gh0strat | 8b3b6ef2b1821abef740941e4a1d91322b62fed497d2bfc40f2c1dd9f99eac3f

General

Target

8b3b6ef2b1821abef740941e4a1d91322b62fed497d2bfc40f2c1dd9f99eac3f.exe
Size

207KB
MD5

5a4d82f862d357453f20403e95069476
SHA1

b145c117b097594c19919b00a0ee2e10033b8f87
SHA256

8b3b6ef2b1821abef740941e4a1d91322b62fed497d2bfc40f2c1dd9f99eac3f
SHA512

63fc6167a24e33d015aa068034a1da514f4b6f08c69bbb8b1692b83b9468f5debf9d3609ba41740611fd05309b62d1a2d855e0919893d8a444fdc03cfbe7610b
SSDEEP

3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkTF:X2vnSwjaOcADw9cUeCOf

Score

10^/10

gh0strat bootkit discovery persistence rat spyware stealer

Malware Config

Extracted

Family

gh0strat

C2

107.163.241.193:6520

http://107.163.241.181:16300/

http://107.163.241.182:12354/login.php

Attributes

user_agent
Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C))

Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0)

Signatures

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
3984	aiyaq.exe

Executes dropped EXE 2 IoCs

pid	Process
3984	aiyaq.exe
1804	zzft.exe

Loads dropped DLL 1 IoCs

pid	Process
1804	zzft.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1874072718-2205492803-118941907-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Depend = "c:\\Program Files\\gpkwd\\zzft.exe \"c:\\Program Files\\gpkwd\\zzftt.dll\",Compliance"	zzft.exe

Enumerates connected drives 3 TTPs 23 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\k:	zzft.exe
File opened (read-only)	\??\l:	zzft.exe
File opened (read-only)	\??\p:	zzft.exe
File opened (read-only)	\??\r:	zzft.exe
File opened (read-only)	\??\s:	zzft.exe
File opened (read-only)	\??\t:	zzft.exe
File opened (read-only)	\??\v:	zzft.exe
File opened (read-only)	\??\h:	zzft.exe
File opened (read-only)	\??\i:	zzft.exe
File opened (read-only)	\??\w:	zzft.exe
File opened (read-only)	\??\x:	zzft.exe
File opened (read-only)	\??\j:	zzft.exe
File opened (read-only)	\??\n:	zzft.exe
File opened (read-only)	\??\q:	zzft.exe
File opened (read-only)	\??\a:	zzft.exe
File opened (read-only)	\??\e:	zzft.exe
File opened (read-only)	\??\g:	zzft.exe
File opened (read-only)	\??\m:	zzft.exe
File opened (read-only)	\??\o:	zzft.exe
File opened (read-only)	\??\u:	zzft.exe
File opened (read-only)	\??\y:	zzft.exe
File opened (read-only)	\??\z:	zzft.exe
File opened (read-only)	\??\b:	zzft.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	zzft.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\gpkwd	aiyaq.exe
File created	\??\c:\Program Files\gpkwd\zzftt.dll	aiyaq.exe
File created	\??\c:\Program Files\gpkwd\zzft.exe	aiyaq.exe
File opened for modification	\??\c:\Program Files\gpkwd\zzft.exe	aiyaq.exe

System Location Discovery: System Language Discovery 1 TTPs 5 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	8b3b6ef2b1821abef740941e4a1d91322b62fed497d2bfc40f2c1dd9f99eac3f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	aiyaq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	zzft.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2004	PING.EXE
1932	cmd.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	zzft.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	zzft.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2004	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1804	zzft.exe
1804	zzft.exe
1804	zzft.exe
1804	zzft.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1804	zzft.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2176	8b3b6ef2b1821abef740941e4a1d91322b62fed497d2bfc40f2c1dd9f99eac3f.exe
3984	aiyaq.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2176 wrote to memory of 1932	2176	8b3b6ef2b1821abef740941e4a1d91322b62fed497d2bfc40f2c1dd9f99eac3f.exe	86
PID 2176 wrote to memory of 1932	2176	8b3b6ef2b1821abef740941e4a1d91322b62fed497d2bfc40f2c1dd9f99eac3f.exe	86
PID 2176 wrote to memory of 1932	2176	8b3b6ef2b1821abef740941e4a1d91322b62fed497d2bfc40f2c1dd9f99eac3f.exe	86
PID 1932 wrote to memory of 2004	1932	cmd.exe	89
PID 1932 wrote to memory of 2004	1932	cmd.exe	89
PID 1932 wrote to memory of 2004	1932	cmd.exe	89
PID 1932 wrote to memory of 3984	1932	cmd.exe	91
PID 1932 wrote to memory of 3984	1932	cmd.exe	91
PID 1932 wrote to memory of 3984	1932	cmd.exe	91
PID 3984 wrote to memory of 1804	3984	aiyaq.exe	93
PID 3984 wrote to memory of 1804	3984	aiyaq.exe	93
PID 3984 wrote to memory of 1804	3984	aiyaq.exe	93

C:\Users\Admin\AppData\Local\Temp\8b3b6ef2b1821abef740941e4a1d91322b62fed497d2bfc40f2c1dd9f99eac3f.exe
"C:\Users\Admin\AppData\Local\Temp\8b3b6ef2b1821abef740941e4a1d91322b62fed497d2bfc40f2c1dd9f99eac3f.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2176
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\aiyaq.exe "C:\Users\Admin\AppData\Local\Temp\8b3b6ef2b1821abef740941e4a1d91322b62fed497d2bfc40f2c1dd9f99eac3f.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1932
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 2
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2004
- - C:\Users\Admin\AppData\Local\Temp\aiyaq.exe
    C:\Users\Admin\AppData\Local\Temp\\aiyaq.exe "C:\Users\Admin\AppData\Local\Temp\8b3b6ef2b1821abef740941e4a1d91322b62fed497d2bfc40f2c1dd9f99eac3f.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Drops file in Program Files directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3984
  - - \??\c:\Program Files\gpkwd\zzft.exe
      "c:\Program Files\gpkwd\zzft.exe" "c:\Program Files\gpkwd\zzftt.dll",Compliance C:\Users\Admin\AppData\Local\Temp\aiyaq.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Adds Run key to start application
      Enumerates connected drives
      Writes to the Master Boot Record (MBR)
      System Location Discovery: System Language Discovery
      Checks processor information in registry
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1804

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Peripheral Device Discovery

Query Registry

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Program Files\gpkwd\zzft.exe

Filesize
60KB

MD5
889b99c52a60dd49227c5e485a016679

SHA1
8fa889e456aa646a4d0a4349977430ce5fa5e2d7

SHA256
6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

SHA512
08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

Download Submit
C:\Users\Admin\AppData\Local\Temp\aiyaq.exe

Filesize
207KB

MD5
4d0c80a471cec87cf132eb99b12c7290

SHA1
efd2b60b6727af82f8763ad16c00cf086c079ec7

SHA256
b649860589151ff7a3884cdbf9590b67411583a88056db4e6a8294e4a6706752

SHA512
b0f84ae392a7ef052707bef3ef01a6d019c8646aeb112b1974b5c15ca989305936315989f81a84600901e4ac0056e365a7ccecb9092d2c375d33d512a6922ac9

Download Submit
\??\c:\Program Files\gpkwd\zzftt.dll

Filesize
141KB

MD5
0e3ebbc175c2b195425e5017fdc64b62

SHA1
a5b9e899bf7730e90702b8ee2bb5ad98e3959f1d

SHA256
35d9995abe22e6c5c5449e80c7e11bbbcf5e8985820d4f91e94d6a8fea08e90a

SHA512
1574d9890ad7fe77ce94a8005465428afc60286ead997df1884d0ba8b00ddef94b48b6c358c78fcaccdcefbc9c70fbd3ec56ff6b01ebe5cf8dcaa3be42699f66

Download Submit
memory/1804-24-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/1804-20-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/1804-19-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/2176-4-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/2176-0-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/2176-1-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/2176-2-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/3984-9-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/3984-15-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/3984-8-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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