gh0strat | 77e73256d33f6cf6f1a714068fdd1d7883921761d8587ec93f7db3a42cd4e442

Analysis

max time kernel
128s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20250129-en
resource tags

arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system
submitted
29-01-2025 01:55

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General

Target

JaffaCakes118_517868cb2954b4e6a133593e6b342475.exe
Size

184KB
MD5

517868cb2954b4e6a133593e6b342475
SHA1

d97b6a8892ba534f6195c0b14b38c76f946a64aa
SHA256

77e73256d33f6cf6f1a714068fdd1d7883921761d8587ec93f7db3a42cd4e442
SHA512

e475e490493cf20b42c42498a21158abc9cc61f311fbbdf8dd8c772fb1e3e2c0cd71a0c8d617f79b3a888e4376fae84c13dc91f3c72ef73108656aaa32f63c36
SSDEEP

3072:yffBs6W722mjGNmsO02wjZ1MDET5mDWRlb6BT9LjtEcUHEspJGTBtINhxO5+:QfBs6W07sO02wj/Rho+5EGGTL4hxO5

Score

10^/10

gh0strat bootkit discovery persistence rat

Malware Config

Signatures

Gh0st RAT payload 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001e69f-2.dat	family_gh0strat

Gh0strat
Gh0st RAT is a remote access tool (RAT) with its source code public and it has been used by multiple Chinese groups.
rat gh0strat
Gh0strat family
gh0strat

Server Software Component: Terminal Services DLL 1 TTPs 1 IoCs

persistence

Terminal Services DLL

T1505.005

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\fastuserswitchingcompatibility\Parameters\ServiceDll = "C:\\Windows\\system32\\ntfastuserswitchingcompatibility.dll"	JaffaCakes118_517868cb2954b4e6a133593e6b342475.exe

Deletes itself 1 IoCs

pid	Process
4440	svchost.exe

Loads dropped DLL 1 IoCs

pid	Process
4440	svchost.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	svchost.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\ntfastuserswitchingcompatibility.dll	JaffaCakes118_517868cb2954b4e6a133593e6b342475.exe
File opened for modification	C:\Windows\SysWOW64\d2f5ca0e.del	JaffaCakes118_517868cb2954b4e6a133593e6b342475.exe

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_517868cb2954b4e6a133593e6b342475.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	svchost.exe

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie	svchost.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum\Version = "7"	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	svchost.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
932	JaffaCakes118_517868cb2954b4e6a133593e6b342475.exe
932	JaffaCakes118_517868cb2954b4e6a133593e6b342475.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeBackupPrivilege	4440	svchost.exe
Token: SeSecurityPrivilege	4440	svchost.exe
Token: SeSecurityPrivilege	4440	svchost.exe
Token: SeBackupPrivilege	4440	svchost.exe
Token: SeSecurityPrivilege	4440	svchost.exe
Token: SeBackupPrivilege	4440	svchost.exe
Token: SeSecurityPrivilege	4440	svchost.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_517868cb2954b4e6a133593e6b342475.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_517868cb2954b4e6a133593e6b342475.exe"
1⤵
- Server Software Component: Terminal Services DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:932

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k netsvcs -s fastuserswitchingcompatibility
1⤵
- Deletes itself
- Loads dropped DLL
- Writes to the Master Boot Record (MBR)
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
PID:4440

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

T1542

Bootkit

T1542.003

Server Software Component

T1505

Terminal Services DLL

T1505.005

Privilege Escalation

Defense Evasion

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
148KB

MD5
1bf1a655381d96214c2ed74b51561647

SHA1
9e98eb29a799dadb2faefa0dfa6fb9a6d8eaad9e

SHA256
b41b58ab64f7a8546ec90fc9a601d969a411bb1ae9e7f82367db1af4a3149d3c

SHA512
91fbfa11fd6b6cddc64914a6efae85951e2b3c739c55441943c46ebd578f14123b8eb0fc7f63b42591a0bf812e2e2d0b1ffa0e9a82bc340e02bf0b6ceef3679f

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