remcos | fd198cf3ef764ffa17e7bd465d666057804a25ed5c6061074c0de7b6df43a667

Analysis

max time kernel
142s
max time network
158s
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, 06:09

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General

Target

2fd4eb3e27778484c6c7d957a980c00563b9e5b83750393d08aa39154a7cff82.exe
Size

1.7MB
MD5

af3051e752cce78b57735f04d7d5c848
SHA1

e64d7999e191b361d85634cb9144bad9026d070d
SHA256

2fd4eb3e27778484c6c7d957a980c00563b9e5b83750393d08aa39154a7cff82
SHA512

113ccb90d689343e5512975e5c277dd6bb3aa5422cfdc4ccffd85ca3831277fd4c0a5559cce1c6531c88691cb2172287820975f435ebb737a6f72baf92a06613
SSDEEP

24576:DD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjos:Dp7E+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	2fd4eb3e27778484c6c7d957a980c00563b9e5b83750393d08aa39154a7cff82.exe

Executes dropped EXE 2 IoCs

pid	Process
3896	sbietrcl.exe
2900	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"	2fd4eb3e27778484c6c7d957a980c00563b9e5b83750393d08aa39154a7cff82.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3896 set thread context of 2900	3896	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	sbietrcl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2fd4eb3e27778484c6c7d957a980c00563b9e5b83750393d08aa39154a7cff82.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
3940	2fd4eb3e27778484c6c7d957a980c00563b9e5b83750393d08aa39154a7cff82.exe
3940	2fd4eb3e27778484c6c7d957a980c00563b9e5b83750393d08aa39154a7cff82.exe
3940	2fd4eb3e27778484c6c7d957a980c00563b9e5b83750393d08aa39154a7cff82.exe
3940	2fd4eb3e27778484c6c7d957a980c00563b9e5b83750393d08aa39154a7cff82.exe
3940	2fd4eb3e27778484c6c7d957a980c00563b9e5b83750393d08aa39154a7cff82.exe
3940	2fd4eb3e27778484c6c7d957a980c00563b9e5b83750393d08aa39154a7cff82.exe
3896	sbietrcl.exe
3896	sbietrcl.exe
3896	sbietrcl.exe
3896	sbietrcl.exe
3896	sbietrcl.exe
3896	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3940	2fd4eb3e27778484c6c7d957a980c00563b9e5b83750393d08aa39154a7cff82.exe
Token: SeDebugPrivilege	3896	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2900	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3940 wrote to memory of 3896	3940	2fd4eb3e27778484c6c7d957a980c00563b9e5b83750393d08aa39154a7cff82.exe	89
PID 3940 wrote to memory of 3896	3940	2fd4eb3e27778484c6c7d957a980c00563b9e5b83750393d08aa39154a7cff82.exe	89
PID 3940 wrote to memory of 3896	3940	2fd4eb3e27778484c6c7d957a980c00563b9e5b83750393d08aa39154a7cff82.exe	89
PID 3896 wrote to memory of 2900	3896	sbietrcl.exe	90
PID 3896 wrote to memory of 2900	3896	sbietrcl.exe	90
PID 3896 wrote to memory of 2900	3896	sbietrcl.exe	90
PID 3896 wrote to memory of 2900	3896	sbietrcl.exe	90
PID 3896 wrote to memory of 2900	3896	sbietrcl.exe	90
PID 3896 wrote to memory of 2900	3896	sbietrcl.exe	90
PID 3896 wrote to memory of 2900	3896	sbietrcl.exe	90
PID 3896 wrote to memory of 2900	3896	sbietrcl.exe	90
PID 3896 wrote to memory of 2900	3896	sbietrcl.exe	90

C:\Users\Admin\AppData\Local\Temp\2fd4eb3e27778484c6c7d957a980c00563b9e5b83750393d08aa39154a7cff82.exe
"C:\Users\Admin\AppData\Local\Temp\2fd4eb3e27778484c6c7d957a980c00563b9e5b83750393d08aa39154a7cff82.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:3940
- 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:3896
- - 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:2900

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
7b59efaa5d9d1d7413a9e7da6fbc1049

SHA1
d72ebfa01d565b7497206023e3c8c372c49c2d12

SHA256
eb9b9577e51d588662e674613ae58f44cf37045c4dfd77bf289941518f7d9839

SHA512
838bc75bec4a068a8c4749994939156e9aabdd2f0b04870e136418b67f3f81a7c3983b337cf90db5fec5b26984127ba235d7df690dbb88bc6b1148b9caab2e79

Download Submit
memory/2900-50-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2900-46-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2900-43-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2900-44-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2900-40-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2900-39-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2900-36-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3896-32-0x0000000074880000-0x0000000074E31000-memory.dmp

Filesize
5.7MB

Download
memory/3896-35-0x0000000074880000-0x0000000074E31000-memory.dmp

Filesize
5.7MB

Download
memory/3896-47-0x0000000074880000-0x0000000074E31000-memory.dmp

Filesize
5.7MB

Download
memory/3896-33-0x0000000074880000-0x0000000074E31000-memory.dmp

Filesize
5.7MB

Download
memory/3896-34-0x0000000074880000-0x0000000074E31000-memory.dmp

Filesize
5.7MB

Download
memory/3940-19-0x0000000074880000-0x0000000074E31000-memory.dmp

Filesize
5.7MB

Download
memory/3940-20-0x0000000074880000-0x0000000074E31000-memory.dmp

Filesize
5.7MB

Download
memory/3940-31-0x0000000074880000-0x0000000074E31000-memory.dmp

Filesize
5.7MB

Download
memory/3940-18-0x0000000074882000-0x0000000074883000-memory.dmp

Filesize
4KB

Download
memory/3940-6-0x0000000074880000-0x0000000074E31000-memory.dmp

Filesize
5.7MB

Download
memory/3940-5-0x0000000074880000-0x0000000074E31000-memory.dmp

Filesize
5.7MB

Download
memory/3940-2-0x0000000074880000-0x0000000074E31000-memory.dmp

Filesize
5.7MB

Download
memory/3940-0-0x0000000074882000-0x0000000074883000-memory.dmp

Filesize
4KB

Download
memory/3940-1-0x0000000074880000-0x0000000074E31000-memory.dmp

Filesize
5.7MB

Download