remcos | 329eb8f2ecbea9a9cc0e9c84f5ba029a7c3f4f54d1bbbf8e09431318d4325610

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
29-12-2024 08:09

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General

Target

418cc2f738fc7f9ebdf659f04ad39c5cf02bb1ee9221955accbe5357a7a6ca63.exe
Size

1.3MB
MD5

349d827857cd2dc23fb06077d246f9ea
SHA1

78ee20b8ec3ba85a2181f25ea896b6fa99c4302f
SHA256

418cc2f738fc7f9ebdf659f04ad39c5cf02bb1ee9221955accbe5357a7a6ca63
SHA512

ab9a1f0fbd030acd105cc3045b4bae667a8b26aa66c30504f9201ad9361697d1e2a133b7f6d2d78f09fcdc0e2783459efdaa41636a94d1f6b42bab546aeeabee
SSDEEP

24576:DcKOYIFAIu83P3+qKaIbEnR6OJIQoJfZp63sQubuMrZzeG2:dO97ROqKaZdIQolL63jcTze/

Score

10^/10

remcos remotehost discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

79.134.225.7:2050

Attributes

audio_folder
MicRecords
audio_path
%AppData%
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
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
Remcos-TTGDBF
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
take_screenshot_title
notepad;solitaire;

Signatures

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

Checks computer location settings 2 TTPs 4 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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	418cc2f738fc7f9ebdf659f04ad39c5cf02bb1ee9221955accbe5357a7a6ca63.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	418cc2f738fc7f9ebdf659f04ad39c5cf02bb1ee9221955accbe5357a7a6ca63.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	remcos.exe

Executes dropped EXE 2 IoCs

pid	Process
4468	remcos.exe
4592	remcos.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\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\huss = "\"C:\\Users\\Admin\\AppData\\Local\\huss.exe\""	418cc2f738fc7f9ebdf659f04ad39c5cf02bb1ee9221955accbe5357a7a6ca63.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\Remcos\\remcos.exe\""	418cc2f738fc7f9ebdf659f04ad39c5cf02bb1ee9221955accbe5357a7a6ca63.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\huss = "\"C:\\Users\\Admin\\AppData\\Local\\huss.exe\""	remcos.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\Remcos\\remcos.exe\""	remcos.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3508 set thread context of 3808	3508	418cc2f738fc7f9ebdf659f04ad39c5cf02bb1ee9221955accbe5357a7a6ca63.exe	92
PID 4468 set thread context of 4592	4468	remcos.exe	102

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 9 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	418cc2f738fc7f9ebdf659f04ad39c5cf02bb1ee9221955accbe5357a7a6ca63.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	418cc2f738fc7f9ebdf659f04ad39c5cf02bb1ee9221955accbe5357a7a6ca63.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.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	timeout.exe

Delays execution with timeout.exe 2 IoCs

evasion

pid	Process
4264	timeout.exe
2976	timeout.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000_Classes\Local Settings	418cc2f738fc7f9ebdf659f04ad39c5cf02bb1ee9221955accbe5357a7a6ca63.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3508	418cc2f738fc7f9ebdf659f04ad39c5cf02bb1ee9221955accbe5357a7a6ca63.exe
3508	418cc2f738fc7f9ebdf659f04ad39c5cf02bb1ee9221955accbe5357a7a6ca63.exe
4468	remcos.exe
4468	remcos.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3508	418cc2f738fc7f9ebdf659f04ad39c5cf02bb1ee9221955accbe5357a7a6ca63.exe
Token: SeDebugPrivilege	4468	remcos.exe

Suspicious use of WriteProcessMemory 45 IoCs

description	pid	Process	procid_target
PID 3508 wrote to memory of 3840	3508	418cc2f738fc7f9ebdf659f04ad39c5cf02bb1ee9221955accbe5357a7a6ca63.exe	82
PID 3508 wrote to memory of 3840	3508	418cc2f738fc7f9ebdf659f04ad39c5cf02bb1ee9221955accbe5357a7a6ca63.exe	82
PID 3508 wrote to memory of 3840	3508	418cc2f738fc7f9ebdf659f04ad39c5cf02bb1ee9221955accbe5357a7a6ca63.exe	82
PID 3840 wrote to memory of 4264	3840	cmd.exe	84
PID 3840 wrote to memory of 4264	3840	cmd.exe	84
PID 3840 wrote to memory of 4264	3840	cmd.exe	84
PID 3508 wrote to memory of 3808	3508	418cc2f738fc7f9ebdf659f04ad39c5cf02bb1ee9221955accbe5357a7a6ca63.exe	92
PID 3508 wrote to memory of 3808	3508	418cc2f738fc7f9ebdf659f04ad39c5cf02bb1ee9221955accbe5357a7a6ca63.exe	92
PID 3508 wrote to memory of 3808	3508	418cc2f738fc7f9ebdf659f04ad39c5cf02bb1ee9221955accbe5357a7a6ca63.exe	92
PID 3508 wrote to memory of 3808	3508	418cc2f738fc7f9ebdf659f04ad39c5cf02bb1ee9221955accbe5357a7a6ca63.exe	92
PID 3508 wrote to memory of 3808	3508	418cc2f738fc7f9ebdf659f04ad39c5cf02bb1ee9221955accbe5357a7a6ca63.exe	92
PID 3508 wrote to memory of 3808	3508	418cc2f738fc7f9ebdf659f04ad39c5cf02bb1ee9221955accbe5357a7a6ca63.exe	92
PID 3508 wrote to memory of 3808	3508	418cc2f738fc7f9ebdf659f04ad39c5cf02bb1ee9221955accbe5357a7a6ca63.exe	92
PID 3508 wrote to memory of 3808	3508	418cc2f738fc7f9ebdf659f04ad39c5cf02bb1ee9221955accbe5357a7a6ca63.exe	92
PID 3508 wrote to memory of 3808	3508	418cc2f738fc7f9ebdf659f04ad39c5cf02bb1ee9221955accbe5357a7a6ca63.exe	92
PID 3508 wrote to memory of 3808	3508	418cc2f738fc7f9ebdf659f04ad39c5cf02bb1ee9221955accbe5357a7a6ca63.exe	92
PID 3508 wrote to memory of 3808	3508	418cc2f738fc7f9ebdf659f04ad39c5cf02bb1ee9221955accbe5357a7a6ca63.exe	92
PID 3508 wrote to memory of 3808	3508	418cc2f738fc7f9ebdf659f04ad39c5cf02bb1ee9221955accbe5357a7a6ca63.exe	92
PID 3808 wrote to memory of 3188	3808	418cc2f738fc7f9ebdf659f04ad39c5cf02bb1ee9221955accbe5357a7a6ca63.exe	93
PID 3808 wrote to memory of 3188	3808	418cc2f738fc7f9ebdf659f04ad39c5cf02bb1ee9221955accbe5357a7a6ca63.exe	93
PID 3808 wrote to memory of 3188	3808	418cc2f738fc7f9ebdf659f04ad39c5cf02bb1ee9221955accbe5357a7a6ca63.exe	93
PID 3188 wrote to memory of 4796	3188	WScript.exe	94
PID 3188 wrote to memory of 4796	3188	WScript.exe	94
PID 3188 wrote to memory of 4796	3188	WScript.exe	94
PID 4796 wrote to memory of 4468	4796	cmd.exe	96
PID 4796 wrote to memory of 4468	4796	cmd.exe	96
PID 4796 wrote to memory of 4468	4796	cmd.exe	96
PID 4468 wrote to memory of 4320	4468	remcos.exe	98
PID 4468 wrote to memory of 4320	4468	remcos.exe	98
PID 4468 wrote to memory of 4320	4468	remcos.exe	98
PID 4320 wrote to memory of 2976	4320	cmd.exe	100
PID 4320 wrote to memory of 2976	4320	cmd.exe	100
PID 4320 wrote to memory of 2976	4320	cmd.exe	100
PID 4468 wrote to memory of 4592	4468	remcos.exe	102
PID 4468 wrote to memory of 4592	4468	remcos.exe	102
PID 4468 wrote to memory of 4592	4468	remcos.exe	102
PID 4468 wrote to memory of 4592	4468	remcos.exe	102
PID 4468 wrote to memory of 4592	4468	remcos.exe	102
PID 4468 wrote to memory of 4592	4468	remcos.exe	102
PID 4468 wrote to memory of 4592	4468	remcos.exe	102
PID 4468 wrote to memory of 4592	4468	remcos.exe	102
PID 4468 wrote to memory of 4592	4468	remcos.exe	102
PID 4468 wrote to memory of 4592	4468	remcos.exe	102
PID 4468 wrote to memory of 4592	4468	remcos.exe	102
PID 4468 wrote to memory of 4592	4468	remcos.exe	102

C:\Users\Admin\AppData\Local\Temp\418cc2f738fc7f9ebdf659f04ad39c5cf02bb1ee9221955accbe5357a7a6ca63.exe
"C:\Users\Admin\AppData\Local\Temp\418cc2f738fc7f9ebdf659f04ad39c5cf02bb1ee9221955accbe5357a7a6ca63.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3508
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout 20
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3840
- - C:\Windows\SysWOW64\timeout.exe
    timeout 20
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4264
- C:\Users\Admin\AppData\Local\Temp\418cc2f738fc7f9ebdf659f04ad39c5cf02bb1ee9221955accbe5357a7a6ca63.exe
  C:\Users\Admin\AppData\Local\Temp\418cc2f738fc7f9ebdf659f04ad39c5cf02bb1ee9221955accbe5357a7a6ca63.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:3808
- - C:\Windows\SysWOW64\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
    3⤵
    - Checks computer location settings
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3188
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:4796
    - - C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
        
        C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
        5⤵
        Checks computer location settings
        Executes dropped EXE
        Adds Run key to start application
        Suspicious use of SetThreadContext
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:4468
      - C:\Windows\SysWOW64\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /c timeout 20
        6⤵
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:4320
        
        C:\Windows\SysWOW64\timeout.exe
        
        timeout 20
        7⤵
        System Location Discovery: System Language Discovery
        Delays execution with timeout.exe
        
        PID:2976
      - C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
        
        C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
        6⤵
        Executes dropped EXE
        Adds Run key to start application
        
        PID:4592

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

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
418B

MD5
b92d64fe5b1d1f59df4b738262aea8df

SHA1
c8fb1981759c2d9bb2ec91b705985fba5fc7af63

SHA256
fa20e9aab03dc8e9f1910aaf0cf42662379fa16ae3a22642084fb97fa3d4f83a

SHA512
2566248b93c0cfb0414f033b8dd18bbd4f88180093eac2861107289bcb4ee160f9593706ff1f7d1f2e4ecea430d67a5a2897551a4f9ebd82b707243e300520e2

Download Submit
C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe

Filesize
1.3MB

MD5
349d827857cd2dc23fb06077d246f9ea

SHA1
78ee20b8ec3ba85a2181f25ea896b6fa99c4302f

SHA256
418cc2f738fc7f9ebdf659f04ad39c5cf02bb1ee9221955accbe5357a7a6ca63

SHA512
ab9a1f0fbd030acd105cc3045b4bae667a8b26aa66c30504f9201ad9361697d1e2a133b7f6d2d78f09fcdc0e2783459efdaa41636a94d1f6b42bab546aeeabee

Download Submit
memory/3508-38-0x0000000005020000-0x0000000005157000-memory.dmp

Filesize
1.2MB

Download
memory/3508-2000-0x0000000075340000-0x0000000075AF0000-memory.dmp

Filesize
7.7MB

Download
memory/3508-4-0x00000000051B0000-0x0000000005200000-memory.dmp

Filesize
320KB

Download
memory/3508-5-0x00000000057B0000-0x0000000005D54000-memory.dmp

Filesize
5.6MB

Download
memory/3508-6-0x00000000052A0000-0x0000000005332000-memory.dmp

Filesize
584KB

Download
memory/3508-24-0x0000000005020000-0x0000000005157000-memory.dmp

Filesize
1.2MB

Download
memory/3508-30-0x0000000005020000-0x0000000005157000-memory.dmp

Filesize
1.2MB

Download
memory/3508-58-0x0000000005020000-0x0000000005157000-memory.dmp

Filesize
1.2MB

Download
memory/3508-70-0x0000000005020000-0x0000000005157000-memory.dmp

Filesize
1.2MB

Download
memory/3508-68-0x0000000005020000-0x0000000005157000-memory.dmp

Filesize
1.2MB

Download
memory/3508-66-0x0000000005020000-0x0000000005157000-memory.dmp

Filesize
1.2MB

Download
memory/3508-64-0x0000000005020000-0x0000000005157000-memory.dmp

Filesize
1.2MB

Download
memory/3508-62-0x0000000005020000-0x0000000005157000-memory.dmp

Filesize
1.2MB

Download
memory/3508-60-0x0000000005020000-0x0000000005157000-memory.dmp

Filesize
1.2MB

Download
memory/3508-56-0x0000000005020000-0x0000000005157000-memory.dmp

Filesize
1.2MB

Download
memory/3508-54-0x0000000005020000-0x0000000005157000-memory.dmp

Filesize
1.2MB

Download
memory/3508-52-0x0000000005020000-0x0000000005157000-memory.dmp

Filesize
1.2MB

Download
memory/3508-48-0x0000000005020000-0x0000000005157000-memory.dmp

Filesize
1.2MB

Download
memory/3508-46-0x0000000005020000-0x0000000005157000-memory.dmp

Filesize
1.2MB

Download
memory/3508-44-0x0000000005020000-0x0000000005157000-memory.dmp

Filesize
1.2MB

Download
memory/3508-42-0x0000000005020000-0x0000000005157000-memory.dmp

Filesize
1.2MB

Download
memory/3508-40-0x0000000005020000-0x0000000005157000-memory.dmp

Filesize
1.2MB

Download
memory/3508-2-0x0000000075340000-0x0000000075AF0000-memory.dmp

Filesize
7.7MB

Download
memory/3508-3-0x0000000005020000-0x000000000515C000-memory.dmp

Filesize
1.2MB

Download
memory/3508-22-0x0000000005020000-0x0000000005157000-memory.dmp

Filesize
1.2MB

Download
memory/3508-28-0x0000000005020000-0x0000000005157000-memory.dmp

Filesize
1.2MB

Download
memory/3508-26-0x0000000005020000-0x0000000005157000-memory.dmp

Filesize
1.2MB

Download
memory/3508-32-0x0000000005020000-0x0000000005157000-memory.dmp

Filesize
1.2MB

Download
memory/3508-20-0x0000000005020000-0x0000000005157000-memory.dmp

Filesize
1.2MB

Download
memory/3508-18-0x0000000005020000-0x0000000005157000-memory.dmp

Filesize
1.2MB

Download
memory/3508-16-0x0000000005020000-0x0000000005157000-memory.dmp

Filesize
1.2MB

Download
memory/3508-14-0x0000000005020000-0x0000000005157000-memory.dmp

Filesize
1.2MB

Download
memory/3508-12-0x0000000005020000-0x0000000005157000-memory.dmp

Filesize
1.2MB

Download
memory/3508-11-0x0000000005020000-0x0000000005157000-memory.dmp

Filesize
1.2MB

Download
memory/3508-8-0x0000000005020000-0x0000000005157000-memory.dmp

Filesize
1.2MB

Download
memory/3508-50-0x0000000005020000-0x0000000005157000-memory.dmp

Filesize
1.2MB

Download
memory/3508-36-0x0000000005020000-0x0000000005157000-memory.dmp

Filesize
1.2MB

Download
memory/3508-7-0x0000000005020000-0x0000000005157000-memory.dmp

Filesize
1.2MB

Download
memory/3508-1997-0x00000000053A0000-0x000000000540C000-memory.dmp

Filesize
432KB

Download
memory/3508-1998-0x0000000005410000-0x000000000545C000-memory.dmp

Filesize
304KB

Download
memory/3508-1999-0x000000007534E000-0x000000007534F000-memory.dmp

Filesize
4KB

Download
memory/3508-34-0x0000000005020000-0x0000000005157000-memory.dmp

Filesize
1.2MB

Download
memory/3508-1-0x00000000004F0000-0x0000000000638000-memory.dmp

Filesize
1.3MB

Download
memory/3508-2009-0x0000000075340000-0x0000000075AF0000-memory.dmp

Filesize
7.7MB

Download
memory/3508-0-0x000000007534E000-0x000000007534F000-memory.dmp

Filesize
4KB

Download
memory/3808-2012-0x0000000000400000-0x000000000047A000-memory.dmp

Filesize
488KB

Download
memory/3808-2008-0x0000000000400000-0x000000000047A000-memory.dmp

Filesize
488KB

Download