gh0strat | 4d827b4a120d42bbf83cd0a50e410dc4ab5a3eb77c70ef6a3942506f4c7b96b4

General

Target

JaffaCakes118_57cd8022ba25ee229e954ff879a85b0e.exe
Size

89KB
MD5

57cd8022ba25ee229e954ff879a85b0e
SHA1

3a1e1183457cefbe6a9d8067d7213c939b79aa5c
SHA256

4d827b4a120d42bbf83cd0a50e410dc4ab5a3eb77c70ef6a3942506f4c7b96b4
SHA512

e9a1a1c3461258a12d888f4079c046fe7ba606e1fba5e806ccda98366bc3260f7e5390fb089494b06eed8302eda3feb7205afaad3b3c2ab8554c8c8c97e552ab
SSDEEP

1536:RUi+PinPOLRApoqNsHtTZtQrZq6phxTVoDcgIzl7MQpGtKNx3sXzwQaDl99:/nmL2pUHxZtUZvRTCDcL7MQpCYplV

Score

10^/10

gh0strat bootkit discovery persistence rat

Malware Config

Signatures

Gh0st RAT payload 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000016479-16.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

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\\ntfastuserswitchingcompatibility.dll"	ope7927.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-925314154-1797147466-1467878628-1000\Control Panel\International\Geo\Nation	JaffaCakes118_57cd8022ba25ee229e954ff879a85b0e.exe

Executes dropped EXE 1 IoCs

pid	Process
892	ope7927.exe

Loads dropped DLL 1 IoCs

pid	Process
1452	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 opened for modification	C:\Windows\SysWOW64\ntfastuserswitchingcompatibility.dll	ope7927.exe
File opened for modification	C:\Windows\SysWOW64\d2f5ca0e.del	ope7927.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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_57cd8022ba25ee229e954ff879a85b0e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ope7927.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 5 IoCs

description	ioc	Process
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 2 IoCs

pid	Process
892	ope7927.exe
892	ope7927.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeBackupPrivilege	1452	svchost.exe
Token: SeSecurityPrivilege	1452	svchost.exe
Token: SeSecurityPrivilege	1452	svchost.exe
Token: SeBackupPrivilege	1452	svchost.exe
Token: SeSecurityPrivilege	1452	svchost.exe
Token: SeBackupPrivilege	1452	svchost.exe
Token: SeSecurityPrivilege	1452	svchost.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1916 wrote to memory of 892	1916	JaffaCakes118_57cd8022ba25ee229e954ff879a85b0e.exe	85
PID 1916 wrote to memory of 892	1916	JaffaCakes118_57cd8022ba25ee229e954ff879a85b0e.exe	85
PID 1916 wrote to memory of 892	1916	JaffaCakes118_57cd8022ba25ee229e954ff879a85b0e.exe	85

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_57cd8022ba25ee229e954ff879a85b0e.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_57cd8022ba25ee229e954ff879a85b0e.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1916
- C:\Users\Admin\AppData\Local\Temp\ope7927.exe
  "C:\Users\Admin\AppData\Local\Temp\ope7927.exe"
  2⤵
  - Server Software Component: Terminal Services DLL
  - Executes dropped EXE
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:892

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k netsvcs -s fastuserswitchingcompatibility
1⤵
- Loads dropped DLL
- Writes to the Master Boot Record (MBR)
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
PID:1452

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

2

T1012

System Information Discovery

3

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\ope7927.exe

Filesize
184KB

MD5
66210006930bc0fe2e8c5b11ea84857c

SHA1
52298071235b68103ce8d06e8925992653b7cbe9

SHA256
939642db03fb0e0ba34e2f43c65b64d714ba922a98f8950e063ef9f810603dfc

SHA512
a672887d26472e1db3f16ea31a10c0d519b15ab62469663ab9134733b75a078d209d270123dd17d1a177d221cd0fae6c364311b27d30f5e6545352d96ba296e6

Download Submit
\??\c:\windows\SysWOW64\ntfastuserswitchingcompatibility.dll

Filesize
148KB

MD5
f9dc6833cd375c9f7f99b0785ba15a71

SHA1
497cbb8be2c496f4aa613efae129d14a421892a6

SHA256
f187913edecaffa00d865ea2938b5613bed9768543ebdbde4672050e9c12bd2a

SHA512
f29febe495688863c9305a0499b53bf12501a6f074549414c8b21c6a9a44185e14f21bb3cc0ca1f14a99c6efdc4c48eab8a6ab54c89c2defb9d5e3a553171f77

Download Submit
memory/1916-0-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/1916-13-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads