gh0strat | e74ceb74444a23b3768ed05114717fc14770e487882b1d38f8b145be63d56e10

General

Target

JaffaCakes118_50892c8f70c82473e272d526523699fd.exe
Size

113KB
MD5

50892c8f70c82473e272d526523699fd
SHA1

ac79d91863306c79dd33d7a47fbcde7818c50088
SHA256

e74ceb74444a23b3768ed05114717fc14770e487882b1d38f8b145be63d56e10
SHA512

2fd6c938771c0b1d4f13617c5a4096a45d36a54b0d25a092a9a1c3e26d629e757d782501b94941024fce3d6780e9cc64ae774f6e907dac708f1eb0e136c31ad8
SSDEEP

3072:ebYzLnmvvzLZmYFfO37SynB+SMRMvgbEdQnaEx:ebYfYZZxYSynNl54B

Score

10^/10

gh0strat bootkit discovery persistence rat

Malware Config

Signatures

Gh0st RAT payload 1 IoCs

resource	yara_rule
behavioral2/files/0x000500000001e52e-16.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"	opeDD32.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1170604239-850860757-3112005715-1000\Control Panel\International\Geo\Nation	JaffaCakes118_50892c8f70c82473e272d526523699fd.exe

Executes dropped EXE 1 IoCs

pid	Process
2220	opeDD32.exe

Loads dropped DLL 1 IoCs

pid	Process
4496	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	opeDD32.exe
File opened for modification	C:\Windows\SysWOW64\d2f5ca0e.del	opeDD32.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 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_50892c8f70c82473e272d526523699fd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	opeDD32.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 2 IoCs

pid	Process
2220	opeDD32.exe
2220	opeDD32.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeBackupPrivilege	4496	svchost.exe
Token: SeSecurityPrivilege	4496	svchost.exe
Token: SeSecurityPrivilege	4496	svchost.exe
Token: SeBackupPrivilege	4496	svchost.exe
Token: SeSecurityPrivilege	4496	svchost.exe
Token: SeBackupPrivilege	4496	svchost.exe
Token: SeSecurityPrivilege	4496	svchost.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3224 wrote to memory of 2220	3224	JaffaCakes118_50892c8f70c82473e272d526523699fd.exe	86
PID 3224 wrote to memory of 2220	3224	JaffaCakes118_50892c8f70c82473e272d526523699fd.exe	86
PID 3224 wrote to memory of 2220	3224	JaffaCakes118_50892c8f70c82473e272d526523699fd.exe	86

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_50892c8f70c82473e272d526523699fd.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_50892c8f70c82473e272d526523699fd.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3224
- C:\Users\Admin\AppData\Local\Temp\opeDD32.exe
  "C:\Users\Admin\AppData\Local\Temp\opeDD32.exe"
  2⤵
  - Server Software Component: Terminal Services DLL
  - Executes dropped EXE
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:2220

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k netsvcs -s fastuserswitchingcompatibility
1⤵
- 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:4496

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

2

T1012

System Information Discovery

3

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:\Users\Admin\AppData\Local\Temp\opeDD32.exe

Filesize
184KB

MD5
5ad77527bde52156f9044b200e359acf

SHA1
fd617e586b0c4136e291d81530d4353a2612fe33

SHA256
8b8a2efc4edbfed5ca6f94ecb941c0a087104d1ee6773b5486b866311101626c

SHA512
ecc84eeb7b8ed22db892a73d0d5fae6622028cee3b82d753a6982c2b843cb21822e06aa3a1c72523a5410a2e9bc5e467284e328dc51fa75fbe05c7aa49ba346b

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

Filesize
148KB

MD5
add4e7c56af3886c1a510e0f3eee1618

SHA1
4b4f0c09d3f70d29f573065fc0c5fb45ba3d6599

SHA256
33f9a87c530916975295a2942ca547ae5cdb757562c49d4e7fb3001504255f0b

SHA512
79a77e07a37f757e7b661fb110dba36bea402802bf0abf148445289cd752aeb413705fd7f2136d4db3023407e2913ea8c9c0204506b991c95561f792802b1237

Download Submit
memory/3224-0-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/3224-13-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads