gh0strat | cc660aa93eb84d75e095b116d4ed1d67203a1ceca719cb8d337fa9457bb52b56

General

Target

cc660aa93eb84d75e095b116d4ed1d67203a1ceca719cb8d337fa9457bb52b56.exe
Size

205KB
MD5

2f4591c53196c752b16a2c31247bc079
SHA1

c281faf8c90d81493cd862e7f7ca783e1764cb32
SHA256

cc660aa93eb84d75e095b116d4ed1d67203a1ceca719cb8d337fa9457bb52b56
SHA512

0741875d49b7dbf520ec6d91113a87c8bcbba6f82450795f81bf9b381ec9c749468015938d82058ca874ab7642a5692089a8c101e03b24e584efec574827bba0
SSDEEP

3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkT: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
4472	isfolcfcu.exe

Executes dropped EXE 2 IoCs

pid	Process
4472	isfolcfcu.exe
4672	wkc.exe

Loads dropped DLL 1 IoCs

pid	Process
4672	wkc.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-1-5-21-3975168204-1612096350-4002976354-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Depend = "c:\\Program Files\\bozxc\\wkc.exe \"c:\\Program Files\\bozxc\\wkcgo.dll\",Compliance"	wkc.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)	\??\e:	wkc.exe
File opened (read-only)	\??\j:	wkc.exe
File opened (read-only)	\??\p:	wkc.exe
File opened (read-only)	\??\v:	wkc.exe
File opened (read-only)	\??\w:	wkc.exe
File opened (read-only)	\??\y:	wkc.exe
File opened (read-only)	\??\a:	wkc.exe
File opened (read-only)	\??\k:	wkc.exe
File opened (read-only)	\??\m:	wkc.exe
File opened (read-only)	\??\n:	wkc.exe
File opened (read-only)	\??\o:	wkc.exe
File opened (read-only)	\??\s:	wkc.exe
File opened (read-only)	\??\u:	wkc.exe
File opened (read-only)	\??\x:	wkc.exe
File opened (read-only)	\??\b:	wkc.exe
File opened (read-only)	\??\i:	wkc.exe
File opened (read-only)	\??\l:	wkc.exe
File opened (read-only)	\??\q:	wkc.exe
File opened (read-only)	\??\g:	wkc.exe
File opened (read-only)	\??\h:	wkc.exe
File opened (read-only)	\??\r:	wkc.exe
File opened (read-only)	\??\t:	wkc.exe
File opened (read-only)	\??\z:	wkc.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	wkc.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\bozxc	isfolcfcu.exe
File created	\??\c:\Program Files\bozxc\wkcgo.dll	isfolcfcu.exe
File created	\??\c:\Program Files\bozxc\wkc.exe	isfolcfcu.exe
File opened for modification	\??\c:\Program Files\bozxc\wkc.exe	isfolcfcu.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	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	isfolcfcu.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wkc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cc660aa93eb84d75e095b116d4ed1d67203a1ceca719cb8d337fa9457bb52b56.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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
5920	cmd.exe
4060	PING.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	wkc.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	wkc.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4060	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4672	wkc.exe
4672	wkc.exe
4672	wkc.exe
4672	wkc.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4672	wkc.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2876	cc660aa93eb84d75e095b116d4ed1d67203a1ceca719cb8d337fa9457bb52b56.exe
4472	isfolcfcu.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2876 wrote to memory of 5920	2876	cc660aa93eb84d75e095b116d4ed1d67203a1ceca719cb8d337fa9457bb52b56.exe	86
PID 2876 wrote to memory of 5920	2876	cc660aa93eb84d75e095b116d4ed1d67203a1ceca719cb8d337fa9457bb52b56.exe	86
PID 2876 wrote to memory of 5920	2876	cc660aa93eb84d75e095b116d4ed1d67203a1ceca719cb8d337fa9457bb52b56.exe	86
PID 5920 wrote to memory of 4060	5920	cmd.exe	89
PID 5920 wrote to memory of 4060	5920	cmd.exe	89
PID 5920 wrote to memory of 4060	5920	cmd.exe	89
PID 5920 wrote to memory of 4472	5920	cmd.exe	92
PID 5920 wrote to memory of 4472	5920	cmd.exe	92
PID 5920 wrote to memory of 4472	5920	cmd.exe	92
PID 4472 wrote to memory of 4672	4472	isfolcfcu.exe	95
PID 4472 wrote to memory of 4672	4472	isfolcfcu.exe	95
PID 4472 wrote to memory of 4672	4472	isfolcfcu.exe	95

C:\Users\Admin\AppData\Local\Temp\cc660aa93eb84d75e095b116d4ed1d67203a1ceca719cb8d337fa9457bb52b56.exe
"C:\Users\Admin\AppData\Local\Temp\cc660aa93eb84d75e095b116d4ed1d67203a1ceca719cb8d337fa9457bb52b56.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2876
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\isfolcfcu.exe "C:\Users\Admin\AppData\Local\Temp\cc660aa93eb84d75e095b116d4ed1d67203a1ceca719cb8d337fa9457bb52b56.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:5920
- - 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:4060
- - C:\Users\Admin\AppData\Local\Temp\isfolcfcu.exe
    C:\Users\Admin\AppData\Local\Temp\\isfolcfcu.exe "C:\Users\Admin\AppData\Local\Temp\cc660aa93eb84d75e095b116d4ed1d67203a1ceca719cb8d337fa9457bb52b56.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:4472
  - - \??\c:\Program Files\bozxc\wkc.exe
      "c:\Program Files\bozxc\wkc.exe" "c:\Program Files\bozxc\wkcgo.dll",Compliance C:\Users\Admin\AppData\Local\Temp\isfolcfcu.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:4672

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c c:\Program Files\bozxc\wkc.exe "c:\Program Files\bozxc\wkcgo.dll",Compliance
1⤵
PID:5000

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\bozxc\wkc.exe

Filesize
60KB

MD5
889b99c52a60dd49227c5e485a016679

SHA1
8fa889e456aa646a4d0a4349977430ce5fa5e2d7

SHA256
6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

SHA512
08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

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

Filesize
206KB

MD5
672414f9b3a8dd10084d54decfcaa961

SHA1
d48009fd946803b122b138f68995c329f7aedb01

SHA256
628c9744cbcec04fca99e5bb81529ac33549d92261d41f06ff2def0fbf074073

SHA512
59de4a1b54544a6e887fb49b753174e80e9da396e8f26ec74aec202c5690036f3166f8d7e34f6f5e7308c98daf8e9fdfa20520e7913f5d431bb2147ea3e498e2

Download Submit
\??\c:\Program Files\bozxc\wkcgo.dll

Filesize
141KB

MD5
88e84c711f65b54e605c43e82375c312

SHA1
b61912c19e3634dd6f776400b570a54c1575fb70

SHA256
151165c18e3e5cf79186bfe0cfe7129f9ab2c4b5c1efe2d7dbb84408a0230013

SHA512
915977aaf184a969d318a2679276db1c8cf72b8abe83ce9ca0177d09ed415265ae84cf38456fd1ee988f375475d966bf008d8cf2dc2f7e963180799e71fb6146

Download Submit
memory/2876-5-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/2876-0-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/2876-2-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/2876-1-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/4472-10-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/4472-9-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/4472-16-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/4672-20-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/4672-21-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/4672-24-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads