remcos | 47ae8e5d41bbd1eb506a303584b124c3c8a1caeac4564252fa78856190f0f628

Analysis

max time kernel
119s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
12-12-2024 04:18

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General

Target

47ae8e5d41bbd1eb506a303584b124c3c8a1caeac4564252fa78856190f0f628.exe
Size

469KB
MD5

87d7fffd5ec9e7bc817d31ce77dee415
SHA1

6cc44ccc0438c65cdef248cc6d76fc0d05e79222
SHA256

47ae8e5d41bbd1eb506a303584b124c3c8a1caeac4564252fa78856190f0f628
SHA512

1d2c6ec8676cb1cfbe37f808440287ea6a658d3f21829b5001c3c08a663722eb0537cc681a6faa7d39dc16a101fa2bbf55989a64a7c16143f11aa96033b886a5
SSDEEP

12288:Wmnk7iLJbpIpiRL6I2WhSKQ9ZsfZQSAn9:uiLJbpI7I2WhQqZ7A9

Score

10^/10

remcos rmx discovery evasion persistence rat trojan

Malware Config

Extracted

Family

remcos

Botnet

RMX

154.216.18.132:6868

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Remcos
delete_file
false
hide_file
true
hide_keylog_file
false
install_flag
true
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-8G0TND
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
take_screenshot_option
false
take_screenshot_time
5

Signatures

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

UAC bypass 3 TTPs 2 IoCs

evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

T1112

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

Adds policy Run key to start application 2 TTPs 4 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:\\ProgramData\\Remcos\\remcos.exe\""	47ae8e5d41bbd1eb506a303584b124c3c8a1caeac4564252fa78856190f0f628.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	remcos.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\Remcos = "\"C:\\ProgramData\\Remcos\\remcos.exe\""	remcos.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	47ae8e5d41bbd1eb506a303584b124c3c8a1caeac4564252fa78856190f0f628.exe

Executes dropped EXE 1 IoCs

pid	Process
2872	remcos.exe

Loads dropped DLL 2 IoCs

pid	Process
2080	cmd.exe
2080	cmd.exe

Adds Run key to start application 2 TTPs 4 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\Remcos = "\"C:\\ProgramData\\Remcos\\remcos.exe\""	47ae8e5d41bbd1eb506a303584b124c3c8a1caeac4564252fa78856190f0f628.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\ProgramData\\Remcos\\remcos.exe\""	remcos.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\ProgramData\\Remcos\\remcos.exe\""	remcos.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\ProgramData\\Remcos\\remcos.exe\""	47ae8e5d41bbd1eb506a303584b124c3c8a1caeac4564252fa78856190f0f628.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2872 set thread context of 1832	2872	remcos.exe	38

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 8 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	WScript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	remcos.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	47ae8e5d41bbd1eb506a303584b124c3c8a1caeac4564252fa78856190f0f628.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe

Modifies registry key 1 TTPs 2 IoCs

Modify Registry

T1112

pid	Process
2088	reg.exe
3012	reg.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2872	remcos.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2872	remcos.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2108 wrote to memory of 2388	2108	47ae8e5d41bbd1eb506a303584b124c3c8a1caeac4564252fa78856190f0f628.exe	30
PID 2108 wrote to memory of 2388	2108	47ae8e5d41bbd1eb506a303584b124c3c8a1caeac4564252fa78856190f0f628.exe	30
PID 2108 wrote to memory of 2388	2108	47ae8e5d41bbd1eb506a303584b124c3c8a1caeac4564252fa78856190f0f628.exe	30
PID 2108 wrote to memory of 2388	2108	47ae8e5d41bbd1eb506a303584b124c3c8a1caeac4564252fa78856190f0f628.exe	30
PID 2388 wrote to memory of 2088	2388	cmd.exe	32
PID 2388 wrote to memory of 2088	2388	cmd.exe	32
PID 2388 wrote to memory of 2088	2388	cmd.exe	32
PID 2388 wrote to memory of 2088	2388	cmd.exe	32
PID 2108 wrote to memory of 2508	2108	47ae8e5d41bbd1eb506a303584b124c3c8a1caeac4564252fa78856190f0f628.exe	33
PID 2108 wrote to memory of 2508	2108	47ae8e5d41bbd1eb506a303584b124c3c8a1caeac4564252fa78856190f0f628.exe	33
PID 2108 wrote to memory of 2508	2108	47ae8e5d41bbd1eb506a303584b124c3c8a1caeac4564252fa78856190f0f628.exe	33
PID 2108 wrote to memory of 2508	2108	47ae8e5d41bbd1eb506a303584b124c3c8a1caeac4564252fa78856190f0f628.exe	33
PID 2508 wrote to memory of 2080	2508	WScript.exe	34
PID 2508 wrote to memory of 2080	2508	WScript.exe	34
PID 2508 wrote to memory of 2080	2508	WScript.exe	34
PID 2508 wrote to memory of 2080	2508	WScript.exe	34
PID 2080 wrote to memory of 2872	2080	cmd.exe	36
PID 2080 wrote to memory of 2872	2080	cmd.exe	36
PID 2080 wrote to memory of 2872	2080	cmd.exe	36
PID 2080 wrote to memory of 2872	2080	cmd.exe	36
PID 2872 wrote to memory of 2376	2872	remcos.exe	37
PID 2872 wrote to memory of 2376	2872	remcos.exe	37
PID 2872 wrote to memory of 2376	2872	remcos.exe	37
PID 2872 wrote to memory of 2376	2872	remcos.exe	37
PID 2872 wrote to memory of 1832	2872	remcos.exe	38
PID 2872 wrote to memory of 1832	2872	remcos.exe	38
PID 2872 wrote to memory of 1832	2872	remcos.exe	38
PID 2872 wrote to memory of 1832	2872	remcos.exe	38
PID 2872 wrote to memory of 1832	2872	remcos.exe	38
PID 2376 wrote to memory of 3012	2376	cmd.exe	40
PID 2376 wrote to memory of 3012	2376	cmd.exe	40
PID 2376 wrote to memory of 3012	2376	cmd.exe	40
PID 2376 wrote to memory of 3012	2376	cmd.exe	40

C:\Users\Admin\AppData\Local\Temp\47ae8e5d41bbd1eb506a303584b124c3c8a1caeac4564252fa78856190f0f628.exe
"C:\Users\Admin\AppData\Local\Temp\47ae8e5d41bbd1eb506a303584b124c3c8a1caeac4564252fa78856190f0f628.exe"
1⤵
- Adds policy Run key to start application
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2108
- 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:2388
- - 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:2088
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2508
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c "C:\ProgramData\Remcos\remcos.exe"
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2080
  - - C:\ProgramData\Remcos\remcos.exe
      C:\ProgramData\Remcos\remcos.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: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of WriteProcessMemory
      PID:2872
    - - 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:2376
      - 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:3012
    - - \??\c:\program files (x86)\internet explorer\iexplore.exe
        
        "c:\program files (x86)\internet explorer\iexplore.exe"
        5⤵
        
        PID:1832

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\install.vbs

Filesize
386B

MD5
1ec6289c6fd4c2ded6b2836ed28cbeb5

SHA1
c4e08195e6c640eb8860acc03fda1d649b4fe070

SHA256
6efdc40f9eb217f879607614e928b65bff759e424f3efb31faceb2a043c32dc2

SHA512
20bc46f4dee22f75f15c402c7c2eaee60fff7dd92548050585571dcbefd59485cc249c06bc3f1aac7a138e5ae67c0c3918b46ffa24c8b0f1b092e2f6b6e21288

Download Submit
\ProgramData\Remcos\remcos.exe

Filesize
469KB

MD5
87d7fffd5ec9e7bc817d31ce77dee415

SHA1
6cc44ccc0438c65cdef248cc6d76fc0d05e79222

SHA256
47ae8e5d41bbd1eb506a303584b124c3c8a1caeac4564252fa78856190f0f628

SHA512
1d2c6ec8676cb1cfbe37f808440287ea6a658d3f21829b5001c3c08a663722eb0537cc681a6faa7d39dc16a101fa2bbf55989a64a7c16143f11aa96033b886a5

Download Submit
memory/1832-11-0x0000000000080000-0x00000000000FF000-memory.dmp

Filesize
508KB

Download
memory/1832-12-0x0000000000080000-0x00000000000FF000-memory.dmp

Filesize
508KB

Download
memory/1832-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download