gh0strat | 9b5f61c1e79d525b2ac6c9c286927b7b6c2ff7fd492561fa9be5193b8a1693a5

General

Target

JaffaCakes118_61e1638fbe2c097bc3904c37c7fbda73.exe
Size

192KB
MD5

61e1638fbe2c097bc3904c37c7fbda73
SHA1

fe6a487cdef92c1dedc5324f710efc3bcb423ef8
SHA256

9b5f61c1e79d525b2ac6c9c286927b7b6c2ff7fd492561fa9be5193b8a1693a5
SHA512

29b3e1ce47f3427a09f2c28678b78f733f7e8ad8a740adf09e3198d84b9db3126103f18c06c97bb403ed6644759d5176730a5800882edb33da0ff07353a90e0b
SSDEEP

3072:3krAnW9c1myF/O7qBBwer9xdqzdgdD5rlNnQETx7cB5I7X2m6mel:UrAnW9cb62w+WQnhlcB5I7mm

Score

10^/10

gh0strat bootkit discovery persistence rat

Malware Config

Signatures

Gh0st RAT payload 2 IoCs

resource	yara_rule
behavioral1/files/0x001400000001937b-13.dat	family_gh0strat
behavioral1/memory/2560-15-0x0000000020000000-0x0000000020027000-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
Gh0strat family
gh0strat

Deletes itself 1 IoCs

pid	Process
2760	hhgxqx

Executes dropped EXE 1 IoCs

pid	Process
2760	hhgxqx

Loads dropped DLL 2 IoCs

pid	Process
2660	JaffaCakes118_61e1638fbe2c097bc3904c37c7fbda73.exe
2560	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 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\kvbgumarkc	svchost.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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_61e1638fbe2c097bc3904c37c7fbda73.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	hhgxqx

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	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 4 IoCs

pid	Process
2560	svchost.exe
2560	svchost.exe
2560	svchost.exe
2560	svchost.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2660	JaffaCakes118_61e1638fbe2c097bc3904c37c7fbda73.exe

Suspicious use of AdjustPrivilegeToken 22 IoCs

description	pid	Process
Token: SeBackupPrivilege	2760	hhgxqx
Token: SeRestorePrivilege	2760	hhgxqx
Token: SeBackupPrivilege	2760	hhgxqx
Token: SeRestorePrivilege	2760	hhgxqx
Token: SeBackupPrivilege	2760	hhgxqx
Token: SeRestorePrivilege	2760	hhgxqx
Token: SeBackupPrivilege	2760	hhgxqx
Token: SeRestorePrivilege	2760	hhgxqx
Token: SeBackupPrivilege	2560	svchost.exe
Token: SeRestorePrivilege	2560	svchost.exe
Token: SeBackupPrivilege	2560	svchost.exe
Token: SeBackupPrivilege	2560	svchost.exe
Token: SeSecurityPrivilege	2560	svchost.exe
Token: SeSecurityPrivilege	2560	svchost.exe
Token: SeBackupPrivilege	2560	svchost.exe
Token: SeBackupPrivilege	2560	svchost.exe
Token: SeSecurityPrivilege	2560	svchost.exe
Token: SeBackupPrivilege	2560	svchost.exe
Token: SeBackupPrivilege	2560	svchost.exe
Token: SeSecurityPrivilege	2560	svchost.exe
Token: SeBackupPrivilege	2560	svchost.exe
Token: SeRestorePrivilege	2560	svchost.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2660 wrote to memory of 2760	2660	JaffaCakes118_61e1638fbe2c097bc3904c37c7fbda73.exe	31
PID 2660 wrote to memory of 2760	2660	JaffaCakes118_61e1638fbe2c097bc3904c37c7fbda73.exe	31
PID 2660 wrote to memory of 2760	2660	JaffaCakes118_61e1638fbe2c097bc3904c37c7fbda73.exe	31
PID 2660 wrote to memory of 2760	2660	JaffaCakes118_61e1638fbe2c097bc3904c37c7fbda73.exe	31
PID 2660 wrote to memory of 2760	2660	JaffaCakes118_61e1638fbe2c097bc3904c37c7fbda73.exe	31
PID 2660 wrote to memory of 2760	2660	JaffaCakes118_61e1638fbe2c097bc3904c37c7fbda73.exe	31
PID 2660 wrote to memory of 2760	2660	JaffaCakes118_61e1638fbe2c097bc3904c37c7fbda73.exe	31

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_61e1638fbe2c097bc3904c37c7fbda73.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_61e1638fbe2c097bc3904c37c7fbda73.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:2660
- \??\c:\users\admin\appdata\local\temp\hhgxqx
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_61e1638fbe2c097bc3904c37c7fbda73.exe"a -s
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2760

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:2560

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

\??\c:\users\admin\appdata\local\temp\hhgxqx

Filesize
192KB

MD5
90125be380076670431b84572061f824

SHA1
5b7dd8a0b1890c5929a3e92376306ed682830ae8

SHA256
6287784582400a98b8c2e29e539548ac72c1b5976c147b205c7d317e09a480d0

SHA512
716975109763bf9f72fc54495458dd89a8703349c422d7a2c719593ab804118937d198bbd9e9a3aa7f6ae2add60e73b962714a6b826a75a62417c6cbc7062235

Download Submit
\??\c:\users\admin\application data\%sessionname%\hptch.ccd

Filesize
3.3MB

MD5
ff0c2bb47465886c91048ad0ab075db9

SHA1
6240c4ca45b87cf29d305327ba22b22fd4ce09ba

SHA256
2e17907ad99d2e558bcf16084b9f1e485e3a0396fcfdcadbd1fa695a1286dc1a

SHA512
40e5e37dca05ec75218f6cfb6987599326ad20b622ef560f5bc570cf1238f66225e090f4ed84079e70a7c7613afc4b80a962900e23ce1e0f60aeaf85403c4a1b

Download Submit
memory/2560-15-0x0000000020000000-0x0000000020027000-memory.dmp

Filesize
156KB

Download
memory/2660-6-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads