remcos | 17b4d4ca21f00476cc685afc5d3e50c05dee6cb254bed429993ee57750abf6be

Bypass User Account Control

T1088

Disabling Security Tools

Modify Registry

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

Windows security bypass 2 TTPs 2 IoCs

Disabling Security Tools

Modify Registry

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Roaming\svchost.exe = "0"	svchost.exe

Looks for VirtualBox Guest Additions in registry 2 TTPs 2 IoCs

Query Registry

Virtualization/Sandbox Evasion

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

Looks for VMWare Tools registry key 2 TTPs 2 IoCs

Query Registry

Virtualization/Sandbox Evasion

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

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

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	svchost.exe
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

Checks computer location settings 2 TTPs 2 IoCs

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

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Control Panel\International\Geo\Nation	Product Catalogue.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Control Panel\International\Geo\Nation	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4580	svchost.exe

Windows security modification 2 TTPs 3 IoCs

Disabling Security Tools

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Roaming\svchost.exe = "0"	svchost.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths	svchost.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions	svchost.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\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

System Information Discovery

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

description	ioc	Process
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
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	svchost.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4580 set thread context of 4344	4580	svchost.exe	99

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

pid	Process
3480	schtasks.exe

Delays execution with timeout.exe 1 IoCs

pid	Process
4716	timeout.exe

Suspicious behavior: EnumeratesProcesses 36 IoCs

pid	Process
1120	Product Catalogue.exe
1120	Product Catalogue.exe
1120	Product Catalogue.exe
1120	Product Catalogue.exe
1120	Product Catalogue.exe
1120	Product Catalogue.exe
1120	Product Catalogue.exe
1120	Product Catalogue.exe
1120	Product Catalogue.exe
1120	Product Catalogue.exe
1120	Product Catalogue.exe
1120	Product Catalogue.exe
1120	Product Catalogue.exe
1120	Product Catalogue.exe
1120	Product Catalogue.exe
1120	Product Catalogue.exe
1120	Product Catalogue.exe
1120	Product Catalogue.exe
1120	Product Catalogue.exe
1120	Product Catalogue.exe
1120	Product Catalogue.exe
1120	Product Catalogue.exe
1120	Product Catalogue.exe
3952	powershell.exe
4580	svchost.exe
4580	svchost.exe
4580	svchost.exe
4580	svchost.exe
4580	svchost.exe
4580	svchost.exe
4580	svchost.exe
4580	svchost.exe
4580	svchost.exe
4580	svchost.exe
4580	svchost.exe
3952	powershell.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
4580	svchost.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	1120	Product Catalogue.exe
Token: SeDebugPrivilege	4580	svchost.exe
Token: SeDebugPrivilege	4580	svchost.exe
Token: SeLoadDriverPrivilege	4580	svchost.exe
Token: SeDebugPrivilege	3952	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4344	AddInProcess32.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 1120 wrote to memory of 4888	1120	Product Catalogue.exe	85
PID 1120 wrote to memory of 4888	1120	Product Catalogue.exe	85
PID 1120 wrote to memory of 3156	1120	Product Catalogue.exe	87
PID 1120 wrote to memory of 3156	1120	Product Catalogue.exe	87
PID 4888 wrote to memory of 3480	4888	cmd.exe	89
PID 4888 wrote to memory of 3480	4888	cmd.exe	89
PID 3156 wrote to memory of 4716	3156	cmd.exe	90
PID 3156 wrote to memory of 4716	3156	cmd.exe	90
PID 3156 wrote to memory of 4580	3156	cmd.exe	94
PID 3156 wrote to memory of 4580	3156	cmd.exe	94
PID 4580 wrote to memory of 3952	4580	svchost.exe	95
PID 4580 wrote to memory of 3952	4580	svchost.exe	95
PID 4580 wrote to memory of 1876	4580	svchost.exe	97
PID 4580 wrote to memory of 1876	4580	svchost.exe	97
PID 4580 wrote to memory of 1972	4580	svchost.exe	98
PID 4580 wrote to memory of 1972	4580	svchost.exe	98
PID 4580 wrote to memory of 632	4580	svchost.exe	103
PID 4580 wrote to memory of 632	4580	svchost.exe	103
PID 4580 wrote to memory of 736	4580	svchost.exe	102
PID 4580 wrote to memory of 736	4580	svchost.exe	102
PID 4580 wrote to memory of 2212	4580	svchost.exe	101
PID 4580 wrote to memory of 2212	4580	svchost.exe	101
PID 4580 wrote to memory of 4344	4580	svchost.exe	99
PID 4580 wrote to memory of 4344	4580	svchost.exe	99
PID 4580 wrote to memory of 4344	4580	svchost.exe	99
PID 4580 wrote to memory of 4344	4580	svchost.exe	99
PID 4580 wrote to memory of 4344	4580	svchost.exe	99
PID 4580 wrote to memory of 4344	4580	svchost.exe	99
PID 4580 wrote to memory of 4344	4580	svchost.exe	99
PID 4580 wrote to memory of 4344	4580	svchost.exe	99
PID 4580 wrote to memory of 4344	4580	svchost.exe	99
PID 4580 wrote to memory of 4344	4580	svchost.exe	99
PID 4580 wrote to memory of 4344	4580	svchost.exe	99
PID 4580 wrote to memory of 4344	4580	svchost.exe	99

System policy modification 1 TTPs 1 IoCs

Modify Registry

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

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
- Checks computer location settings
- Adds Run key to start application
- Maps connected drives based on registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1120
- 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:4888
- - 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:3480
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp7227.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3156
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:4716
- - C:\Users\Admin\AppData\Roaming\svchost.exe
    "C:\Users\Admin\AppData\Roaming\svchost.exe"
    3⤵
    - UAC bypass
    - Windows security 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
    - Checks computer location settings
    - Executes dropped EXE
    - Windows security modification
    - 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:4580
  - - 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:3952
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\RegAsm.exe"
      4⤵
      PID:1876
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_regbrowsers.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_regbrowsers.exe"
      4⤵
      PID:1972
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\AddInProcess32.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\AddInProcess32.exe"
      4⤵
      Suspicious use of SetWindowsHookEx
      PID:4344
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe"
      4⤵
      PID:2212
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_wp.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_wp.exe"
      4⤵
      PID:736
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\InstallUtil.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\InstallUtil.exe"
      4⤵
      PID:632

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

Privilege Escalation

Bypass User Account Control

T1088

Scheduled Task

Defense Evasion

Bypass User Account Control

T1088

Disabling Security Tools

Modify Registry

Virtualization/Sandbox Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

System Information Discovery

Virtualization/Sandbox Evasion