remcos | 1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	Synaptics.exe
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	Synaptics.exe
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe

Executes dropped EXE 4 IoCs

pid	Process
3500	._cache_1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe
2284	Synaptics.exe
4540	Synaptics.exe
1468	._cache_Synaptics.exe

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\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Synaptics Pointing Device Driver = "C:\\ProgramData\\Synaptics\\Synaptics.exe"	1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2760 set thread context of 3752	2760	1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe	90
PID 2284 set thread context of 4540	2284	Synaptics.exe	104

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 12 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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Synaptics.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	._cache_1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Synaptics.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	._cache_Synaptics.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Checks processor information in registry 2 TTPs 3 IoCs

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

Query Registry

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	Synaptics.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

pid	Process
3004	schtasks.exe
3444	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3060	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 19 IoCs

pid	Process
2760	1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe
2760	1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe
2760	1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe
2760	1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe
4924	powershell.exe
1100	powershell.exe
2760	1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe
2760	1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe
1100	powershell.exe
4924	powershell.exe
2284	Synaptics.exe
2284	Synaptics.exe
2284	Synaptics.exe
2284	Synaptics.exe
3584	powershell.exe
2284	Synaptics.exe
556	powershell.exe
556	powershell.exe
3584	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2760	1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe
Token: SeDebugPrivilege	4924	powershell.exe
Token: SeDebugPrivilege	1100	powershell.exe
Token: SeDebugPrivilege	2284	Synaptics.exe
Token: SeDebugPrivilege	3584	powershell.exe
Token: SeDebugPrivilege	556	powershell.exe

Suspicious use of SetWindowsHookEx 5 IoCs

pid	Process
3500	._cache_1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe
3060	EXCEL.EXE
3060	EXCEL.EXE
3060	EXCEL.EXE
3060	EXCEL.EXE

Suspicious use of WriteProcessMemory 49 IoCs

description	pid	Process	procid_target
PID 2760 wrote to memory of 4924	2760	1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe	84
PID 2760 wrote to memory of 4924	2760	1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe	84
PID 2760 wrote to memory of 4924	2760	1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe	84
PID 2760 wrote to memory of 1100	2760	1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe	86
PID 2760 wrote to memory of 1100	2760	1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe	86
PID 2760 wrote to memory of 1100	2760	1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe	86
PID 2760 wrote to memory of 3004	2760	1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe	88
PID 2760 wrote to memory of 3004	2760	1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe	88
PID 2760 wrote to memory of 3004	2760	1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe	88
PID 2760 wrote to memory of 3752	2760	1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe	90
PID 2760 wrote to memory of 3752	2760	1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe	90
PID 2760 wrote to memory of 3752	2760	1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe	90
PID 2760 wrote to memory of 3752	2760	1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe	90
PID 2760 wrote to memory of 3752	2760	1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe	90
PID 2760 wrote to memory of 3752	2760	1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe	90
PID 2760 wrote to memory of 3752	2760	1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe	90
PID 2760 wrote to memory of 3752	2760	1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe	90
PID 2760 wrote to memory of 3752	2760	1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe	90
PID 2760 wrote to memory of 3752	2760	1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe	90
PID 2760 wrote to memory of 3752	2760	1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe	90
PID 3752 wrote to memory of 3500	3752	1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe	91
PID 3752 wrote to memory of 3500	3752	1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe	91
PID 3752 wrote to memory of 3500	3752	1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe	91
PID 3752 wrote to memory of 2284	3752	1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe	92
PID 3752 wrote to memory of 2284	3752	1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe	92
PID 3752 wrote to memory of 2284	3752	1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe	92
PID 2284 wrote to memory of 3584	2284	Synaptics.exe	98
PID 2284 wrote to memory of 3584	2284	Synaptics.exe	98
PID 2284 wrote to memory of 3584	2284	Synaptics.exe	98
PID 2284 wrote to memory of 556	2284	Synaptics.exe	100
PID 2284 wrote to memory of 556	2284	Synaptics.exe	100
PID 2284 wrote to memory of 556	2284	Synaptics.exe	100
PID 2284 wrote to memory of 3444	2284	Synaptics.exe	102
PID 2284 wrote to memory of 3444	2284	Synaptics.exe	102
PID 2284 wrote to memory of 3444	2284	Synaptics.exe	102
PID 2284 wrote to memory of 4540	2284	Synaptics.exe	104
PID 2284 wrote to memory of 4540	2284	Synaptics.exe	104
PID 2284 wrote to memory of 4540	2284	Synaptics.exe	104
PID 2284 wrote to memory of 4540	2284	Synaptics.exe	104
PID 2284 wrote to memory of 4540	2284	Synaptics.exe	104
PID 2284 wrote to memory of 4540	2284	Synaptics.exe	104
PID 2284 wrote to memory of 4540	2284	Synaptics.exe	104
PID 2284 wrote to memory of 4540	2284	Synaptics.exe	104
PID 2284 wrote to memory of 4540	2284	Synaptics.exe	104
PID 2284 wrote to memory of 4540	2284	Synaptics.exe	104
PID 2284 wrote to memory of 4540	2284	Synaptics.exe	104
PID 4540 wrote to memory of 1468	4540	Synaptics.exe	105
PID 4540 wrote to memory of 1468	4540	Synaptics.exe	105
PID 4540 wrote to memory of 1468	4540	Synaptics.exe	105

C:\Users\Admin\AppData\Local\Temp\1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe
"C:\Users\Admin\AppData\Local\Temp\1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2760
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4924
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\BLznCuyzwk.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1100
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\BLznCuyzwk" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB7.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:3004
- C:\Users\Admin\AppData\Local\Temp\1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe
  "C:\Users\Admin\AppData\Local\Temp\1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:3752
- - C:\Users\Admin\AppData\Local\Temp\._cache_1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe
    "C:\Users\Admin\AppData\Local\Temp\._cache_1c9e17585bde50908ce24e1e0d83a1f97617ae28923a8e3a7b56b338ebc37e92N.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:3500
- - C:\ProgramData\Synaptics\Synaptics.exe
    "C:\ProgramData\Synaptics\Synaptics.exe" InjUpdate
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2284
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\ProgramData\Synaptics\Synaptics.exe"
      4⤵
      Command and Scripting Interpreter: PowerShell
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3584
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\BLznCuyzwk.exe"
      4⤵
      Command and Scripting Interpreter: PowerShell
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:556
  - - C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\BLznCuyzwk" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5E09.tmp"
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:3444
  - - C:\ProgramData\Synaptics\Synaptics.exe
      "C:\ProgramData\Synaptics\Synaptics.exe"
      4⤵
      Checks computer location settings
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Modifies registry class
      Suspicious use of WriteProcessMemory
      PID:4540
    - - C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe
        
        "C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe"
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        
        PID:1468

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" /automation -Embedding
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:3060

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

System Information Discovery