gh0strat | 4fb51ca96177d18be97e26591287358e13e868d69c7b2794c8af06568658ab3b

General

Target

5f2988ab779dd3ef70914f4d208bf6b9_JaffaCakes118.exe
Size

140KB
MD5

5f2988ab779dd3ef70914f4d208bf6b9
SHA1

66d2309f54c6262ca377e048f04abfa7ba783f80
SHA256

4fb51ca96177d18be97e26591287358e13e868d69c7b2794c8af06568658ab3b
SHA512

195e29f45ec8c003f3f89c81979a3284e2d9914241ec9a07700537d8474a0b6b7bbfbbb8a0402ea7f3742d2d03a069a34dfdcff5dbc7ef16d99f413fee3e1939
SSDEEP

3072:UBqhYZFlRL6eQvAn9RraPEDknMfDISyU4n:3MFlRL6eOMLIS5o

Score

10^/10

gh0strat bootkit persistence rat vmprotect

Malware Config

Signatures

Gh0st RAT payload 3 IoCs

resource	yara_rule
behavioral1/files/0x000e000000014132-6.dat	family_gh0strat
behavioral1/memory/2424-8-0x0000000010000000-0x0000000010027000-memory.dmp	family_gh0strat
behavioral1/memory/2240-9-0x0000000000400000-0x0000000000457000-memory.dmp	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

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\fastuserswitchingcompatibility\parameters\servicedll = "C:\\Windows\\system32\\wgkir.dll"	svchost.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\fastuserswitchingcompatibility\ImagePath = "%SystemRoot%\\System32\\svchost.exe -k netsvcs"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2424	svchost.exe

Loads dropped DLL 1 IoCs

pid	Process
2424	svchost.exe

VMProtect packed file 3 IoCs

Detects executables packed with VMProtect commercial packer.

vmprotect

resource	yara_rule
behavioral1/memory/2240-0-0x0000000000400000-0x0000000000457000-memory.dmp	vmprotect
behavioral1/memory/2240-3-0x0000000000400000-0x0000000000457000-memory.dmp	vmprotect
behavioral1/memory/2240-9-0x0000000000400000-0x0000000000457000-memory.dmp	vmprotect

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\d2f5ca0e.del	5f2988ab779dd3ef70914f4d208bf6b9_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\wgkir.dll	5f2988ab779dd3ef70914f4d208bf6b9_JaffaCakes118.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
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
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\ActiveMovie	svchost.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2240	5f2988ab779dd3ef70914f4d208bf6b9_JaffaCakes118.exe
2424	svchost.exe
2424	svchost.exe
2424	svchost.exe
2424	svchost.exe
2424	svchost.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeBackupPrivilege	2240	5f2988ab779dd3ef70914f4d208bf6b9_JaffaCakes118.exe
Token: SeRestorePrivilege	2240	5f2988ab779dd3ef70914f4d208bf6b9_JaffaCakes118.exe
Token: SeBackupPrivilege	2424	svchost.exe
Token: SeSecurityPrivilege	2424	svchost.exe
Token: SeSecurityPrivilege	2424	svchost.exe
Token: SeBackupPrivilege	2424	svchost.exe
Token: SeSecurityPrivilege	2424	svchost.exe
Token: SeBackupPrivilege	2424	svchost.exe
Token: SeSecurityPrivilege	2424	svchost.exe

C:\Users\Admin\AppData\Local\Temp\5f2988ab779dd3ef70914f4d208bf6b9_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\5f2988ab779dd3ef70914f4d208bf6b9_JaffaCakes118.exe"
1⤵
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2240

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k netsvcs
1⤵
- Server Software Component: Terminal Services DLL
- Sets service image path in registry
- Deletes itself
- Loads dropped DLL
- Writes to the Master Boot Record (MBR)
- Checks processor information in registry
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2424

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
148KB

MD5
152d00fbba478612629b5be734f5e4e0

SHA1
47b64683e37cc8e0b4fa4ec3c05e3240a2e670e4

SHA256
61f5acdd20e15733b81f542be553718486a111f8afa01903a359ef19eb9a73d9

SHA512
ad029f7896782baae4bfd180d001753c3c569c961cad75a45c70474cd33bb4fb13642b3021648f56fcbd5be3fa97be22bf56b607dcd59e2041b0593510dad37f

Download Submit
memory/2240-0-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/2240-1-0x00000000002C0000-0x0000000000317000-memory.dmp

Filesize
348KB

Download
memory/2240-2-0x0000000000450000-0x0000000000451000-memory.dmp

Filesize
4KB

Download
memory/2240-3-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/2240-9-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/2424-8-0x0000000010000000-0x0000000010027000-memory.dmp

Filesize
156KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads