cybergate | 7f6fa7cb7c1b8bbc8ddc2f73960480f528250fac8842912520edf85b64924605

Modify Registry

Processes:

winupdate.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	winupdate.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\Policies = "C:\\Winbooter\\svchost.exe"	winupdate.exe
Key created	\REGISTRY\USER\S-1-5-21-2398549320-3657759451-817663969-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	winupdate.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2398549320-3657759451-817663969-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\Policies = "C:\\Winbooter\\svchost.exe"	winupdate.exe

Modifies Installed Components in the registry 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

Processes:

explorer.exewinupdate.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{MLFW2O8A-447B-2O58-B88L-S302L73L72ST}\StubPath = "C:\\Winbooter\\svchost.exe"	explorer.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{MLFW2O8A-447B-2O58-B88L-S302L73L72ST}	winupdate.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{MLFW2O8A-447B-2O58-B88L-S302L73L72ST}\StubPath = "C:\\Winbooter\\svchost.exe Restart"	winupdate.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{MLFW2O8A-447B-2O58-B88L-S302L73L72ST}	explorer.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

System Information Discovery

Processes:

7500ce0c4a42420ae8e50c241974c891.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2398549320-3657759451-817663969-1000\Control Panel\International\Geo\Nation	7500ce0c4a42420ae8e50c241974c891.exe

Executes dropped EXE 3 IoCs

Processes:

2345.exewinupdate.exesvchost.exe

pid process

2036 2345.exe
3720 winupdate.exe
2636 svchost.exe
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads local data of messenger clients 2 TTPs
Infostealers often target stored data of messaging applications, which can include saved credentials and account information.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 2 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

pid	process
2036	2345.exe
3720	winupdate.exe
2636	svchost.exe

UPX packed file 6 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/3720-56-0x0000000024010000-0x0000000024070000-memory.dmp	upx
behavioral2/memory/3720-116-0x0000000024070000-0x00000000240D0000-memory.dmp	upx
behavioral2/memory/2336-121-0x0000000024070000-0x00000000240D0000-memory.dmp	upx
behavioral2/memory/3960-187-0x00000000240D0000-0x0000000024130000-memory.dmp	upx
behavioral2/memory/2336-828-0x0000000024070000-0x00000000240D0000-memory.dmp	upx
behavioral2/memory/3960-1507-0x00000000240D0000-0x0000000024130000-memory.dmp	upx

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

Processes:

winupdate.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\HKLM = "C:\\Winbooter\\svchost.exe"	winupdate.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2398549320-3657759451-817663969-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Winbooter\\svchost.exe"	winupdate.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

2345.exe

description pid process target process

PID 2036 set thread context of 3720 2036 2345.exe winupdate.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

description	pid	process	target process
PID 2036 set thread context of 3720	2036	2345.exe	winupdate.exe

Checks processor information in registry 2 TTPs 6 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

System Information Discovery

Processes:

dw20.exedw20.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	dw20.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	dw20.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	dw20.exe

Enumerates system info in registry 2 TTPs 4 IoCs

Query Registry

System Information Discovery

Processes:

dw20.exedw20.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	dw20.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	dw20.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	dw20.exe

Modifies registry class 1 IoCs

Processes:

explorer.exe

description ioc process

Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ explorer.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

7500ce0c4a42420ae8e50c241974c891.exe2345.exewinupdate.exe

pid process

1132 7500ce0c4a42420ae8e50c241974c891.exe
1132 7500ce0c4a42420ae8e50c241974c891.exe
2036 2345.exe
3720 winupdate.exe
3720 winupdate.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

explorer.exe

pid process

3960 explorer.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	explorer.exe

pid	process
1132	7500ce0c4a42420ae8e50c241974c891.exe
1132	7500ce0c4a42420ae8e50c241974c891.exe
2036	2345.exe
3720	winupdate.exe
3720	winupdate.exe

pid	process
3960	explorer.exe

Suspicious use of AdjustPrivilegeToken 10 IoCs

Processes:

7500ce0c4a42420ae8e50c241974c891.exe2345.exedw20.exedw20.exeexplorer.exe

description	pid	process
Token: SeDebugPrivilege	1132	7500ce0c4a42420ae8e50c241974c891.exe
Token: SeDebugPrivilege	2036	2345.exe
Token: SeRestorePrivilege	4404	dw20.exe
Token: SeBackupPrivilege	4404	dw20.exe
Token: SeBackupPrivilege	4404	dw20.exe
Token: SeBackupPrivilege	4404	dw20.exe
Token: SeBackupPrivilege	3892	dw20.exe
Token: SeBackupPrivilege	3892	dw20.exe
Token: SeDebugPrivilege	3960	explorer.exe
Token: SeDebugPrivilege	3960	explorer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

winupdate.exe

pid process

3720 winupdate.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

svchost.exe

pid process

2636 svchost.exe

pid	process
3720	winupdate.exe

pid	process
2636	svchost.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

7500ce0c4a42420ae8e50c241974c891.exe2345.execsc.exewinupdate.exe

description	pid	process	target process
PID 1132 wrote to memory of 2036	1132	7500ce0c4a42420ae8e50c241974c891.exe	2345.exe
PID 1132 wrote to memory of 2036	1132	7500ce0c4a42420ae8e50c241974c891.exe	2345.exe
PID 1132 wrote to memory of 2036	1132	7500ce0c4a42420ae8e50c241974c891.exe	2345.exe
PID 2036 wrote to memory of 4276	2036	2345.exe	csc.exe
PID 2036 wrote to memory of 4276	2036	2345.exe	csc.exe
PID 2036 wrote to memory of 4276	2036	2345.exe	csc.exe
PID 4276 wrote to memory of 4596	4276	csc.exe	cvtres.exe
PID 4276 wrote to memory of 4596	4276	csc.exe	cvtres.exe
PID 4276 wrote to memory of 4596	4276	csc.exe	cvtres.exe
PID 2036 wrote to memory of 3720	2036	2345.exe	winupdate.exe
PID 2036 wrote to memory of 3720	2036	2345.exe	winupdate.exe
PID 2036 wrote to memory of 3720	2036	2345.exe	winupdate.exe
PID 2036 wrote to memory of 3720	2036	2345.exe	winupdate.exe
PID 2036 wrote to memory of 3720	2036	2345.exe	winupdate.exe
PID 2036 wrote to memory of 3720	2036	2345.exe	winupdate.exe
PID 2036 wrote to memory of 3720	2036	2345.exe	winupdate.exe
PID 2036 wrote to memory of 3720	2036	2345.exe	winupdate.exe
PID 2036 wrote to memory of 3720	2036	2345.exe	winupdate.exe
PID 2036 wrote to memory of 3720	2036	2345.exe	winupdate.exe
PID 2036 wrote to memory of 3720	2036	2345.exe	winupdate.exe
PID 2036 wrote to memory of 3720	2036	2345.exe	winupdate.exe
PID 2036 wrote to memory of 3720	2036	2345.exe	winupdate.exe
PID 2036 wrote to memory of 4404	2036	2345.exe	dw20.exe
PID 2036 wrote to memory of 4404	2036	2345.exe	dw20.exe
PID 2036 wrote to memory of 4404	2036	2345.exe	dw20.exe
PID 1132 wrote to memory of 3892	1132	7500ce0c4a42420ae8e50c241974c891.exe	dw20.exe
PID 1132 wrote to memory of 3892	1132	7500ce0c4a42420ae8e50c241974c891.exe	dw20.exe
PID 1132 wrote to memory of 3892	1132	7500ce0c4a42420ae8e50c241974c891.exe	dw20.exe
PID 3720 wrote to memory of 3292	3720	winupdate.exe	Explorer.EXE
PID 3720 wrote to memory of 3292	3720	winupdate.exe	Explorer.EXE
PID 3720 wrote to memory of 3292	3720	winupdate.exe	Explorer.EXE
PID 3720 wrote to memory of 3292	3720	winupdate.exe	Explorer.EXE
PID 3720 wrote to memory of 3292	3720	winupdate.exe	Explorer.EXE
PID 3720 wrote to memory of 3292	3720	winupdate.exe	Explorer.EXE
PID 3720 wrote to memory of 3292	3720	winupdate.exe	Explorer.EXE
PID 3720 wrote to memory of 3292	3720	winupdate.exe	Explorer.EXE
PID 3720 wrote to memory of 3292	3720	winupdate.exe	Explorer.EXE
PID 3720 wrote to memory of 3292	3720	winupdate.exe	Explorer.EXE
PID 3720 wrote to memory of 3292	3720	winupdate.exe	Explorer.EXE
PID 3720 wrote to memory of 3292	3720	winupdate.exe	Explorer.EXE
PID 3720 wrote to memory of 3292	3720	winupdate.exe	Explorer.EXE
PID 3720 wrote to memory of 3292	3720	winupdate.exe	Explorer.EXE
PID 3720 wrote to memory of 3292	3720	winupdate.exe	Explorer.EXE
PID 3720 wrote to memory of 3292	3720	winupdate.exe	Explorer.EXE
PID 3720 wrote to memory of 3292	3720	winupdate.exe	Explorer.EXE
PID 3720 wrote to memory of 3292	3720	winupdate.exe	Explorer.EXE
PID 3720 wrote to memory of 3292	3720	winupdate.exe	Explorer.EXE
PID 3720 wrote to memory of 3292	3720	winupdate.exe	Explorer.EXE
PID 3720 wrote to memory of 3292	3720	winupdate.exe	Explorer.EXE
PID 3720 wrote to memory of 3292	3720	winupdate.exe	Explorer.EXE
PID 3720 wrote to memory of 3292	3720	winupdate.exe	Explorer.EXE
PID 3720 wrote to memory of 3292	3720	winupdate.exe	Explorer.EXE
PID 3720 wrote to memory of 3292	3720	winupdate.exe	Explorer.EXE
PID 3720 wrote to memory of 3292	3720	winupdate.exe	Explorer.EXE
PID 3720 wrote to memory of 3292	3720	winupdate.exe	Explorer.EXE
PID 3720 wrote to memory of 3292	3720	winupdate.exe	Explorer.EXE
PID 3720 wrote to memory of 3292	3720	winupdate.exe	Explorer.EXE
PID 3720 wrote to memory of 3292	3720	winupdate.exe	Explorer.EXE
PID 3720 wrote to memory of 3292	3720	winupdate.exe	Explorer.EXE
PID 3720 wrote to memory of 3292	3720	winupdate.exe	Explorer.EXE
PID 3720 wrote to memory of 3292	3720	winupdate.exe	Explorer.EXE
PID 3720 wrote to memory of 3292	3720	winupdate.exe	Explorer.EXE
PID 3720 wrote to memory of 3292	3720	winupdate.exe	Explorer.EXE
PID 3720 wrote to memory of 3292	3720	winupdate.exe	Explorer.EXE

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3292

C:\Users\Admin\AppData\Local\Temp\7500ce0c4a42420ae8e50c241974c891.exe
"C:\Users\Admin\AppData\Local\Temp\7500ce0c4a42420ae8e50c241974c891.exe"
2⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1132

C:\Users\Admin\AppData\Local\Temp\2345.exe
"C:\Users\Admin\AppData\Local\Temp\2345.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2036

C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe
"C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\nxg897m9.cmdline"
4⤵
- Suspicious use of WriteProcessMemory
PID:4276

C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES77A2.tmp" "c:\Users\Admin\AppData\Local\Temp\CSC77A1.tmp"
5⤵
PID:4596

C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
dw20.exe -x -s 968
4⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
PID:4404

C:\Users\Admin\AppData\Roaming\winupdate.exe
C:\Users\Admin\AppData\Roaming\winupdate.exe
4⤵
- Adds policy Run key to start application
- Modifies Installed Components in the registry
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:3720

C:\Windows\SysWOW64\explorer.exe
explorer.exe
5⤵
- Modifies Installed Components in the registry
PID:2336

C:\Windows\SysWOW64\explorer.exe
explorer.exe
5⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:3960

C:\Winbooter\svchost.exe
"C:\Winbooter\svchost.exe"
6⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:2636

C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
dw20.exe -x -s 2180
3⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
PID:3892

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Defense Evasion

Modify Registry

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

System Information Discovery