remcos | 5f6a4716611173ffff1f22fbb7309308ec84fba434559a0d03f955f7e7350edd

Analysis

max time kernel
60s
max time network
38s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
31/10/2026, 20:51

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General

Target
5f6a4716611173ffff1f22fbb7309308ec84fba434559a0d03f955f7e7350edd.exe
Size 1.5MB
Sample261031-znffwszxct
SHA256 5f6a4716611173ffff1f22fbb7309308ec84fba434559a0d03f955f7e7350edd
MD5 28f2123d93cd2d84814fe232d1948cc9
SHA1 b782a4edc96564401cdc892607bc3d8676a2f1a5
SHA512 11c2c2e5aa716ba735eeaeadcd2a65a5ec34f59d68eb578511d2b3f294dcc909ac45818bd74a4ef934e794bd9fcf1729fc6cfc39380de016347d228ea3e751df
SSDEEP 24576:zaTg0wZ14X27uUL3VM0kd+rkhfMsjgkAj2JE06J5N0Ft:+Tg3ZOcuUL3xAx/8b2S7Z0n
TLSH
T1BC7523FA8E706892D5BD563205AF0F6D35F54FB37A14AC4311713D2A7F3A267A820A1C
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 2 IoCs

pid	Process
2184	AboutSettingsHandlers.exe
4488	AboutSettingsHandlers.exe

AutoIT Executable 6 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/4952-16-0x0000000000DE0000-0x0000000000F69000-memory.dmp	autoit_exe
behavioral2/memory/4952-19-0x0000000000DE0000-0x0000000000F69000-memory.dmp	autoit_exe
behavioral2/memory/4952-21-0x0000000000DE0000-0x0000000000F69000-memory.dmp	autoit_exe
behavioral2/memory/2184-34-0x0000000000DE0000-0x0000000000F69000-memory.dmp	autoit_exe
behavioral2/memory/2184-36-0x0000000000DE0000-0x0000000000F69000-memory.dmp	autoit_exe
behavioral2/memory/2184-37-0x0000000000DE0000-0x0000000000F69000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4952 set thread context of 5928	4952	5f6a4716611173ffff1f22fbb7309308ec84fba434559a0d03f955f7e7350edd.exe	89
PID 2184 set thread context of 4488	2184	AboutSettingsHandlers.exe	94

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

discovery

System Network Configuration Discovery

T1016

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	5f6a4716611173ffff1f22fbb7309308ec84fba434559a0d03f955f7e7350edd.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	5f6a4716611173ffff1f22fbb7309308ec84fba434559a0d03f955f7e7350edd.exe

System Location Discovery: System Language Discovery 1 TTPs 5 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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5f6a4716611173ffff1f22fbb7309308ec84fba434559a0d03f955f7e7350edd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5f6a4716611173ffff1f22fbb7309308ec84fba434559a0d03f955f7e7350edd.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
2284	schtasks.exe
1184	schtasks.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5928	5f6a4716611173ffff1f22fbb7309308ec84fba434559a0d03f955f7e7350edd.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4952 wrote to memory of 5928	4952	5f6a4716611173ffff1f22fbb7309308ec84fba434559a0d03f955f7e7350edd.exe	89
PID 4952 wrote to memory of 5928	4952	5f6a4716611173ffff1f22fbb7309308ec84fba434559a0d03f955f7e7350edd.exe	89
PID 4952 wrote to memory of 1184	4952	5f6a4716611173ffff1f22fbb7309308ec84fba434559a0d03f955f7e7350edd.exe	90
PID 2184 wrote to memory of 4488	2184	AboutSettingsHandlers.exe	94
PID 2184 wrote to memory of 4488	2184	AboutSettingsHandlers.exe	94
PID 2184 wrote to memory of 2284	2184	AboutSettingsHandlers.exe	96

C:\Users\Admin\AppData\Local\Temp\5f6a4716611173ffff1f22fbb7309308ec84fba434559a0d03f955f7e7350edd.exe
"C:\Users\Admin\AppData\Local\Temp\5f6a4716611173ffff1f22fbb7309308ec84fba434559a0d03f955f7e7350edd.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4952
- C:\Users\Admin\AppData\Local\Temp\5f6a4716611173ffff1f22fbb7309308ec84fba434559a0d03f955f7e7350edd.exe
  "C:\Users\Admin\AppData\Local\Temp\5f6a4716611173ffff1f22fbb7309308ec84fba434559a0d03f955f7e7350edd.exe"
  2⤵
  - Reads the TCP/IP host and domain name from the registry
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:5928
- 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:1184

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:2184
- C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
  "C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe"
  2⤵
  - Executes dropped EXE
  PID:4488
- 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:2284

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

System Network Configuration Discovery

T1016

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

AboutSettingsHandlers.exe

Path C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
Size 1.5MB
SHA256 c239888c2fee9e16c7ee2b1f08250fe7f8815dbce78c463d267322ac17755dc8
MD5 6d3e433eadf2a29ce3a0446481a7cb6f
SHA1 a3e6db7bbbac337a23c33d5fe51268f430dc783f
SHA512 59d2435b10123f794a259dc1feaef02e42633c3811d9e723168fc34740dca49fd4e030f75a922036117c7c0b29df7e1f52512c0822bbae07a614d0df45208ff2
SSDEEP 24576:zaTg0wZ14X27uUL3VM0kd+rkhfMsjgkAj2JE06J5N0Fg:+Tg3ZOcuUL3xAx/8b2S7Z0G
TLSH
T1B37523FA8E706892D5BD563205AF0F6D35F54FB37A14AC4311713D2A7F3A267A820A1C
MD5 SHA1 SHA512 SSDEEP TLSH

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logs.dat

Path C:\Users\Admin\AppData\Roaming\remcos\logs.dat
Size 79B
SHA256 ced0b32b01a42ab64d91496cac6aa1a1519a8d4a988bda27f42e0ab02438449e
MD5 04b096b365f5d71047c2fa9b4101676b
SHA1 19e36ad0d52cf9740c8a216f74073c66e67db035
SHA512 6bad2423228163ca55f8de109a1559cc2bd7b5338ede2dcd2504c6df2f3051e63677c7c89c8b6280b44dd4c4b5fcb44aca1882519ce1ae1fd6a452b26823556c
TLSH
T11AA0124686208945101124E0714C345B904A142939A60406D0125B0D028C2106980151
MD5 SHA1 SHA512 TLSH

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memory/2184-37-0x0000000000DE0000-0x0000000000F69000-memory.dmp

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memory/2184-36-0x0000000000DE0000-0x0000000000F69000-memory.dmp

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memory/2184-34-0x0000000000DE0000-0x0000000000F69000-memory.dmp

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memory/2184-24-0x0000000000DC0000-0x0000000000DC3000-memory.dmp

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memory/4952-16-0x0000000000DE0000-0x0000000000F69000-memory.dmp

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memory/4952-15-0x0000000000DC0000-0x0000000000DC3000-memory.dmp

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memory/4952-0-0x0000000000DE0000-0x0000000000F69000-memory.dmp

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memory/4952-19-0x0000000000DE0000-0x0000000000F69000-memory.dmp

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memory/4952-21-0x0000000000DE0000-0x0000000000F69000-memory.dmp

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memory/4952-2-0x0000000001890000-0x0000000001891000-memory.dmp

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memory/4952-1-0x0000000000DC0000-0x0000000000DC3000-memory.dmp

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memory/5928-14-0x00000000000C0000-0x00000000000E0000-memory.dmp

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memory/5928-11-0x00000000000C0000-0x00000000000E0000-memory.dmp

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memory/5928-10-0x00000000000C0000-0x00000000000E0000-memory.dmp

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memory/5928-3-0x00000000000C0000-0x00000000000E0000-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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