gh0strat | 3393d0c0410fbdbad107a362dffc97c7b67682e6e2d257aa82835a685658b34e

General

Target

JaffaCakes118_63ab43ccaaaf369951e14507dd5faca8.exe
Size

95KB
MD5

63ab43ccaaaf369951e14507dd5faca8
SHA1

3ced0f9243d8544ebe450a5087f22875d06c516c
SHA256

3393d0c0410fbdbad107a362dffc97c7b67682e6e2d257aa82835a685658b34e
SHA512

757df7c39578725a73a0970cb81a2766d3dc9d528922690f4adbc87e0c91c4e64f3d71fca4a10e7c9de17aa6cb68959d8cf3bd7e541688e6df1847e62f70a53c
SSDEEP

1536:boJFusSx9qYMhdFHS8qdydo3nTzhYxJA+CwNUtBZVY9v8prV7g8n+iOQ:bofS4jHS8q/3nTzePCwNUh4E9hgViOQ

Score

10^/10

gh0strat bootkit discovery persistence rat

Malware Config

Signatures

Gh0st RAT payload 2 IoCs

resource	yara_rule
behavioral1/files/0x00090000000174a6-21.dat	family_gh0strat
behavioral1/memory/2560-22-0x0000000000400000-0x000000000044C60F-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
2560	ekgybwnkiy

Executes dropped EXE 1 IoCs

pid	Process
2560	ekgybwnkiy

Loads dropped DLL 3 IoCs

pid	Process
1560	JaffaCakes118_63ab43ccaaaf369951e14507dd5faca8.exe
1560	JaffaCakes118_63ab43ccaaaf369951e14507dd5faca8.exe
2552	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\ykogeqgjoh	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	ekgybwnkiy
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_63ab43ccaaaf369951e14507dd5faca8.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\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
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

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2560	ekgybwnkiy
2552	svchost.exe
2552	svchost.exe
2552	svchost.exe

Suspicious use of AdjustPrivilegeToken 18 IoCs

description	pid	Process
Token: SeRestorePrivilege	2560	ekgybwnkiy
Token: SeBackupPrivilege	2560	ekgybwnkiy
Token: SeBackupPrivilege	2560	ekgybwnkiy
Token: SeRestorePrivilege	2560	ekgybwnkiy
Token: SeBackupPrivilege	2552	svchost.exe
Token: SeRestorePrivilege	2552	svchost.exe
Token: SeBackupPrivilege	2552	svchost.exe
Token: SeBackupPrivilege	2552	svchost.exe
Token: SeSecurityPrivilege	2552	svchost.exe
Token: SeSecurityPrivilege	2552	svchost.exe
Token: SeBackupPrivilege	2552	svchost.exe
Token: SeBackupPrivilege	2552	svchost.exe
Token: SeSecurityPrivilege	2552	svchost.exe
Token: SeBackupPrivilege	2552	svchost.exe
Token: SeBackupPrivilege	2552	svchost.exe
Token: SeSecurityPrivilege	2552	svchost.exe
Token: SeBackupPrivilege	2552	svchost.exe
Token: SeRestorePrivilege	2552	svchost.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1560 wrote to memory of 2560	1560	JaffaCakes118_63ab43ccaaaf369951e14507dd5faca8.exe	29
PID 1560 wrote to memory of 2560	1560	JaffaCakes118_63ab43ccaaaf369951e14507dd5faca8.exe	29
PID 1560 wrote to memory of 2560	1560	JaffaCakes118_63ab43ccaaaf369951e14507dd5faca8.exe	29
PID 1560 wrote to memory of 2560	1560	JaffaCakes118_63ab43ccaaaf369951e14507dd5faca8.exe	29

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_63ab43ccaaaf369951e14507dd5faca8.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_63ab43ccaaaf369951e14507dd5faca8.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1560
- \??\c:\users\admin\appdata\local\ekgybwnkiy
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_63ab43ccaaaf369951e14507dd5faca8.exe" a -sc:\users\admin\appdata\local\temp\jaffacakes118_63ab43ccaaaf369951e14507dd5faca8.exe
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2560

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:2552

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\ekgybwnkiy

Filesize
19.8MB

MD5
ff1c6ab58efcbb2c4b918b6febe8e0ed

SHA1
e785a4343ed6bb188361dd35cb4c03bef447c1ca

SHA256
32987fc5179b88358b79d4a3c302bf0694ca1e0241ca3a5f191f0dd3d70d27a5

SHA512
3b359419d7179bafa3e8ac9fb7e29a10bf41739c010cbfebc88dc11dfeabb782a7fb9d6c1daf1714a70e4a69325f38a58973f402a5e815c0e2ac57e53d7260f8

Download Submit
\ProgramData\Storm\update\%SESSIONNAME%\eovke.cc3

Filesize
23.0MB

MD5
2537f2caba7389cfd261b0b4398506e9

SHA1
6643c51bc98f32e340c6c296a9a32601c9b9c2e5

SHA256
9d0b557c89c136fda35d2dbe79f5270b6e3e9dba2c79f28afdc030d499cbea2a

SHA512
1360f0b70e37a154cca0528d93f9f73cdca52a5f17ffa3515ac8ec789608861940e20d079894824ba35443cabfcbc830cb9ca0a15e7291118e8332775af335c9

Download Submit
memory/1560-13-0x0000000000400000-0x000000000044C60F-memory.dmp

Filesize
305KB

Download
memory/1560-6-0x00000000003B0000-0x00000000003FD000-memory.dmp

Filesize
308KB

Download
memory/1560-2-0x0000000000030000-0x0000000000031000-memory.dmp

Filesize
4KB

Download
memory/1560-1-0x0000000000400000-0x000000000044C60F-memory.dmp

Filesize
305KB

Download
memory/2552-23-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/2560-17-0x0000000000030000-0x0000000000031000-memory.dmp

Filesize
4KB

Download
memory/2560-15-0x0000000000400000-0x000000000044C60F-memory.dmp

Filesize
305KB

Download
memory/2560-22-0x0000000000400000-0x000000000044C60F-memory.dmp

Filesize
305KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads