gh0strat | b6ad56593921d5a26cfbda1cad5743d267522cb3d664cf90b758c6ebb2391d1f

General

Target

JaffaCakes118_385e647581c6f296b0b181d5c709b8fc.exe
Size

184KB
MD5

385e647581c6f296b0b181d5c709b8fc
SHA1

5c934308b7bae9176cf3f84ceb7516f2b65a06ea
SHA256

b6ad56593921d5a26cfbda1cad5743d267522cb3d664cf90b758c6ebb2391d1f
SHA512

80191bcf09cd936b1b7f639d1979f2550114a3117da7863d979cd394612666d775e67f7c448078c684e12841ef66e8b2f92d9555eb86dcaabae75cd5479c8479
SSDEEP

3072:htZBk6WsJ7vNnSXgoO0FI0jwW9rZ3AiefzpTz3k7fwdo+:jZBk6WsJ74Jjv9BAiefzpTz/do

Score

10^/10

gh0strat bootkit discovery persistence rat

Malware Config

Signatures

Gh0st RAT payload 1 IoCs

resource	yara_rule
behavioral1/files/0x00080000000120fe-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_385e647581c6f296b0b181d5c709b8fc.exe

Deletes itself 1 IoCs

pid	Process
2272	svchost.exe

Loads dropped DLL 1 IoCs

pid	Process
2272	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_385e647581c6f296b0b181d5c709b8fc.exe
File opened for modification	C:\Windows\SysWOW64\d2f5ca0e.del	JaffaCakes118_385e647581c6f296b0b181d5c709b8fc.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_385e647581c6f296b0b181d5c709b8fc.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 1 IoCs

pid	Process
2776	JaffaCakes118_385e647581c6f296b0b181d5c709b8fc.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeBackupPrivilege	2272	svchost.exe
Token: SeSecurityPrivilege	2272	svchost.exe
Token: SeSecurityPrivilege	2272	svchost.exe
Token: SeBackupPrivilege	2272	svchost.exe
Token: SeSecurityPrivilege	2272	svchost.exe
Token: SeBackupPrivilege	2272	svchost.exe
Token: SeSecurityPrivilege	2272	svchost.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_385e647581c6f296b0b181d5c709b8fc.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_385e647581c6f296b0b181d5c709b8fc.exe"
1⤵
- Server Software Component: Terminal Services DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:2776

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:2272

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

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Downloads

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

Filesize
148KB

MD5
8e76ea785b4ce97dfbc1cdcc6941517b

SHA1
1794f00a3cb10b0d65c96f802cd4c15e9fb1cbaa

SHA256
5873ee7d040bdd061e35338683eb2b78a4290799d36e4079cb04a1801dc15dcd

SHA512
d026f952d4825caa6f8e70c9946f9501083ffb0407602c88eb62e42d0175c4bbc8d2aa923e1fdcf1cded3dfa960a98c75d72b828213a6315cbfdcb1ebb64cafd

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads