gh0strat | 50e3416e50666938a61d2a111d9e4e59cef25ec5984a0d4e0762de0510fcb226

General

Target

74843f1fbed57103c8334467c1b3ac3e_JaffaCakes118.exe
Size

282KB
MD5

74843f1fbed57103c8334467c1b3ac3e
SHA1

94cffc0ef106a9076c08bd4a762c4e195e1710b5
SHA256

50e3416e50666938a61d2a111d9e4e59cef25ec5984a0d4e0762de0510fcb226
SHA512

f10f0857c5e13ee123c7bc45b64f7c9933eb173abf46867b722b5919bfc561d9267592c1410ac06b4684c8a5dc8c7a40edd4e684f513427d07d290603432bcda
SSDEEP

6144:QiqvdXjiVwTcbaALDSuQwMq/AS/ed6paqlJrhBJN:QigdXEwI2A3DMA/i6pawJVBJN

Score

10^/10

gh0strat bootkit discovery persistence rat

Malware Config

Signatures

Gh0st RAT payload 1 IoCs

Processes:

resource	yara_rule
\??\c:\windows\SysWOW64\ntfastuserswitchingcompatibility.dll	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 1 IoCs

persistence

Terminal Services DLL

T1505.005

Processes:

pzpB155.tmp

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\fastuserswitchingcompatibility\Parameters\ServiceDll = "C:\\Windows\\system32\\ntfastuserswitchingcompatibility.dll"	pzpB155.tmp

Executes dropped EXE 1 IoCs

Processes:

pzpB155.tmp

pid process

2516 pzpB155.tmp
Loads dropped DLL 3 IoCs

Processes:

74843f1fbed57103c8334467c1b3ac3e_JaffaCakes118.exesvchost.exe

pid process

1528 74843f1fbed57103c8334467c1b3ac3e_JaffaCakes118.exe
1528 74843f1fbed57103c8334467c1b3ac3e_JaffaCakes118.exe
2100 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

Processes:

svchost.exe

description ioc process

File opened for modification \??\PhysicalDrive0 svchost.exe

pid	process
2516	pzpB155.tmp

pid	process
1528	74843f1fbed57103c8334467c1b3ac3e_JaffaCakes118.exe
1528	74843f1fbed57103c8334467c1b3ac3e_JaffaCakes118.exe
2100	svchost.exe

description	ioc	process
File opened for modification	\??\PhysicalDrive0	svchost.exe

Drops file in System32 directory 2 IoCs

Processes:

pzpB155.tmp

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\ntfastuserswitchingcompatibility.dll	pzpB155.tmp
File opened for modification	C:\Windows\SysWOW64\d2f5ca0e.del	pzpB155.tmp

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

Processes:

74843f1fbed57103c8334467c1b3ac3e_JaffaCakes118.exepzpB155.tmpsvchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	74843f1fbed57103c8334467c1b3ac3e_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	pzpB155.tmp
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

Processes:

svchost.exe

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

Processes:

svchost.exe

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
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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum	svchost.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

74843f1fbed57103c8334467c1b3ac3e_JaffaCakes118.exepzpB155.tmp

pid process

1528 74843f1fbed57103c8334467c1b3ac3e_JaffaCakes118.exe
2516 pzpB155.tmp

pid	process
1528	74843f1fbed57103c8334467c1b3ac3e_JaffaCakes118.exe
2516	pzpB155.tmp

Suspicious use of AdjustPrivilegeToken 7 IoCs

Processes:

svchost.exe

description	pid	process
Token: SeBackupPrivilege	2100	svchost.exe
Token: SeSecurityPrivilege	2100	svchost.exe
Token: SeSecurityPrivilege	2100	svchost.exe
Token: SeBackupPrivilege	2100	svchost.exe
Token: SeSecurityPrivilege	2100	svchost.exe
Token: SeBackupPrivilege	2100	svchost.exe
Token: SeSecurityPrivilege	2100	svchost.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

74843f1fbed57103c8334467c1b3ac3e_JaffaCakes118.exe

description	pid	process	target process
PID 1528 wrote to memory of 2516	1528	74843f1fbed57103c8334467c1b3ac3e_JaffaCakes118.exe	pzpB155.tmp
PID 1528 wrote to memory of 2516	1528	74843f1fbed57103c8334467c1b3ac3e_JaffaCakes118.exe	pzpB155.tmp
PID 1528 wrote to memory of 2516	1528	74843f1fbed57103c8334467c1b3ac3e_JaffaCakes118.exe	pzpB155.tmp
PID 1528 wrote to memory of 2516	1528	74843f1fbed57103c8334467c1b3ac3e_JaffaCakes118.exe	pzpB155.tmp

C:\Users\Admin\AppData\Local\Temp\74843f1fbed57103c8334467c1b3ac3e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\74843f1fbed57103c8334467c1b3ac3e_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1528

C:\Users\Admin\AppData\Local\Temp\pzpB155.tmp
"C:\Users\Admin\AppData\Local\Temp\pzpB155.tmp"
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:2516

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k netsvcs
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:2100

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Server Software Component

1

T1505

Terminal Services DLL

1

T1505.005

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Defense Evasion

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

\??\c:\windows\SysWOW64\ntfastuserswitchingcompatibility.dll
Filesize
148KB

MD5
099da793acea8c8f0e4dd0133bfb6625

SHA1
29f1e8158ad52ae7efc45181a4c85dfbe2b24554

SHA256
4bb670236a11613749c682391be2dec7b2dfbd9228427fd3d3891b917afb3b5b

SHA512
17b0604a91e7f4088ae3e79dee40455a2eaf6d8ceea09d4b7b495b6f05cf8132fc7292610be76121be064a2e421c03601f18f2c242ebfb24f5cf7857717ecae1

Download Submit
\Users\Admin\AppData\Local\Temp\pzpB155.tmp
Filesize
176KB

MD5
ded2fb39350413aba7ff9e7392c51fff

SHA1
773a679dfc0a460b6df9bc3d5c77c735df9b11f0

SHA256
f4f50c6b8b08293b51e97416324f90ce46216264b69217b3b812f7b7c3a129e8

SHA512
9f8db029fcee85bd499750c7981ec5222697e5eb7c5f7eb770e6397be53274095c5434ea94e340838dc161f904950f9a71da09c8b9550526f775ebfe487c6859

Download Submit
memory/1528-5-0x0000000000411000-0x0000000000416000-memory.dmp

Filesize
20KB

Download
memory/1528-0-0x0000000000220000-0x000000000024F000-memory.dmp

Filesize
188KB

Download
memory/1528-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1528-6-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1528-20-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1528-4-0x0000000000220000-0x000000000024F000-memory.dmp

Filesize
188KB

Download
memory/1528-3-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1528-2-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1528-1-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1528-19-0x0000000000220000-0x000000000024F000-memory.dmp

Filesize
188KB

Download
memory/1528-10-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

Loading Replay Monitor...

Downloads