remcos | 6681cb73deb0effc4f44f704c6bddb07e98c1f8da4c8478cca7ddd49abdb0c3f

Analysis

max time kernel
139s
max time network
158s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-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

Executes dropped EXE 2 IoCs

pid	Process
2340	sbietrcl.exe
2168	sbietrcl.exe

Loads dropped DLL 2 IoCs

pid	Process
2188	1c2345047abfb5daed017769f13254053b7c8cfe14027982065835c6a4bc9aa0.exe
2340	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-1-5-21-2703099537-420551529-3771253338-1000\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 2340 set thread context of 2168	2340	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	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
2188	1c2345047abfb5daed017769f13254053b7c8cfe14027982065835c6a4bc9aa0.exe
2188	1c2345047abfb5daed017769f13254053b7c8cfe14027982065835c6a4bc9aa0.exe
2188	1c2345047abfb5daed017769f13254053b7c8cfe14027982065835c6a4bc9aa0.exe
2188	1c2345047abfb5daed017769f13254053b7c8cfe14027982065835c6a4bc9aa0.exe
2188	1c2345047abfb5daed017769f13254053b7c8cfe14027982065835c6a4bc9aa0.exe
2188	1c2345047abfb5daed017769f13254053b7c8cfe14027982065835c6a4bc9aa0.exe
2340	sbietrcl.exe
2340	sbietrcl.exe
2340	sbietrcl.exe
2340	sbietrcl.exe
2340	sbietrcl.exe
2340	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2188	1c2345047abfb5daed017769f13254053b7c8cfe14027982065835c6a4bc9aa0.exe
Token: SeDebugPrivilege	2340	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2168	sbietrcl.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2188 wrote to memory of 2340	2188	1c2345047abfb5daed017769f13254053b7c8cfe14027982065835c6a4bc9aa0.exe	30
PID 2188 wrote to memory of 2340	2188	1c2345047abfb5daed017769f13254053b7c8cfe14027982065835c6a4bc9aa0.exe	30
PID 2188 wrote to memory of 2340	2188	1c2345047abfb5daed017769f13254053b7c8cfe14027982065835c6a4bc9aa0.exe	30
PID 2188 wrote to memory of 2340	2188	1c2345047abfb5daed017769f13254053b7c8cfe14027982065835c6a4bc9aa0.exe	30
PID 2340 wrote to memory of 2168	2340	sbietrcl.exe	31
PID 2340 wrote to memory of 2168	2340	sbietrcl.exe	31
PID 2340 wrote to memory of 2168	2340	sbietrcl.exe	31
PID 2340 wrote to memory of 2168	2340	sbietrcl.exe	31
PID 2340 wrote to memory of 2168	2340	sbietrcl.exe	31
PID 2340 wrote to memory of 2168	2340	sbietrcl.exe	31
PID 2340 wrote to memory of 2168	2340	sbietrcl.exe	31
PID 2340 wrote to memory of 2168	2340	sbietrcl.exe	31
PID 2340 wrote to memory of 2168	2340	sbietrcl.exe	31
PID 2340 wrote to memory of 2168	2340	sbietrcl.exe	31

C:\Users\Admin\AppData\Local\Temp\1c2345047abfb5daed017769f13254053b7c8cfe14027982065835c6a4bc9aa0.exe
"C:\Users\Admin\AppData\Local\Temp\1c2345047abfb5daed017769f13254053b7c8cfe14027982065835c6a4bc9aa0.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:2188
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2340
- - 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:2168

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\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
342B

MD5
40ca96e0ed10369126a9e46b5a5f3a63

SHA1
2cec116f70862928f2d11e39b0d67dd7d74a28e6

SHA256
2ca5a4fe29a9023cd5c246f6b9da8dab9c0890b69f2abc316f1d3cae86631558

SHA512
99e7a81083dc1d2da1af995f5ff9be693b6c48d432fce5f4e08e68f9f02c83e28fe09b944b6eb9e0f0323b08b5fef2da4604c88eea25b6a930a81f10381cb9db

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab8288.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

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

Filesize
1.7MB

MD5
0a18d56f34538070a8a715ec937a8929

SHA1
0ae813ceb71e5dc1e4ace6b1def908041bf4b3b4

SHA256
8a7e36230788c35f10b15313f478cd339dd30e609bf25d56be769a22a8bc0736

SHA512
4264c9e915db1a30901025078828c82c353855f255fbc5ddefe75078dc0f5dc1eaa2a1fe8270c11fc8f051319409fbb2e52938399f51334a43291a7f4a50f8e6

Download Submit
memory/2168-44-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2168-60-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2168-69-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2168-52-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2168-54-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2168-46-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2168-59-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2168-48-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2168-50-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2168-56-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2168-65-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2168-64-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2168-63-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2188-12-0x0000000074350000-0x00000000748FB000-memory.dmp

Filesize
5.7MB

Download
memory/2188-30-0x0000000074350000-0x00000000748FB000-memory.dmp

Filesize
5.7MB

Download
memory/2188-8-0x0000000074350000-0x00000000748FB000-memory.dmp

Filesize
5.7MB

Download
memory/2188-11-0x0000000074350000-0x00000000748FB000-memory.dmp

Filesize
5.7MB

Download
memory/2188-0-0x0000000074351000-0x0000000074352000-memory.dmp

Filesize
4KB

Download
memory/2340-40-0x0000000074350000-0x00000000748FB000-memory.dmp

Filesize
5.7MB

Download
memory/2340-66-0x0000000074350000-0x00000000748FB000-memory.dmp

Filesize
5.7MB

Download
memory/2340-41-0x0000000074350000-0x00000000748FB000-memory.dmp

Filesize
5.7MB

Download
memory/2340-42-0x0000000074350000-0x00000000748FB000-memory.dmp

Filesize
5.7MB

Download
memory/2340-31-0x0000000074350000-0x00000000748FB000-memory.dmp

Filesize
5.7MB

Download