remcos | d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308

Analysis

max time kernel
149s
max time network
154s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
30/03/2025, 20:27

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General

Target

d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe
Size

1.1MB
MD5

7b8bf7f2c6e9b98839bbdafe0690a353
SHA1

e9f8dc02084674dd9f4d5ebb22f5f3ee5c040d04
SHA256

d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308
SHA512

b5cad596eae2e12058f805e021adf15eab04377f811fa06ce7b0ee87a5594f22fcf97b3be1003615ef98770bdc4e471e54b33b7c8e5bcd99d206cac02d0e56b1
SSDEEP

24576:eaTgKwZ14X27uUL3VM0kd+rkhfMsjgkAj2JE06J5N0F6:LTgdZOcuUL3xAx/8b2S7Z0A

Score

10^/10

remcos chinemerem discovery 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

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

Executes dropped EXE 4 IoCs

pid	Process
2812	AboutSettingsHandlers.exe
2880	AboutSettingsHandlers.exe
3020	AboutSettingsHandlers.exe
2276	AboutSettingsHandlers.exe

AutoIT Executable 9 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/memory/1736-22-0x0000000000390000-0x0000000000519000-memory.dmp	autoit_exe
behavioral1/memory/1736-25-0x0000000000390000-0x0000000000519000-memory.dmp	autoit_exe
behavioral1/memory/1736-28-0x0000000000390000-0x0000000000519000-memory.dmp	autoit_exe
behavioral1/memory/2812-48-0x00000000003B0000-0x0000000000539000-memory.dmp	autoit_exe
behavioral1/memory/2812-50-0x00000000003B0000-0x0000000000539000-memory.dmp	autoit_exe
behavioral1/memory/2812-52-0x00000000003B0000-0x0000000000539000-memory.dmp	autoit_exe
behavioral1/memory/3020-71-0x0000000000350000-0x00000000004D9000-memory.dmp	autoit_exe
behavioral1/memory/3020-73-0x0000000000350000-0x00000000004D9000-memory.dmp	autoit_exe
behavioral1/memory/3020-74-0x0000000000350000-0x00000000004D9000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1736 set thread context of 2596	1736	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe	30
PID 2812 set thread context of 2880	2812	AboutSettingsHandlers.exe	35
PID 3020 set thread context of 2276	3020	AboutSettingsHandlers.exe	40

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 7 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	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.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
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 3 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2360	schtasks.exe
980	schtasks.exe
2932	schtasks.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2596	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe

Suspicious use of WriteProcessMemory 38 IoCs

description	pid	Process	procid_target
PID 1736 wrote to memory of 2596	1736	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe	30
PID 1736 wrote to memory of 2596	1736	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe	30
PID 1736 wrote to memory of 2596	1736	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe	30
PID 1736 wrote to memory of 2596	1736	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe	30
PID 1736 wrote to memory of 2596	1736	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe	30
PID 1736 wrote to memory of 2596	1736	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe	30
PID 1736 wrote to memory of 2932	1736	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe	31
PID 1736 wrote to memory of 2932	1736	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe	31
PID 1736 wrote to memory of 2932	1736	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe	31
PID 1736 wrote to memory of 2932	1736	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe	31
PID 2944 wrote to memory of 2812	2944	taskeng.exe	34
PID 2944 wrote to memory of 2812	2944	taskeng.exe	34
PID 2944 wrote to memory of 2812	2944	taskeng.exe	34
PID 2944 wrote to memory of 2812	2944	taskeng.exe	34
PID 2812 wrote to memory of 2880	2812	AboutSettingsHandlers.exe	35
PID 2812 wrote to memory of 2880	2812	AboutSettingsHandlers.exe	35
PID 2812 wrote to memory of 2880	2812	AboutSettingsHandlers.exe	35
PID 2812 wrote to memory of 2880	2812	AboutSettingsHandlers.exe	35
PID 2812 wrote to memory of 2880	2812	AboutSettingsHandlers.exe	35
PID 2812 wrote to memory of 2880	2812	AboutSettingsHandlers.exe	35
PID 2812 wrote to memory of 2360	2812	AboutSettingsHandlers.exe	37
PID 2812 wrote to memory of 2360	2812	AboutSettingsHandlers.exe	37
PID 2812 wrote to memory of 2360	2812	AboutSettingsHandlers.exe	37
PID 2812 wrote to memory of 2360	2812	AboutSettingsHandlers.exe	37
PID 2944 wrote to memory of 3020	2944	taskeng.exe	39
PID 2944 wrote to memory of 3020	2944	taskeng.exe	39
PID 2944 wrote to memory of 3020	2944	taskeng.exe	39
PID 2944 wrote to memory of 3020	2944	taskeng.exe	39
PID 3020 wrote to memory of 2276	3020	AboutSettingsHandlers.exe	40
PID 3020 wrote to memory of 2276	3020	AboutSettingsHandlers.exe	40
PID 3020 wrote to memory of 2276	3020	AboutSettingsHandlers.exe	40
PID 3020 wrote to memory of 2276	3020	AboutSettingsHandlers.exe	40
PID 3020 wrote to memory of 2276	3020	AboutSettingsHandlers.exe	40
PID 3020 wrote to memory of 2276	3020	AboutSettingsHandlers.exe	40
PID 3020 wrote to memory of 980	3020	AboutSettingsHandlers.exe	41
PID 3020 wrote to memory of 980	3020	AboutSettingsHandlers.exe	41
PID 3020 wrote to memory of 980	3020	AboutSettingsHandlers.exe	41
PID 3020 wrote to memory of 980	3020	AboutSettingsHandlers.exe	41

C:\Users\Admin\AppData\Local\Temp\d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe
"C:\Users\Admin\AppData\Local\Temp\d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1736
- C:\Users\Admin\AppData\Local\Temp\d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe
  "C:\Users\Admin\AppData\Local\Temp\d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2596
- 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:2932

C:\Windows\system32\taskeng.exe
taskeng.exe {106036DC-2C28-4D63-82CC-55866189B456} S-1-5-21-3692679935-4019334568-335155002-1000:BCXRJFKE\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2944
- C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
  C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2812
- - C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
    "C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe"
    3⤵
    - Executes dropped EXE
    PID:2880
- - 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
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2360
- C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
  C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3020
- - C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
    "C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe"
    3⤵
    - Executes dropped EXE
    PID:2276
- - 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
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:980

Network

MITRE ATT&CK Enterprise v15

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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Downloads

C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe

Filesize
1.1MB

MD5
2048838466c364f45add51fee71512ca

SHA1
60171cd63b75e0d14e74d925a390a1400f8310e1

SHA256
c4d8ab355edecf8838a57f2d973d9158aacb070c017d83ef103addfa73b46754

SHA512
0129f830da47c2cc8e8aa0bbd8ff91d3d60b2e10fe6bde987dea1f8d2adcb1ad5cf1df11c1641f9784b47b43d2abf86612ee06c1c05497b1d9d6680cdf7ec329

Download Submit
C:\Users\Admin\AppData\Roaming\remcos\logs.dat

Filesize
79B

MD5
e85cacb49f21faebbb5b9ada5c5f5489

SHA1
e0447ef011e4851e85a8fc8d4eb2cae5e826512f

SHA256
c776023c155c0784f2af341c3e197a294859c01071ec30f0fc4ea38b97a56ac5

SHA512
51f973647ba32af8b83ed528eccd2ba7fb10b7ad9de8eb65150014f7c06dfab30b1ad1bc6b550d225519d1bf0d12e12df554f1e61a74071eac6293d091209f5e

Download Submit
memory/1736-21-0x00000000000E0000-0x00000000000E3000-memory.dmp

Filesize
12KB

Download
memory/1736-1-0x00000000000E0000-0x00000000000E3000-memory.dmp

Filesize
12KB

Download
memory/1736-2-0x0000000000130000-0x0000000000131000-memory.dmp

Filesize
4KB

Download
memory/1736-0-0x0000000000390000-0x0000000000519000-memory.dmp

Filesize
1.5MB

Download
memory/1736-28-0x0000000000390000-0x0000000000519000-memory.dmp

Filesize
1.5MB

Download
memory/1736-14-0x0000000002820000-0x00000000029A9000-memory.dmp

Filesize
1.5MB

Download
memory/1736-25-0x0000000000390000-0x0000000000519000-memory.dmp

Filesize
1.5MB

Download
memory/1736-22-0x0000000000390000-0x0000000000519000-memory.dmp

Filesize
1.5MB

Download
memory/2276-67-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2596-16-0x0000000000390000-0x0000000000519000-memory.dmp

Filesize
1.5MB

Download
memory/2596-3-0x0000000000070000-0x0000000000090000-memory.dmp

Filesize
128KB

Download
memory/2596-5-0x0000000000070000-0x0000000000090000-memory.dmp

Filesize
128KB

Download
memory/2596-15-0x0000000000070000-0x0000000000090000-memory.dmp

Filesize
128KB

Download
memory/2596-17-0x0000000000070000-0x0000000000090000-memory.dmp

Filesize
128KB

Download
memory/2596-20-0x0000000000070000-0x0000000000090000-memory.dmp

Filesize
128KB

Download
memory/2596-11-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2812-52-0x00000000003B0000-0x0000000000539000-memory.dmp

Filesize
1.5MB

Download
memory/2812-48-0x00000000003B0000-0x0000000000539000-memory.dmp

Filesize
1.5MB

Download
memory/2812-50-0x00000000003B0000-0x0000000000539000-memory.dmp

Filesize
1.5MB

Download
memory/2812-35-0x00000000003B0000-0x0000000000539000-memory.dmp

Filesize
1.5MB

Download
memory/2880-44-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/3020-58-0x0000000000350000-0x00000000004D9000-memory.dmp

Filesize
1.5MB

Download
memory/3020-71-0x0000000000350000-0x00000000004D9000-memory.dmp

Filesize
1.5MB

Download
memory/3020-73-0x0000000000350000-0x00000000004D9000-memory.dmp

Filesize
1.5MB

Download
memory/3020-74-0x0000000000350000-0x00000000004D9000-memory.dmp

Filesize
1.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads