gh0strat | 2210d6f71955a5a3a09a9e790a0bcf8ac3422517ea5371f8fe4aaa282e25ffd9

General

Target

JaffaCakes118_441ec2644d74080aeedce16d3e1e00f9.exe
Size

25.8MB
MD5

441ec2644d74080aeedce16d3e1e00f9
SHA1

41b6b9abd7aad25dcb5933f163872f0120d9ca7a
SHA256

2210d6f71955a5a3a09a9e790a0bcf8ac3422517ea5371f8fe4aaa282e25ffd9
SHA512

53b706fd57503d8877ed1ba1831b594d2acb5b2fa7c05bd46f1a91f059542daf6803b7bd72d1ce2b2d8b419ce3f30f52a7108e47b920ce8f373ab0aed7edfeef
SSDEEP

3072:BKSqXrJnWqbwOr+lzDxDziZ4JTxHy+VdiO0MP2d8ve2IYoJtz:lUrJnWqb6lHxDGyJo+XTP3vdi

Score

10^/10

gh0strat bootkit discovery persistence rat

Malware Config

Signatures

Gh0st RAT payload 1 IoCs

resource	yara_rule
behavioral1/files/0x0008000000016de6-12.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

Deletes itself 1 IoCs

pid	Process
2164	gjmevuhpbe

Executes dropped EXE 1 IoCs

pid	Process
2164	gjmevuhpbe

Loads dropped DLL 3 IoCs

pid	Process
2848	JaffaCakes118_441ec2644d74080aeedce16d3e1e00f9.exe
2848	JaffaCakes118_441ec2644d74080aeedce16d3e1e00f9.exe
2772	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 created	C:\Windows\SysWOW64\swujgyrrgc	svchost.exe
File created	C:\Windows\SysWOW64\sehskequhf	svchost.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\WinRAR\Formats\Date\F%SESSIONNAME%\sswnh.cc3	gjmevuhpbe

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_441ec2644d74080aeedce16d3e1e00f9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gjmevuhpbe
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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	svchost.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	svchost.exe

Modifies data under HKEY_USERS 6 IoCs

description	ioc	Process
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
Key created	\REGISTRY\USER\.DEFAULT\Software	svchost.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2164	gjmevuhpbe
2772	svchost.exe
2772	svchost.exe

Suspicious use of AdjustPrivilegeToken 18 IoCs

description	pid	Process
Token: SeRestorePrivilege	2164	gjmevuhpbe
Token: SeBackupPrivilege	2164	gjmevuhpbe
Token: SeBackupPrivilege	2164	gjmevuhpbe
Token: SeRestorePrivilege	2164	gjmevuhpbe
Token: SeBackupPrivilege	2772	svchost.exe
Token: SeRestorePrivilege	2772	svchost.exe
Token: SeBackupPrivilege	2772	svchost.exe
Token: SeBackupPrivilege	2772	svchost.exe
Token: SeSecurityPrivilege	2772	svchost.exe
Token: SeSecurityPrivilege	2772	svchost.exe
Token: SeBackupPrivilege	2772	svchost.exe
Token: SeBackupPrivilege	2772	svchost.exe
Token: SeSecurityPrivilege	2772	svchost.exe
Token: SeBackupPrivilege	2772	svchost.exe
Token: SeBackupPrivilege	2772	svchost.exe
Token: SeSecurityPrivilege	2772	svchost.exe
Token: SeBackupPrivilege	2772	svchost.exe
Token: SeRestorePrivilege	2772	svchost.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2848 wrote to memory of 2164	2848	JaffaCakes118_441ec2644d74080aeedce16d3e1e00f9.exe	31
PID 2848 wrote to memory of 2164	2848	JaffaCakes118_441ec2644d74080aeedce16d3e1e00f9.exe	31
PID 2848 wrote to memory of 2164	2848	JaffaCakes118_441ec2644d74080aeedce16d3e1e00f9.exe	31
PID 2848 wrote to memory of 2164	2848	JaffaCakes118_441ec2644d74080aeedce16d3e1e00f9.exe	31

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_441ec2644d74080aeedce16d3e1e00f9.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_441ec2644d74080aeedce16d3e1e00f9.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2848
- \??\c:\users\admin\appdata\local\gjmevuhpbe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_441ec2644d74080aeedce16d3e1e00f9.exe" a -sc:\users\admin\appdata\local\temp\jaffacakes118_441ec2644d74080aeedce16d3e1e00f9.exe
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2164

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k netsvcs
1⤵
- Loads dropped DLL
- Writes to the Master Boot Record (MBR)
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2772

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

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

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

\Program Files (x86)\WinRAR\Formats\Date\F%SESSIONNAME%\sswnh.cc3

Filesize
22.1MB

MD5
be300e5a98ffeaf149c9e7ca2d369047

SHA1
82b303b681757e97e0169efc3f44a41bc11c028f

SHA256
75d045be57f06e809b3f9ba20979b73b942a12d3ae9d45ab60395b5eab3c283d

SHA512
e589205397de7c42585f121bcfab2f2630cf95f6b9c29be3381ab1b3791d63dd977d31c90edb5ad91407a54e2a4ad27785a138ca38df98352385d19be9365ab1

Download Submit
\Users\Admin\AppData\Local\gjmevuhpbe

Filesize
25.8MB

MD5
230b89cd749ef5e039c83d426171725a

SHA1
629fa8a3db91a0cb63a1e0a0c72e7e43725b6eeb

SHA256
08e14ed0be4fee5c73ee0dae857e9b51142312dcaa85d76f510a02b4cabb0969

SHA512
59775d3214655ca5eb0b9154f1fba00b1f196994a425551f390717b8b8a67e6f6e4ac40acd542068e91a1f81e78e581b02ab343b310b13f5194aa15af014552e

Download Submit
memory/2772-13-0x00000000001F0000-0x00000000001F1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads