remcos | cf88f2729ca4bdcad4c33dde11bba72edb4fc0cc5eed18d2d0a762364b2a1404

Virtualization/Sandbox Evasion

Processes:

svchost.exeProduct Catalogue.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Oracle\VirtualBox Guest Additions	svchost.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Oracle\VirtualBox Guest Additions	Product Catalogue.exe

Looks for VMWare Tools registry key 2 TTPs 2 IoCs

evasion

Query Registry

Virtualization/Sandbox Evasion

Processes:

Product Catalogue.exesvchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SOFTWARE\VMware, Inc.\VMware Tools	Product Catalogue.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\VMware, Inc.\VMware Tools	svchost.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\TaskKill\ImagePath = "\\??\\C:\\Users\\Admin\\AppData\\Local\\Temp\\Иисус.sys"	svchost.exe

Checks BIOS information in registry 2 TTPs 4 IoCs

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

Query Registry

System Information Discovery

Processes:

Product Catalogue.exesvchost.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	Product Catalogue.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	Product Catalogue.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	svchost.exe

Executes dropped EXE 1 IoCs

Processes:

svchost.exe

pid process

1356 svchost.exe
Loads dropped DLL 2 IoCs

Processes:

cmd.exe

pid process

1916 cmd.exe
1916 cmd.exe

pid	process
1356	svchost.exe

pid	process
1916	cmd.exe
1916	cmd.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Product Catalogue.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1563773381-2037468142-1146002597-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "\"C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe\""	Product Catalogue.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

Processes:

svchost.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	svchost.exe

Maps connected drives based on registry 3 TTPs 4 IoCs

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

Query Registry

Peripheral Device Discovery

T1120

System Information Discovery

Processes:

svchost.exeProduct Catalogue.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	Product Catalogue.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	Product Catalogue.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	svchost.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

svchost.exe

description pid process target process

PID 1356 set thread context of 456 1356 svchost.exe jsc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

340 schtasks.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1500 timeout.exe

description	pid	process	target process
PID 1356 set thread context of 456	1356	svchost.exe	jsc.exe

pid	process
340	schtasks.exe

pid	process
1500	timeout.exe

Suspicious behavior: EnumeratesProcesses 24 IoCs

Processes:

Product Catalogue.exepowershell.exesvchost.exe

pid	process
2000	Product Catalogue.exe
1636	powershell.exe
1356	svchost.exe
1356	svchost.exe
1356	svchost.exe
1356	svchost.exe
1356	svchost.exe
1356	svchost.exe
1356	svchost.exe
1356	svchost.exe
1356	svchost.exe
1356	svchost.exe
1356	svchost.exe
1356	svchost.exe
1356	svchost.exe
1356	svchost.exe
1356	svchost.exe
1356	svchost.exe
1356	svchost.exe
1356	svchost.exe
1356	svchost.exe
1356	svchost.exe
1356	svchost.exe
1356	svchost.exe

Suspicious behavior: LoadsDriver 1 IoCs

Processes:

svchost.exe

pid process

1356 svchost.exe

pid	process
1356	svchost.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

Product Catalogue.exesvchost.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	2000	Product Catalogue.exe
Token: SeDebugPrivilege	1356	svchost.exe
Token: SeDebugPrivilege	1356	svchost.exe
Token: SeLoadDriverPrivilege	1356	svchost.exe
Token: SeDebugPrivilege	1636	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

jsc.exe

pid process

456 jsc.exe

pid	process
456	jsc.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

Product Catalogue.execmd.execmd.exesvchost.exe

description	pid	process	target process
PID 2000 wrote to memory of 668	2000	Product Catalogue.exe	cmd.exe
PID 2000 wrote to memory of 668	2000	Product Catalogue.exe	cmd.exe
PID 2000 wrote to memory of 668	2000	Product Catalogue.exe	cmd.exe
PID 2000 wrote to memory of 1916	2000	Product Catalogue.exe	cmd.exe
PID 2000 wrote to memory of 1916	2000	Product Catalogue.exe	cmd.exe
PID 2000 wrote to memory of 1916	2000	Product Catalogue.exe	cmd.exe
PID 668 wrote to memory of 340	668	cmd.exe	schtasks.exe
PID 668 wrote to memory of 340	668	cmd.exe	schtasks.exe
PID 668 wrote to memory of 340	668	cmd.exe	schtasks.exe
PID 1916 wrote to memory of 1500	1916	cmd.exe	timeout.exe
PID 1916 wrote to memory of 1500	1916	cmd.exe	timeout.exe
PID 1916 wrote to memory of 1500	1916	cmd.exe	timeout.exe
PID 1916 wrote to memory of 1356	1916	cmd.exe	svchost.exe
PID 1916 wrote to memory of 1356	1916	cmd.exe	svchost.exe
PID 1916 wrote to memory of 1356	1916	cmd.exe	svchost.exe
PID 1356 wrote to memory of 1636	1356	svchost.exe	powershell.exe
PID 1356 wrote to memory of 1636	1356	svchost.exe	powershell.exe
PID 1356 wrote to memory of 1636	1356	svchost.exe	powershell.exe
PID 1356 wrote to memory of 1156	1356	svchost.exe	ComSvcConfig.exe
PID 1356 wrote to memory of 1156	1356	svchost.exe	ComSvcConfig.exe
PID 1356 wrote to memory of 1156	1356	svchost.exe	ComSvcConfig.exe
PID 1356 wrote to memory of 1872	1356	svchost.exe	EdmGen.exe
PID 1356 wrote to memory of 1872	1356	svchost.exe	EdmGen.exe
PID 1356 wrote to memory of 1872	1356	svchost.exe	EdmGen.exe
PID 1356 wrote to memory of 964	1356	svchost.exe	SMSvcHost.exe
PID 1356 wrote to memory of 964	1356	svchost.exe	SMSvcHost.exe
PID 1356 wrote to memory of 964	1356	svchost.exe	SMSvcHost.exe
PID 1356 wrote to memory of 1392	1356	svchost.exe	AddInUtil.exe
PID 1356 wrote to memory of 1392	1356	svchost.exe	AddInUtil.exe
PID 1356 wrote to memory of 1392	1356	svchost.exe	AddInUtil.exe
PID 1356 wrote to memory of 1368	1356	svchost.exe	aspnet_regsql.exe
PID 1356 wrote to memory of 1368	1356	svchost.exe	aspnet_regsql.exe
PID 1356 wrote to memory of 1368	1356	svchost.exe	aspnet_regsql.exe
PID 1356 wrote to memory of 848	1356	svchost.exe	aspnet_compiler.exe
PID 1356 wrote to memory of 848	1356	svchost.exe	aspnet_compiler.exe
PID 1356 wrote to memory of 848	1356	svchost.exe	aspnet_compiler.exe
PID 1356 wrote to memory of 1908	1356	svchost.exe	AddInProcess.exe
PID 1356 wrote to memory of 1908	1356	svchost.exe	AddInProcess.exe
PID 1356 wrote to memory of 1908	1356	svchost.exe	AddInProcess.exe
PID 1356 wrote to memory of 1932	1356	svchost.exe	aspnet_regbrowsers.exe
PID 1356 wrote to memory of 1932	1356	svchost.exe	aspnet_regbrowsers.exe
PID 1356 wrote to memory of 1932	1356	svchost.exe	aspnet_regbrowsers.exe
PID 1356 wrote to memory of 1896	1356	svchost.exe	AppLaunch.exe
PID 1356 wrote to memory of 1896	1356	svchost.exe	AppLaunch.exe
PID 1356 wrote to memory of 1896	1356	svchost.exe	AppLaunch.exe
PID 1356 wrote to memory of 1940	1356	svchost.exe	ngen.exe
PID 1356 wrote to memory of 1940	1356	svchost.exe	ngen.exe
PID 1356 wrote to memory of 1940	1356	svchost.exe	ngen.exe
PID 1356 wrote to memory of 1948	1356	svchost.exe	cvtres.exe
PID 1356 wrote to memory of 1948	1356	svchost.exe	cvtres.exe
PID 1356 wrote to memory of 1948	1356	svchost.exe	cvtres.exe
PID 1356 wrote to memory of 456	1356	svchost.exe	jsc.exe
PID 1356 wrote to memory of 456	1356	svchost.exe	jsc.exe
PID 1356 wrote to memory of 456	1356	svchost.exe	jsc.exe
PID 1356 wrote to memory of 456	1356	svchost.exe	jsc.exe
PID 1356 wrote to memory of 456	1356	svchost.exe	jsc.exe
PID 1356 wrote to memory of 456	1356	svchost.exe	jsc.exe
PID 1356 wrote to memory of 456	1356	svchost.exe	jsc.exe
PID 1356 wrote to memory of 456	1356	svchost.exe	jsc.exe
PID 1356 wrote to memory of 456	1356	svchost.exe	jsc.exe
PID 1356 wrote to memory of 456	1356	svchost.exe	jsc.exe
PID 1356 wrote to memory of 456	1356	svchost.exe	jsc.exe
PID 1356 wrote to memory of 456	1356	svchost.exe	jsc.exe
PID 1356 wrote to memory of 456	1356	svchost.exe	jsc.exe

System policy modification 1 TTPs 1 IoCs
evasion

Modify Registry
T1112

Processes:

svchost.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" svchost.exe
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

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	svchost.exe

C:\Users\Admin\AppData\Local\Temp\Product Catalogue.exe
"C:\Users\Admin\AppData\Local\Temp\Product Catalogue.exe"
1⤵
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Adds Run key to start application
- Maps connected drives based on registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2000

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"' & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:668

C:\Windows\system32\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"'
3⤵
- Creates scheduled task(s)
PID:340

C:\Windows\system32\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp39F5.tmp.bat""
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1916

C:\Windows\system32\timeout.exe
timeout 3
3⤵
- Delays execution with timeout.exe
PID:1500

C:\Users\Admin\AppData\Roaming\svchost.exe
"C:\Users\Admin\AppData\Roaming\svchost.exe"
3⤵
- UAC bypass
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Sets service image path in registry
- Checks BIOS information in registry
- Executes dropped EXE
- Checks whether UAC is enabled
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: LoadsDriver
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1356

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\svchost.exe" -Force
4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1636

C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ComSvcConfig.exe
"C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ComSvcConfig.exe"
4⤵
PID:1156

C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_regsql.exe
"C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_regsql.exe"
4⤵
PID:1368

C:\Windows\Microsoft.NET\Framework64\v4.0.30319\AddInUtil.exe
"C:\Windows\Microsoft.NET\Framework64\v4.0.30319\AddInUtil.exe"
4⤵
PID:1392

C:\Windows\Microsoft.NET\Framework64\v4.0.30319\SMSvcHost.exe
"C:\Windows\Microsoft.NET\Framework64\v4.0.30319\SMSvcHost.exe"
4⤵
PID:964

C:\Windows\Microsoft.NET\Framework64\v4.0.30319\EdmGen.exe
"C:\Windows\Microsoft.NET\Framework64\v4.0.30319\EdmGen.exe"
4⤵
PID:1872

C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_regbrowsers.exe
"C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_regbrowsers.exe"
4⤵
PID:1932

C:\Windows\Microsoft.NET\Framework64\v4.0.30319\AppLaunch.exe
"C:\Windows\Microsoft.NET\Framework64\v4.0.30319\AppLaunch.exe"
4⤵
PID:1896

C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ngen.exe
"C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ngen.exe"
4⤵
PID:1940

C:\Windows\Microsoft.NET\Framework64\v4.0.30319\AddInProcess.exe
"C:\Windows\Microsoft.NET\Framework64\v4.0.30319\AddInProcess.exe"
4⤵
PID:1908

C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_compiler.exe
"C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_compiler.exe"
4⤵
PID:848

C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
"C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe"
4⤵
PID:1948

C:\Windows\Microsoft.NET\Framework64\v4.0.30319\jsc.exe
"C:\Windows\Microsoft.NET\Framework64\v4.0.30319\jsc.exe"
4⤵
- Suspicious use of SetWindowsHookEx
PID:456

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

Scheduled Task

Privilege Escalation

Bypass User Account Control

Scheduled Task

Defense Evasion

Bypass User Account Control

1

T1088

Disabling Security Tools

Modify Registry

Virtualization/Sandbox Evasion

2

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

4

Virtualization/Sandbox Evasion

2