gh0strat | c8ef4512d6bebc14a986159f8c41eef9267ac1cd6c3e77df238b563414da5be1

General

Target

JaffaCakes118_638e26cc68adb93795cf75d26b8fcd53.exe
Size

228KB
MD5

638e26cc68adb93795cf75d26b8fcd53
SHA1

f96888eda1ded4ad93d395fd43f9daa4b21bd43d
SHA256

c8ef4512d6bebc14a986159f8c41eef9267ac1cd6c3e77df238b563414da5be1
SHA512

2ed4f5874c3a8ef53b36c3c426ed30121f075c3a95a1f2ec4124a7f554c8ee9f2ed7eade05d81963da4925f54bd99e15e379e2fe6336c790ef510a9923a6675a
SSDEEP

6144:Y/vT6WtCB/Wwt+jbppyu4Us8V9dgl9d4M1eKh:cb6/rmlh8y

Score

10^/10

gh0strat bootkit discovery persistence rat

Malware Config

Signatures

Gh0st RAT payload 2 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023bb2-3.dat	family_gh0strat
behavioral2/memory/2760-8-0x0000000000400000-0x000000000043B468-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 2 IoCs

persistence

Terminal Services DLL

T1505.005

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\fastuserswitchingcompatibility\Parameters\ServiceDll = "C:\\Windows\\system32\\xxxx.scr"	JaffaCakes118_638e26cc68adb93795cf75d26b8fcd53.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\hohguj\Parameters\ServiceDll = "C:\\Windows\\system32\\xxxx.scrl"	JaffaCakes118_638e26cc68adb93795cf75d26b8fcd53.exe

Deletes itself 1 IoCs

pid	Process
2196	SVCHOST.EXE

Loads dropped DLL 2 IoCs

pid	Process
2196	SVCHOST.EXE
1440	SVCHOST.EXE

Writes to the Master Boot Record (MBR) 1 TTPs 2 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
File opened for modification	\??\PhysicalDrive0	SVCHOST.EXE

Drops file in System32 directory 15 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\cbdb394.del	JaffaCakes118_638e26cc68adb93795cf75d26b8fcd53.exe
File opened for modification	C:\Windows\SysWOW64\SVCHOST.EXE.txt	SVCHOST.EXE
File opened for modification	C:\Windows\SysWOW64\xxxx.scr	JaffaCakes118_638e26cc68adb93795cf75d26b8fcd53.exe
File opened for modification	C:\Windows\SysWOW64\85b0df75.del	JaffaCakes118_638e26cc68adb93795cf75d26b8fcd53.exe
File opened for modification	C:\Windows\SysWOW64\975a113f.del	JaffaCakes118_638e26cc68adb93795cf75d26b8fcd53.exe
File opened for modification	C:\Windows\SysWOW64\41696d32.del	JaffaCakes118_638e26cc68adb93795cf75d26b8fcd53.exe
File opened for modification	C:\Windows\SysWOW64\4bc0880b.del	JaffaCakes118_638e26cc68adb93795cf75d26b8fcd53.exe
File opened for modification	C:\Windows\SysWOW64\SVCHOST.EXE.txt	SVCHOST.EXE
File opened for modification	C:\Windows\SysWOW64\7992a0d7.del	JaffaCakes118_638e26cc68adb93795cf75d26b8fcd53.exe
File opened for modification	C:\Windows\SysWOW64\90671dab.del	JaffaCakes118_638e26cc68adb93795cf75d26b8fcd53.exe
File opened for modification	C:\Windows\SysWOW64\9450a8ee.del	JaffaCakes118_638e26cc68adb93795cf75d26b8fcd53.exe
File opened for modification	C:\Windows\SysWOW64\7b04016c.del	JaffaCakes118_638e26cc68adb93795cf75d26b8fcd53.exe
File opened for modification	C:\Windows\SysWOW64\148af8cb.del	JaffaCakes118_638e26cc68adb93795cf75d26b8fcd53.exe
File opened for modification	C:\Windows\SysWOW64\c5115d9e.del	JaffaCakes118_638e26cc68adb93795cf75d26b8fcd53.exe
File opened for modification	C:\Windows\SysWOW64\c76910fd.del	JaffaCakes118_638e26cc68adb93795cf75d26b8fcd53.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	SVCHOST.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_638e26cc68adb93795cf75d26b8fcd53.exe

Checks processor information in registry 2 TTPs 4 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
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
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
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum\Version = "7"	SVCHOST.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2760	JaffaCakes118_638e26cc68adb93795cf75d26b8fcd53.exe
2760	JaffaCakes118_638e26cc68adb93795cf75d26b8fcd53.exe

Suspicious use of AdjustPrivilegeToken 14 IoCs

description	pid	Process
Token: SeBackupPrivilege	2196	SVCHOST.EXE
Token: SeSecurityPrivilege	2196	SVCHOST.EXE
Token: SeSecurityPrivilege	2196	SVCHOST.EXE
Token: SeBackupPrivilege	2196	SVCHOST.EXE
Token: SeSecurityPrivilege	2196	SVCHOST.EXE
Token: SeBackupPrivilege	2196	SVCHOST.EXE
Token: SeSecurityPrivilege	2196	SVCHOST.EXE
Token: SeBackupPrivilege	1440	SVCHOST.EXE
Token: SeSecurityPrivilege	1440	SVCHOST.EXE
Token: SeSecurityPrivilege	1440	SVCHOST.EXE
Token: SeBackupPrivilege	1440	SVCHOST.EXE
Token: SeSecurityPrivilege	1440	SVCHOST.EXE
Token: SeBackupPrivilege	1440	SVCHOST.EXE
Token: SeSecurityPrivilege	1440	SVCHOST.EXE

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_638e26cc68adb93795cf75d26b8fcd53.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_638e26cc68adb93795cf75d26b8fcd53.exe"
1⤵
- Server Software Component: Terminal Services DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:2760

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:2196

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
- Suspicious use of AdjustPrivilegeToken
PID:1440

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:\Windows\SysWOW64\SVCHOST.EXE.txt

Filesize
869B

MD5
2f850836c1912e1ed70457671adae148

SHA1
9924679cb0ac93f22ac9a38802fd5c6d109d5df4

SHA256
3fd2e8bba28520b15b955821080660a02d38f6c05471155b9131399cea068866

SHA512
c7bafe9be77df59ac456a13354ab049d9b1f2d04a8d2e187175f6daba096648068a865f117a14d74fe5fe3482809746ade1946cfc8fe8715f5a8a5fdcc57a3af

Download Submit
\??\c:\windows\SysWOW64\xxxx.scr

Filesize
152KB

MD5
557a203034c90b96b7f252e66630932b

SHA1
580c47365230185be67515dc9804754e5a4958aa

SHA256
8cd7155859f4fce9bf45fc6abc78336dde3a81a190c054ff173770ea990e07bd

SHA512
ef124e3fb42bac102d4fe6a625132d9882a35d15ae1356ed27b20cdc864a518cddd5b5079b8c9e31c2a2d8b86599b5988effdccf5f722d9dbdd91691d28cc1fc

Download Submit
memory/2760-0-0x0000000000400000-0x000000000043B468-memory.dmp

Filesize
237KB

Download
memory/2760-8-0x0000000000400000-0x000000000043B468-memory.dmp

Filesize
237KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads