gh0strat | 1c221f9ecc204c8afd01456e0aec5db1229eb90f77f69e72d461187b430cec26

General

Target

JaffaCakes118_5b740c8a44fc00d67b88a9685fa7f038.exe
Size

96KB
MD5

5b740c8a44fc00d67b88a9685fa7f038
SHA1

c7111cb7dc916d0497d5f3ca40685cc4bd26f9be
SHA256

1c221f9ecc204c8afd01456e0aec5db1229eb90f77f69e72d461187b430cec26
SHA512

da029a40d1d81f8917cba906b098aad25a92b4d418667da2ea919deb8a5508c618ae0b730f45cd7569fc543a92c0a9100e141c8bebc77cf59f901c6dbde8c2b6
SSDEEP

1536:OmFusSx9qYMhdFHS8qdydo3nTzhYxJA+CwNUtBZVY9v8pr9cgdO1Gp3v:OsS4jHS8q/3nTzePCwNUh4E9Ukp/

Score

10^/10

gh0strat bootkit discovery persistence rat

Malware Config

Signatures

Gh0st RAT payload 4 IoCs

resource	yara_rule
behavioral1/files/0x0008000000019cba-20.dat	family_gh0strat
behavioral1/memory/2976-23-0x0000000000400000-0x000000000044E2C0-memory.dmp	family_gh0strat
behavioral1/memory/2948-26-0x0000000020000000-0x0000000020027000-memory.dmp	family_gh0strat
behavioral1/memory/2948-28-0x0000000020000000-0x0000000020027000-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
2976	hhjxnhvgov

Executes dropped EXE 1 IoCs

pid	Process
2976	hhjxnhvgov

Loads dropped DLL 3 IoCs

pid	Process
2652	JaffaCakes118_5b740c8a44fc00d67b88a9685fa7f038.exe
2652	JaffaCakes118_5b740c8a44fc00d67b88a9685fa7f038.exe
2948	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\iearcjlxbt	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_5b740c8a44fc00d67b88a9685fa7f038.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	hhjxnhvgov
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
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 3 IoCs

pid	Process
2976	hhjxnhvgov
2948	svchost.exe
2948	svchost.exe

Suspicious use of AdjustPrivilegeToken 18 IoCs

description	pid	Process
Token: SeRestorePrivilege	2976	hhjxnhvgov
Token: SeBackupPrivilege	2976	hhjxnhvgov
Token: SeBackupPrivilege	2976	hhjxnhvgov
Token: SeRestorePrivilege	2976	hhjxnhvgov
Token: SeBackupPrivilege	2948	svchost.exe
Token: SeRestorePrivilege	2948	svchost.exe
Token: SeBackupPrivilege	2948	svchost.exe
Token: SeBackupPrivilege	2948	svchost.exe
Token: SeSecurityPrivilege	2948	svchost.exe
Token: SeSecurityPrivilege	2948	svchost.exe
Token: SeBackupPrivilege	2948	svchost.exe
Token: SeBackupPrivilege	2948	svchost.exe
Token: SeSecurityPrivilege	2948	svchost.exe
Token: SeBackupPrivilege	2948	svchost.exe
Token: SeBackupPrivilege	2948	svchost.exe
Token: SeSecurityPrivilege	2948	svchost.exe
Token: SeBackupPrivilege	2948	svchost.exe
Token: SeRestorePrivilege	2948	svchost.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2652 wrote to memory of 2976	2652	JaffaCakes118_5b740c8a44fc00d67b88a9685fa7f038.exe	30
PID 2652 wrote to memory of 2976	2652	JaffaCakes118_5b740c8a44fc00d67b88a9685fa7f038.exe	30
PID 2652 wrote to memory of 2976	2652	JaffaCakes118_5b740c8a44fc00d67b88a9685fa7f038.exe	30
PID 2652 wrote to memory of 2976	2652	JaffaCakes118_5b740c8a44fc00d67b88a9685fa7f038.exe	30

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5b740c8a44fc00d67b88a9685fa7f038.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5b740c8a44fc00d67b88a9685fa7f038.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2652
- \??\c:\users\admin\appdata\local\hhjxnhvgov
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5b740c8a44fc00d67b88a9685fa7f038.exe" a -sc:\users\admin\appdata\local\temp\jaffacakes118_5b740c8a44fc00d67b88a9685fa7f038.exe
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2976

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:2948

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%\mredi.cc3

Filesize
24.0MB

MD5
c351de3c883ecc30957b9c0365fac7b6

SHA1
040952216bebf419e2c201bc551a4baec41ce44c

SHA256
1a9afe8c9edec2f7eb9ec4fa8bbf88e99424512c1ac87d86b3d338b279acae33

SHA512
476362de5894765b94b404ec5c7954a8bf35228fe7b8e79eecd88a3798c1ac48c7ffdec82c046e999cc5228eb0d11956c4c54479e6808e1e86c765fff9d0bb4c

Download Submit
\Users\Admin\AppData\Local\hhjxnhvgov

Filesize
20.0MB

MD5
273ef4f8692920887bfff8d179107929

SHA1
09c1e6942c143d245f7683109e48892034c7a3d3

SHA256
5a3d79877b94d5d2f6cf57b5418e58a012fef309a4dfe77d8448d951b31f78ea

SHA512
5505f7bd54320c73c9ac7a1034fc7eabf475d6dbe9ec728d8687d429b21726b641dfe8e0201e2ae92915e6d5c6ec8ef656bc47be875fc2b9c6107ad02ade30f9

Download Submit
memory/2652-0-0x0000000000400000-0x000000000044E2C0-memory.dmp

Filesize
312KB

Download
memory/2652-2-0x0000000000030000-0x0000000000031000-memory.dmp

Filesize
4KB

Download
memory/2652-6-0x0000000000230000-0x000000000027F000-memory.dmp

Filesize
316KB

Download
memory/2652-13-0x0000000000400000-0x000000000044E2C0-memory.dmp

Filesize
312KB

Download
memory/2948-24-0x0000000000260000-0x0000000000261000-memory.dmp

Filesize
4KB

Download
memory/2948-26-0x0000000020000000-0x0000000020027000-memory.dmp

Filesize
156KB

Download
memory/2948-28-0x0000000020000000-0x0000000020027000-memory.dmp

Filesize
156KB

Download
memory/2976-17-0x0000000000030000-0x0000000000031000-memory.dmp

Filesize
4KB

Download
memory/2976-16-0x0000000000400000-0x000000000044E2C0-memory.dmp

Filesize
312KB

Download
memory/2976-23-0x0000000000400000-0x000000000044E2C0-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads