remcos | a466e005e900687100fef0e6f22cbab359eff61ed4721d2faa0759ea0b59203a

Processes:

reg.exereg.exereg.exereg.exe

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

Adds policy Run key to start application 2 TTPs 6 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

Processes:

SecurityHealthSystray.exeiexplore.exestub.exe

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	SecurityHealthSystray.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\SecurityHealthSystray.exe = "\"C:\\ProgramData\\SecurityHealthSystray\\SecurityHealthSystray.exe\""	SecurityHealthSystray.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	iexplore.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\SecurityHealthSystray.exe = "\"C:\\ProgramData\\SecurityHealthSystray\\SecurityHealthSystray.exe\""	iexplore.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	stub.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\SecurityHealthSystray.exe = "\"C:\\ProgramData\\SecurityHealthSystray\\SecurityHealthSystray.exe\""	stub.exe

Checks computer location settings 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

stub.exeWScript.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	stub.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	WScript.exe

Deletes itself 1 IoCs

Processes:

WScript.exe

pid	Process
4048	WScript.exe

Executes dropped EXE 2 IoCs

Processes:

SecurityHealthSystray.exesus.exe

pid	Process
4612	SecurityHealthSystray.exe
4404	sus.exe

Adds Run key to start application 2 TTPs 6 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

Processes:

stub.exeSecurityHealthSystray.exeiexplore.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SecurityHealthSystray.exe = "\"C:\\ProgramData\\SecurityHealthSystray\\SecurityHealthSystray.exe\""	stub.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\SecurityHealthSystray.exe = "\"C:\\ProgramData\\SecurityHealthSystray\\SecurityHealthSystray.exe\""	stub.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SecurityHealthSystray.exe = "\"C:\\ProgramData\\SecurityHealthSystray\\SecurityHealthSystray.exe\""	SecurityHealthSystray.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\SecurityHealthSystray.exe = "\"C:\\ProgramData\\SecurityHealthSystray\\SecurityHealthSystray.exe\""	SecurityHealthSystray.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SecurityHealthSystray.exe = "\"C:\\ProgramData\\SecurityHealthSystray\\SecurityHealthSystray.exe\""	iexplore.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\SecurityHealthSystray.exe = "\"C:\\ProgramData\\SecurityHealthSystray\\SecurityHealthSystray.exe\""	iexplore.exe

Drops file in System32 directory 1 IoCs

Processes:

sus.exe

description	ioc	Process
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\SecurityHealthSystray\SecurityHealthSystray.exe	sus.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

SecurityHealthSystray.exeiexplore.exesus.exe

description	pid	Process	procid_target
PID 4612 set thread context of 3184	4612	SecurityHealthSystray.exe	91
PID 3184 set thread context of 1404	3184	iexplore.exe	96
PID 4404 set thread context of 4680	4404	sus.exe	123

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 17 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

Processes:

iexplore.execmd.execmd.execmd.exeschtasks.exesus.exereg.exeWScript.execmd.exereg.execmd.exestub.exereg.exereg.exeschtasks.execmd.exeSecurityHealthSystray.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iexplore.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sus.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	stub.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SecurityHealthSystray.exe

Modifies data under HKEY_USERS 3 IoCs

Processes:

sus.exe

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Rmc-SBO0KA\	sus.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Rmc-SBO0KA\exepath = 25426b8942f942f6012adce9fe35d8b89a94d5d96f7354f72f415375bbfb209830cbe0e1770a0348141d7cce59f6	sus.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Rmc-SBO0KA\Inj = "1"	sus.exe

Modifies registry class 1 IoCs

Processes:

stub.exe

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000_Classes\Local Settings	stub.exe

Modifies registry key 1 TTPs 4 IoCs

Modify Registry

Processes:

reg.exereg.exereg.exereg.exe

pid	Process
1136	reg.exe
2472	reg.exe
748	reg.exe
116	reg.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

persistence execution

Scheduled Task

Processes:

schtasks.exe

pid	Process
780	schtasks.exe

Suspicious behavior: MapViewOfSection 3 IoCs

Processes:

SecurityHealthSystray.exeiexplore.exesus.exe

pid	Process
4612	SecurityHealthSystray.exe
3184	iexplore.exe
4404	sus.exe

Suspicious use of WriteProcessMemory 54 IoCs

Processes:

stub.execmd.exeWScript.execmd.exeSecurityHealthSystray.execmd.exeiexplore.execmd.execmd.exesus.execmd.exe

description	pid	Process	procid_target
PID 1132 wrote to memory of 432	1132	stub.exe	83
PID 1132 wrote to memory of 432	1132	stub.exe	83
PID 1132 wrote to memory of 432	1132	stub.exe	83
PID 432 wrote to memory of 1136	432	cmd.exe	85
PID 432 wrote to memory of 1136	432	cmd.exe	85
PID 432 wrote to memory of 1136	432	cmd.exe	85
PID 1132 wrote to memory of 4048	1132	stub.exe	86
PID 1132 wrote to memory of 4048	1132	stub.exe	86
PID 1132 wrote to memory of 4048	1132	stub.exe	86
PID 4048 wrote to memory of 448	4048	WScript.exe	87
PID 4048 wrote to memory of 448	4048	WScript.exe	87
PID 4048 wrote to memory of 448	4048	WScript.exe	87
PID 448 wrote to memory of 4612	448	cmd.exe	89
PID 448 wrote to memory of 4612	448	cmd.exe	89
PID 448 wrote to memory of 4612	448	cmd.exe	89
PID 4612 wrote to memory of 1328	4612	SecurityHealthSystray.exe	90
PID 4612 wrote to memory of 1328	4612	SecurityHealthSystray.exe	90
PID 4612 wrote to memory of 1328	4612	SecurityHealthSystray.exe	90
PID 4612 wrote to memory of 3184	4612	SecurityHealthSystray.exe	91
PID 4612 wrote to memory of 3184	4612	SecurityHealthSystray.exe	91
PID 4612 wrote to memory of 3184	4612	SecurityHealthSystray.exe	91
PID 4612 wrote to memory of 3184	4612	SecurityHealthSystray.exe	91
PID 1328 wrote to memory of 2472	1328	cmd.exe	94
PID 1328 wrote to memory of 2472	1328	cmd.exe	94
PID 1328 wrote to memory of 2472	1328	cmd.exe	94
PID 3184 wrote to memory of 1036	3184	iexplore.exe	93
PID 3184 wrote to memory of 1036	3184	iexplore.exe	93
PID 3184 wrote to memory of 1036	3184	iexplore.exe	93
PID 3184 wrote to memory of 1404	3184	iexplore.exe	96
PID 3184 wrote to memory of 1404	3184	iexplore.exe	96
PID 3184 wrote to memory of 1404	3184	iexplore.exe	96
PID 3184 wrote to memory of 1404	3184	iexplore.exe	96
PID 1036 wrote to memory of 748	1036	cmd.exe	97
PID 1036 wrote to memory of 748	1036	cmd.exe	97
PID 1036 wrote to memory of 748	1036	cmd.exe	97
PID 3184 wrote to memory of 4892	3184	iexplore.exe	117
PID 3184 wrote to memory of 4892	3184	iexplore.exe	117
PID 3184 wrote to memory of 4892	3184	iexplore.exe	117
PID 4892 wrote to memory of 780	4892	cmd.exe	119
PID 4892 wrote to memory of 780	4892	cmd.exe	119
PID 4892 wrote to memory of 780	4892	cmd.exe	119
PID 4892 wrote to memory of 1148	4892	cmd.exe	120
PID 4892 wrote to memory of 1148	4892	cmd.exe	120
PID 4892 wrote to memory of 1148	4892	cmd.exe	120
PID 4404 wrote to memory of 1584	4404	sus.exe	122
PID 4404 wrote to memory of 1584	4404	sus.exe	122
PID 4404 wrote to memory of 1584	4404	sus.exe	122
PID 4404 wrote to memory of 4680	4404	sus.exe	123
PID 4404 wrote to memory of 4680	4404	sus.exe	123
PID 4404 wrote to memory of 4680	4404	sus.exe	123
PID 4404 wrote to memory of 4680	4404	sus.exe	123
PID 1584 wrote to memory of 116	1584	cmd.exe	125
PID 1584 wrote to memory of 116	1584	cmd.exe	125
PID 1584 wrote to memory of 116	1584	cmd.exe	125

C:\Users\Admin\AppData\Local\Temp\stub.exe
"C:\Users\Admin\AppData\Local\Temp\stub.exe"
1⤵
- Adds policy Run key to start application
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1132
- C:\Windows\SysWOW64\cmd.exe
  /k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:432
- - C:\Windows\SysWOW64\reg.exe
    C:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
    3⤵
    - UAC bypass
    - System Location Discovery: System Language Discovery
    - Modifies registry key
    PID:1136
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
  2⤵
  - Checks computer location settings
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4048
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c "C:\ProgramData\SecurityHealthSystray\SecurityHealthSystray.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:448
  - - C:\ProgramData\SecurityHealthSystray\SecurityHealthSystray.exe
      C:\ProgramData\SecurityHealthSystray\SecurityHealthSystray.exe
      4⤵
      Adds policy Run key to start application
      Executes dropped EXE
      Adds Run key to start application
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious behavior: MapViewOfSection
      Suspicious use of WriteProcessMemory
      PID:4612
    - - C:\Windows\SysWOW64\cmd.exe
        
        /k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
        5⤵
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:1328
      - C:\Windows\SysWOW64\reg.exe
        
        C:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
        6⤵
        UAC bypass
        System Location Discovery: System Language Discovery
        Modifies registry key
        
        PID:2472
    - - \??\c:\program files (x86)\internet explorer\iexplore.exe
        
        "c:\program files (x86)\internet explorer\iexplore.exe"
        5⤵
        Adds policy Run key to start application
        Adds Run key to start application
        Suspicious use of SetThreadContext
        System Location Discovery: System Language Discovery
        Suspicious behavior: MapViewOfSection
        Suspicious use of WriteProcessMemory
        
        PID:3184
      - C:\Windows\SysWOW64\cmd.exe
        
        /k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
        6⤵
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:1036
        
        C:\Windows\SysWOW64\reg.exe
        
        C:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
        7⤵
        UAC bypass
        System Location Discovery: System Language Discovery
        Modifies registry key
        
        PID:748
      - C:\Windows\SysWOW64\svchost.exe
        
        svchost.exe
        6⤵
        
        PID:1404
      - C:\Windows\SysWOW64\cmd.exe
        
        cmd.exe
        6⤵
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:4892
        
        C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "bootsystem" /tr "C:\ProgramData\sus.exe" /sc onstart /ru "SYSTEM" /rl HIGHEST
        7⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:780
        
        C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /run /tn "bootsystem"
        7⤵
        System Location Discovery: System Language Discovery
        
        PID:1148

C:\ProgramData\sus.exe
C:\ProgramData\sus.exe
1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4404
- C:\Windows\SysWOW64\cmd.exe
  /k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1584
- - C:\Windows\SysWOW64\reg.exe
    C:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
    3⤵
    - UAC bypass
    - System Location Discovery: System Language Discovery
    - Modifies registry key
    PID:116
- \??\c:\program files (x86)\internet explorer\iexplore.exe
  "c:\program files (x86)\internet explorer\iexplore.exe"
  2⤵
  PID:4680

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

T1053

Scheduled Task

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

T1053

Scheduled Task

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry