remcos | 4c106784d38482c8dd594e384c786271bdd88785755b47243209e2f32a022fbf

Analysis

max time kernel
120s
max time network
120s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
11/01/2025, 16:44

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General

Target

4c106784d38482c8dd594e384c786271bdd88785755b47243209e2f32a022fbf.exe
Size

1.2MB
MD5

1edfcd4c706c5dcd35d1d8df7219b68d
SHA1

4e932340e684e2e82d099e816e72e4532ceeb031
SHA256

4c106784d38482c8dd594e384c786271bdd88785755b47243209e2f32a022fbf
SHA512

46057b48e65b99e50e57b32af79ed50810a748fd7c19d2f62cc96168036b714ef6d07ebedd0c30c08281afdac4ea99303b59aacc5d706037015e5a68144098c8
SSDEEP

12288:jtkSYXY7QFVwd6e7MBiJvISMwFiHsJ0fofBz7J5BP/+POgWldmjDjTrTv3iTG7QI:h2dkwBjShyfE75BP/+mgWdm/bTAXLKx/

Score

10^/10

remcos work discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

WORK

netflixyoutubebrowser.duckdns.org:34043

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
false
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-CDDRK8
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
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

Executes dropped EXE 1 IoCs

pid	Process
2852	windowss.exe

Loads dropped DLL 2 IoCs

pid	Process
2660	cmd.exe
2660	cmd.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\windowss = "C:\\Users\\Admin\\AppData\\Roaming\\windowss.exe"	reg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2852 set thread context of 2036	2852	windowss.exe	40

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	4c106784d38482c8dd594e384c786271bdd88785755b47243209e2f32a022fbf.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	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AddInProcess32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	windowss.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 5 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2632	cmd.exe
2220	PING.EXE
2660	cmd.exe
2524	PING.EXE
576	PING.EXE

Runs ping.exe 1 TTPs 3 IoCs

Remote System Discovery

T1018

pid	Process
2220	PING.EXE
2524	PING.EXE
576	PING.EXE

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2772	4c106784d38482c8dd594e384c786271bdd88785755b47243209e2f32a022fbf.exe
2772	4c106784d38482c8dd594e384c786271bdd88785755b47243209e2f32a022fbf.exe
2772	4c106784d38482c8dd594e384c786271bdd88785755b47243209e2f32a022fbf.exe
2772	4c106784d38482c8dd594e384c786271bdd88785755b47243209e2f32a022fbf.exe
2772	4c106784d38482c8dd594e384c786271bdd88785755b47243209e2f32a022fbf.exe
2772	4c106784d38482c8dd594e384c786271bdd88785755b47243209e2f32a022fbf.exe
2852	windowss.exe
2852	windowss.exe
2852	windowss.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2772	4c106784d38482c8dd594e384c786271bdd88785755b47243209e2f32a022fbf.exe
Token: SeDebugPrivilege	2852	windowss.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2772 wrote to memory of 2632	2772	4c106784d38482c8dd594e384c786271bdd88785755b47243209e2f32a022fbf.exe	31
PID 2772 wrote to memory of 2632	2772	4c106784d38482c8dd594e384c786271bdd88785755b47243209e2f32a022fbf.exe	31
PID 2772 wrote to memory of 2632	2772	4c106784d38482c8dd594e384c786271bdd88785755b47243209e2f32a022fbf.exe	31
PID 2772 wrote to memory of 2632	2772	4c106784d38482c8dd594e384c786271bdd88785755b47243209e2f32a022fbf.exe	31
PID 2632 wrote to memory of 2220	2632	cmd.exe	33
PID 2632 wrote to memory of 2220	2632	cmd.exe	33
PID 2632 wrote to memory of 2220	2632	cmd.exe	33
PID 2632 wrote to memory of 2220	2632	cmd.exe	33
PID 2772 wrote to memory of 2660	2772	4c106784d38482c8dd594e384c786271bdd88785755b47243209e2f32a022fbf.exe	34
PID 2772 wrote to memory of 2660	2772	4c106784d38482c8dd594e384c786271bdd88785755b47243209e2f32a022fbf.exe	34
PID 2772 wrote to memory of 2660	2772	4c106784d38482c8dd594e384c786271bdd88785755b47243209e2f32a022fbf.exe	34
PID 2772 wrote to memory of 2660	2772	4c106784d38482c8dd594e384c786271bdd88785755b47243209e2f32a022fbf.exe	34
PID 2660 wrote to memory of 2524	2660	cmd.exe	36
PID 2660 wrote to memory of 2524	2660	cmd.exe	36
PID 2660 wrote to memory of 2524	2660	cmd.exe	36
PID 2660 wrote to memory of 2524	2660	cmd.exe	36
PID 2632 wrote to memory of 2980	2632	cmd.exe	37
PID 2632 wrote to memory of 2980	2632	cmd.exe	37
PID 2632 wrote to memory of 2980	2632	cmd.exe	37
PID 2632 wrote to memory of 2980	2632	cmd.exe	37
PID 2660 wrote to memory of 576	2660	cmd.exe	38
PID 2660 wrote to memory of 576	2660	cmd.exe	38
PID 2660 wrote to memory of 576	2660	cmd.exe	38
PID 2660 wrote to memory of 576	2660	cmd.exe	38
PID 2660 wrote to memory of 2852	2660	cmd.exe	39
PID 2660 wrote to memory of 2852	2660	cmd.exe	39
PID 2660 wrote to memory of 2852	2660	cmd.exe	39
PID 2660 wrote to memory of 2852	2660	cmd.exe	39
PID 2852 wrote to memory of 2036	2852	windowss.exe	40
PID 2852 wrote to memory of 2036	2852	windowss.exe	40
PID 2852 wrote to memory of 2036	2852	windowss.exe	40
PID 2852 wrote to memory of 2036	2852	windowss.exe	40
PID 2852 wrote to memory of 2036	2852	windowss.exe	40
PID 2852 wrote to memory of 2036	2852	windowss.exe	40
PID 2852 wrote to memory of 2036	2852	windowss.exe	40
PID 2852 wrote to memory of 2036	2852	windowss.exe	40
PID 2852 wrote to memory of 2036	2852	windowss.exe	40
PID 2852 wrote to memory of 2036	2852	windowss.exe	40
PID 2852 wrote to memory of 2036	2852	windowss.exe	40

C:\Users\Admin\AppData\Local\Temp\4c106784d38482c8dd594e384c786271bdd88785755b47243209e2f32a022fbf.exe
"C:\Users\Admin\AppData\Local\Temp\4c106784d38482c8dd594e384c786271bdd88785755b47243209e2f32a022fbf.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2772
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c ping 127.0.0.1 -n 18 > nul && REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "windowss" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\windowss.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2632
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 18
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2220
- - C:\Windows\SysWOW64\reg.exe
    REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "windowss" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\windowss.exe"
    3⤵
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    PID:2980
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c ping 127.0.0.1 -n 18 > nul && copy "C:\Users\Admin\AppData\Local\Temp\4c106784d38482c8dd594e384c786271bdd88785755b47243209e2f32a022fbf.exe" "C:\Users\Admin\AppData\Roaming\windowss.exe" && ping 127.0.0.1 -n 18 > nul && "C:\Users\Admin\AppData\Roaming\windowss.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2660
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 18
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2524
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 18
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:576
- - C:\Users\Admin\AppData\Roaming\windowss.exe
    "C:\Users\Admin\AppData\Roaming\windowss.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:2852
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
      4⤵
      System Location Discovery: System Language Discovery
      PID:2036

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

Remote System Discovery

T1018

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Roaming\windowss.exe

Filesize
1.2MB

MD5
1edfcd4c706c5dcd35d1d8df7219b68d

SHA1
4e932340e684e2e82d099e816e72e4532ceeb031

SHA256
4c106784d38482c8dd594e384c786271bdd88785755b47243209e2f32a022fbf

SHA512
46057b48e65b99e50e57b32af79ed50810a748fd7c19d2f62cc96168036b714ef6d07ebedd0c30c08281afdac4ea99303b59aacc5d706037015e5a68144098c8

Download Submit
memory/2036-49-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-56-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-30-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-77-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-76-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-75-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-52-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-73-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-72-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-32-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2036-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-26-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-35-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-39-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-40-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-46-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-47-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-22-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-20-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-50-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-74-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-53-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-54-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-55-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-51-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-57-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-58-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-59-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-60-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-61-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-62-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-63-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-64-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-65-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-66-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-67-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-68-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-69-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-70-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2036-71-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2772-5-0x0000000073F40000-0x000000007462E000-memory.dmp

Filesize
6.9MB

Download
memory/2772-4-0x0000000073F4E000-0x0000000073F4F000-memory.dmp

Filesize
4KB

Download
memory/2772-3-0x0000000000CC0000-0x0000000000CE6000-memory.dmp

Filesize
152KB

Download
memory/2772-2-0x0000000073F40000-0x000000007462E000-memory.dmp

Filesize
6.9MB

Download
memory/2772-1-0x0000000000EE0000-0x000000000100E000-memory.dmp

Filesize
1.2MB

Download
memory/2772-0-0x0000000073F4E000-0x0000000073F4F000-memory.dmp

Filesize
4KB

Download
memory/2772-6-0x0000000073F40000-0x000000007462E000-memory.dmp

Filesize
6.9MB

Download
memory/2852-17-0x0000000000870000-0x000000000099E000-memory.dmp

Filesize
1.2MB

Download
memory/2852-18-0x0000000000410000-0x000000000042A000-memory.dmp

Filesize
104KB

Download
memory/2852-19-0x0000000000430000-0x0000000000436000-memory.dmp

Filesize
24KB

Download