remcos | 4c0d83ed0acd8e00e0b21af3e85cc9358e1187cd449f857da0c6407f35687c38

General

Target
2026-10-08_bf912570b15bd822a9936bf996325f05_elex_remcos_remocs_wannacry.exe
Size 92KB
Sample261009-e7ey9ast3n
SHA256 4c0d83ed0acd8e00e0b21af3e85cc9358e1187cd449f857da0c6407f35687c38
MD5 bf912570b15bd822a9936bf996325f05
SHA1 078fd1f86b2885a5e54c8653f56450afd2743c03
SHA512 2f02f4add329e1f989eb2951d5a7c264de988fdbacc47b4e98c56463dc493c55749308a9bdc6b2ccecb3d0b51b283a5fa6e37e0e3a042bba5592816460880985
SSDEEP 1536:ohhW0YTGZWdVseJxaM9kraLdV2QkQ1TbPX8IHOCkIsI4ESTNTh9E+JP19qkPDkh5:uhzYTGWVvJ8f2v1TbPzuMsIFSTNThy+2
TLSH
T1A793D813FA4AD0B2E42591F145426F31CEBCBC3636496173D38FCA41AD79892D426EBE
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

host discovery execution remcos persistence rat

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

surfrides.co:443
kevinkiely.me:443
ato.tw:443
saostar.me:443
8jikk.pw:443
xx88.me.uk:443
j88slot1.com:443

Attributes

audio_folder
audio
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
5
copy_file
vremea.me.exe
copy_folder
remcos
delete_file
true
hide_file
true
hide_keylog_file
false
install_flag
true
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
remcos_clubskjlibmmfta
screenshot_crypt
false
screenshot_flag
true
screenshot_folder
Screens
screenshot_path
%AppData%
screenshot_time
1
startup_value
remcos
take_screenshot_option
false
take_screenshot_time
5

Signatures

Family: Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

Modifies WinLogon for persistence 2 TTPs 6 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "C:\\WINDOWS\\system32\\userinit.exe, \"C:\\Users\\Admin\\AppData\\Roaming\\remcos\\vremea.me.exe\""	2026-10-08_bf912570b15bd822a9936bf996325f05_elex_remcos_remocs_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Users\\Admin\\AppData\\Roaming\\remcos\\vremea.me.exe\""	vremea.me.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "C:\\WINDOWS\\system32\\userinit.exe, \"C:\\Users\\Admin\\AppData\\Roaming\\remcos\\vremea.me.exe\""	vremea.me.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Users\\Admin\\AppData\\Roaming\\remcos\\vremea.me.exe\""	vremea.me.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "C:\\WINDOWS\\system32\\userinit.exe, \"C:\\Users\\Admin\\AppData\\Roaming\\remcos\\vremea.me.exe\""	vremea.me.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Users\\Admin\\AppData\\Roaming\\remcos\\vremea.me.exe\""	2026-10-08_bf912570b15bd822a9936bf996325f05_elex_remcos_remocs_wannacry.exe

detects Windows exceutables potentially bypassing UAC using eventvwr.exe 2 IoCs

resource	yara_rule
behavioral1/files/0x0008000000024572-6.dat	INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
behavioral1/memory/3348-8-0x0000000000400000-0x0000000000417000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer

Adds policy Run key to start application 2 TTPs 6 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\remcos\\vremea.me.exe\""	vremea.me.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	vremea.me.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\remcos\\vremea.me.exe\""	vremea.me.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	2026-10-08_bf912570b15bd822a9936bf996325f05_elex_remcos_remocs_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\remcos\\vremea.me.exe\""	2026-10-08_bf912570b15bd822a9936bf996325f05_elex_remcos_remocs_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	vremea.me.exe

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-681733028-2344970462-962213935-1000\Control Panel\International\Geo\Nation	2026-10-08_bf912570b15bd822a9936bf996325f05_elex_remcos_remocs_wannacry.exe

Executes dropped EXE 2 IoCs

pid	Process
5728	vremea.me.exe
3720	vremea.me.exe

Adds Run key to start application 2 TTPs 6 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-681733028-2344970462-962213935-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\remcos\\vremea.me.exe\""	vremea.me.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\remcos\\vremea.me.exe\""	vremea.me.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-681733028-2344970462-962213935-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\remcos\\vremea.me.exe\""	2026-10-08_bf912570b15bd822a9936bf996325f05_elex_remcos_remocs_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\remcos\\vremea.me.exe\""	2026-10-08_bf912570b15bd822a9936bf996325f05_elex_remcos_remocs_wannacry.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-681733028-2344970462-962213935-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\remcos\\vremea.me.exe\""	vremea.me.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\remcos\\vremea.me.exe\""	vremea.me.exe

Modifies WinLogon 2 TTPs 3 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\	2026-10-08_bf912570b15bd822a9936bf996325f05_elex_remcos_remocs_wannacry.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\	vremea.me.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\	vremea.me.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 5728 set thread context of 3348	5728	vremea.me.exe	97
PID 3720 set thread context of 1492	3720	vremea.me.exe	99

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

System Information Discovery
T1082

Executes a command shell one-liner 1 TTPs 1 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
1540	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 6 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	2026-10-08_bf912570b15bd822a9936bf996325f05_elex_remcos_remocs_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vremea.me.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vremea.me.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iexplore.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
5696	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
5696	PING.EXE

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: 33	4816	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	4816	AUDIODG.EXE

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2964 wrote to memory of 1540	2964	2026-10-08_bf912570b15bd822a9936bf996325f05_elex_remcos_remocs_wannacry.exe	90
PID 1540 wrote to memory of 5696	1540	cmd.exe	92
PID 5728 wrote to memory of 3348	5728	vremea.me.exe	97
PID 5728 wrote to memory of 3348	5728	vremea.me.exe	97
PID 5728 wrote to memory of 3348	5728	vremea.me.exe	97
PID 5728 wrote to memory of 3348	5728	vremea.me.exe	97
PID 5728 wrote to memory of 3348	5728	vremea.me.exe	97
PID 5728 wrote to memory of 3348	5728	vremea.me.exe	97
PID 1540 wrote to memory of 3720	1540	cmd.exe	98
PID 3720 wrote to memory of 1492	3720	vremea.me.exe	99
PID 3720 wrote to memory of 1492	3720	vremea.me.exe	99
PID 3720 wrote to memory of 1492	3720	vremea.me.exe	99
PID 3720 wrote to memory of 1492	3720	vremea.me.exe	99
PID 3720 wrote to memory of 1492	3720	vremea.me.exe	99
PID 3720 wrote to memory of 1492	3720	vremea.me.exe	99

C:\Users\Admin\AppData\Local\Temp\2026-10-08_bf912570b15bd822a9936bf996325f05_elex_remcos_remocs_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-10-08_bf912570b15bd822a9936bf996325f05_elex_remcos_remocs_wannacry.exe"
1⤵
- Modifies WinLogon for persistence
- Adds policy Run key to start application
- Checks computer location settings
- Adds Run key to start application
- Modifies WinLogon
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2964
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\install.bat" "
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1540
- - C:\Windows\SysWOW64\PING.EXE
    PING 127.0.0.1 -n 2
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:5696
- - C:\Users\Admin\AppData\Roaming\remcos\vremea.me.exe
    "C:\Users\Admin\AppData\Roaming\remcos\vremea.me.exe"
    3⤵
    - Modifies WinLogon for persistence
    - Adds policy Run key to start application
    - Executes dropped EXE
    - Adds Run key to start application
    - Modifies WinLogon
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3720
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
      4⤵
      System Location Discovery: System Language Discovery
      PID:1492

C:\Users\Admin\AppData\Roaming\remcos\vremea.me.exe
"C:\Users\Admin\AppData\Roaming\remcos\vremea.me.exe"
1⤵
- Modifies WinLogon for persistence
- Adds policy Run key to start application
- Executes dropped EXE
- Adds Run key to start application
- Modifies WinLogon
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5728
- C:\Program Files (x86)\Internet Explorer\iexplore.exe
  "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
  2⤵
  PID:3348

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x4c4 0x514
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4816

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Windows Command Shell

1

T1059.003

Persistence

Boot or Logon Autostart Execution

4

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Winlogon Helper DLL

2

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

4

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Winlogon Helper DLL

2

T1547.004

Defense Evasion

Modify Registry

4

T1112

Credential Access

Discovery

Query Registry

1

T1012

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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install.bat

Path C:\Users\Admin\AppData\Local\Temp\install.bat
Size 219B
SHA256 d39c877a506813a9b883f0afe175c37d0111b43596ee59f4ac9532d405bcb4d7
MD5 03374d4638ca2a30daa251807a87c840
SHA1 44295982f3b660bf3d3b66ab4752055a9c5da7b2
SHA512 d78c074877beb08c3c8f530870ab83b2523e47d1f0b64dd1a167a4d295ed28f602b199a547aa515a3e65a40cd5dbf909d3c2b5e07d14926986e3787ab6114596
TLSH
T1DAD023524651C5FE141D66370AF97E4DD021D5D4791A3645971B459C34CDC14F4C1509
MD5 SHA1 SHA512 TLSH

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vremea.me.exe

Path C:\Users\Admin\AppData\Roaming\remcos\vremea.me.exe
Size 92KB
SHA256 4c0d83ed0acd8e00e0b21af3e85cc9358e1187cd449f857da0c6407f35687c38
MD5 bf912570b15bd822a9936bf996325f05
SHA1 078fd1f86b2885a5e54c8653f56450afd2743c03
SHA512 2f02f4add329e1f989eb2951d5a7c264de988fdbacc47b4e98c56463dc493c55749308a9bdc6b2ccecb3d0b51b283a5fa6e37e0e3a042bba5592816460880985
SSDEEP 1536:ohhW0YTGZWdVseJxaM9kraLdV2QkQ1TbPX8IHOCkIsI4ESTNTh9E+JP19qkPDkh5:uhzYTGWVvJ8f2v1TbPzuMsIFSTNThy+2
TLSH
T1A793D813FA4AD0B2E42591F145426F31CEBCBC3636496173D38FCA41AD79892D426EBE
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/3348-8-0x0000000000400000-0x0000000000417000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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