remcos | 805c5709be7589073f6c90410ba05d8d4240ba487fe7c8febf2de9ba214a489e

Analysis

max time kernel
138s
max time network
149s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22/03/2025, 06:14

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General

Target

953e99960b6bb27c1953eb4c62949b32b63482f7f5613bf53ae7751bb9678140.exe
Size

903KB
MD5

63fef350b2de6b1f516cac9122e8e642
SHA1

2cb07a2d417f8e18c80906dc4fc8253614520c68
SHA256

953e99960b6bb27c1953eb4c62949b32b63482f7f5613bf53ae7751bb9678140
SHA512

0575ab2275e5e0ea2b875eefecea7e7d5b8951a9508e45b97277466abfe6182f6dacbf128f5d30640a59017756fb87db66f13d01f81b70553d6dce8417b1c60f
SSDEEP

12288:tp+rgRNyA55IxJ+feDOa9rZj5XqkJD0QrOod7XxlW91RRz9Mr:tpugRNJI1D39dlfGQrFUx9Mr

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

Executes dropped EXE 2 IoCs

pid	Process
2840	sbietrcl.exe
2948	sbietrcl.exe

Loads dropped DLL 1 IoCs

pid	Process
1756	953e99960b6bb27c1953eb4c62949b32b63482f7f5613bf53ae7751bb9678140.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-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	953e99960b6bb27c1953eb4c62949b32b63482f7f5613bf53ae7751bb9678140.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2840 set thread context of 2948	2840	sbietrcl.exe	31

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	953e99960b6bb27c1953eb4c62949b32b63482f7f5613bf53ae7751bb9678140.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
1756	953e99960b6bb27c1953eb4c62949b32b63482f7f5613bf53ae7751bb9678140.exe
1756	953e99960b6bb27c1953eb4c62949b32b63482f7f5613bf53ae7751bb9678140.exe
1756	953e99960b6bb27c1953eb4c62949b32b63482f7f5613bf53ae7751bb9678140.exe
1756	953e99960b6bb27c1953eb4c62949b32b63482f7f5613bf53ae7751bb9678140.exe
1756	953e99960b6bb27c1953eb4c62949b32b63482f7f5613bf53ae7751bb9678140.exe
1756	953e99960b6bb27c1953eb4c62949b32b63482f7f5613bf53ae7751bb9678140.exe
2840	sbietrcl.exe
2840	sbietrcl.exe
2840	sbietrcl.exe
2840	sbietrcl.exe
2840	sbietrcl.exe
2840	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1756	953e99960b6bb27c1953eb4c62949b32b63482f7f5613bf53ae7751bb9678140.exe
Token: SeDebugPrivilege	2840	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2948	sbietrcl.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1756 wrote to memory of 2840	1756	953e99960b6bb27c1953eb4c62949b32b63482f7f5613bf53ae7751bb9678140.exe	30
PID 1756 wrote to memory of 2840	1756	953e99960b6bb27c1953eb4c62949b32b63482f7f5613bf53ae7751bb9678140.exe	30
PID 1756 wrote to memory of 2840	1756	953e99960b6bb27c1953eb4c62949b32b63482f7f5613bf53ae7751bb9678140.exe	30
PID 1756 wrote to memory of 2840	1756	953e99960b6bb27c1953eb4c62949b32b63482f7f5613bf53ae7751bb9678140.exe	30
PID 2840 wrote to memory of 2948	2840	sbietrcl.exe	31
PID 2840 wrote to memory of 2948	2840	sbietrcl.exe	31
PID 2840 wrote to memory of 2948	2840	sbietrcl.exe	31
PID 2840 wrote to memory of 2948	2840	sbietrcl.exe	31
PID 2840 wrote to memory of 2948	2840	sbietrcl.exe	31
PID 2840 wrote to memory of 2948	2840	sbietrcl.exe	31
PID 2840 wrote to memory of 2948	2840	sbietrcl.exe	31
PID 2840 wrote to memory of 2948	2840	sbietrcl.exe	31
PID 2840 wrote to memory of 2948	2840	sbietrcl.exe	31
PID 2840 wrote to memory of 2948	2840	sbietrcl.exe	31

C:\Users\Admin\AppData\Local\Temp\953e99960b6bb27c1953eb4c62949b32b63482f7f5613bf53ae7751bb9678140.exe
"C:\Users\Admin\AppData\Local\Temp\953e99960b6bb27c1953eb4c62949b32b63482f7f5613bf53ae7751bb9678140.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1756
- 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:2840
- - 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:2948

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

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\Local\Temp\CabC699.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

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

Filesize
909KB

MD5
b454dc6d95f410bb46dbe26265590bfb

SHA1
9955acb99da379974dde4e1d1a874beba5c9b0b5

SHA256
787c345057209f8b3866df03b354634af3e3cecc8e0f66e6aac7cdf2ddd65942

SHA512
342432c552a160c8a582bbd8a28d94c8c53b10429f2d5ae9828280bfef2d62755486fe7fd79ddf0de3f21f02a03a09912a15ba80f77de49a09c033e51bb0a38a

Download Submit
memory/1756-30-0x0000000074160000-0x000000007470B000-memory.dmp

Filesize
5.7MB

Download
memory/1756-11-0x0000000074160000-0x000000007470B000-memory.dmp

Filesize
5.7MB

Download
memory/1756-10-0x0000000074160000-0x000000007470B000-memory.dmp

Filesize
5.7MB

Download
memory/1756-23-0x0000000074160000-0x000000007470B000-memory.dmp

Filesize
5.7MB

Download
memory/1756-1-0x0000000074160000-0x000000007470B000-memory.dmp

Filesize
5.7MB

Download
memory/1756-9-0x0000000074160000-0x000000007470B000-memory.dmp

Filesize
5.7MB

Download
memory/1756-0-0x0000000074161000-0x0000000074162000-memory.dmp

Filesize
4KB

Download
memory/2840-31-0x0000000074160000-0x000000007470B000-memory.dmp

Filesize
5.7MB

Download
memory/2840-39-0x0000000074160000-0x000000007470B000-memory.dmp

Filesize
5.7MB

Download
memory/2840-41-0x0000000074160000-0x000000007470B000-memory.dmp

Filesize
5.7MB

Download
memory/2840-40-0x0000000074160000-0x000000007470B000-memory.dmp

Filesize
5.7MB

Download
memory/2840-64-0x0000000074160000-0x000000007470B000-memory.dmp

Filesize
5.7MB

Download
memory/2948-50-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2948-61-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2948-62-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2948-58-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2948-57-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2948-54-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2948-52-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2948-48-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2948-42-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2948-63-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2948-46-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2948-44-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2948-67-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download