remcos | 6681cb73deb0effc4f44f704c6bddb07e98c1f8da4c8478cca7ddd49abdb0c3f

Analysis

max time kernel
142s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
22/03/2025, 06:08

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General

Target

1c2345047abfb5daed017769f13254053b7c8cfe14027982065835c6a4bc9aa0.exe
Size

1.7MB
MD5

0b8863f2ca44fc72217c48308d38387f
SHA1

519fc543f053e7d7967f8eee3854c4dac8d7d479
SHA256

1c2345047abfb5daed017769f13254053b7c8cfe14027982065835c6a4bc9aa0
SHA512

9c261d8e8a75eb80c2348a180084522ef11231d570ecb0f826ce45248d5c7fa232389891155177f813ad1a79f26ee459174fa81143f62db66db66098759b4bef
SSDEEP

24576:yD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjom:yp7E+QrFUBgq2r

Score

10^/10

remcos host discovery persistence rat spyware stealer

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

213.183.58.19:4000

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
read.dat
keylog_flag
false
keylog_folder
CastC
keylog_path
%AppData%
mouse_option
false
mutex
remcos_sccafsoidz
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screens
screenshot_path
%AppData%
screenshot_time
1
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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3920955164-3782810283-1225622749-1000\Control Panel\International\Geo\Nation	1c2345047abfb5daed017769f13254053b7c8cfe14027982065835c6a4bc9aa0.exe

Executes dropped EXE 2 IoCs

pid	Process
4836	sbietrcl.exe
5052	sbietrcl.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

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-1-5-21-3920955164-3782810283-1225622749-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	1c2345047abfb5daed017769f13254053b7c8cfe14027982065835c6a4bc9aa0.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4836 set thread context of 5052	4836	sbietrcl.exe	90

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 3 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	1c2345047abfb5daed017769f13254053b7c8cfe14027982065835c6a4bc9aa0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
1104	1c2345047abfb5daed017769f13254053b7c8cfe14027982065835c6a4bc9aa0.exe
1104	1c2345047abfb5daed017769f13254053b7c8cfe14027982065835c6a4bc9aa0.exe
1104	1c2345047abfb5daed017769f13254053b7c8cfe14027982065835c6a4bc9aa0.exe
1104	1c2345047abfb5daed017769f13254053b7c8cfe14027982065835c6a4bc9aa0.exe
1104	1c2345047abfb5daed017769f13254053b7c8cfe14027982065835c6a4bc9aa0.exe
1104	1c2345047abfb5daed017769f13254053b7c8cfe14027982065835c6a4bc9aa0.exe
4836	sbietrcl.exe
4836	sbietrcl.exe
4836	sbietrcl.exe
4836	sbietrcl.exe
4836	sbietrcl.exe
4836	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1104	1c2345047abfb5daed017769f13254053b7c8cfe14027982065835c6a4bc9aa0.exe
Token: SeDebugPrivilege	4836	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5052	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1104 wrote to memory of 4836	1104	1c2345047abfb5daed017769f13254053b7c8cfe14027982065835c6a4bc9aa0.exe	89
PID 1104 wrote to memory of 4836	1104	1c2345047abfb5daed017769f13254053b7c8cfe14027982065835c6a4bc9aa0.exe	89
PID 1104 wrote to memory of 4836	1104	1c2345047abfb5daed017769f13254053b7c8cfe14027982065835c6a4bc9aa0.exe	89
PID 4836 wrote to memory of 5052	4836	sbietrcl.exe	90
PID 4836 wrote to memory of 5052	4836	sbietrcl.exe	90
PID 4836 wrote to memory of 5052	4836	sbietrcl.exe	90
PID 4836 wrote to memory of 5052	4836	sbietrcl.exe	90
PID 4836 wrote to memory of 5052	4836	sbietrcl.exe	90
PID 4836 wrote to memory of 5052	4836	sbietrcl.exe	90
PID 4836 wrote to memory of 5052	4836	sbietrcl.exe	90
PID 4836 wrote to memory of 5052	4836	sbietrcl.exe	90
PID 4836 wrote to memory of 5052	4836	sbietrcl.exe	90

C:\Users\Admin\AppData\Local\Temp\1c2345047abfb5daed017769f13254053b7c8cfe14027982065835c6a4bc9aa0.exe
"C:\Users\Admin\AppData\Local\Temp\1c2345047abfb5daed017769f13254053b7c8cfe14027982065835c6a4bc9aa0.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1104
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"
  2⤵
  - 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:4836
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:5052

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

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe

Filesize
1.7MB

MD5
3dde06982003b0e533a684df3964d63e

SHA1
13247f80d6a518716b9f121591d1eeea814fc680

SHA256
1e9f626bab720bb552f865e01a7f3b33edb848047fdcf0404d9864c7bc9088bd

SHA512
3aafe2560ba495366749738aea8e75ee415f50ef69236a2b10086711a214fa68bdc963ffec4d304dd9fc6fd6a1272451023e5862aaa7f7ef13b36242425e10af

Download Submit
memory/1104-0-0x0000000074D52000-0x0000000074D53000-memory.dmp

Filesize
4KB

Download
memory/1104-1-0x0000000074D50000-0x0000000075301000-memory.dmp

Filesize
5.7MB

Download
memory/1104-2-0x0000000074D50000-0x0000000075301000-memory.dmp

Filesize
5.7MB

Download
memory/1104-5-0x0000000074D50000-0x0000000075301000-memory.dmp

Filesize
5.7MB

Download
memory/1104-6-0x0000000074D50000-0x0000000075301000-memory.dmp

Filesize
5.7MB

Download
memory/1104-18-0x0000000074D52000-0x0000000074D53000-memory.dmp

Filesize
4KB

Download
memory/1104-19-0x0000000074D50000-0x0000000075301000-memory.dmp

Filesize
5.7MB

Download
memory/1104-20-0x0000000074D50000-0x0000000075301000-memory.dmp

Filesize
5.7MB

Download
memory/1104-31-0x0000000074D50000-0x0000000075301000-memory.dmp

Filesize
5.7MB

Download
memory/4836-32-0x0000000074D50000-0x0000000075301000-memory.dmp

Filesize
5.7MB

Download
memory/4836-33-0x0000000074D50000-0x0000000075301000-memory.dmp

Filesize
5.7MB

Download
memory/4836-34-0x0000000074D50000-0x0000000075301000-memory.dmp

Filesize
5.7MB

Download
memory/4836-35-0x0000000074D50000-0x0000000075301000-memory.dmp

Filesize
5.7MB

Download
memory/4836-47-0x0000000074D50000-0x0000000075301000-memory.dmp

Filesize
5.7MB

Download
memory/5052-39-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/5052-46-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/5052-45-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/5052-41-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/5052-44-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/5052-36-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/5052-50-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download