gh0strat | 62d0df06a3d3bde1494f312ea7b13894b6cbc809ac57e54cc8bec19973e2812e

General

Target

JaffaCakes118_5ae975e2cabf893cb93eb59265636077.exe
Size

192KB
MD5

5ae975e2cabf893cb93eb59265636077
SHA1

1f32f75bb3a88e8af88087b0949f8e13b7f21cd2
SHA256

62d0df06a3d3bde1494f312ea7b13894b6cbc809ac57e54cc8bec19973e2812e
SHA512

f90ea988f6fbfd9ecba1ac49fcbef847829002db38726251fd0848d10f00baa579d440aa53f4d824bbc3aef31570c010e8b70b2970b58fa234f3e6ae350250c7
SSDEEP

3072:4UvjUaIc/Jm9br3SIABZz1oXS1xTOy0tMhAW7YD1sQvvbVckFgzua4:4UYaIcs9iIxXE1Oy0+hAWUD1ssTVcsta

Score

10^/10

gh0strat bootkit discovery persistence rat

Malware Config

Signatures

Gh0st RAT payload 4 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e0ff-3.dat	family_gh0strat
behavioral2/memory/2592-5-0x0000000010000000-0x0000000010027000-memory.dmp	family_gh0strat
behavioral2/memory/2568-6-0x0000000000400000-0x0000000000431000-memory.dmp	family_gh0strat
behavioral2/memory/2592-7-0x0000000010000000-0x0000000010027000-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:\\PROGRA~3\\DRM\\beyms.dll"	JaffaCakes118_5ae975e2cabf893cb93eb59265636077.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\fastuserswitchingcompatibility\Parameters\ServiceDll = "C:\\PROGRA~3\\DRM\\beyms.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
2592	svchost.exe

Loads dropped DLL 1 IoCs

pid	Process
2592	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 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\d2f5ca0e.del	JaffaCakes118_5ae975e2cabf893cb93eb59265636077.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\PROGRA~3\DRM\beyms.dll	JaffaCakes118_5ae975e2cabf893cb93eb59265636077.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_5ae975e2cabf893cb93eb59265636077.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\Microsoft\ActiveMovie\devenum	svchost.exe
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

Suspicious behavior: EnumeratesProcesses 34 IoCs

pid	Process
2568	JaffaCakes118_5ae975e2cabf893cb93eb59265636077.exe
2568	JaffaCakes118_5ae975e2cabf893cb93eb59265636077.exe
2592	svchost.exe
2592	svchost.exe
2592	svchost.exe
2592	svchost.exe
2592	svchost.exe
2592	svchost.exe
2592	svchost.exe
2592	svchost.exe
2592	svchost.exe
2592	svchost.exe
2592	svchost.exe
2592	svchost.exe
2592	svchost.exe
2592	svchost.exe
2592	svchost.exe
2592	svchost.exe
2592	svchost.exe
2592	svchost.exe
2592	svchost.exe
2592	svchost.exe
2592	svchost.exe
2592	svchost.exe
2592	svchost.exe
2592	svchost.exe
2592	svchost.exe
2592	svchost.exe
2592	svchost.exe
2592	svchost.exe
2592	svchost.exe
2592	svchost.exe
2592	svchost.exe
2592	svchost.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeBackupPrivilege	2592	svchost.exe
Token: SeSecurityPrivilege	2592	svchost.exe
Token: SeSecurityPrivilege	2592	svchost.exe
Token: SeBackupPrivilege	2592	svchost.exe
Token: SeSecurityPrivilege	2592	svchost.exe
Token: SeBackupPrivilege	2592	svchost.exe
Token: SeSecurityPrivilege	2592	svchost.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5ae975e2cabf893cb93eb59265636077.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5ae975e2cabf893cb93eb59265636077.exe"
1⤵
- Server Software Component: Terminal Services DLL
- Drops file in System32 directory
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:2568

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k netsvcs -s fastuserswitchingcompatibility
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:2592

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

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Downloads

\??\c:\progra~3\drm\beyms.dll

Filesize
148KB

MD5
2853e036a21ed0ff0743a9841c2df458

SHA1
27d979858f906a143bd6a692ac2ab6679b214682

SHA256
ee7fa513a02d05eaa4e4850b254696616c71f3cbd0de6134de00c8efc0954ade

SHA512
5be2688e1038b1e500a2c8a115e5a53fba589f63ac19a360bd6e79bb8eb351faa0495e17a3911072a2860b3db6d128d3dab00a0e41b05292d09552c6cac87c9f

Download Submit
memory/2568-0-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2568-6-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2592-5-0x0000000010000000-0x0000000010027000-memory.dmp

Filesize
156KB

Download
memory/2592-7-0x0000000010000000-0x0000000010027000-memory.dmp

Filesize
156KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads