remcos | 55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.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	Synaptics.exe

Executes dropped EXE 5 IoCs

pid	Process
2380	._cache_55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe
2500	Synaptics.exe
3744	Synaptics.exe
4508	Synaptics.exe
3720	._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"	55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2328 set thread context of 4400	2328	55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe	103
PID 2500 set thread context of 4508	2500	Synaptics.exe	117

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	Synaptics.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	._cache_Synaptics.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.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	Synaptics.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.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	55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	._cache_55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.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 opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.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
3672	schtasks.exe
4620	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
548	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
2328	55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe
2328	55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe
2328	55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe
2328	55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe
3252	powershell.exe
1444	powershell.exe
2328	55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe
3252	powershell.exe
2328	55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe
1444	powershell.exe
2500	Synaptics.exe
2500	Synaptics.exe
2500	Synaptics.exe
2500	Synaptics.exe
4372	powershell.exe
2500	Synaptics.exe
2500	Synaptics.exe
1972	powershell.exe
2500	Synaptics.exe
4372	powershell.exe
1972	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2328	55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe
Token: SeDebugPrivilege	3252	powershell.exe
Token: SeDebugPrivilege	1444	powershell.exe
Token: SeDebugPrivilege	2500	Synaptics.exe
Token: SeDebugPrivilege	4372	powershell.exe
Token: SeDebugPrivilege	1972	powershell.exe

Suspicious use of SetWindowsHookEx 5 IoCs

pid	Process
2380	._cache_55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe
548	EXCEL.EXE
548	EXCEL.EXE
548	EXCEL.EXE
548	EXCEL.EXE

Suspicious use of WriteProcessMemory 52 IoCs

description	pid	Process	procid_target
PID 2328 wrote to memory of 3252	2328	55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe	97
PID 2328 wrote to memory of 3252	2328	55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe	97
PID 2328 wrote to memory of 3252	2328	55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe	97
PID 2328 wrote to memory of 1444	2328	55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe	99
PID 2328 wrote to memory of 1444	2328	55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe	99
PID 2328 wrote to memory of 1444	2328	55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe	99
PID 2328 wrote to memory of 3672	2328	55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe	101
PID 2328 wrote to memory of 3672	2328	55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe	101
PID 2328 wrote to memory of 3672	2328	55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe	101
PID 2328 wrote to memory of 4400	2328	55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe	103
PID 2328 wrote to memory of 4400	2328	55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe	103
PID 2328 wrote to memory of 4400	2328	55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe	103
PID 2328 wrote to memory of 4400	2328	55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe	103
PID 2328 wrote to memory of 4400	2328	55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe	103
PID 2328 wrote to memory of 4400	2328	55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe	103
PID 2328 wrote to memory of 4400	2328	55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe	103
PID 2328 wrote to memory of 4400	2328	55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe	103
PID 2328 wrote to memory of 4400	2328	55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe	103
PID 2328 wrote to memory of 4400	2328	55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe	103
PID 2328 wrote to memory of 4400	2328	55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe	103
PID 4400 wrote to memory of 2380	4400	55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe	104
PID 4400 wrote to memory of 2380	4400	55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe	104
PID 4400 wrote to memory of 2380	4400	55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe	104
PID 4400 wrote to memory of 2500	4400	55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe	105
PID 4400 wrote to memory of 2500	4400	55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe	105
PID 4400 wrote to memory of 2500	4400	55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe	105
PID 2500 wrote to memory of 4372	2500	Synaptics.exe	110
PID 2500 wrote to memory of 4372	2500	Synaptics.exe	110
PID 2500 wrote to memory of 4372	2500	Synaptics.exe	110
PID 2500 wrote to memory of 1972	2500	Synaptics.exe	112
PID 2500 wrote to memory of 1972	2500	Synaptics.exe	112
PID 2500 wrote to memory of 1972	2500	Synaptics.exe	112
PID 2500 wrote to memory of 4620	2500	Synaptics.exe	113
PID 2500 wrote to memory of 4620	2500	Synaptics.exe	113
PID 2500 wrote to memory of 4620	2500	Synaptics.exe	113
PID 2500 wrote to memory of 3744	2500	Synaptics.exe	116
PID 2500 wrote to memory of 3744	2500	Synaptics.exe	116
PID 2500 wrote to memory of 3744	2500	Synaptics.exe	116
PID 2500 wrote to memory of 4508	2500	Synaptics.exe	117
PID 2500 wrote to memory of 4508	2500	Synaptics.exe	117
PID 2500 wrote to memory of 4508	2500	Synaptics.exe	117
PID 2500 wrote to memory of 4508	2500	Synaptics.exe	117
PID 2500 wrote to memory of 4508	2500	Synaptics.exe	117
PID 2500 wrote to memory of 4508	2500	Synaptics.exe	117
PID 2500 wrote to memory of 4508	2500	Synaptics.exe	117
PID 2500 wrote to memory of 4508	2500	Synaptics.exe	117
PID 2500 wrote to memory of 4508	2500	Synaptics.exe	117
PID 2500 wrote to memory of 4508	2500	Synaptics.exe	117
PID 2500 wrote to memory of 4508	2500	Synaptics.exe	117
PID 4508 wrote to memory of 3720	4508	Synaptics.exe	118
PID 4508 wrote to memory of 3720	4508	Synaptics.exe	118
PID 4508 wrote to memory of 3720	4508	Synaptics.exe	118

C:\Users\Admin\AppData\Local\Temp\55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe
"C:\Users\Admin\AppData\Local\Temp\55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.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:2328
- 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\55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3252
- 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:1444
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\BLznCuyzwk" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB98C.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:3672
- C:\Users\Admin\AppData\Local\Temp\55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe
  "C:\Users\Admin\AppData\Local\Temp\55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.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:4400
- - C:\Users\Admin\AppData\Local\Temp\._cache_55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe
    "C:\Users\Admin\AppData\Local\Temp\._cache_55e6b37884aefead44fa7aef72a71797e3eb0f1070815bbf3c6a46e5e8fd2903N.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:2380
- - 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:2500
  - - 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:4372
  - - 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:1972
  - - C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\BLznCuyzwk" /XML "C:\Users\Admin\AppData\Local\Temp\tmp148D.tmp"
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:4620
  - - C:\ProgramData\Synaptics\Synaptics.exe
      "C:\ProgramData\Synaptics\Synaptics.exe"
      4⤵
      Executes dropped EXE
      PID:3744
  - - 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:4508
    - - 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:3720

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:548

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