gh0strat | 449a1158df3aeb57bd1ae6cb39121495069c6da34c80e5bbc6ad25f518fe2a14

General

Target

JaffaCakes118_5fb1e921b2c9aae7c2787b218dc7dadf.exe
Size

95KB
MD5

5fb1e921b2c9aae7c2787b218dc7dadf
SHA1

8c81916e147b6c11a61d05eab00c82272a770964
SHA256

449a1158df3aeb57bd1ae6cb39121495069c6da34c80e5bbc6ad25f518fe2a14
SHA512

bee49d64d7fe6cac132050f06233d4e98dd178b61f696fff7acb8e23e04f4536fedcd96277e32043158ef59e34799fca291291441b937cb1d818766c6762f5c7
SSDEEP

1536:KRFusSx9qYMhdFHS8qdydo3nTzhYxJA+CwNUtBZVY9v8prfltf5kf:KHS4jHS8q/3nTzePCwNUh4E9fLuf

Score

10^/10

gh0strat bootkit discovery persistence rat

Malware Config

Signatures

Gh0st RAT payload 4 IoCs

resource	yara_rule
behavioral1/files/0x0008000000018b68-19.dat	family_gh0strat
behavioral1/memory/2380-21-0x0000000000400000-0x000000000044E24C-memory.dmp	family_gh0strat
behavioral1/memory/2724-24-0x0000000020000000-0x0000000020027000-memory.dmp	family_gh0strat
behavioral1/memory/2724-26-0x0000000020000000-0x0000000020027000-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
2380	hujqqbrekd

Executes dropped EXE 1 IoCs

pid	Process
2380	hujqqbrekd

Loads dropped DLL 3 IoCs

pid	Process
1916	JaffaCakes118_5fb1e921b2c9aae7c2787b218dc7dadf.exe
1916	JaffaCakes118_5fb1e921b2c9aae7c2787b218dc7dadf.exe
2724	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\ismaukkjsg	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_5fb1e921b2c9aae7c2787b218dc7dadf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	hujqqbrekd
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
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

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2380	hujqqbrekd
2724	svchost.exe
2724	svchost.exe

Suspicious use of AdjustPrivilegeToken 18 IoCs

description	pid	Process
Token: SeRestorePrivilege	2380	hujqqbrekd
Token: SeBackupPrivilege	2380	hujqqbrekd
Token: SeBackupPrivilege	2380	hujqqbrekd
Token: SeRestorePrivilege	2380	hujqqbrekd
Token: SeBackupPrivilege	2724	svchost.exe
Token: SeRestorePrivilege	2724	svchost.exe
Token: SeBackupPrivilege	2724	svchost.exe
Token: SeBackupPrivilege	2724	svchost.exe
Token: SeSecurityPrivilege	2724	svchost.exe
Token: SeSecurityPrivilege	2724	svchost.exe
Token: SeBackupPrivilege	2724	svchost.exe
Token: SeBackupPrivilege	2724	svchost.exe
Token: SeSecurityPrivilege	2724	svchost.exe
Token: SeBackupPrivilege	2724	svchost.exe
Token: SeBackupPrivilege	2724	svchost.exe
Token: SeSecurityPrivilege	2724	svchost.exe
Token: SeBackupPrivilege	2724	svchost.exe
Token: SeRestorePrivilege	2724	svchost.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1916 wrote to memory of 2380	1916	JaffaCakes118_5fb1e921b2c9aae7c2787b218dc7dadf.exe	30
PID 1916 wrote to memory of 2380	1916	JaffaCakes118_5fb1e921b2c9aae7c2787b218dc7dadf.exe	30
PID 1916 wrote to memory of 2380	1916	JaffaCakes118_5fb1e921b2c9aae7c2787b218dc7dadf.exe	30
PID 1916 wrote to memory of 2380	1916	JaffaCakes118_5fb1e921b2c9aae7c2787b218dc7dadf.exe	30

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5fb1e921b2c9aae7c2787b218dc7dadf.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5fb1e921b2c9aae7c2787b218dc7dadf.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1916
- \??\c:\users\admin\appdata\local\hujqqbrekd
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5fb1e921b2c9aae7c2787b218dc7dadf.exe" a -sc:\users\admin\appdata\local\temp\jaffacakes118_5fb1e921b2c9aae7c2787b218dc7dadf.exe
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2380

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:2724

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:\Users\Admin\AppData\Local\hujqqbrekd

Filesize
24.0MB

MD5
42e90deb63adae110120f541d75f4814

SHA1
bea87858a319777d7c4f97e8727cbf7387c4f81e

SHA256
e2ab744583fa2167c0a52e8b236d1aaf1b25336e5660c41fcfd5f8acba40626e

SHA512
d9ef7a98753a34ebf9d24a195a841aedcf7494f3fcf8a4f0cf7d9684a68a8971bad21deeecb837009be828d40168c4d0006e6c11a8cc1a906c5e3f29a63b578b

Download Submit
\??\c:\programdata\application data\storm\update\%sessionname%\nhcoq.cc3

Filesize
23.0MB

MD5
17305e865523b3f7e36f0822d3f29c8f

SHA1
02c81ae8325885344197444ca57ab9b35aee9276

SHA256
a3218549c6732bfa078f9e8d91b3728ada49be4fa9f7dd61c72d75752d4330ff

SHA512
b9fe3eaed592868d4da873eb323a654ecc42f1c859dfc3db4e63b87ef297eb9122aef3adf1b2930a748f16c92b90c9020f5a17cf625b5e5d0911796a48ce7aee

Download Submit
memory/1916-7-0x0000000000230000-0x000000000027F000-memory.dmp

Filesize
316KB

Download
memory/1916-2-0x0000000000030000-0x0000000000031000-memory.dmp

Filesize
4KB

Download
memory/1916-1-0x0000000000400000-0x000000000044E24C-memory.dmp

Filesize
312KB

Download
memory/1916-16-0x0000000000400000-0x000000000044E24C-memory.dmp

Filesize
312KB

Download
memory/2380-13-0x0000000000400000-0x000000000044E24C-memory.dmp

Filesize
312KB

Download
memory/2380-21-0x0000000000400000-0x000000000044E24C-memory.dmp

Filesize
312KB

Download
memory/2724-22-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/2724-24-0x0000000020000000-0x0000000020027000-memory.dmp

Filesize
156KB

Download
memory/2724-26-0x0000000020000000-0x0000000020027000-memory.dmp

Filesize
156KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads