gh0strat | e959437b18df465a508a1fd585972be6ded86f322730c4054180520cf2f9bc5d

General

Target

JaffaCakes118_3f434449f3a5bdf0db446f7b9de9340e.exe
Size

188KB
MD5

3f434449f3a5bdf0db446f7b9de9340e
SHA1

3a2c3ed61d20e8168794422422f1ae8592164b2a
SHA256

e959437b18df465a508a1fd585972be6ded86f322730c4054180520cf2f9bc5d
SHA512

588c4fd25dada3801cf10609dc21346bf79d642499307841203f10c32632426bac81f7501f633e5001366665ecfa8cd07d13428d55b9603c15f9e52fac5d70a9
SSDEEP

3072:HoPqsxW6PnfJ3ihBLETBkbG+KcijGvpD2SC6llrdV3BbTakQ:NsxW6PnfJ3yLs+VKcwYVlbxTak

Score

10^/10

gh0strat bootkit discovery persistence rat

Malware Config

Signatures

Gh0st RAT payload 4 IoCs

resource	yara_rule
behavioral1/memory/2760-6-0x0000000000400000-0x000000000042F000-memory.dmp	family_gh0strat
behavioral1/memory/2864-5-0x0000000010000000-0x0000000010027000-memory.dmp	family_gh0strat
behavioral1/files/0x000c000000012262-4.dat	family_gh0strat
behavioral1/memory/2864-7-0x0000000010000000-0x0000000010027000-memory.dmp	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 2 IoCs

persistence

Terminal Services DLL

T1505.005

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\fastuserswitchingcompatibility\parameters\seRViCEDLl = "C:\\Windows\\system32\\hxhkf.dll"	JaffaCakes118_3f434449f3a5bdf0db446f7b9de9340e.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\fastuserswitchingcompatibility\parameters\seRViCEDLl = "C:\\Windows\\system32\\hxhkf.dll"	svchost.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\fastuserswitchingcompatibility\ImagePath = "%SystemRoot%\\System32\\svchost.exe -k netsvcs"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2864	svchost.exe

Loads dropped DLL 1 IoCs

pid	Process
2864	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\d2f5ca0e.del	JaffaCakes118_3f434449f3a5bdf0db446f7b9de9340e.exe
File opened for modification	C:\Windows\SysWOW64\hxhkf.dll	JaffaCakes118_3f434449f3a5bdf0db446f7b9de9340e.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	JaffaCakes118_3f434449f3a5bdf0db446f7b9de9340e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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	svchost.exe
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

Suspicious behavior: EnumeratesProcesses 17 IoCs

pid	Process
2760	JaffaCakes118_3f434449f3a5bdf0db446f7b9de9340e.exe
2864	svchost.exe
2864	svchost.exe
2864	svchost.exe
2864	svchost.exe
2864	svchost.exe
2864	svchost.exe
2864	svchost.exe
2864	svchost.exe
2864	svchost.exe
2864	svchost.exe
2864	svchost.exe
2864	svchost.exe
2864	svchost.exe
2864	svchost.exe
2864	svchost.exe
2864	svchost.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeBackupPrivilege	2864	svchost.exe
Token: SeSecurityPrivilege	2864	svchost.exe
Token: SeSecurityPrivilege	2864	svchost.exe
Token: SeBackupPrivilege	2864	svchost.exe
Token: SeSecurityPrivilege	2864	svchost.exe
Token: SeBackupPrivilege	2864	svchost.exe
Token: SeSecurityPrivilege	2864	svchost.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3f434449f3a5bdf0db446f7b9de9340e.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3f434449f3a5bdf0db446f7b9de9340e.exe"
1⤵
- Server Software Component: Terminal Services DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:2760

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k netsvcs
1⤵
- Server Software Component: Terminal Services DLL
- Sets service image path in registry
- 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 behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2864

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Server Software Component

1

T1505

Terminal Services DLL

1

T1505.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

\Windows\SysWOW64\hxhkf.dll

Filesize
148KB

MD5
c45604d4a427c984c46db0a3f7a05b7b

SHA1
9dc0e052fd644f7b028d5f2b717e25f609af7374

SHA256
513672ac5dbf2e4dc99954f36991614b9753f2a13173d35c1ae17d43a695c326

SHA512
3f157b847957380687729151471aa2047840d441380670bccb830a94e9c07ddc1ad9bdf6485b85a7077959ba0457528644193d2f287245c68ca83fb2fde8640b

Download Submit
memory/2760-6-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2760-0-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2864-5-0x0000000010000000-0x0000000010027000-memory.dmp

Filesize
156KB

Download
memory/2864-7-0x0000000010000000-0x0000000010027000-memory.dmp

Filesize
156KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads