remcos | 4e5088984e5d2304a531271ae248973b36e6d96a7f48f0dc56a92ffd951452fc

Analysis

max time kernel
140s
max time network
152s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22/03/2025, 06:17

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General

Target

0736e2c073088395349f1f3c923c211f0d62fcd794181a9dbf6d5366cabc6647.exe
Size

1.9MB
MD5

efeb41149ebe2e2a9c2f65197b26c50e
SHA1

bce5c0489fdcb97e393c8134dbada6f877a6cee8
SHA256

0736e2c073088395349f1f3c923c211f0d62fcd794181a9dbf6d5366cabc6647
SHA512

2a8462a25d2457a362d3d2fcd70480c49ae6dfa30dd699caf4196da91aa47bbd558dc0e4c1bd4270d2069ae88c59de4fb657973ec7b324197c57142e0a3bcf0d
SSDEEP

24576:wD39dlfGQrFUspugRNJI2DJnUw9W/j+BeKJWqwH6K:wF+QrFUBgq25eKu6K

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
1044	sbietrcl.exe
2748	sbietrcl.exe

Loads dropped DLL 1 IoCs

pid	Process
2132	0736e2c073088395349f1f3c923c211f0d62fcd794181a9dbf6d5366cabc6647.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-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	0736e2c073088395349f1f3c923c211f0d62fcd794181a9dbf6d5366cabc6647.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1044 set thread context of 2748	1044	sbietrcl.exe	32

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	0736e2c073088395349f1f3c923c211f0d62fcd794181a9dbf6d5366cabc6647.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
2132	0736e2c073088395349f1f3c923c211f0d62fcd794181a9dbf6d5366cabc6647.exe
2132	0736e2c073088395349f1f3c923c211f0d62fcd794181a9dbf6d5366cabc6647.exe
2132	0736e2c073088395349f1f3c923c211f0d62fcd794181a9dbf6d5366cabc6647.exe
2132	0736e2c073088395349f1f3c923c211f0d62fcd794181a9dbf6d5366cabc6647.exe
2132	0736e2c073088395349f1f3c923c211f0d62fcd794181a9dbf6d5366cabc6647.exe
2132	0736e2c073088395349f1f3c923c211f0d62fcd794181a9dbf6d5366cabc6647.exe
1044	sbietrcl.exe
1044	sbietrcl.exe
1044	sbietrcl.exe
1044	sbietrcl.exe
1044	sbietrcl.exe
1044	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2132	0736e2c073088395349f1f3c923c211f0d62fcd794181a9dbf6d5366cabc6647.exe
Token: SeDebugPrivilege	1044	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2748	sbietrcl.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2132 wrote to memory of 1044	2132	0736e2c073088395349f1f3c923c211f0d62fcd794181a9dbf6d5366cabc6647.exe	31
PID 2132 wrote to memory of 1044	2132	0736e2c073088395349f1f3c923c211f0d62fcd794181a9dbf6d5366cabc6647.exe	31
PID 2132 wrote to memory of 1044	2132	0736e2c073088395349f1f3c923c211f0d62fcd794181a9dbf6d5366cabc6647.exe	31
PID 2132 wrote to memory of 1044	2132	0736e2c073088395349f1f3c923c211f0d62fcd794181a9dbf6d5366cabc6647.exe	31
PID 1044 wrote to memory of 2748	1044	sbietrcl.exe	32
PID 1044 wrote to memory of 2748	1044	sbietrcl.exe	32
PID 1044 wrote to memory of 2748	1044	sbietrcl.exe	32
PID 1044 wrote to memory of 2748	1044	sbietrcl.exe	32
PID 1044 wrote to memory of 2748	1044	sbietrcl.exe	32
PID 1044 wrote to memory of 2748	1044	sbietrcl.exe	32
PID 1044 wrote to memory of 2748	1044	sbietrcl.exe	32
PID 1044 wrote to memory of 2748	1044	sbietrcl.exe	32
PID 1044 wrote to memory of 2748	1044	sbietrcl.exe	32
PID 1044 wrote to memory of 2748	1044	sbietrcl.exe	32

C:\Users\Admin\AppData\Local\Temp\0736e2c073088395349f1f3c923c211f0d62fcd794181a9dbf6d5366cabc6647.exe
"C:\Users\Admin\AppData\Local\Temp\0736e2c073088395349f1f3c923c211f0d62fcd794181a9dbf6d5366cabc6647.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:2132
- 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:1044
- - 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:2748

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\CabE447.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

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

Filesize
1.9MB

MD5
7bdefe6bd4a14b020ac4626d83d08c07

SHA1
80e514ddbea96e43431d9f631a49787711e5711b

SHA256
408d60691916e6c1d1e5897b5425f03097c4cea86be8ac74e2e1d84b2cbc028a

SHA512
84053f0d944acd9f80d6cc44a8cad31747ff899e504f689307dcdb1887e601775c719776f0d04872a456a27775a637c806557c14c5ea20a2eee97d0e2241bf33

Download Submit
memory/1044-31-0x0000000074C80000-0x000000007522B000-memory.dmp

Filesize
5.7MB

Download
memory/1044-60-0x0000000074C80000-0x000000007522B000-memory.dmp

Filesize
5.7MB

Download
memory/1044-30-0x0000000074C80000-0x000000007522B000-memory.dmp

Filesize
5.7MB

Download
memory/1044-39-0x0000000074C80000-0x000000007522B000-memory.dmp

Filesize
5.7MB

Download
memory/1044-40-0x0000000074C80000-0x000000007522B000-memory.dmp

Filesize
5.7MB

Download
memory/2132-10-0x0000000074C80000-0x000000007522B000-memory.dmp

Filesize
5.7MB

Download
memory/2132-11-0x0000000074C80000-0x000000007522B000-memory.dmp

Filesize
5.7MB

Download
memory/2132-1-0x0000000074C80000-0x000000007522B000-memory.dmp

Filesize
5.7MB

Download
memory/2132-29-0x0000000074C80000-0x000000007522B000-memory.dmp

Filesize
5.7MB

Download
memory/2132-2-0x0000000074C80000-0x000000007522B000-memory.dmp

Filesize
5.7MB

Download
memory/2132-0-0x0000000074C81000-0x0000000074C82000-memory.dmp

Filesize
4KB

Download
memory/2748-41-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2748-49-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2748-48-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2748-47-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2748-45-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2748-43-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2748-54-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2748-59-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2748-55-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2748-51-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2748-61-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2748-64-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download