gh0strat | 85fea50dd40e461a888ccb7886eb5a31cf393b68179b68d31eaaf3e3a794a5ff

General

Target

JaffaCakes118_451c3a5d7708239831eb952bd151ac90.exe
Size

136KB
MD5

451c3a5d7708239831eb952bd151ac90
SHA1

276b91fb2c751aa7f585c0a3a5f0d8bdb899ae3f
SHA256

85fea50dd40e461a888ccb7886eb5a31cf393b68179b68d31eaaf3e3a794a5ff
SHA512

baf9a0ca4cd5fbac544bf6beaca5faa1ef9d1566aec7b4b5e3106fc210ea2f578463323e1d4acee50bf680c0ea81786fea743e628a35f3fcdc4e53a5b0aeef18
SSDEEP

3072:VNyzYMiOcQNLeUP12gewrzkPYewjIBytVWRW0+JDej1Ai54gpGK:zEiJ5c0gTIYewj2wVPDi/kK

Score

10^/10

gh0strat bootkit discovery persistence rat vmprotect

Malware Config

Signatures

Gh0st RAT payload 6 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023d14-3.dat	family_gh0strat
behavioral2/memory/1640-5-0x0000000010000000-0x0000000010028000-memory.dmp	family_gh0strat
behavioral2/memory/4844-6-0x0000000000400000-0x0000000000454000-memory.dmp	family_gh0strat
behavioral2/memory/1640-7-0x0000000010000000-0x0000000010028000-memory.dmp	family_gh0strat
behavioral2/memory/1640-8-0x0000000010000000-0x0000000010028000-memory.dmp	family_gh0strat
behavioral2/memory/1640-13-0x0000000010000000-0x0000000010028000-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

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:\\PROGRA~3\\DRM\\hersa.ref"	JaffaCakes118_451c3a5d7708239831eb952bd151ac90.exe

Deletes itself 1 IoCs

pid	Process
1640	svchost.exe

Loads dropped DLL 1 IoCs

pid	Process
1640	svchost.exe

VMProtect packed file 2 IoCs

Detects executables packed with VMProtect commercial packer.

vmprotect

resource	yara_rule
behavioral2/memory/4844-0-0x0000000000400000-0x0000000000454000-memory.dmp	vmprotect
behavioral2/memory/4844-6-0x0000000000400000-0x0000000000454000-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 5 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	svchost.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	svchost.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	svchost.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	svchost.exe
File opened for modification	C:\Windows\SysWOW64\d2f5ca0e.del	JaffaCakes118_451c3a5d7708239831eb952bd151ac90.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\PROGRA~3\DRM\hersa.ref	JaffaCakes118_451c3a5d7708239831eb952bd151ac90.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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_451c3a5d7708239831eb952bd151ac90.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 13 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie	svchost.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	svchost.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	svchost.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	svchost.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	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
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum\Version = "7"	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	svchost.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	svchost.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	svchost.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	svchost.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4844	JaffaCakes118_451c3a5d7708239831eb952bd151ac90.exe
4844	JaffaCakes118_451c3a5d7708239831eb952bd151ac90.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeBackupPrivilege	1640	svchost.exe
Token: SeSecurityPrivilege	1640	svchost.exe
Token: SeSecurityPrivilege	1640	svchost.exe
Token: SeBackupPrivilege	1640	svchost.exe
Token: SeSecurityPrivilege	1640	svchost.exe
Token: SeBackupPrivilege	1640	svchost.exe
Token: SeSecurityPrivilege	1640	svchost.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_451c3a5d7708239831eb952bd151ac90.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_451c3a5d7708239831eb952bd151ac90.exe"
1⤵
- Server Software Component: Terminal Services DLL
- Drops file in System32 directory
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:4844

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k netsvcs -s fastuserswitchingcompatibility
1⤵
- Deletes itself
- 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 use of AdjustPrivilegeToken
PID:1640

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Server Software Component

1

T1505

Terminal Services DLL

1

T1505.005

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:\progra~3\drm\hersa.ref

Filesize
153KB

MD5
676879c179df8f0df3a9f0165fabfdd9

SHA1
ecd7c949334f0a823fd90f72fc9404669215efd1

SHA256
3ecc4935a8ae8110931c55dedf43fb443e90e3a5f497b1ee1a65a7b8fe73a8d3

SHA512
be680977d556f553c6f4ac6d9deb35e01dbe850a5dc4c97a2aea82ab99d686e2353861708b0a06c63f7a258e66f32ef30f25db1c499e16b45547115bcb6f17d9

Download Submit
memory/1640-5-0x0000000010000000-0x0000000010028000-memory.dmp

Filesize
160KB

Download
memory/1640-7-0x0000000010000000-0x0000000010028000-memory.dmp

Filesize
160KB

Download
memory/1640-8-0x0000000010000000-0x0000000010028000-memory.dmp

Filesize
160KB

Download
memory/1640-13-0x0000000010000000-0x0000000010028000-memory.dmp

Filesize
160KB

Download
memory/4844-0-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4844-6-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads