gh0strat | 2e23527092214412682e1a357a5fe51f63ef36012dfdd579b95290bc861aefeb

General

Target

JaffaCakes118_4caae72ac0b1d2a5180b007f8fd770c2.exe
Size

175KB
MD5

4caae72ac0b1d2a5180b007f8fd770c2
SHA1

da2b497207fe11182b82f703165c88ac5e0e6097
SHA256

2e23527092214412682e1a357a5fe51f63ef36012dfdd579b95290bc861aefeb
SHA512

7c3a3f0d7840b906ddca9c37ca99daa4dcca8a791ebb8bd0e1e1aa74516b01151945e87090e249cdc1ebc7bc1ff8886414d1a448a523394d0e7ecbc044f699d6
SSDEEP

3072:+0SpUMepbCwVK2xCMS7lgjp8hRaqp3yVoUlfVvRvFdaXRjdUsO/j7fjHt8JGC:iUMIb9jxOgjWhRaU34VRhFdaXHXO/j7x

Score

10^/10

gh0strat bootkit discovery persistence rat vmprotect

Malware Config

Signatures

Gh0st RAT payload 1 IoCs

resource	yara_rule
behavioral2/files/0x000b00000001e695-11.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"	setup.exe

Executes dropped EXE 1 IoCs

pid	Process
4888	setup.exe

Loads dropped DLL 1 IoCs

pid	Process
2520	svchost.exe

VMProtect packed file 3 IoCs

Detects executables packed with VMProtect commercial packer.

vmprotect

resource	yara_rule
behavioral2/memory/4220-0-0x0000000001000000-0x0000000001057000-memory.dmp	vmprotect
behavioral2/memory/4220-2-0x0000000001000000-0x0000000001057000-memory.dmp	vmprotect
behavioral2/memory/4220-13-0x0000000001000000-0x0000000001057000-memory.dmp	vmprotect

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\""	JaffaCakes118_4caae72ac0b1d2a5180b007f8fd770c2.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	setup.exe
File opened for modification	C:\Windows\SysWOW64\d2f5ca0e.del	setup.exe

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_4caae72ac0b1d2a5180b007f8fd770c2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	setup.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	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
Key created	\REGISTRY\USER\.DEFAULT\Software	svchost.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4888	setup.exe
4888	setup.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeBackupPrivilege	2520	svchost.exe
Token: SeSecurityPrivilege	2520	svchost.exe
Token: SeSecurityPrivilege	2520	svchost.exe
Token: SeBackupPrivilege	2520	svchost.exe
Token: SeSecurityPrivilege	2520	svchost.exe
Token: SeBackupPrivilege	2520	svchost.exe
Token: SeSecurityPrivilege	2520	svchost.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4220 wrote to memory of 4888	4220	JaffaCakes118_4caae72ac0b1d2a5180b007f8fd770c2.exe	88
PID 4220 wrote to memory of 4888	4220	JaffaCakes118_4caae72ac0b1d2a5180b007f8fd770c2.exe	88
PID 4220 wrote to memory of 4888	4220	JaffaCakes118_4caae72ac0b1d2a5180b007f8fd770c2.exe	88

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4caae72ac0b1d2a5180b007f8fd770c2.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4caae72ac0b1d2a5180b007f8fd770c2.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4220
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\setup.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\setup.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:4888

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:2520

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\setup.exe

Filesize
175KB

MD5
8dbf1339e331381344e61628d4eb849c

SHA1
47ea8449f313dae8a07a27e2aba5224b4c86044b

SHA256
343b7c35986bc5841a4fd6eb0434f491a119325a26d90041ededd93dbba3be2a

SHA512
1c7be790882c6c80297dea471667f35c43e0a80e11e7381ef6089b1d3244c4ac9c8b162f55fd682ac5c5382319dfc0fde55062059e098efa9c4365ff9b017563

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

Filesize
148KB

MD5
93c11972fd68942cbdf19e3ca1457329

SHA1
58e1bdb94d5b3fe602cd21abbc785e461a63c807

SHA256
f3d853f703039dc0f8384ac61cddfc1b477e2c5adcaf9b101e94b08dc352aa4b

SHA512
e56b05201783a2c3175ae7ad78c0a8c45cefea509189b708bb6ac337a17baa97e1ec0fca160fe5d555c3ed15a333f6f05200787d89b7b2499088272ae9c6c3d6

Download Submit
memory/4220-0-0x0000000001000000-0x0000000001057000-memory.dmp

Filesize
348KB

Download
memory/4220-3-0x000000000104D000-0x000000000104E000-memory.dmp

Filesize
4KB

Download
memory/4220-2-0x0000000001000000-0x0000000001057000-memory.dmp

Filesize
348KB

Download
memory/4220-13-0x0000000001000000-0x0000000001057000-memory.dmp

Filesize
348KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads