remcos | c299ff2c8cf986daac8d152a99f08a131041001e98327bf8e1896167b74c0fe7

Analysis

max time kernel
60s
max time network
63s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
30/07/2026, 20:17

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General

Target
c299ff2c8cf986daac8d152a99f08a131041001e98327bf8e1896167b74c0fe7.exe
Size 1.5MB
Sample260730-y2n5hsfp7v
SHA256 c299ff2c8cf986daac8d152a99f08a131041001e98327bf8e1896167b74c0fe7
MD5 3e7ba304a916c1e780d4323c071ef473
SHA1 ed38ac627b3139b507cfe9e422b8c50640d56f68
SHA512 3eec68db785d403dbe6eb7e221945895b05ff3eb5f8eab5583cd62c8b4ddb8c5749de90d55209ca80c1ec809aabe820a4fac7ce13eaad589619a8a77f8cc4be8
SSDEEP 24576:zaTg0wZ14X27uUL3VM0kd+rkhfMsjgkAj2JE06J5N0FU:+Tg3ZOcuUL3xAx/8b2S7Z0C
TLSH
T1DD7523FA8E706892D5BD563205AF0F6D35F54FB37A14AC4311713D2A3F3A267A920A1C
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

chinemerem discovery execution remcos persistence rat

Malware Config

Extracted

Family

remcos

Version

2.2.2 Pro

Botnet

chinemerem

remcoss.onmypc.org:3765

Attributes

audio_folder
audio
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
5
copy_file
remcos.exe
copy_folder
remcos
delete_file
false
hide_file
false
hide_keylog_file
true
install_flag
false
install_path
%AppData%
keylog_crypt
true
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
r-8ET8H0
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

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

Executes dropped EXE 4 IoCs

pid	Process
5656	AboutSettingsHandlers.exe
4812	AboutSettingsHandlers.exe
1120	AboutSettingsHandlers.exe
5044	AboutSettingsHandlers.exe

AutoIT Executable 6 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/936-15-0x0000000000DE0000-0x0000000000F69000-memory.dmp	autoit_exe
behavioral2/memory/936-18-0x0000000000DE0000-0x0000000000F69000-memory.dmp	autoit_exe
behavioral2/memory/936-20-0x0000000000DE0000-0x0000000000F69000-memory.dmp	autoit_exe
behavioral2/memory/5656-33-0x0000000000DE0000-0x0000000000F69000-memory.dmp	autoit_exe
behavioral2/memory/5656-35-0x0000000000DE0000-0x0000000000F69000-memory.dmp	autoit_exe
behavioral2/memory/5656-37-0x0000000000DE0000-0x0000000000F69000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 936 set thread context of 4664	936	c299ff2c8cf986daac8d152a99f08a131041001e98327bf8e1896167b74c0fe7.exe	90
PID 5656 set thread context of 4812	5656	AboutSettingsHandlers.exe	95
PID 1120 set thread context of 5044	1120	AboutSettingsHandlers.exe	100

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 6 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	AboutSettingsHandlers.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c299ff2c8cf986daac8d152a99f08a131041001e98327bf8e1896167b74c0fe7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c299ff2c8cf986daac8d152a99f08a131041001e98327bf8e1896167b74c0fe7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AboutSettingsHandlers.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

pid	Process
2272	schtasks.exe
2880	schtasks.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4664	c299ff2c8cf986daac8d152a99f08a131041001e98327bf8e1896167b74c0fe7.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 936 wrote to memory of 4664	936	c299ff2c8cf986daac8d152a99f08a131041001e98327bf8e1896167b74c0fe7.exe	90
PID 936 wrote to memory of 4664	936	c299ff2c8cf986daac8d152a99f08a131041001e98327bf8e1896167b74c0fe7.exe	90
PID 936 wrote to memory of 2272	936	c299ff2c8cf986daac8d152a99f08a131041001e98327bf8e1896167b74c0fe7.exe	91
PID 5656 wrote to memory of 4812	5656	AboutSettingsHandlers.exe	95
PID 5656 wrote to memory of 4812	5656	AboutSettingsHandlers.exe	95
PID 5656 wrote to memory of 2880	5656	AboutSettingsHandlers.exe	97
PID 1120 wrote to memory of 5044	1120	AboutSettingsHandlers.exe	100
PID 1120 wrote to memory of 5044	1120	AboutSettingsHandlers.exe	100

C:\Users\Admin\AppData\Local\Temp\c299ff2c8cf986daac8d152a99f08a131041001e98327bf8e1896167b74c0fe7.exe
"C:\Users\Admin\AppData\Local\Temp\c299ff2c8cf986daac8d152a99f08a131041001e98327bf8e1896167b74c0fe7.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:936
- C:\Users\Admin\AppData\Local\Temp\c299ff2c8cf986daac8d152a99f08a131041001e98327bf8e1896167b74c0fe7.exe
  "C:\Users\Admin\AppData\Local\Temp\c299ff2c8cf986daac8d152a99f08a131041001e98327bf8e1896167b74c0fe7.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:4664
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\SysWOW64\schtasks.exe" /create /tn SystemSettingsAdminFlows /tr "C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe" /sc minute /mo 1 /F
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2272

C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5656
- C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
  "C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe"
  2⤵
  - Executes dropped EXE
  PID:4812
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\SysWOW64\schtasks.exe" /create /tn SystemSettingsAdminFlows /tr "C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe" /sc minute /mo 1 /F
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2880

C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
"C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1120
- C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
  "C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe"
  2⤵
  - Executes dropped EXE
  PID:5044

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

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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AboutSettingsHandlers.exe

Path C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
Size 1.5MB
SHA256 811196592d5a7413cfa6c1b9e45e973fcc5d58886f841740169e4c69ce86b911
MD5 4a06adffb5e524f1c5831782975fbb4c
SHA1 065f7e6c1325774c2dcf4a805cdbb2088ae47583
SHA512 814b287fedc99beb578d03b75b84d88235e228dff0df1682b764ffff2bf690dde971fae6125f4015761f13affe082e0a98dd4cd10e35d8f112e914c59c5124f7
SSDEEP 24576:zaTg0wZ14X27uUL3VM0kd+rkhfMsjgkAj2JE06J5N0Fe:+Tg3ZOcuUL3xAx/8b2S7Z0I
TLSH
T1C97523FA8E706892D5BD563205AF0F6D35F54FB37A14AC4311713D2A3F3A267A920A1C
MD5 SHA1 SHA512 SSDEEP TLSH

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logs.dat

Path C:\Users\Admin\AppData\Roaming\remcos\logs.dat
Size 79B
SHA256 8914e440f8e19285bd1ee0bf6a7732511e369c1886684d0320e83ac525bc4de5
MD5 3157e393e3b6c3c67433646cc0026aa2
SHA1 e6f77e2a4cd0e43dacae516515384cf504e4cafc
SHA512 15627765e9945048bf2e15c1cc953c2857858382513c10265a547b1c46b66d6f601d3f067ec85752320ad2b1f10ee0e8d77f75172f4f7e8bcf5f776ac89260b8
TLSH
T11AA01254C361DAC0001139E0648D35865009041437AA052950414B0902491006580251
MD5 SHA1 SHA512 TLSH

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memory/936-18-0x0000000000DE0000-0x0000000000F69000-memory.dmp

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memory/936-1-0x0000000000970000-0x0000000000973000-memory.dmp

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memory/936-2-0x0000000001010000-0x0000000001011000-memory.dmp

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memory/936-0-0x0000000000DE0000-0x0000000000F69000-memory.dmp

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memory/936-20-0x0000000000DE0000-0x0000000000F69000-memory.dmp

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memory/936-15-0x0000000000DE0000-0x0000000000F69000-memory.dmp

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memory/4664-10-0x00000000000C0000-0x00000000000E0000-memory.dmp

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memory/4664-14-0x00000000000C0000-0x00000000000E0000-memory.dmp

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memory/4664-11-0x00000000000C0000-0x00000000000E0000-memory.dmp

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memory/4664-3-0x00000000000C0000-0x00000000000E0000-memory.dmp

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memory/5656-23-0x0000000000DD0000-0x0000000000DD3000-memory.dmp

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memory/5656-33-0x0000000000DE0000-0x0000000000F69000-memory.dmp

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memory/5656-35-0x0000000000DE0000-0x0000000000F69000-memory.dmp

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memory/5656-37-0x0000000000DE0000-0x0000000000F69000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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