gh0strat | 22c8fc9c7ab6759e665a4e9e8bdd2904538ab352038537085f643295b6f33724

General

Target

22c8fc9c7ab6759e665a4e9e8bdd2904538ab352038537085f643295b6f33724.exe
Size

318KB
MD5

78f9918d06e51b5b4e86e241c95bdbc6
SHA1

fd2331b18c165e2771ebd20d83fd671d9a0a6f7d
SHA256

22c8fc9c7ab6759e665a4e9e8bdd2904538ab352038537085f643295b6f33724
SHA512

cd7730cc3de8417303f9b9ff675281f17ab3e36b76a6c5d81f70e822f05c74d15727df96c6d7af7609b9fa9895b5788cebc6df64abaa86b6ffb1cb2801cbaa1a
SSDEEP

6144:ORoSgWbzYds0SfxsTxt3YeWH8k+p+Nj8DmV9Z3+jH:RSfbzc8GrYdcb88Dw+z

Score

10^/10

gh0strat bootkit discovery persistence rat spyware stealer upx

Malware Config

Extracted

Family

gh0strat

C2

host123.zz.am:6658

http://107.163.43.235:12388/

http://107.163.43.236:10289/support.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-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Active Setup\Installed Components	explorer.exe

Deletes itself 1 IoCs

pid	Process
2916	xyatuaa.exe

Executes dropped EXE 2 IoCs

pid	Process
2916	xyatuaa.exe
2768	sygoxm.exe

Loads dropped DLL 7 IoCs

pid	Process
2728	cmd.exe
2728	cmd.exe
2916	xyatuaa.exe
2768	sygoxm.exe
2768	sygoxm.exe
2768	sygoxm.exe
2768	sygoxm.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-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows\CurrentVersion\Run\flate = "c:\\Program Files\\ouawt\\sygoxm.exe \"c:\\Program Files\\ouawt\\sygoxm.dll\",inflate"	sygoxm.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)	\??\i:	sygoxm.exe
File opened (read-only)	\??\l:	sygoxm.exe
File opened (read-only)	\??\q:	sygoxm.exe
File opened (read-only)	\??\t:	sygoxm.exe
File opened (read-only)	\??\x:	sygoxm.exe
File opened (read-only)	\??\z:	sygoxm.exe
File opened (read-only)	\??\o:	sygoxm.exe
File opened (read-only)	\??\a:	sygoxm.exe
File opened (read-only)	\??\b:	sygoxm.exe
File opened (read-only)	\??\g:	sygoxm.exe
File opened (read-only)	\??\h:	sygoxm.exe
File opened (read-only)	\??\j:	sygoxm.exe
File opened (read-only)	\??\n:	sygoxm.exe
File opened (read-only)	\??\r:	sygoxm.exe
File opened (read-only)	\??\m:	sygoxm.exe
File opened (read-only)	\??\p:	sygoxm.exe
File opened (read-only)	\??\s:	sygoxm.exe
File opened (read-only)	\??\u:	sygoxm.exe
File opened (read-only)	\??\v:	sygoxm.exe
File opened (read-only)	\??\w:	sygoxm.exe
File opened (read-only)	\??\e:	sygoxm.exe
File opened (read-only)	\??\k:	sygoxm.exe
File opened (read-only)	\??\y:	sygoxm.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	sygoxm.exe

UPX packed file 10 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/308-0-0x0000000000400000-0x000000000046F000-memory.dmp	upx
behavioral1/memory/308-2-0x0000000000400000-0x000000000046F000-memory.dmp	upx
behavioral1/files/0x000c000000012281-3.dat	upx
behavioral1/memory/2916-7-0x0000000000400000-0x000000000046F000-memory.dmp	upx
behavioral1/memory/2916-14-0x0000000000400000-0x000000000046F000-memory.dmp	upx
behavioral1/files/0x0015000000016b47-17.dat	upx
behavioral1/memory/2768-21-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral1/memory/2768-22-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral1/memory/2768-26-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral1/memory/2768-27-0x0000000010000000-0x000000001004B000-memory.dmp	upx

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File created	\??\c:\Program Files\ouawt\sygoxm.dll	xyatuaa.exe
File created	\??\c:\Program Files\ouawt\sygoxm.exe	xyatuaa.exe
File opened for modification	\??\c:\Program Files\ouawt\sygoxm.exe	xyatuaa.exe
File opened for modification	\??\c:\Program Files\ouawt	xyatuaa.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	22c8fc9c7ab6759e665a4e9e8bdd2904538ab352038537085f643295b6f33724.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	xyatuaa.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sygoxm.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
2728	cmd.exe
2744	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	sygoxm.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	sygoxm.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000_Classes\Local Settings	explorer.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2744	PING.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2768	sygoxm.exe
2768	sygoxm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2548	explorer.exe

Suspicious use of AdjustPrivilegeToken 13 IoCs

description	pid	Process
Token: SeDebugPrivilege	2768	sygoxm.exe
Token: SeShutdownPrivilege	2548	explorer.exe
Token: SeShutdownPrivilege	2548	explorer.exe
Token: SeShutdownPrivilege	2548	explorer.exe
Token: SeShutdownPrivilege	2548	explorer.exe
Token: SeShutdownPrivilege	2548	explorer.exe
Token: SeShutdownPrivilege	2548	explorer.exe
Token: SeShutdownPrivilege	2548	explorer.exe
Token: SeShutdownPrivilege	2548	explorer.exe
Token: SeShutdownPrivilege	2548	explorer.exe
Token: SeShutdownPrivilege	2548	explorer.exe
Token: SeShutdownPrivilege	2548	explorer.exe
Token: SeShutdownPrivilege	2548	explorer.exe

Suspicious use of FindShellTrayWindow 28 IoCs

pid	Process
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe

Suspicious use of SendNotifyMessage 20 IoCs

pid	Process
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe
2548	explorer.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
308	22c8fc9c7ab6759e665a4e9e8bdd2904538ab352038537085f643295b6f33724.exe
2916	xyatuaa.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 308 wrote to memory of 2728	308	22c8fc9c7ab6759e665a4e9e8bdd2904538ab352038537085f643295b6f33724.exe	30
PID 308 wrote to memory of 2728	308	22c8fc9c7ab6759e665a4e9e8bdd2904538ab352038537085f643295b6f33724.exe	30
PID 308 wrote to memory of 2728	308	22c8fc9c7ab6759e665a4e9e8bdd2904538ab352038537085f643295b6f33724.exe	30
PID 308 wrote to memory of 2728	308	22c8fc9c7ab6759e665a4e9e8bdd2904538ab352038537085f643295b6f33724.exe	30
PID 2728 wrote to memory of 2744	2728	cmd.exe	32
PID 2728 wrote to memory of 2744	2728	cmd.exe	32
PID 2728 wrote to memory of 2744	2728	cmd.exe	32
PID 2728 wrote to memory of 2744	2728	cmd.exe	32
PID 2728 wrote to memory of 2916	2728	cmd.exe	33
PID 2728 wrote to memory of 2916	2728	cmd.exe	33
PID 2728 wrote to memory of 2916	2728	cmd.exe	33
PID 2728 wrote to memory of 2916	2728	cmd.exe	33
PID 2916 wrote to memory of 2768	2916	xyatuaa.exe	34
PID 2916 wrote to memory of 2768	2916	xyatuaa.exe	34
PID 2916 wrote to memory of 2768	2916	xyatuaa.exe	34
PID 2916 wrote to memory of 2768	2916	xyatuaa.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\22c8fc9c7ab6759e665a4e9e8bdd2904538ab352038537085f643295b6f33724.exe
"C:\Users\Admin\AppData\Local\Temp\22c8fc9c7ab6759e665a4e9e8bdd2904538ab352038537085f643295b6f33724.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:308
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\xyatuaa.exe "C:\Users\Admin\AppData\Local\Temp\22c8fc9c7ab6759e665a4e9e8bdd2904538ab352038537085f643295b6f33724.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2728
- - 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:2744
- - C:\Users\Admin\AppData\Local\Temp\xyatuaa.exe
    C:\Users\Admin\AppData\Local\Temp\\xyatuaa.exe "C:\Users\Admin\AppData\Local\Temp\22c8fc9c7ab6759e665a4e9e8bdd2904538ab352038537085f643295b6f33724.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:2916
  - - \??\c:\Program Files\ouawt\sygoxm.exe
      "c:\Program Files\ouawt\sygoxm.exe" "c:\Program Files\ouawt\sygoxm.dll",inflate C:\Users\Admin\AppData\Local\Temp\xyatuaa.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:2768

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:2548

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

\Program Files\ouawt\sygoxm.dll

Filesize
134KB

MD5
5ed8b58ec7e2f80d51b704edf70e9253

SHA1
083dff980a557191ec9afbb4e36174fe3e8b3b83

SHA256
660af19bcbaf421a8d83b566c939da992d1fa62be9e32c7670371addd48b0224

SHA512
0a1f9a06e4a229fe50dd862fdcd834f5f9dbf70d83bfe2ad06bc504c8082e69b5eed7ed5aca736b291b94c18f9a38d7848d9435d13a0ae3e6bec88d7c07bbf74

Download Submit
\Program Files\ouawt\sygoxm.exe

Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

Download Submit
\Users\Admin\AppData\Local\Temp\xyatuaa.exe

Filesize
318KB

MD5
0a359cdbbc55cf4bec3da2f29b1981f0

SHA1
ffc72a73e01a3d21097fc5fb4def48d155b4738f

SHA256
0fe3dfde4c2100a98467b7994e5d3ee8b23cc50331824d694543101744d61902

SHA512
814a3187489b32ed4122851dab8dd67a44633387fada0eba0f270878e598a60ab939c3c665b865d85eabc4550f66e2097487d84333fa64f3fabcef0f7302d4a5

Download Submit
memory/308-0-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/308-2-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/2768-21-0x0000000010000000-0x000000001004B000-memory.dmp

Filesize
300KB

Download
memory/2768-22-0x0000000010000000-0x000000001004B000-memory.dmp

Filesize
300KB

Download
memory/2768-26-0x0000000010000000-0x000000001004B000-memory.dmp

Filesize
300KB

Download
memory/2768-27-0x0000000010000000-0x000000001004B000-memory.dmp

Filesize
300KB

Download
memory/2916-7-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/2916-14-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads