remcos | 89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	Synaptics.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	Synaptics.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe

Executes dropped EXE 5 IoCs

pid	Process
1508	._cache_89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe
2836	Synaptics.exe
3800	Synaptics.exe
2300	Synaptics.exe
1048	._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"	89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2972 set thread context of 916	2972	89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe	95
PID 2836 set thread context of 2300	2836	Synaptics.exe	107

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	89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	._cache_89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.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	powershell.exe
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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Synaptics.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	._cache_Synaptics.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\	89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.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
4396	schtasks.exe
2244	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
4044	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
2972	89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe
2972	89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe
2972	89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe
2972	89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe
3972	powershell.exe
2972	89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe
2372	powershell.exe
2972	89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe
3972	powershell.exe
2372	powershell.exe
2836	Synaptics.exe
2836	Synaptics.exe
2836	Synaptics.exe
2836	Synaptics.exe
656	powershell.exe
2836	Synaptics.exe
2836	Synaptics.exe
3840	powershell.exe
2836	Synaptics.exe
656	powershell.exe
3840	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2972	89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe
Token: SeDebugPrivilege	3972	powershell.exe
Token: SeDebugPrivilege	2372	powershell.exe
Token: SeDebugPrivilege	2836	Synaptics.exe
Token: SeDebugPrivilege	656	powershell.exe
Token: SeDebugPrivilege	3840	powershell.exe

Suspicious use of SetWindowsHookEx 7 IoCs

pid	Process
1508	._cache_89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe
4044	EXCEL.EXE
4044	EXCEL.EXE
4044	EXCEL.EXE
4044	EXCEL.EXE
4044	EXCEL.EXE
4044	EXCEL.EXE

Suspicious use of WriteProcessMemory 52 IoCs

description	pid	Process	procid_target
PID 2972 wrote to memory of 3972	2972	89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe	89
PID 2972 wrote to memory of 3972	2972	89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe	89
PID 2972 wrote to memory of 3972	2972	89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe	89
PID 2972 wrote to memory of 2372	2972	89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe	91
PID 2972 wrote to memory of 2372	2972	89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe	91
PID 2972 wrote to memory of 2372	2972	89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe	91
PID 2972 wrote to memory of 4396	2972	89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe	93
PID 2972 wrote to memory of 4396	2972	89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe	93
PID 2972 wrote to memory of 4396	2972	89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe	93
PID 2972 wrote to memory of 916	2972	89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe	95
PID 2972 wrote to memory of 916	2972	89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe	95
PID 2972 wrote to memory of 916	2972	89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe	95
PID 2972 wrote to memory of 916	2972	89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe	95
PID 2972 wrote to memory of 916	2972	89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe	95
PID 2972 wrote to memory of 916	2972	89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe	95
PID 2972 wrote to memory of 916	2972	89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe	95
PID 2972 wrote to memory of 916	2972	89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe	95
PID 2972 wrote to memory of 916	2972	89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe	95
PID 2972 wrote to memory of 916	2972	89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe	95
PID 2972 wrote to memory of 916	2972	89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe	95
PID 916 wrote to memory of 1508	916	89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe	96
PID 916 wrote to memory of 1508	916	89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe	96
PID 916 wrote to memory of 1508	916	89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe	96
PID 916 wrote to memory of 2836	916	89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe	97
PID 916 wrote to memory of 2836	916	89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe	97
PID 916 wrote to memory of 2836	916	89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe	97
PID 2836 wrote to memory of 656	2836	Synaptics.exe	100
PID 2836 wrote to memory of 656	2836	Synaptics.exe	100
PID 2836 wrote to memory of 656	2836	Synaptics.exe	100
PID 2836 wrote to memory of 3840	2836	Synaptics.exe	102
PID 2836 wrote to memory of 3840	2836	Synaptics.exe	102
PID 2836 wrote to memory of 3840	2836	Synaptics.exe	102
PID 2836 wrote to memory of 2244	2836	Synaptics.exe	104
PID 2836 wrote to memory of 2244	2836	Synaptics.exe	104
PID 2836 wrote to memory of 2244	2836	Synaptics.exe	104
PID 2836 wrote to memory of 3800	2836	Synaptics.exe	106
PID 2836 wrote to memory of 3800	2836	Synaptics.exe	106
PID 2836 wrote to memory of 3800	2836	Synaptics.exe	106
PID 2836 wrote to memory of 2300	2836	Synaptics.exe	107
PID 2836 wrote to memory of 2300	2836	Synaptics.exe	107
PID 2836 wrote to memory of 2300	2836	Synaptics.exe	107
PID 2836 wrote to memory of 2300	2836	Synaptics.exe	107
PID 2836 wrote to memory of 2300	2836	Synaptics.exe	107
PID 2836 wrote to memory of 2300	2836	Synaptics.exe	107
PID 2836 wrote to memory of 2300	2836	Synaptics.exe	107
PID 2836 wrote to memory of 2300	2836	Synaptics.exe	107
PID 2836 wrote to memory of 2300	2836	Synaptics.exe	107
PID 2836 wrote to memory of 2300	2836	Synaptics.exe	107
PID 2836 wrote to memory of 2300	2836	Synaptics.exe	107
PID 2300 wrote to memory of 1048	2300	Synaptics.exe	108
PID 2300 wrote to memory of 1048	2300	Synaptics.exe	108
PID 2300 wrote to memory of 1048	2300	Synaptics.exe	108

C:\Users\Admin\AppData\Local\Temp\89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe
"C:\Users\Admin\AppData\Local\Temp\89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.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:2972
- 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\89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3972
- 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:2372
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\BLznCuyzwk" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1316.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:4396
- C:\Users\Admin\AppData\Local\Temp\89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe
  "C:\Users\Admin\AppData\Local\Temp\89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.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:916
- - C:\Users\Admin\AppData\Local\Temp\._cache_89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe
    "C:\Users\Admin\AppData\Local\Temp\._cache_89a0505f3a57c93a50a75439cdec93d6a5d217a3e74b7a86f98c8b228c8957ba.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:1508
- - 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:2836
  - - 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:656
  - - 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:3840
  - - C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\BLznCuyzwk" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7980.tmp"
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:2244
  - - C:\ProgramData\Synaptics\Synaptics.exe
      "C:\ProgramData\Synaptics\Synaptics.exe"
      4⤵
      Executes dropped EXE
      PID:3800
  - - 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:2300
    - - 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:1048

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:4044

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