gh0strat | 51fba53e2918547dac0a7c4f542ca0aec58343a607fad613f2cb749334e86fa9

General

Target

JaffaCakes118_4bdc271e491cc879bd8db4913fc9872a.exe
Size

95KB
MD5

4bdc271e491cc879bd8db4913fc9872a
SHA1

c2c56565c9c1bc2e39407d5da4987c275fe7d5b4
SHA256

51fba53e2918547dac0a7c4f542ca0aec58343a607fad613f2cb749334e86fa9
SHA512

4c4286f6abeda9aa95a484e2b0d8a2bb514fd7e6c5249b20a493075e710ea36caef1dbb9dd079d7100fb1a3b674d3bd991e1501f3d76ea85608d6515d7e8685b
SSDEEP

1536:PrFusSx9qYMhdFHS8qdydo3nTzhYxJA+CwNUtBZVY9v8prgDxxOrL:PFS4jHS8q/3nTzePCwNUh4E9gDxwrL

Score

10^/10

gh0strat bootkit discovery persistence rat

Malware Config

Signatures

Gh0st RAT payload 2 IoCs

resource	yara_rule
behavioral1/files/0x00080000000186c8-17.dat	family_gh0strat
behavioral1/memory/2444-19-0x0000000000400000-0x000000000044E2FC-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
2444	fgypbtcdem

Executes dropped EXE 1 IoCs

pid	Process
2444	fgypbtcdem

Loads dropped DLL 2 IoCs

pid	Process
1576	JaffaCakes118_4bdc271e491cc879bd8db4913fc9872a.exe
3060	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\gxihtxolau	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_4bdc271e491cc879bd8db4913fc9872a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fgypbtcdem
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 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 3 IoCs

pid	Process
2444	fgypbtcdem
3060	svchost.exe
3060	svchost.exe

Suspicious use of AdjustPrivilegeToken 18 IoCs

description	pid	Process
Token: SeRestorePrivilege	2444	fgypbtcdem
Token: SeBackupPrivilege	2444	fgypbtcdem
Token: SeBackupPrivilege	2444	fgypbtcdem
Token: SeRestorePrivilege	2444	fgypbtcdem
Token: SeBackupPrivilege	3060	svchost.exe
Token: SeRestorePrivilege	3060	svchost.exe
Token: SeBackupPrivilege	3060	svchost.exe
Token: SeBackupPrivilege	3060	svchost.exe
Token: SeSecurityPrivilege	3060	svchost.exe
Token: SeSecurityPrivilege	3060	svchost.exe
Token: SeBackupPrivilege	3060	svchost.exe
Token: SeBackupPrivilege	3060	svchost.exe
Token: SeSecurityPrivilege	3060	svchost.exe
Token: SeBackupPrivilege	3060	svchost.exe
Token: SeBackupPrivilege	3060	svchost.exe
Token: SeSecurityPrivilege	3060	svchost.exe
Token: SeBackupPrivilege	3060	svchost.exe
Token: SeRestorePrivilege	3060	svchost.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1576 wrote to memory of 2444	1576	JaffaCakes118_4bdc271e491cc879bd8db4913fc9872a.exe	30
PID 1576 wrote to memory of 2444	1576	JaffaCakes118_4bdc271e491cc879bd8db4913fc9872a.exe	30
PID 1576 wrote to memory of 2444	1576	JaffaCakes118_4bdc271e491cc879bd8db4913fc9872a.exe	30
PID 1576 wrote to memory of 2444	1576	JaffaCakes118_4bdc271e491cc879bd8db4913fc9872a.exe	30
PID 1576 wrote to memory of 2444	1576	JaffaCakes118_4bdc271e491cc879bd8db4913fc9872a.exe	30
PID 1576 wrote to memory of 2444	1576	JaffaCakes118_4bdc271e491cc879bd8db4913fc9872a.exe	30
PID 1576 wrote to memory of 2444	1576	JaffaCakes118_4bdc271e491cc879bd8db4913fc9872a.exe	30

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4bdc271e491cc879bd8db4913fc9872a.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4bdc271e491cc879bd8db4913fc9872a.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1576
- \??\c:\users\admin\appdata\local\fgypbtcdem
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4bdc271e491cc879bd8db4913fc9872a.exe" a -sc:\users\admin\appdata\local\temp\jaffacakes118_4bdc271e491cc879bd8db4913fc9872a.exe
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2444

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:3060

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%\yktje.cc3

Filesize
22.0MB

MD5
b40a736189f2e60a7a14190a0c103ba6

SHA1
f70c6f11ec0754ec1563e9844372405715ec5547

SHA256
bf44952a6599a9b50241da1edb88a88379374d545528913059484f63298a4555

SHA512
6d23ecf102c9d76931b9d415cec848d85e0f29c54b3d2a8f1b4d4bfc0784796327bbbde79ccef049c5ff41d4f0b6aeca032108086cc498714aabc8108e248465

Download Submit
\Users\Admin\AppData\Local\fgypbtcdem

Filesize
21.3MB

MD5
9d8249e69616e40a2943852fd41c216b

SHA1
b6010c6881bb6226610d2c03627d371a755c4af9

SHA256
2d6cdbaf88dd26b11e26011bf47e7ec91c446c9c23ff1a8041f06dc0a163f528

SHA512
b0e0980d0fd2a20d20570e17fb780de4c24a98747e1084632bcf2357051c27ebff3e788b0c210f43c2545109faa6c6c993693b20520b98a753b4a14a0af8b495

Download Submit
memory/1576-0-0x0000000000400000-0x000000000044E2FC-memory.dmp

Filesize
312KB

Download
memory/1576-3-0x0000000000230000-0x000000000027F000-memory.dmp

Filesize
316KB

Download
memory/1576-2-0x0000000000230000-0x000000000027F000-memory.dmp

Filesize
316KB

Download
memory/1576-11-0x0000000000400000-0x000000000044E2FC-memory.dmp

Filesize
312KB

Download
memory/2444-12-0x0000000000400000-0x000000000044E2FC-memory.dmp

Filesize
312KB

Download
memory/2444-14-0x00000000002D0000-0x00000000002D1000-memory.dmp

Filesize
4KB

Download
memory/2444-19-0x0000000000400000-0x000000000044E2FC-memory.dmp

Filesize
312KB

Download
memory/3060-20-0x00000000001B0000-0x00000000001B1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads