remcos | 01ffe9d6f323a1dafd7dbe75338596cb03cdbe970cdc964543ae03006c1ece85

Analysis

max time kernel
141s
max time network
155s
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, 19:06

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General

Target

1e320ed242153c25553c2a0c1901ddfa69f0a747cb278608e43043311649b5cb.exe
Size

1.7MB
MD5

f33096aa28da8c14b681861c1f89c017
SHA1

3f98457b66376ef305ac89380b25e45a1677e494
SHA256

1e320ed242153c25553c2a0c1901ddfa69f0a747cb278608e43043311649b5cb
SHA512

d4a6b9eaf6f66660316d83b67b35623ba5faefd2ebe457b820b4972d9e472864f18897019582982218852a67067b9bdd96dff3cdb0adb93c3f63d1d5f294fdc8
SSDEEP

24576:5D39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjoy:5p7E+QrFUBgq2X

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-1-5-21-3218366390-1258052702-4267193707-1000\Control Panel\International\Geo\Nation	1e320ed242153c25553c2a0c1901ddfa69f0a747cb278608e43043311649b5cb.exe

Executes dropped EXE 2 IoCs

pid	Process
1320	sbietrcl.exe
1584	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-1-5-21-3218366390-1258052702-4267193707-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	1e320ed242153c25553c2a0c1901ddfa69f0a747cb278608e43043311649b5cb.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1320 set thread context of 1584	1320	sbietrcl.exe	94

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	1e320ed242153c25553c2a0c1901ddfa69f0a747cb278608e43043311649b5cb.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
2636	1e320ed242153c25553c2a0c1901ddfa69f0a747cb278608e43043311649b5cb.exe
2636	1e320ed242153c25553c2a0c1901ddfa69f0a747cb278608e43043311649b5cb.exe
2636	1e320ed242153c25553c2a0c1901ddfa69f0a747cb278608e43043311649b5cb.exe
2636	1e320ed242153c25553c2a0c1901ddfa69f0a747cb278608e43043311649b5cb.exe
2636	1e320ed242153c25553c2a0c1901ddfa69f0a747cb278608e43043311649b5cb.exe
2636	1e320ed242153c25553c2a0c1901ddfa69f0a747cb278608e43043311649b5cb.exe
1320	sbietrcl.exe
1320	sbietrcl.exe
1320	sbietrcl.exe
1320	sbietrcl.exe
1320	sbietrcl.exe
1320	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2636	1e320ed242153c25553c2a0c1901ddfa69f0a747cb278608e43043311649b5cb.exe
Token: SeDebugPrivilege	1320	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1584	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2636 wrote to memory of 1320	2636	1e320ed242153c25553c2a0c1901ddfa69f0a747cb278608e43043311649b5cb.exe	92
PID 2636 wrote to memory of 1320	2636	1e320ed242153c25553c2a0c1901ddfa69f0a747cb278608e43043311649b5cb.exe	92
PID 2636 wrote to memory of 1320	2636	1e320ed242153c25553c2a0c1901ddfa69f0a747cb278608e43043311649b5cb.exe	92
PID 1320 wrote to memory of 1584	1320	sbietrcl.exe	94
PID 1320 wrote to memory of 1584	1320	sbietrcl.exe	94
PID 1320 wrote to memory of 1584	1320	sbietrcl.exe	94
PID 1320 wrote to memory of 1584	1320	sbietrcl.exe	94
PID 1320 wrote to memory of 1584	1320	sbietrcl.exe	94
PID 1320 wrote to memory of 1584	1320	sbietrcl.exe	94
PID 1320 wrote to memory of 1584	1320	sbietrcl.exe	94
PID 1320 wrote to memory of 1584	1320	sbietrcl.exe	94
PID 1320 wrote to memory of 1584	1320	sbietrcl.exe	94

C:\Users\Admin\AppData\Local\Temp\1e320ed242153c25553c2a0c1901ddfa69f0a747cb278608e43043311649b5cb.exe
"C:\Users\Admin\AppData\Local\Temp\1e320ed242153c25553c2a0c1901ddfa69f0a747cb278608e43043311649b5cb.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:2636
- 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:1320
- - 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:1584

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
f97b638593d8b16532d8582a065fda47

SHA1
a6eb0bb6053e057365281fa45a5b91614607ac37

SHA256
8891debf95ba19797adfb72be8dd55f1af686a5234f46a5d02a5d9e868920f79

SHA512
9492e09e1a7aba856143128396536d07e41af2ac95a13e3922a47573ab02448c58c88a538955bcf1ca2de8e0cdd190d28387742b57bc781d2cce8bca1d1b8ac0

Download Submit
memory/1320-44-0x00000000751D0000-0x0000000075781000-memory.dmp

Filesize
5.7MB

Download
memory/1320-32-0x00000000751D0000-0x0000000075781000-memory.dmp

Filesize
5.7MB

Download
memory/1320-31-0x00000000751D0000-0x0000000075781000-memory.dmp

Filesize
5.7MB

Download
memory/1320-30-0x00000000751D0000-0x0000000075781000-memory.dmp

Filesize
5.7MB

Download
memory/1320-29-0x00000000751D0000-0x0000000075781000-memory.dmp

Filesize
5.7MB

Download
memory/1584-37-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1584-41-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1584-47-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1584-43-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1584-40-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1584-36-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1584-33-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2636-2-0x00000000751D0000-0x0000000075781000-memory.dmp

Filesize
5.7MB

Download
memory/2636-3-0x00000000751D0000-0x0000000075781000-memory.dmp

Filesize
5.7MB

Download
memory/2636-0-0x00000000751D2000-0x00000000751D3000-memory.dmp

Filesize
4KB

Download
memory/2636-17-0x00000000751D0000-0x0000000075781000-memory.dmp

Filesize
5.7MB

Download
memory/2636-4-0x00000000751D0000-0x0000000075781000-memory.dmp

Filesize
5.7MB

Download
memory/2636-16-0x00000000751D2000-0x00000000751D3000-memory.dmp

Filesize
4KB

Download
memory/2636-1-0x00000000751D0000-0x0000000075781000-memory.dmp

Filesize
5.7MB

Download
memory/2636-28-0x00000000751D0000-0x0000000075781000-memory.dmp

Filesize
5.7MB

Download