrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeRestorePrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeBackupPrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeRestorePrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeBackupPrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeRestorePrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeBackupPrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeRestorePrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeBackupPrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeRestorePrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\067ec51e899de8a311d410b4b996449f_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\067ec51e899de8a311d410b4b996449f_JaffaCakes118.exe"

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

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

C:\Windows\SysWOW64\WScript.exe

"C:\Windows\System32\WScript.exe" "C:\Windows\Sys.VBS"

Network

Country Destination Domain Proto
US 8.8.8.8:53 v4heik.3322.org udp
US 8.8.8.8:53 www.baidu.com udp
US 8.8.8.8:53 www.baidu.com udp

Files

memory/2452-1-0x0000000000020000-0x0000000000022000-memory.dmp

memory/2452-0-0x0000000000400000-0x0000000000486000-memory.dmp

\Users\Admin\AppData\Local\Temp\svchost.exe

MD5 1f98b77fbf8b511b793c5a1a299cd768
SHA1 c0bac0e0527af4ff1fd566791ca3b5808a607b7e
SHA256 c126719d997a24d2448f8b29ba5cdac92ad61235485c369815ebd738a1a8d5ce
SHA512 1d066c0cafa1c0f045d54721569e2207efb04ad326aa26a8668d54e97b71399c44b5d2c1250e1f70eedf5d4e56e553a3548cbc7f69388ec2e3e0dc29512defb5

memory/2452-11-0x0000000001DD0000-0x0000000001E56000-memory.dmp

memory/2452-10-0x0000000001DD0000-0x0000000001E56000-memory.dmp

memory/2480-13-0x0000000000020000-0x0000000000022000-memory.dmp

memory/2452-17-0x0000000000400000-0x0000000000486000-memory.dmp

C:\Windows\Sys.VBS

MD5 e5baac34de9a9068a0c901392f21efe5
SHA1 77f9cb2be96bfbf4e0eefb27b759faeb13b50b29
SHA256 7fa5d6fb181d48105524c2836db0671faf8454d7236a74b434075ce64b52a7a9
SHA512 dac036e3136abdb14c799b52f91ccfa39699943b980276d563072d63a5bbd5fdf975cdce04f1df832d8a19735231a7ed9a52eddff2b6f2cc47b4b8a1aa62f374

memory/2480-29-0x0000000020000000-0x0000000020027000-memory.dmp

\Windows\SysWOW64\yjsoft.ini

MD5 f311e947a88036d433b46a0b0968aa29
SHA1 0e329260166ba33294252672edd64a47fba127be
SHA256 714ab8b249263e37cf30cc366fa75e0d8854688923689ae6090b3bd7942226f6
SHA512 faf13469a3c806b4bdb88599cd8db40d3881072920143c0f1e33cbeec9cebef31619ddf123171ce3e73f2fa5ff952a8a69cc2ab0be6c680486bc52bc0f93745e

memory/2480-31-0x0000000000540000-0x0000000000541000-memory.dmp

memory/2480-33-0x0000000020000000-0x0000000020027000-memory.dmp

memory/2480-32-0x0000000000400000-0x0000000000486000-memory.dmp

memory/2480-36-0x0000000000020000-0x0000000000022000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-23 14:23

Reported

2024-06-23 14:25

Platform

win10v2004-20240611-en

Max time kernel

136s

Max time network

127s

Command Line

"C:\Users\Admin\AppData\Local\Temp\067ec51e899de8a311d410b4b996449f_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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A

Executes dropped EXE

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

Loads dropped DLL

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

Drops file in System32 directory

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

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\Sys.VBS C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
File created C:\WINDOWS\FF13.exe C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
File created C:\WINDOWS\FF12.exe C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
File created C:\windows\alg.exe C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
File opened for modification C:\windows\alg.exe C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A

Enumerates physical storage devices

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000_Classes\Local Settings C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeBackupPrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Token: SeRestorePrivilege N/A C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\067ec51e899de8a311d410b4b996449f_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\067ec51e899de8a311d410b4b996449f_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 2836 -ip 2836

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2836 -s 220

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

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

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 2316 -ip 2316

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2316 -s 228

C:\Windows\SysWOW64\WScript.exe

"C:\Windows\System32\WScript.exe" "C:\Windows\Sys.VBS"

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 --field-trial-handle=4720,i,1236064252342462940,13180713657498721890,262144 --variations-seed-version --mojo-platform-channel-handle=4076 /prefetch:8

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 2316 -ip 2316

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2316 -s 1412

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 18.24.18.2.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 13.107.21.237:443 g.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 23.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.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 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp

Files

memory/2836-0-0x0000000000400000-0x0000000000486000-memory.dmp

memory/2836-1-0x00000000001D0000-0x00000000001D2000-memory.dmp

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

MD5 1f98b77fbf8b511b793c5a1a299cd768
SHA1 c0bac0e0527af4ff1fd566791ca3b5808a607b7e
SHA256 c126719d997a24d2448f8b29ba5cdac92ad61235485c369815ebd738a1a8d5ce
SHA512 1d066c0cafa1c0f045d54721569e2207efb04ad326aa26a8668d54e97b71399c44b5d2c1250e1f70eedf5d4e56e553a3548cbc7f69388ec2e3e0dc29512defb5

memory/2316-7-0x00000000001E0000-0x00000000001E2000-memory.dmp

memory/2836-11-0x0000000000400000-0x0000000000486000-memory.dmp

C:\Windows\Sys.VBS

MD5 e5baac34de9a9068a0c901392f21efe5
SHA1 77f9cb2be96bfbf4e0eefb27b759faeb13b50b29
SHA256 7fa5d6fb181d48105524c2836db0671faf8454d7236a74b434075ce64b52a7a9
SHA512 dac036e3136abdb14c799b52f91ccfa39699943b980276d563072d63a5bbd5fdf975cdce04f1df832d8a19735231a7ed9a52eddff2b6f2cc47b4b8a1aa62f374

C:\Windows\SysWOW64\yjsoft.ini

MD5 27c7d23ffc99fce127162f29d93c3d39
SHA1 1927c25a0bb975e68c60960b38391474141dc610
SHA256 ce8f5f9553599277f3349b01ebb7a2dd90b49336d116e18d733143770ae79c0c
SHA512 4a19eb1d8658141a81c058ca10b6c81c891d26793f538d7e557a458b75f31f66469caf8502bd9d61aecd4dd1c3b6abc6b11d07e2051922a06ef55571a5792016

memory/2316-24-0x0000000020000000-0x0000000020027000-memory.dmp

memory/2316-26-0x00000000035F0000-0x00000000035F1000-memory.dmp

memory/2316-29-0x0000000020000000-0x0000000020027000-memory.dmp

memory/2316-28-0x0000000000400000-0x0000000000486000-memory.dmp