gh0strat | 7caa895701bae8fadd55156512b9a556ab6d594264c951131fbbf915ddc7ec89

General

Target

JaffaCakes118_3c64bb2a8435a649ad2ca869d94c74e5.exe
Size

96KB
MD5

3c64bb2a8435a649ad2ca869d94c74e5
SHA1

28d96750de096fad633ac17c89d6954620797387
SHA256

7caa895701bae8fadd55156512b9a556ab6d594264c951131fbbf915ddc7ec89
SHA512

8dc5613647152c0cfdce9608e8a8d4e2058b34ae29e6a566f3c71b9c6b62e5337420c48134990336d0a1210b430fd196e2082858411f16565e1cc6803b292454
SSDEEP

1536:HkFusSx9qYMhdFHS8qdydo3nTzhYxJA+CwNUtBZVY9v8prQhf3MY:HWS4jHS8q/3nTzePCwNUh4E9g3MY

Score

10^/10

gh0strat bootkit discovery persistence rat

Malware Config

Signatures

Gh0st RAT payload 2 IoCs

resource	yara_rule
behavioral1/files/0x0008000000016d46-18.dat	family_gh0strat
behavioral1/memory/2364-20-0x0000000000400000-0x000000000044E31C-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
2364	gcfgsbyggw

Executes dropped EXE 1 IoCs

pid	Process
2364	gcfgsbyggw

Loads dropped DLL 2 IoCs

pid	Process
3020	JaffaCakes118_3c64bb2a8435a649ad2ca869d94c74e5.exe
2760	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\lnbvtwlnnl	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	JaffaCakes118_3c64bb2a8435a649ad2ca869d94c74e5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gcfgsbyggw
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 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
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
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\ActiveMovie\devenum	svchost.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2364	gcfgsbyggw
2760	svchost.exe
2760	svchost.exe

Suspicious use of AdjustPrivilegeToken 18 IoCs

description	pid	Process
Token: SeRestorePrivilege	2364	gcfgsbyggw
Token: SeBackupPrivilege	2364	gcfgsbyggw
Token: SeBackupPrivilege	2364	gcfgsbyggw
Token: SeRestorePrivilege	2364	gcfgsbyggw
Token: SeBackupPrivilege	2760	svchost.exe
Token: SeRestorePrivilege	2760	svchost.exe
Token: SeBackupPrivilege	2760	svchost.exe
Token: SeBackupPrivilege	2760	svchost.exe
Token: SeSecurityPrivilege	2760	svchost.exe
Token: SeSecurityPrivilege	2760	svchost.exe
Token: SeBackupPrivilege	2760	svchost.exe
Token: SeBackupPrivilege	2760	svchost.exe
Token: SeSecurityPrivilege	2760	svchost.exe
Token: SeBackupPrivilege	2760	svchost.exe
Token: SeBackupPrivilege	2760	svchost.exe
Token: SeSecurityPrivilege	2760	svchost.exe
Token: SeBackupPrivilege	2760	svchost.exe
Token: SeRestorePrivilege	2760	svchost.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3020 wrote to memory of 2364	3020	JaffaCakes118_3c64bb2a8435a649ad2ca869d94c74e5.exe	30
PID 3020 wrote to memory of 2364	3020	JaffaCakes118_3c64bb2a8435a649ad2ca869d94c74e5.exe	30
PID 3020 wrote to memory of 2364	3020	JaffaCakes118_3c64bb2a8435a649ad2ca869d94c74e5.exe	30
PID 3020 wrote to memory of 2364	3020	JaffaCakes118_3c64bb2a8435a649ad2ca869d94c74e5.exe	30
PID 3020 wrote to memory of 2364	3020	JaffaCakes118_3c64bb2a8435a649ad2ca869d94c74e5.exe	30
PID 3020 wrote to memory of 2364	3020	JaffaCakes118_3c64bb2a8435a649ad2ca869d94c74e5.exe	30
PID 3020 wrote to memory of 2364	3020	JaffaCakes118_3c64bb2a8435a649ad2ca869d94c74e5.exe	30

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3c64bb2a8435a649ad2ca869d94c74e5.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3c64bb2a8435a649ad2ca869d94c74e5.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3020
- \??\c:\users\admin\appdata\local\gcfgsbyggw
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3c64bb2a8435a649ad2ca869d94c74e5.exe" a -sc:\users\admin\appdata\local\temp\jaffacakes118_3c64bb2a8435a649ad2ca869d94c74e5.exe
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2364

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:2760

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:\programdata\application data\storm\update\%sessionname%\tlnrx.cc3

Filesize
19.1MB

MD5
018b3467a6047cebffb5c410b7f3b227

SHA1
1c4e564708a4822cd104500c5837a23084f5f83a

SHA256
36e2819a499c49dc15bc1a54fead443882584e3a0dcf048abe70a00b96811e06

SHA512
622f2ca1b3b6fe03bc8d769cc90019c56e2f5f37396f23f991b63e9c93ecbe148c851e05d31951e1b41565dd1e9a98241d4511ef639381ee2c880e710bcdf763

Download Submit
\Users\Admin\AppData\Local\gcfgsbyggw

Filesize
19.7MB

MD5
ee108be652a4570a6ee548534991c269

SHA1
09d5343d9543795a1e5afa75ac51aa14cb3de54c

SHA256
1a7957ecb643b07ab2221487fe1602cc66c49621908bb55e4786cacd7c5a18ee

SHA512
f1411485aa0a591d884b0670e1e0be3efe94ed89adae691bc58d987fde749ac9fecf459053551bc0de90d6c21775d33c03f0e607066759c0e8b44fbf9b85ff29

Download Submit
memory/2364-13-0x0000000000400000-0x000000000044E31C-memory.dmp

Filesize
312KB

Download
memory/2364-15-0x0000000000250000-0x0000000000251000-memory.dmp

Filesize
4KB

Download
memory/2364-20-0x0000000000400000-0x000000000044E31C-memory.dmp

Filesize
312KB

Download
memory/2760-21-0x0000000000140000-0x0000000000141000-memory.dmp

Filesize
4KB

Download
memory/3020-0-0x0000000000400000-0x000000000044E31C-memory.dmp

Filesize
312KB

Download
memory/3020-2-0x00000000001C0000-0x000000000020F000-memory.dmp

Filesize
316KB

Download
memory/3020-1-0x00000000001C0000-0x000000000020F000-memory.dmp

Filesize
316KB

Download
memory/3020-8-0x0000000000290000-0x00000000002DF000-memory.dmp

Filesize
316KB

Download
memory/3020-12-0x0000000000400000-0x000000000044E31C-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads