remcos | e9e6a5e4d64f01b158801bbaead6aedfeeb8cd754e734d1471f591ca3e2c08f8

Analysis

max time kernel
140s
max time network
153s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
22/03/2025, 06:17

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General

Target

da4889c62855c58d6c05523169436f46cac74ad92b8e173c443bc8225cc8e7ff.exe
Size

1.7MB
MD5

9af5fe2641401056a984b15f527969ca
SHA1

6d71a8f2b329bbb10c2f216070b0c4b2d99f8cfb
SHA256

da4889c62855c58d6c05523169436f46cac74ad92b8e173c443bc8225cc8e7ff
SHA512

025fa7b5755138dc84524665a3c5311e8202eb47129f223397fc5b12d1718dc99652383917e0137db630f5a7807f5d98b790d5e6d224b166b9fac51bc1613975
SSDEEP

24576:DD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjo7:Dp7E+QrFUBgq2K

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
3036	sbietrcl.exe
2788	sbietrcl.exe

Loads dropped DLL 1 IoCs

pid	Process
1384	da4889c62855c58d6c05523169436f46cac74ad92b8e173c443bc8225cc8e7ff.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"	da4889c62855c58d6c05523169436f46cac74ad92b8e173c443bc8225cc8e7ff.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3036 set thread context of 2788	3036	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	da4889c62855c58d6c05523169436f46cac74ad92b8e173c443bc8225cc8e7ff.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
1384	da4889c62855c58d6c05523169436f46cac74ad92b8e173c443bc8225cc8e7ff.exe
1384	da4889c62855c58d6c05523169436f46cac74ad92b8e173c443bc8225cc8e7ff.exe
1384	da4889c62855c58d6c05523169436f46cac74ad92b8e173c443bc8225cc8e7ff.exe
1384	da4889c62855c58d6c05523169436f46cac74ad92b8e173c443bc8225cc8e7ff.exe
1384	da4889c62855c58d6c05523169436f46cac74ad92b8e173c443bc8225cc8e7ff.exe
1384	da4889c62855c58d6c05523169436f46cac74ad92b8e173c443bc8225cc8e7ff.exe
3036	sbietrcl.exe
3036	sbietrcl.exe
3036	sbietrcl.exe
3036	sbietrcl.exe
3036	sbietrcl.exe
3036	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1384	da4889c62855c58d6c05523169436f46cac74ad92b8e173c443bc8225cc8e7ff.exe
Token: SeDebugPrivilege	3036	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2788	sbietrcl.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1384 wrote to memory of 3036	1384	da4889c62855c58d6c05523169436f46cac74ad92b8e173c443bc8225cc8e7ff.exe	31
PID 1384 wrote to memory of 3036	1384	da4889c62855c58d6c05523169436f46cac74ad92b8e173c443bc8225cc8e7ff.exe	31
PID 1384 wrote to memory of 3036	1384	da4889c62855c58d6c05523169436f46cac74ad92b8e173c443bc8225cc8e7ff.exe	31
PID 1384 wrote to memory of 3036	1384	da4889c62855c58d6c05523169436f46cac74ad92b8e173c443bc8225cc8e7ff.exe	31
PID 3036 wrote to memory of 2788	3036	sbietrcl.exe	32
PID 3036 wrote to memory of 2788	3036	sbietrcl.exe	32
PID 3036 wrote to memory of 2788	3036	sbietrcl.exe	32
PID 3036 wrote to memory of 2788	3036	sbietrcl.exe	32
PID 3036 wrote to memory of 2788	3036	sbietrcl.exe	32
PID 3036 wrote to memory of 2788	3036	sbietrcl.exe	32
PID 3036 wrote to memory of 2788	3036	sbietrcl.exe	32
PID 3036 wrote to memory of 2788	3036	sbietrcl.exe	32
PID 3036 wrote to memory of 2788	3036	sbietrcl.exe	32
PID 3036 wrote to memory of 2788	3036	sbietrcl.exe	32

C:\Users\Admin\AppData\Local\Temp\da4889c62855c58d6c05523169436f46cac74ad92b8e173c443bc8225cc8e7ff.exe
"C:\Users\Admin\AppData\Local\Temp\da4889c62855c58d6c05523169436f46cac74ad92b8e173c443bc8225cc8e7ff.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:1384
- 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:3036
- - 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:2788

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\CabED0.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

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

Filesize
1.7MB

MD5
538fea400267aef727223b6dc353cd7b

SHA1
eac3fc4010011930b00373e3dc75fb2ef0a27c48

SHA256
012b581aa1128e3304bab35c1533046e43b03f5e7839a08356102b5d213414d1

SHA512
19da916b7ef31fe2244d88140ff0ca33cc2cd6a3feb82efc9c8f6dd7e1842d1f7ceb53526cdb7f63df1c0de874b4d2732688e0e79e4fb8caa2921f27d9c244c6

Download Submit
memory/1384-1-0x0000000074C60000-0x000000007520B000-memory.dmp

Filesize
5.7MB

Download
memory/1384-2-0x0000000074C60000-0x000000007520B000-memory.dmp

Filesize
5.7MB

Download
memory/1384-10-0x0000000074C60000-0x000000007520B000-memory.dmp

Filesize
5.7MB

Download
memory/1384-11-0x0000000074C60000-0x000000007520B000-memory.dmp

Filesize
5.7MB

Download
memory/1384-29-0x0000000074C60000-0x000000007520B000-memory.dmp

Filesize
5.7MB

Download
memory/1384-0-0x0000000074C61000-0x0000000074C62000-memory.dmp

Filesize
4KB

Download
memory/2788-46-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2788-48-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2788-67-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2788-64-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2788-58-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2788-42-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2788-54-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2788-52-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2788-50-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2788-61-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2788-62-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2788-44-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2788-57-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3036-63-0x0000000074C60000-0x000000007520B000-memory.dmp

Filesize
5.7MB

Download
memory/3036-37-0x0000000074C60000-0x000000007520B000-memory.dmp

Filesize
5.7MB

Download
memory/3036-38-0x0000000074C60000-0x000000007520B000-memory.dmp

Filesize
5.7MB

Download
memory/3036-41-0x0000000074C60000-0x000000007520B000-memory.dmp

Filesize
5.7MB

Download
memory/3036-40-0x0000000074C60000-0x000000007520B000-memory.dmp

Filesize
5.7MB

Download
memory/3036-39-0x0000000074C60000-0x000000007520B000-memory.dmp

Filesize
5.7MB

Download