gh0strat | 34d5f715014b52fff5fe0b0bfe5ba7aad7e09d03a180d1e410acb49af3b968eb

General

Target

JaffaCakes118_4341a5d57788fc11c7dd64aa09af9e25.exe
Size

95KB
MD5

4341a5d57788fc11c7dd64aa09af9e25
SHA1

c634766b96a54c7ce75b0d92d81fae0456018685
SHA256

34d5f715014b52fff5fe0b0bfe5ba7aad7e09d03a180d1e410acb49af3b968eb
SHA512

cae7329a0c7da5eb816467538cb4ce9d457bce56eb6acd4eebde2e21a7cd36810556407f651e2e8f0d9e470b7086acf9f919dd982fa0c96840281d7b58ffb064
SSDEEP

1536:L+FusSx9qYMhdFHS8qdydo3nTzhYxJA+CwNUtBZVY9v8prdpP23w:LES4jHS8q/3nTzePCwNUh4E9Tx

Score

10^/10

gh0strat bootkit discovery persistence rat

Malware Config

Signatures

Gh0st RAT payload 3 IoCs

resource	yara_rule
behavioral1/files/0x0009000000016d31-20.dat	family_gh0strat
behavioral1/memory/2004-22-0x0000000000400000-0x000000000044E27C-memory.dmp	family_gh0strat
behavioral1/memory/3004-25-0x0000000020000000-0x0000000020027000-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
2004	clkupimdpv

Executes dropped EXE 1 IoCs

pid	Process
2004	clkupimdpv

Loads dropped DLL 3 IoCs

pid	Process
2672	JaffaCakes118_4341a5d57788fc11c7dd64aa09af9e25.exe
2672	JaffaCakes118_4341a5d57788fc11c7dd64aa09af9e25.exe
3004	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 created	C:\Windows\SysWOW64\rorjtudkap	svchost.exe
File created	C:\Windows\SysWOW64\rwgccxfink	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_4341a5d57788fc11c7dd64aa09af9e25.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	clkupimdpv
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	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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	svchost.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2004	clkupimdpv
3004	svchost.exe
3004	svchost.exe
3004	svchost.exe

Suspicious use of AdjustPrivilegeToken 18 IoCs

description	pid	Process
Token: SeRestorePrivilege	2004	clkupimdpv
Token: SeBackupPrivilege	2004	clkupimdpv
Token: SeBackupPrivilege	2004	clkupimdpv
Token: SeRestorePrivilege	2004	clkupimdpv
Token: SeBackupPrivilege	3004	svchost.exe
Token: SeRestorePrivilege	3004	svchost.exe
Token: SeBackupPrivilege	3004	svchost.exe
Token: SeBackupPrivilege	3004	svchost.exe
Token: SeSecurityPrivilege	3004	svchost.exe
Token: SeSecurityPrivilege	3004	svchost.exe
Token: SeBackupPrivilege	3004	svchost.exe
Token: SeBackupPrivilege	3004	svchost.exe
Token: SeSecurityPrivilege	3004	svchost.exe
Token: SeBackupPrivilege	3004	svchost.exe
Token: SeBackupPrivilege	3004	svchost.exe
Token: SeSecurityPrivilege	3004	svchost.exe
Token: SeBackupPrivilege	3004	svchost.exe
Token: SeRestorePrivilege	3004	svchost.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2672 wrote to memory of 2004	2672	JaffaCakes118_4341a5d57788fc11c7dd64aa09af9e25.exe	30
PID 2672 wrote to memory of 2004	2672	JaffaCakes118_4341a5d57788fc11c7dd64aa09af9e25.exe	30
PID 2672 wrote to memory of 2004	2672	JaffaCakes118_4341a5d57788fc11c7dd64aa09af9e25.exe	30
PID 2672 wrote to memory of 2004	2672	JaffaCakes118_4341a5d57788fc11c7dd64aa09af9e25.exe	30

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4341a5d57788fc11c7dd64aa09af9e25.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4341a5d57788fc11c7dd64aa09af9e25.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2672
- \??\c:\users\admin\appdata\local\clkupimdpv
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4341a5d57788fc11c7dd64aa09af9e25.exe" a -sc:\users\admin\appdata\local\temp\jaffacakes118_4341a5d57788fc11c7dd64aa09af9e25.exe
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2004

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:3004

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%\kilkx.cc3

Filesize
23.1MB

MD5
524bf6366117904fd817b4d07f990a2c

SHA1
02c4d6a397cdc3a7997cc2e64dda8b9031de204a

SHA256
b73402c5ed9827de28cf2cbd1ba2e6f0013f25bcc58930fa4c9018a4c544bc3e

SHA512
910e873fd4ec4efbbe527e1ea0eea983d3e83c4298aa0938a5f3d9495ffa7c6d08e204c06187fba6e5e85eea84da7556b56338b10d5869f1a12190d9b2c7e578

Download Submit
\Users\Admin\AppData\Local\clkupimdpv

Filesize
24.3MB

MD5
0235858d1e19b52f6a385aa434e654cd

SHA1
2e43d213f9198b1332a5cd3f7784bebebe665c47

SHA256
3ffc109f9100e7c8dc9a9f2c91da2ddd430031048880e3bfcf64cdf87a7d1486

SHA512
126b901cf861ed02d515eaf6e6c05c0810222aedc5acf8c5201a6433251858fdbc82f87607f80fdfbf2cfcff172f6b9c370592cb1ffa0530602307a9809f39c9

Download Submit
memory/2004-15-0x0000000000400000-0x000000000044E27C-memory.dmp

Filesize
312KB

Download
memory/2004-17-0x0000000000030000-0x0000000000031000-memory.dmp

Filesize
4KB

Download
memory/2004-22-0x0000000000400000-0x000000000044E27C-memory.dmp

Filesize
312KB

Download
memory/2672-2-0x0000000000030000-0x0000000000031000-memory.dmp

Filesize
4KB

Download
memory/2672-1-0x0000000000400000-0x000000000044E27C-memory.dmp

Filesize
312KB

Download
memory/2672-7-0x0000000000230000-0x000000000027F000-memory.dmp

Filesize
316KB

Download
memory/2672-13-0x0000000000400000-0x000000000044E27C-memory.dmp

Filesize
312KB

Download
memory/3004-23-0x00000000001C0000-0x00000000001C1000-memory.dmp

Filesize
4KB

Download
memory/3004-25-0x0000000020000000-0x0000000020027000-memory.dmp

Filesize
156KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads