gh0strat | 77e73256d33f6cf6f1a714068fdd1d7883921761d8587ec93f7db3a42cd4e442

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
behavioral1/files/0x000b000000012281-2.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
2316	svchost.exe

Loads dropped DLL 1 IoCs

pid	Process
2316	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	JaffaCakes118_517868cb2954b4e6a133593e6b342475.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 6 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
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\ActiveMovie\devenum	svchost.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\ActiveMovie\devenum\Version = "7"	svchost.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2096	JaffaCakes118_517868cb2954b4e6a133593e6b342475.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeBackupPrivilege	2316	svchost.exe
Token: SeSecurityPrivilege	2316	svchost.exe
Token: SeSecurityPrivilege	2316	svchost.exe
Token: SeBackupPrivilege	2316	svchost.exe
Token: SeSecurityPrivilege	2316	svchost.exe
Token: SeBackupPrivilege	2316	svchost.exe
Token: SeSecurityPrivilege	2316	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:2096

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k netsvcs
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:2316

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Server Software Component

1

T1505

Terminal Services DLL

1

T1505.005

Privilege Escalation

Defense Evasion

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

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Downloads

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

Filesize
148KB

MD5
1bf1a655381d96214c2ed74b51561647

SHA1
9e98eb29a799dadb2faefa0dfa6fb9a6d8eaad9e

SHA256
b41b58ab64f7a8546ec90fc9a601d969a411bb1ae9e7f82367db1af4a3149d3c

SHA512
91fbfa11fd6b6cddc64914a6efae85951e2b3c739c55441943c46ebd578f14123b8eb0fc7f63b42591a0bf812e2e2d0b1ffa0e9a82bc340e02bf0b6ceef3679f

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads