gh0strat | 77a11fc24b2887d9dbb378b53036c104bbaddaedf058aada1e2ac49ac0c8ed8a

General

Target

93aff93ac29ba108fc510f256554d607_JaffaCakes118.exe
Size

192KB
MD5

93aff93ac29ba108fc510f256554d607
SHA1

5bff8bc2ca987f18cb4307436810e5a41d17de90
SHA256

77a11fc24b2887d9dbb378b53036c104bbaddaedf058aada1e2ac49ac0c8ed8a
SHA512

f5fa0cd64779cf306bc7bb05200a3660284d867910ebdd0ca6ea09e122e29079597f9f6b210fcdb7a6901b2bb81a64562021781dfce8bc27de58139a15dcb31f
SSDEEP

3072:DHQfaVtVZJX+xwVn0sk4WULmrkmiovIPxH4Ka+5T454I/wov3w9pQdxkVu/v1R7d:AaVtVixekWLBxYkTYN/hiu30u/tFYIci

Score

10^/10

gh0strat bootkit discovery persistence rat

Malware Config

Signatures

Gh0st RAT payload 3 IoCs

resource	yara_rule
behavioral1/files/0x00080000000120fc-4.dat	family_gh0strat
behavioral1/memory/1184-6-0x0000000010000000-0x0000000010028000-memory.dmp	family_gh0strat
behavioral1/memory/400-7-0x0000000000400000-0x0000000000431000-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

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\\tufom.dll"	93aff93ac29ba108fc510f256554d607_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\fastuserswitchingcompatibility\Parameters\ServiceDll = "C:\\Windows\\system32\\tufom.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
1184	svchost.exe

Loads dropped DLL 1 IoCs

pid	Process
1184	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	93aff93ac29ba108fc510f256554d607_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\tufom.dll	93aff93ac29ba108fc510f256554d607_JaffaCakes118.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	93aff93ac29ba108fc510f256554d607_JaffaCakes118.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 6 IoCs

pid	Process
400	93aff93ac29ba108fc510f256554d607_JaffaCakes118.exe
1184	svchost.exe
1184	svchost.exe
1184	svchost.exe
1184	svchost.exe
1184	svchost.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeBackupPrivilege	1184	svchost.exe
Token: SeSecurityPrivilege	1184	svchost.exe
Token: SeSecurityPrivilege	1184	svchost.exe
Token: SeBackupPrivilege	1184	svchost.exe
Token: SeSecurityPrivilege	1184	svchost.exe
Token: SeBackupPrivilege	1184	svchost.exe
Token: SeSecurityPrivilege	1184	svchost.exe

C:\Users\Admin\AppData\Local\Temp\93aff93ac29ba108fc510f256554d607_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\93aff93ac29ba108fc510f256554d607_JaffaCakes118.exe"
1⤵
- Server Software Component: Terminal Services DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:400

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:1184

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:\windows\SysWOW64\tufom.dll

Filesize
152KB

MD5
d33a27775cef7f5d7b54217f2a3014e2

SHA1
77632e3c902ed06de42197496446ff0ca4148bb5

SHA256
615972cabe8b73c6568ecca0c9a48dc9c07e037bd974826e4128a18a47bdf979

SHA512
7132b62ed25d2ec3fa60f3ee2ffbe7fb231f64ea1a95a3dacba9260ee6f7bd6d625fff514bcdf0447723977961dff8a6599bcb444c5797391c356df4abee953f

Download Submit
memory/400-0-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/400-1-0x0000000000230000-0x0000000000261000-memory.dmp

Filesize
196KB

Download
memory/400-7-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/1184-6-0x0000000010000000-0x0000000010028000-memory.dmp

Filesize
160KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads