remcos | dd65dd8dc6a7e07a80cef5710ea026d0a3dc0e4e3657111b82acbf65ffd845b6

General

Target

NEW ORDER- 4788467.exe
Size

908KB
MD5

1cb86400147c835af58017f0474c5bcc
SHA1

ac285cb623bf292341068dead954cfed9a1f8c81
SHA256

c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61
SHA512

ce74f39d092b13570f9387e5d43ced748dea9557e8887fc072694a2cf448b2c4cf741db3e76d551ebef3511b906ae1cbe0fe670f8968e51d1441982ec73b9b0c
SSDEEP

24576:Nqho7Y33wd4D5N4UmVFruPkMKXbY31qKblvh:y1Hwd4FN4UoFqjKXboTp5

Score

10^/10

remcos remotehost discovery execution persistence rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

206.189.218.238:4782

206.189.218.238:2286

206.189.218.238:3363

206.189.218.238:3386

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Remcos
delete_file
false
hide_file
false
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-NJK093
screenshot_crypt
false
screenshot_flag
true
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
1
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
Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
execution

PowerShell
T1059.001

Processes:

powershell.exepowershell.exe

pid process

1784 powershell.exe
2896 powershell.exe
Executes dropped EXE 2 IoCs

Processes:

remcos.exeremcos.exe

pid process

2168 remcos.exe
592 remcos.exe
Loads dropped DLL 1 IoCs

Processes:

NEW ORDER- 4788467.exe

pid process

2644 NEW ORDER- 4788467.exe

pid	process
1784	powershell.exe
2896	powershell.exe

pid	process
2168	remcos.exe
592	remcos.exe

pid	process
2644	NEW ORDER- 4788467.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

NEW ORDER- 4788467.exeremcos.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-NJK093 = "\"C:\\ProgramData\\Remcos\\remcos.exe\""	NEW ORDER- 4788467.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc-NJK093 = "\"C:\\ProgramData\\Remcos\\remcos.exe\""	remcos.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-NJK093 = "\"C:\\ProgramData\\Remcos\\remcos.exe\""	remcos.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc-NJK093 = "\"C:\\ProgramData\\Remcos\\remcos.exe\""	NEW ORDER- 4788467.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

NEW ORDER- 4788467.exeremcos.exe

description	pid	process	target process
PID 1064 set thread context of 2644	1064	NEW ORDER- 4788467.exe	NEW ORDER- 4788467.exe
PID 2168 set thread context of 592	2168	remcos.exe	remcos.exe

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

Processes:

NEW ORDER- 4788467.exeremcos.exepowershell.exeschtasks.exeremcos.exeNEW ORDER- 4788467.exepowershell.exeschtasks.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NEW ORDER- 4788467.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	remcos.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	remcos.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NEW ORDER- 4788467.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.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
T1053.005

Processes:

schtasks.exeschtasks.exe

pid process

2620 schtasks.exe
2240 schtasks.exe

pid	process
2620	schtasks.exe
2240	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

NEW ORDER- 4788467.exepowershell.exeremcos.exepowershell.exe

pid	process
1064	NEW ORDER- 4788467.exe
1064	NEW ORDER- 4788467.exe
1064	NEW ORDER- 4788467.exe
2896	powershell.exe
2168	remcos.exe
2168	remcos.exe
2168	remcos.exe
1784	powershell.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

NEW ORDER- 4788467.exepowershell.exeremcos.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	1064	NEW ORDER- 4788467.exe
Token: SeDebugPrivilege	2896	powershell.exe
Token: SeDebugPrivilege	2168	remcos.exe
Token: SeDebugPrivilege	1784	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

remcos.exe

pid process

592 remcos.exe

pid	process
592	remcos.exe

Suspicious use of WriteProcessMemory 46 IoCs

Processes:

NEW ORDER- 4788467.exeNEW ORDER- 4788467.exeremcos.exe

description	pid	process	target process
PID 1064 wrote to memory of 2896	1064	NEW ORDER- 4788467.exe	powershell.exe
PID 1064 wrote to memory of 2896	1064	NEW ORDER- 4788467.exe	powershell.exe
PID 1064 wrote to memory of 2896	1064	NEW ORDER- 4788467.exe	powershell.exe
PID 1064 wrote to memory of 2896	1064	NEW ORDER- 4788467.exe	powershell.exe
PID 1064 wrote to memory of 2620	1064	NEW ORDER- 4788467.exe	schtasks.exe
PID 1064 wrote to memory of 2620	1064	NEW ORDER- 4788467.exe	schtasks.exe
PID 1064 wrote to memory of 2620	1064	NEW ORDER- 4788467.exe	schtasks.exe
PID 1064 wrote to memory of 2620	1064	NEW ORDER- 4788467.exe	schtasks.exe
PID 1064 wrote to memory of 2644	1064	NEW ORDER- 4788467.exe	NEW ORDER- 4788467.exe
PID 1064 wrote to memory of 2644	1064	NEW ORDER- 4788467.exe	NEW ORDER- 4788467.exe
PID 1064 wrote to memory of 2644	1064	NEW ORDER- 4788467.exe	NEW ORDER- 4788467.exe
PID 1064 wrote to memory of 2644	1064	NEW ORDER- 4788467.exe	NEW ORDER- 4788467.exe
PID 1064 wrote to memory of 2644	1064	NEW ORDER- 4788467.exe	NEW ORDER- 4788467.exe
PID 1064 wrote to memory of 2644	1064	NEW ORDER- 4788467.exe	NEW ORDER- 4788467.exe
PID 1064 wrote to memory of 2644	1064	NEW ORDER- 4788467.exe	NEW ORDER- 4788467.exe
PID 1064 wrote to memory of 2644	1064	NEW ORDER- 4788467.exe	NEW ORDER- 4788467.exe
PID 1064 wrote to memory of 2644	1064	NEW ORDER- 4788467.exe	NEW ORDER- 4788467.exe
PID 1064 wrote to memory of 2644	1064	NEW ORDER- 4788467.exe	NEW ORDER- 4788467.exe
PID 1064 wrote to memory of 2644	1064	NEW ORDER- 4788467.exe	NEW ORDER- 4788467.exe
PID 1064 wrote to memory of 2644	1064	NEW ORDER- 4788467.exe	NEW ORDER- 4788467.exe
PID 1064 wrote to memory of 2644	1064	NEW ORDER- 4788467.exe	NEW ORDER- 4788467.exe
PID 2644 wrote to memory of 2168	2644	NEW ORDER- 4788467.exe	remcos.exe
PID 2644 wrote to memory of 2168	2644	NEW ORDER- 4788467.exe	remcos.exe
PID 2644 wrote to memory of 2168	2644	NEW ORDER- 4788467.exe	remcos.exe
PID 2644 wrote to memory of 2168	2644	NEW ORDER- 4788467.exe	remcos.exe
PID 2168 wrote to memory of 1784	2168	remcos.exe	powershell.exe
PID 2168 wrote to memory of 1784	2168	remcos.exe	powershell.exe
PID 2168 wrote to memory of 1784	2168	remcos.exe	powershell.exe
PID 2168 wrote to memory of 1784	2168	remcos.exe	powershell.exe
PID 2168 wrote to memory of 2240	2168	remcos.exe	schtasks.exe
PID 2168 wrote to memory of 2240	2168	remcos.exe	schtasks.exe
PID 2168 wrote to memory of 2240	2168	remcos.exe	schtasks.exe
PID 2168 wrote to memory of 2240	2168	remcos.exe	schtasks.exe
PID 2168 wrote to memory of 592	2168	remcos.exe	remcos.exe
PID 2168 wrote to memory of 592	2168	remcos.exe	remcos.exe
PID 2168 wrote to memory of 592	2168	remcos.exe	remcos.exe
PID 2168 wrote to memory of 592	2168	remcos.exe	remcos.exe
PID 2168 wrote to memory of 592	2168	remcos.exe	remcos.exe
PID 2168 wrote to memory of 592	2168	remcos.exe	remcos.exe
PID 2168 wrote to memory of 592	2168	remcos.exe	remcos.exe
PID 2168 wrote to memory of 592	2168	remcos.exe	remcos.exe
PID 2168 wrote to memory of 592	2168	remcos.exe	remcos.exe
PID 2168 wrote to memory of 592	2168	remcos.exe	remcos.exe
PID 2168 wrote to memory of 592	2168	remcos.exe	remcos.exe
PID 2168 wrote to memory of 592	2168	remcos.exe	remcos.exe
PID 2168 wrote to memory of 592	2168	remcos.exe	remcos.exe

C:\Users\Admin\AppData\Local\Temp\NEW ORDER- 4788467.exe
"C:\Users\Admin\AppData\Local\Temp\NEW ORDER- 4788467.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1064
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\mWrixkEbVc.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2896
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\mWrixkEbVc" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA8EC.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2620
- C:\Users\Admin\AppData\Local\Temp\NEW ORDER- 4788467.exe
  "C:\Users\Admin\AppData\Local\Temp\NEW ORDER- 4788467.exe"
  2⤵
  - Loads dropped DLL
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2644
- - C:\ProgramData\Remcos\remcos.exe
    "C:\ProgramData\Remcos\remcos.exe"
    3⤵
    - 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:2168
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\mWrixkEbVc.exe"
      4⤵
      Command and Scripting Interpreter: PowerShell
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1784
  - - C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\mWrixkEbVc" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1CF3.tmp"
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:2240
  - - C:\ProgramData\Remcos\remcos.exe
      "C:\ProgramData\Remcos\remcos.exe"
      4⤵
      Executes dropped EXE
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      Suspicious use of SetWindowsHookEx
      PID:592

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\Remcos\logs.dat

Filesize
144B

MD5
7fb55b236aaadfd624378b070b9047be

SHA1
b883469fe3d0633db14def11190884ea3fa90f78

SHA256
df4933313488cb4068861f9bdf6d1e4927e4fb61fcb23b0987f827bea29c109c

SHA512
ea531e2ebf9b16c042fb725f230be8404147e9fb0a62438f36e017b613a2a5796cf72f1dcd5636426290a767aef92c9cfb55b2576a60d3fdf2ec62ecc522a1b8

Download Submit
C:\ProgramData\Remcos\remcos.exe

Filesize
908KB

MD5
1cb86400147c835af58017f0474c5bcc

SHA1
ac285cb623bf292341068dead954cfed9a1f8c81

SHA256
c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61

SHA512
ce74f39d092b13570f9387e5d43ced748dea9557e8887fc072694a2cf448b2c4cf741db3e76d551ebef3511b906ae1cbe0fe670f8968e51d1441982ec73b9b0c

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpA8EC.tmp

Filesize
1KB

MD5
8a0837613afa072ed184fec1ecb08087

SHA1
e1667293e1d138e92f613565750ec52f567105be

SHA256
63211c6ea0519d463a4f77168544b1b7855c1d6380c3dc0e5b7e319e1834bb05

SHA512
a25c9cac1cfeb4c1f58e58a74087366a51a57608b2a44305dd2de98207b75983cf3411f5651a6785e491073010c3a083d0f59ec1f14ddb66f12c2b94e81eb0c9

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

Filesize
7KB

MD5
363fd19c38b887e041c8a63c9c6aed02

SHA1
b1601fc06583d367d845a0cb8dc05dc9196f5871

SHA256
048035d40ad78588f50f98918854e4b4ad778f4035f181e46883218492e30273

SHA512
a72a19f8789eb0729b18dbcc167f9e8710bfd24f8c1fa0ffa9f642376d40087294caf60d0cc5ec634df70770a1e9f9e89ee08ad613487d0ce50b691d47f8725a

Download Submit
memory/592-87-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/592-70-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/592-64-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/592-69-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/592-61-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/592-102-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/592-100-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/592-95-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/592-65-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/592-81-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1064-3-0x0000000073D1E000-0x0000000073D1F000-memory.dmp

Filesize
4KB

Download
memory/1064-0-0x0000000073D1E000-0x0000000073D1F000-memory.dmp

Filesize
4KB

Download
memory/1064-4-0x0000000000320000-0x0000000000332000-memory.dmp

Filesize
72KB

Download
memory/1064-5-0x0000000073D10000-0x00000000743FE000-memory.dmp

Filesize
6.9MB

Download
memory/1064-2-0x0000000073D10000-0x00000000743FE000-memory.dmp

Filesize
6.9MB

Download
memory/1064-34-0x0000000073D10000-0x00000000743FE000-memory.dmp

Filesize
6.9MB

Download
memory/1064-1-0x0000000000990000-0x0000000000A7A000-memory.dmp

Filesize
936KB

Download
memory/1064-6-0x0000000002180000-0x0000000002244000-memory.dmp

Filesize
784KB

Download
memory/2168-41-0x0000000000BE0000-0x0000000000CCA000-memory.dmp

Filesize
936KB

Download
memory/2168-42-0x0000000004FC0000-0x0000000005084000-memory.dmp

Filesize
784KB

Download
memory/2644-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2644-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2644-16-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2644-18-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2644-20-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2644-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2644-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2644-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2644-30-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2644-32-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2644-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads