gh0strat | 1b5a5cf7fb631971b34931675213f2ee733c4234f5af96f005e6598dbaac2dd3

General

Target

1b5a5cf7fb631971b34931675213f2ee733c4234f5af96f005e6598dbaac2dd3.exe
Size

229KB
MD5

7e45b599c986d098cdd8ec7402a1b7f0
SHA1

a936c82a0542782e07726dff3e79c81495e1e09b
SHA256

1b5a5cf7fb631971b34931675213f2ee733c4234f5af96f005e6598dbaac2dd3
SHA512

f1e3f7e38dbdb764a66f3de635deb81418cdfafa736b1f3b541e04bf8e257eb6c509c31886493883cefaea78e50e2f314f6c419c99e783d7873877d5d878bf7f
SSDEEP

6144:x2vnAaPNJT3lhZ/8tgt79Jad3vqaFlgixK:inAONJJ/CgZ65rXU

Score

10^/10

gh0strat bootkit discovery persistence rat spyware stealer

Malware Config

Extracted

Family

gh0strat

C2

98.126.162.38:3201

http://98.126.162.36:803/

http://98.126.162.37:805/index.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

Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs

Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

persistence

Active Setup

T1547.014

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Active Setup\Installed Components	explorer.exe

Deletes itself 1 IoCs

pid	Process
2692	ezlgo.exe

Executes dropped EXE 2 IoCs

pid	Process
2692	ezlgo.exe
2812	gkg.exe

Loads dropped DLL 7 IoCs

pid	Process
2776	cmd.exe
2776	cmd.exe
2692	ezlgo.exe
2812	gkg.exe
2812	gkg.exe
2812	gkg.exe
2812	gkg.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-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\SHR = "c:\\Program Files\\qvwdc\\gkg.exe \"c:\\Program Files\\qvwdc\\gkgdh.dll\",Scheduler"	gkg.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)	\??\w:	gkg.exe
File opened (read-only)	\??\x:	gkg.exe
File opened (read-only)	\??\z:	gkg.exe
File opened (read-only)	\??\b:	gkg.exe
File opened (read-only)	\??\h:	gkg.exe
File opened (read-only)	\??\n:	gkg.exe
File opened (read-only)	\??\p:	gkg.exe
File opened (read-only)	\??\t:	gkg.exe
File opened (read-only)	\??\a:	gkg.exe
File opened (read-only)	\??\e:	gkg.exe
File opened (read-only)	\??\j:	gkg.exe
File opened (read-only)	\??\q:	gkg.exe
File opened (read-only)	\??\r:	gkg.exe
File opened (read-only)	\??\v:	gkg.exe
File opened (read-only)	\??\i:	gkg.exe
File opened (read-only)	\??\k:	gkg.exe
File opened (read-only)	\??\u:	gkg.exe
File opened (read-only)	\??\y:	gkg.exe
File opened (read-only)	\??\g:	gkg.exe
File opened (read-only)	\??\l:	gkg.exe
File opened (read-only)	\??\m:	gkg.exe
File opened (read-only)	\??\o:	gkg.exe
File opened (read-only)	\??\s:	gkg.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	gkg.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\qvwdc	ezlgo.exe
File created	\??\c:\Program Files\qvwdc\gkgdh.dll	ezlgo.exe
File created	\??\c:\Program Files\qvwdc\gkg.exe	ezlgo.exe
File opened for modification	\??\c:\Program Files\qvwdc\gkg.exe	ezlgo.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ezlgo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gkg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1b5a5cf7fb631971b34931675213f2ee733c4234f5af96f005e6598dbaac2dd3.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
2776	cmd.exe
2820	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	gkg.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	gkg.exe

Modifies registry class 5 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_Classes\Local Settings	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	explorer.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2820	PING.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2812	gkg.exe
2812	gkg.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1112	explorer.exe

Suspicious use of AdjustPrivilegeToken 17 IoCs

description	pid	Process
Token: SeDebugPrivilege	2812	gkg.exe
Token: SeShutdownPrivilege	1112	explorer.exe
Token: SeShutdownPrivilege	1112	explorer.exe
Token: SeShutdownPrivilege	1112	explorer.exe
Token: SeShutdownPrivilege	1112	explorer.exe
Token: SeShutdownPrivilege	1112	explorer.exe
Token: SeShutdownPrivilege	1112	explorer.exe
Token: SeShutdownPrivilege	1112	explorer.exe
Token: SeShutdownPrivilege	1112	explorer.exe
Token: SeShutdownPrivilege	1112	explorer.exe
Token: SeShutdownPrivilege	1112	explorer.exe
Token: 33	2664	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	2664	AUDIODG.EXE
Token: 33	2664	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	2664	AUDIODG.EXE
Token: SeShutdownPrivilege	1112	explorer.exe
Token: SeShutdownPrivilege	1112	explorer.exe

Suspicious use of FindShellTrayWindow 24 IoCs

pid	Process
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe

Suspicious use of SendNotifyMessage 15 IoCs

pid	Process
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2244	1b5a5cf7fb631971b34931675213f2ee733c4234f5af96f005e6598dbaac2dd3.exe
2692	ezlgo.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2244 wrote to memory of 2776	2244	1b5a5cf7fb631971b34931675213f2ee733c4234f5af96f005e6598dbaac2dd3.exe	30
PID 2244 wrote to memory of 2776	2244	1b5a5cf7fb631971b34931675213f2ee733c4234f5af96f005e6598dbaac2dd3.exe	30
PID 2244 wrote to memory of 2776	2244	1b5a5cf7fb631971b34931675213f2ee733c4234f5af96f005e6598dbaac2dd3.exe	30
PID 2244 wrote to memory of 2776	2244	1b5a5cf7fb631971b34931675213f2ee733c4234f5af96f005e6598dbaac2dd3.exe	30
PID 2776 wrote to memory of 2820	2776	cmd.exe	32
PID 2776 wrote to memory of 2820	2776	cmd.exe	32
PID 2776 wrote to memory of 2820	2776	cmd.exe	32
PID 2776 wrote to memory of 2820	2776	cmd.exe	32
PID 2776 wrote to memory of 2692	2776	cmd.exe	33
PID 2776 wrote to memory of 2692	2776	cmd.exe	33
PID 2776 wrote to memory of 2692	2776	cmd.exe	33
PID 2776 wrote to memory of 2692	2776	cmd.exe	33
PID 2692 wrote to memory of 2812	2692	ezlgo.exe	34
PID 2692 wrote to memory of 2812	2692	ezlgo.exe	34
PID 2692 wrote to memory of 2812	2692	ezlgo.exe	34
PID 2692 wrote to memory of 2812	2692	ezlgo.exe	34

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\1b5a5cf7fb631971b34931675213f2ee733c4234f5af96f005e6598dbaac2dd3.exe
"C:\Users\Admin\AppData\Local\Temp\1b5a5cf7fb631971b34931675213f2ee733c4234f5af96f005e6598dbaac2dd3.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2244
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\ezlgo.exe "C:\Users\Admin\AppData\Local\Temp\1b5a5cf7fb631971b34931675213f2ee733c4234f5af96f005e6598dbaac2dd3.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2776
- - 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:2820
- - C:\Users\Admin\AppData\Local\Temp\ezlgo.exe
    C:\Users\Admin\AppData\Local\Temp\\ezlgo.exe "C:\Users\Admin\AppData\Local\Temp\1b5a5cf7fb631971b34931675213f2ee733c4234f5af96f005e6598dbaac2dd3.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Loads dropped DLL
    - Drops file in Program Files directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2692
  - - \??\c:\Program Files\qvwdc\gkg.exe
      "c:\Program Files\qvwdc\gkg.exe" "c:\Program Files\qvwdc\gkgdh.dll",Scheduler C:\Users\Admin\AppData\Local\Temp\ezlgo.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:2812

C:\Windows\explorer.exe
explorer.exe
1⤵
- Boot or Logon Autostart Execution: Active Setup
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:1112

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x4e0
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2664

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Active Setup

1

T1547.014

Registry Run Keys / Startup Folder

1

T1547.001

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Active Setup

1

T1547.014

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

2

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:\Users\Admin\AppData\Local\Temp\ezlgo.exe

Filesize
229KB

MD5
35c73a7b3363787a954d164a4e98797d

SHA1
f94b67424a927d7bb0f6008062ea2a888569b2f3

SHA256
8bda7e6faa098c6139681078afd9cdf781bceb0e0f8f69d0bc2f24b925143feb

SHA512
95bc2fa76627ac39cf89d989a15815afcb197af8d1bc875e45031d487b1c6f4498ca2783f804acb0854a7c64e80838c003b6e95fd4551effa98fc075a9183814

Download Submit
\??\c:\Program Files\qvwdc\gkgdh.dll

Filesize
184KB

MD5
eee9f2b15d0f1f8abfc2683cc4c220c1

SHA1
3ec8d39a122c33ef0d8b561ef5ae64b89c8ebe08

SHA256
fe22c318fe009118dc346319d445b35af935b7c5224630c192ee6e4234a606b5

SHA512
a8bf0d5a735b32e028eafb14dad9ca4d0752be32316d3ca223390941f36d4908e3ebec6d33d015d5708225200f86b72227a9f281de54a3d9724724dbffb911c7

Download Submit
\Program Files\qvwdc\gkg.exe

Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

Download Submit
memory/2244-2-0x0000000000400000-0x000000000045001D-memory.dmp

Filesize
320KB

Download
memory/2244-1-0x0000000000400000-0x000000000045001D-memory.dmp

Filesize
320KB

Download
memory/2244-4-0x0000000000400000-0x000000000045001D-memory.dmp

Filesize
320KB

Download
memory/2244-0-0x0000000000400000-0x000000000045001D-memory.dmp

Filesize
320KB

Download
memory/2692-19-0x0000000000400000-0x000000000045001D-memory.dmp

Filesize
320KB

Download
memory/2692-12-0x0000000000400000-0x000000000045001D-memory.dmp

Filesize
320KB

Download
memory/2692-11-0x0000000000400000-0x000000000045001D-memory.dmp

Filesize
320KB

Download
memory/2776-7-0x0000000000130000-0x0000000000181000-memory.dmp

Filesize
324KB

Download
memory/2776-10-0x0000000000130000-0x0000000000181000-memory.dmp

Filesize
324KB

Download
memory/2812-28-0x0000000010000000-0x0000000010074000-memory.dmp

Filesize
464KB

Download
memory/2812-27-0x0000000010000000-0x0000000010074000-memory.dmp

Filesize
464KB

Download
memory/2812-29-0x0000000010000000-0x0000000010074000-memory.dmp

Filesize
464KB

Download
memory/2812-32-0x0000000010000000-0x0000000010074000-memory.dmp

Filesize
464KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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