remcos | edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016ef

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	Synaptics.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	Synaptics.exe

Executes dropped EXE 4 IoCs

pid	Process
4444	._cache_edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe
2476	Synaptics.exe
2208	Synaptics.exe
3780	._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"	edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1912 set thread context of 3392	1912	edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe	95
PID 2476 set thread context of 2208	2476	Synaptics.exe	106

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	edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.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	edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.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	._cache_Synaptics.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	._cache_edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Synaptics.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	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 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\	edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.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
3880	schtasks.exe
740	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1556	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 18 IoCs

pid	Process
1912	edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe
1912	edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe
1912	edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe
1912	edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe
4852	powershell.exe
1296	powershell.exe
1912	edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe
4852	powershell.exe
1296	powershell.exe
2476	Synaptics.exe
2476	Synaptics.exe
2476	Synaptics.exe
2476	Synaptics.exe
4312	powershell.exe
1632	powershell.exe
2476	Synaptics.exe
4312	powershell.exe
1632	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	1912	edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe
Token: SeDebugPrivilege	4852	powershell.exe
Token: SeDebugPrivilege	1296	powershell.exe
Token: SeDebugPrivilege	2476	Synaptics.exe
Token: SeDebugPrivilege	1632	powershell.exe
Token: SeDebugPrivilege	4312	powershell.exe

Suspicious use of SetWindowsHookEx 9 IoCs

pid	Process
4444	._cache_edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe
1556	EXCEL.EXE
1556	EXCEL.EXE
1556	EXCEL.EXE
1556	EXCEL.EXE
1556	EXCEL.EXE
1556	EXCEL.EXE
1556	EXCEL.EXE
1556	EXCEL.EXE

Suspicious use of WriteProcessMemory 49 IoCs

description	pid	Process	procid_target
PID 1912 wrote to memory of 4852	1912	edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe	89
PID 1912 wrote to memory of 4852	1912	edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe	89
PID 1912 wrote to memory of 4852	1912	edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe	89
PID 1912 wrote to memory of 1296	1912	edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe	91
PID 1912 wrote to memory of 1296	1912	edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe	91
PID 1912 wrote to memory of 1296	1912	edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe	91
PID 1912 wrote to memory of 3880	1912	edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe	93
PID 1912 wrote to memory of 3880	1912	edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe	93
PID 1912 wrote to memory of 3880	1912	edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe	93
PID 1912 wrote to memory of 3392	1912	edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe	95
PID 1912 wrote to memory of 3392	1912	edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe	95
PID 1912 wrote to memory of 3392	1912	edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe	95
PID 1912 wrote to memory of 3392	1912	edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe	95
PID 1912 wrote to memory of 3392	1912	edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe	95
PID 1912 wrote to memory of 3392	1912	edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe	95
PID 1912 wrote to memory of 3392	1912	edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe	95
PID 1912 wrote to memory of 3392	1912	edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe	95
PID 1912 wrote to memory of 3392	1912	edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe	95
PID 1912 wrote to memory of 3392	1912	edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe	95
PID 1912 wrote to memory of 3392	1912	edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe	95
PID 3392 wrote to memory of 4444	3392	edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe	96
PID 3392 wrote to memory of 4444	3392	edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe	96
PID 3392 wrote to memory of 4444	3392	edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe	96
PID 3392 wrote to memory of 2476	3392	edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe	97
PID 3392 wrote to memory of 2476	3392	edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe	97
PID 3392 wrote to memory of 2476	3392	edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe	97
PID 2476 wrote to memory of 1632	2476	Synaptics.exe	100
PID 2476 wrote to memory of 1632	2476	Synaptics.exe	100
PID 2476 wrote to memory of 1632	2476	Synaptics.exe	100
PID 2476 wrote to memory of 4312	2476	Synaptics.exe	102
PID 2476 wrote to memory of 4312	2476	Synaptics.exe	102
PID 2476 wrote to memory of 4312	2476	Synaptics.exe	102
PID 2476 wrote to memory of 740	2476	Synaptics.exe	103
PID 2476 wrote to memory of 740	2476	Synaptics.exe	103
PID 2476 wrote to memory of 740	2476	Synaptics.exe	103
PID 2476 wrote to memory of 2208	2476	Synaptics.exe	106
PID 2476 wrote to memory of 2208	2476	Synaptics.exe	106
PID 2476 wrote to memory of 2208	2476	Synaptics.exe	106
PID 2476 wrote to memory of 2208	2476	Synaptics.exe	106
PID 2476 wrote to memory of 2208	2476	Synaptics.exe	106
PID 2476 wrote to memory of 2208	2476	Synaptics.exe	106
PID 2476 wrote to memory of 2208	2476	Synaptics.exe	106
PID 2476 wrote to memory of 2208	2476	Synaptics.exe	106
PID 2476 wrote to memory of 2208	2476	Synaptics.exe	106
PID 2476 wrote to memory of 2208	2476	Synaptics.exe	106
PID 2476 wrote to memory of 2208	2476	Synaptics.exe	106
PID 2208 wrote to memory of 3780	2208	Synaptics.exe	107
PID 2208 wrote to memory of 3780	2208	Synaptics.exe	107
PID 2208 wrote to memory of 3780	2208	Synaptics.exe	107

C:\Users\Admin\AppData\Local\Temp\edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe
"C:\Users\Admin\AppData\Local\Temp\edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.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:1912
- 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\edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4852
- 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:1296
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\BLznCuyzwk" /XML "C:\Users\Admin\AppData\Local\Temp\tmpBEEB.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:3880
- C:\Users\Admin\AppData\Local\Temp\edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe
  "C:\Users\Admin\AppData\Local\Temp\edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.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:3392
- - C:\Users\Admin\AppData\Local\Temp\._cache_edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe
    "C:\Users\Admin\AppData\Local\Temp\._cache_edfcaaa04c894eba334c016b931a4c9cd82285e3b29adea40a0b8fcf406016efN.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:4444
- - 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:2476
  - - 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:1632
  - - 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:4312
  - - C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\BLznCuyzwk" /XML "C:\Users\Admin\AppData\Local\Temp\tmp16DE.tmp"
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:740
  - - 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:2208
    - - 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:3780

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:1556

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