remcos | 931e3628826b5becb12781a8d1734715512b282ea3d33978c28db1676cbac726

Analysis

max time kernel
119s
max time network
122s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
11-01-2025 05:19

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General

Target

931e3628826b5becb12781a8d1734715512b282ea3d33978c28db1676cbac726N.exe
Size

1.2MB
MD5

96d2106a3a6f64335ef5777aad854e50
SHA1

589ed8bfb973cd55162d021923ac35d2a0013758
SHA256

931e3628826b5becb12781a8d1734715512b282ea3d33978c28db1676cbac726
SHA512

3cd9920e070a2414ef25cbab7d00a3f3243d9f2a9504c59d140da4ca10e35f283276013c12ef75900152739ff52237b6881e6d81e07685e0a1ca8d3dc397387c
SSDEEP

12288:jtkSYXY7QFVwd6e7MBiJvISMwFiHsJ0fofBz7J5BP/+POgWldmjDjTrTv3iTG7QJ: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
3600	windowss.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-1-5-21-3756129449-3121373848-4276368241-1000\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 3600 set thread context of 3064	3600	windowss.exe	103

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	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	windowss.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	931e3628826b5becb12781a8d1734715512b282ea3d33978c28db1676cbac726N.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

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
2860	PING.EXE
4700	cmd.exe
3676	PING.EXE
2112	cmd.exe
4948	PING.EXE

Runs ping.exe 1 TTPs 3 IoCs

Remote System Discovery

T1018

pid	Process
3676	PING.EXE
4948	PING.EXE
2860	PING.EXE

Suspicious behavior: EnumeratesProcesses 35 IoCs

pid	Process
116	931e3628826b5becb12781a8d1734715512b282ea3d33978c28db1676cbac726N.exe
116	931e3628826b5becb12781a8d1734715512b282ea3d33978c28db1676cbac726N.exe
116	931e3628826b5becb12781a8d1734715512b282ea3d33978c28db1676cbac726N.exe
116	931e3628826b5becb12781a8d1734715512b282ea3d33978c28db1676cbac726N.exe
116	931e3628826b5becb12781a8d1734715512b282ea3d33978c28db1676cbac726N.exe
116	931e3628826b5becb12781a8d1734715512b282ea3d33978c28db1676cbac726N.exe
116	931e3628826b5becb12781a8d1734715512b282ea3d33978c28db1676cbac726N.exe
116	931e3628826b5becb12781a8d1734715512b282ea3d33978c28db1676cbac726N.exe
116	931e3628826b5becb12781a8d1734715512b282ea3d33978c28db1676cbac726N.exe
116	931e3628826b5becb12781a8d1734715512b282ea3d33978c28db1676cbac726N.exe
116	931e3628826b5becb12781a8d1734715512b282ea3d33978c28db1676cbac726N.exe
116	931e3628826b5becb12781a8d1734715512b282ea3d33978c28db1676cbac726N.exe
116	931e3628826b5becb12781a8d1734715512b282ea3d33978c28db1676cbac726N.exe
116	931e3628826b5becb12781a8d1734715512b282ea3d33978c28db1676cbac726N.exe
116	931e3628826b5becb12781a8d1734715512b282ea3d33978c28db1676cbac726N.exe
116	931e3628826b5becb12781a8d1734715512b282ea3d33978c28db1676cbac726N.exe
116	931e3628826b5becb12781a8d1734715512b282ea3d33978c28db1676cbac726N.exe
116	931e3628826b5becb12781a8d1734715512b282ea3d33978c28db1676cbac726N.exe
116	931e3628826b5becb12781a8d1734715512b282ea3d33978c28db1676cbac726N.exe
116	931e3628826b5becb12781a8d1734715512b282ea3d33978c28db1676cbac726N.exe
116	931e3628826b5becb12781a8d1734715512b282ea3d33978c28db1676cbac726N.exe
116	931e3628826b5becb12781a8d1734715512b282ea3d33978c28db1676cbac726N.exe
116	931e3628826b5becb12781a8d1734715512b282ea3d33978c28db1676cbac726N.exe
116	931e3628826b5becb12781a8d1734715512b282ea3d33978c28db1676cbac726N.exe
116	931e3628826b5becb12781a8d1734715512b282ea3d33978c28db1676cbac726N.exe
116	931e3628826b5becb12781a8d1734715512b282ea3d33978c28db1676cbac726N.exe
3600	windowss.exe
3600	windowss.exe
3600	windowss.exe
3600	windowss.exe
3600	windowss.exe
3600	windowss.exe
3600	windowss.exe
3600	windowss.exe
3600	windowss.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	116	931e3628826b5becb12781a8d1734715512b282ea3d33978c28db1676cbac726N.exe
Token: SeDebugPrivilege	3600	windowss.exe

Suspicious use of WriteProcessMemory 61 IoCs

description	pid	Process	procid_target
PID 116 wrote to memory of 4700	116	931e3628826b5becb12781a8d1734715512b282ea3d33978c28db1676cbac726N.exe	82
PID 116 wrote to memory of 4700	116	931e3628826b5becb12781a8d1734715512b282ea3d33978c28db1676cbac726N.exe	82
PID 116 wrote to memory of 4700	116	931e3628826b5becb12781a8d1734715512b282ea3d33978c28db1676cbac726N.exe	82
PID 4700 wrote to memory of 3676	4700	cmd.exe	84
PID 4700 wrote to memory of 3676	4700	cmd.exe	84
PID 4700 wrote to memory of 3676	4700	cmd.exe	84
PID 116 wrote to memory of 2112	116	931e3628826b5becb12781a8d1734715512b282ea3d33978c28db1676cbac726N.exe	90
PID 116 wrote to memory of 2112	116	931e3628826b5becb12781a8d1734715512b282ea3d33978c28db1676cbac726N.exe	90
PID 116 wrote to memory of 2112	116	931e3628826b5becb12781a8d1734715512b282ea3d33978c28db1676cbac726N.exe	90
PID 2112 wrote to memory of 4948	2112	cmd.exe	92
PID 2112 wrote to memory of 4948	2112	cmd.exe	92
PID 2112 wrote to memory of 4948	2112	cmd.exe	92
PID 4700 wrote to memory of 3032	4700	cmd.exe	95
PID 4700 wrote to memory of 3032	4700	cmd.exe	95
PID 4700 wrote to memory of 3032	4700	cmd.exe	95
PID 2112 wrote to memory of 2860	2112	cmd.exe	98
PID 2112 wrote to memory of 2860	2112	cmd.exe	98
PID 2112 wrote to memory of 2860	2112	cmd.exe	98
PID 2112 wrote to memory of 3600	2112	cmd.exe	99
PID 2112 wrote to memory of 3600	2112	cmd.exe	99
PID 2112 wrote to memory of 3600	2112	cmd.exe	99
PID 3600 wrote to memory of 4128	3600	windowss.exe	100
PID 3600 wrote to memory of 4128	3600	windowss.exe	100
PID 3600 wrote to memory of 4128	3600	windowss.exe	100
PID 3600 wrote to memory of 4128	3600	windowss.exe	100
PID 3600 wrote to memory of 4128	3600	windowss.exe	100
PID 3600 wrote to memory of 4128	3600	windowss.exe	100
PID 3600 wrote to memory of 4128	3600	windowss.exe	100
PID 3600 wrote to memory of 4128	3600	windowss.exe	100
PID 3600 wrote to memory of 4128	3600	windowss.exe	100
PID 3600 wrote to memory of 4128	3600	windowss.exe	100
PID 3600 wrote to memory of 3428	3600	windowss.exe	101
PID 3600 wrote to memory of 3428	3600	windowss.exe	101
PID 3600 wrote to memory of 3428	3600	windowss.exe	101
PID 3600 wrote to memory of 3428	3600	windowss.exe	101
PID 3600 wrote to memory of 3428	3600	windowss.exe	101
PID 3600 wrote to memory of 3428	3600	windowss.exe	101
PID 3600 wrote to memory of 3428	3600	windowss.exe	101
PID 3600 wrote to memory of 3428	3600	windowss.exe	101
PID 3600 wrote to memory of 3428	3600	windowss.exe	101
PID 3600 wrote to memory of 3428	3600	windowss.exe	101
PID 3600 wrote to memory of 1672	3600	windowss.exe	102
PID 3600 wrote to memory of 1672	3600	windowss.exe	102
PID 3600 wrote to memory of 1672	3600	windowss.exe	102
PID 3600 wrote to memory of 1672	3600	windowss.exe	102
PID 3600 wrote to memory of 1672	3600	windowss.exe	102
PID 3600 wrote to memory of 1672	3600	windowss.exe	102
PID 3600 wrote to memory of 1672	3600	windowss.exe	102
PID 3600 wrote to memory of 1672	3600	windowss.exe	102
PID 3600 wrote to memory of 1672	3600	windowss.exe	102
PID 3600 wrote to memory of 1672	3600	windowss.exe	102
PID 3600 wrote to memory of 3064	3600	windowss.exe	103
PID 3600 wrote to memory of 3064	3600	windowss.exe	103
PID 3600 wrote to memory of 3064	3600	windowss.exe	103
PID 3600 wrote to memory of 3064	3600	windowss.exe	103
PID 3600 wrote to memory of 3064	3600	windowss.exe	103
PID 3600 wrote to memory of 3064	3600	windowss.exe	103
PID 3600 wrote to memory of 3064	3600	windowss.exe	103
PID 3600 wrote to memory of 3064	3600	windowss.exe	103
PID 3600 wrote to memory of 3064	3600	windowss.exe	103
PID 3600 wrote to memory of 3064	3600	windowss.exe	103

C:\Users\Admin\AppData\Local\Temp\931e3628826b5becb12781a8d1734715512b282ea3d33978c28db1676cbac726N.exe
"C:\Users\Admin\AppData\Local\Temp\931e3628826b5becb12781a8d1734715512b282ea3d33978c28db1676cbac726N.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:116
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c ping 127.0.0.1 -n 15 > 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:4700
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 15
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:3676
- - 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:3032
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c ping 127.0.0.1 -n 27 > nul && copy "C:\Users\Admin\AppData\Local\Temp\931e3628826b5becb12781a8d1734715512b282ea3d33978c28db1676cbac726N.exe" "C:\Users\Admin\AppData\Roaming\windowss.exe" && ping 127.0.0.1 -n 27 > nul && "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:2112
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 27
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:4948
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 27
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2860
- - 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:3600
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
      4⤵
      PID:4128
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
      4⤵
      PID:3428
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
      4⤵
      PID:1672
  - - 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:3064

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

Replay Monitor

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Downloads

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

Filesize
1.2MB

MD5
96d2106a3a6f64335ef5777aad854e50

SHA1
589ed8bfb973cd55162d021923ac35d2a0013758

SHA256
931e3628826b5becb12781a8d1734715512b282ea3d33978c28db1676cbac726

SHA512
3cd9920e070a2414ef25cbab7d00a3f3243d9f2a9504c59d140da4ca10e35f283276013c12ef75900152739ff52237b6881e6d81e07685e0a1ca8d3dc397387c

Download Submit
memory/116-10-0x0000000075330000-0x0000000075AE0000-memory.dmp

Filesize
7.7MB

Download
memory/116-5-0x0000000075330000-0x0000000075AE0000-memory.dmp

Filesize
7.7MB

Download
memory/116-12-0x0000000075330000-0x0000000075AE0000-memory.dmp

Filesize
7.7MB

Download
memory/116-0-0x000000007533E000-0x000000007533F000-memory.dmp

Filesize
4KB

Download
memory/116-1-0x0000000000E20000-0x0000000000F4E000-memory.dmp

Filesize
1.2MB

Download
memory/116-6-0x0000000004CB0000-0x0000000004CD6000-memory.dmp

Filesize
152KB

Download
memory/116-7-0x0000000005000000-0x000000000500A000-memory.dmp

Filesize
40KB

Download
memory/116-8-0x0000000075330000-0x0000000075AE0000-memory.dmp

Filesize
7.7MB

Download
memory/116-9-0x000000007533E000-0x000000007533F000-memory.dmp

Filesize
4KB

Download
memory/116-4-0x0000000004C10000-0x0000000004CAC000-memory.dmp

Filesize
624KB

Download
memory/116-3-0x0000000004B70000-0x0000000004C02000-memory.dmp

Filesize
584KB

Download
memory/116-2-0x0000000005080000-0x0000000005624000-memory.dmp

Filesize
5.6MB

Download
memory/3064-27-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3064-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3064-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3064-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3064-31-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3064-30-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3064-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3064-26-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3064-29-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3600-18-0x00000000000D0000-0x00000000001FE000-memory.dmp

Filesize
1.2MB

Download
memory/3600-28-0x0000000075300000-0x0000000075AB0000-memory.dmp

Filesize
7.7MB

Download
memory/3600-23-0x0000000008E10000-0x0000000008E16000-memory.dmp

Filesize
24KB

Download
memory/3600-22-0x0000000007AF0000-0x0000000007B0A000-memory.dmp

Filesize
104KB

Download
memory/3600-21-0x0000000075300000-0x0000000075AB0000-memory.dmp

Filesize
7.7MB

Download
memory/3600-20-0x0000000075300000-0x0000000075AB0000-memory.dmp

Filesize
7.7MB

Download
memory/3600-19-0x0000000075300000-0x0000000075AB0000-memory.dmp

Filesize
7.7MB

Download