remcos | add6234329d65ae878b6112d7d63d6641b842d28c0fa2fa5fbbb09a1b835bc0c

Analysis

max time kernel
141s
max time network
156s
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

2225aa5547f360f85048a5ead0ad3d980d89c0d213fb60544912c2eafa29c366.exe
Size

1.9MB
MD5

b9867e22e55a07a407707cab1812c4cf
SHA1

d2a0e5476d102309a84319b95fa223aee8be2be9
SHA256

2225aa5547f360f85048a5ead0ad3d980d89c0d213fb60544912c2eafa29c366
SHA512

afc0dea22b1c6efd6c801b38cdce7df0693df5da59f046f90808698eada1f630224d524dd918505ecaa672c3f106d893d30828d05a4966a22f02b6328a63d859
SSDEEP

24576:yD39dlfGQrFUspugRNJI2DJnUw9W/j+BeKJWqwH6L:yF+QrFUBgq25eKu6L

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-1-5-21-1062200478-553497403-3857448183-1000\Control Panel\International\Geo\Nation	2225aa5547f360f85048a5ead0ad3d980d89c0d213fb60544912c2eafa29c366.exe

Executes dropped EXE 2 IoCs

pid	Process
4560	sbietrcl.exe
4684	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-1-5-21-1062200478-553497403-3857448183-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	2225aa5547f360f85048a5ead0ad3d980d89c0d213fb60544912c2eafa29c366.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4560 set thread context of 4684	4560	sbietrcl.exe	88

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	2225aa5547f360f85048a5ead0ad3d980d89c0d213fb60544912c2eafa29c366.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
1700	2225aa5547f360f85048a5ead0ad3d980d89c0d213fb60544912c2eafa29c366.exe
1700	2225aa5547f360f85048a5ead0ad3d980d89c0d213fb60544912c2eafa29c366.exe
1700	2225aa5547f360f85048a5ead0ad3d980d89c0d213fb60544912c2eafa29c366.exe
1700	2225aa5547f360f85048a5ead0ad3d980d89c0d213fb60544912c2eafa29c366.exe
1700	2225aa5547f360f85048a5ead0ad3d980d89c0d213fb60544912c2eafa29c366.exe
1700	2225aa5547f360f85048a5ead0ad3d980d89c0d213fb60544912c2eafa29c366.exe
4560	sbietrcl.exe
4560	sbietrcl.exe
4560	sbietrcl.exe
4560	sbietrcl.exe
4560	sbietrcl.exe
4560	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1700	2225aa5547f360f85048a5ead0ad3d980d89c0d213fb60544912c2eafa29c366.exe
Token: SeDebugPrivilege	4560	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4684	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1700 wrote to memory of 4560	1700	2225aa5547f360f85048a5ead0ad3d980d89c0d213fb60544912c2eafa29c366.exe	87
PID 1700 wrote to memory of 4560	1700	2225aa5547f360f85048a5ead0ad3d980d89c0d213fb60544912c2eafa29c366.exe	87
PID 1700 wrote to memory of 4560	1700	2225aa5547f360f85048a5ead0ad3d980d89c0d213fb60544912c2eafa29c366.exe	87
PID 4560 wrote to memory of 4684	4560	sbietrcl.exe	88
PID 4560 wrote to memory of 4684	4560	sbietrcl.exe	88
PID 4560 wrote to memory of 4684	4560	sbietrcl.exe	88
PID 4560 wrote to memory of 4684	4560	sbietrcl.exe	88
PID 4560 wrote to memory of 4684	4560	sbietrcl.exe	88
PID 4560 wrote to memory of 4684	4560	sbietrcl.exe	88
PID 4560 wrote to memory of 4684	4560	sbietrcl.exe	88
PID 4560 wrote to memory of 4684	4560	sbietrcl.exe	88
PID 4560 wrote to memory of 4684	4560	sbietrcl.exe	88

C:\Users\Admin\AppData\Local\Temp\2225aa5547f360f85048a5ead0ad3d980d89c0d213fb60544912c2eafa29c366.exe
"C:\Users\Admin\AppData\Local\Temp\2225aa5547f360f85048a5ead0ad3d980d89c0d213fb60544912c2eafa29c366.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:1700
- 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:4560
- - 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:4684

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
1.9MB

MD5
568a1b8a13aab88d1f59928bf440f630

SHA1
a7cf10895b8dfe5ed35299b37acd67e13627e86e

SHA256
0ddc56a37638eb2d78291678c52768ba4bbcdd5902e00a28f8ef6d352d3f288d

SHA512
59ea7fe688f9e553ab957dcdcf101fe047b358739450d1e19a01b0a5de67861c229ec21a2180b34d603804754a5d5035851c28f43c7e516d56aa8e70f913251e

Download Submit
memory/1700-0-0x0000000074F52000-0x0000000074F53000-memory.dmp

Filesize
4KB

Download
memory/1700-1-0x0000000074F50000-0x0000000075501000-memory.dmp

Filesize
5.7MB

Download
memory/1700-2-0x0000000074F50000-0x0000000075501000-memory.dmp

Filesize
5.7MB

Download
memory/1700-5-0x0000000074F50000-0x0000000075501000-memory.dmp

Filesize
5.7MB

Download
memory/1700-6-0x0000000074F50000-0x0000000075501000-memory.dmp

Filesize
5.7MB

Download
memory/1700-18-0x0000000074F52000-0x0000000074F53000-memory.dmp

Filesize
4KB

Download
memory/1700-19-0x0000000074F50000-0x0000000075501000-memory.dmp

Filesize
5.7MB

Download
memory/1700-30-0x0000000074F50000-0x0000000075501000-memory.dmp

Filesize
5.7MB

Download
memory/4560-31-0x0000000074F50000-0x0000000075501000-memory.dmp

Filesize
5.7MB

Download
memory/4560-32-0x0000000074F50000-0x0000000075501000-memory.dmp

Filesize
5.7MB

Download
memory/4560-33-0x0000000074F50000-0x0000000075501000-memory.dmp

Filesize
5.7MB

Download
memory/4560-34-0x0000000074F50000-0x0000000075501000-memory.dmp

Filesize
5.7MB

Download
memory/4560-46-0x0000000074F50000-0x0000000075501000-memory.dmp

Filesize
5.7MB

Download
memory/4684-35-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4684-44-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4684-45-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4684-43-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4684-40-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4684-38-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4684-49-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download