remcos | ec57a5693533b024615c157ec0e3867b2eb73a65a12c20501ef8ff00ffd8f65c

Analysis

max time kernel
141s
max time network
154s
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, 06:13

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General

Target

7b5101c9122edf393eb01ae2e8376ff4c068ae90480c777e1d5e671b2d2b61dd.exe
Size

1.8MB
MD5

3a219547f510eb35578328582fee3d73
SHA1

346bbbcff1e8a30cdb4538f1215b1ac45efb4960
SHA256

7b5101c9122edf393eb01ae2e8376ff4c068ae90480c777e1d5e671b2d2b61dd
SHA512

029b085ac2318bd10058472bbe80f2080a672107a8c9819c1ffc17a63b3035e2821e123a95f4cc48d44ef9fdab7ce8a8e2f0c54bca378925b47481aeee02e8af
SSDEEP

24576:ND39dlfGQrFUspugRNJI2DJnUw9W/j+BeKJWqwH67:NF+QrFUBgq25eKu67

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-1-5-21-308834014-1004923324-1191300197-1000\Control Panel\International\Geo\Nation	7b5101c9122edf393eb01ae2e8376ff4c068ae90480c777e1d5e671b2d2b61dd.exe

Executes dropped EXE 2 IoCs

pid	Process
1188	sbietrcl.exe
1316	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-1-5-21-308834014-1004923324-1191300197-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	7b5101c9122edf393eb01ae2e8376ff4c068ae90480c777e1d5e671b2d2b61dd.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1188 set thread context of 1316	1188	sbietrcl.exe	94

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	7b5101c9122edf393eb01ae2e8376ff4c068ae90480c777e1d5e671b2d2b61dd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
2844	7b5101c9122edf393eb01ae2e8376ff4c068ae90480c777e1d5e671b2d2b61dd.exe
2844	7b5101c9122edf393eb01ae2e8376ff4c068ae90480c777e1d5e671b2d2b61dd.exe
2844	7b5101c9122edf393eb01ae2e8376ff4c068ae90480c777e1d5e671b2d2b61dd.exe
2844	7b5101c9122edf393eb01ae2e8376ff4c068ae90480c777e1d5e671b2d2b61dd.exe
2844	7b5101c9122edf393eb01ae2e8376ff4c068ae90480c777e1d5e671b2d2b61dd.exe
2844	7b5101c9122edf393eb01ae2e8376ff4c068ae90480c777e1d5e671b2d2b61dd.exe
1188	sbietrcl.exe
1188	sbietrcl.exe
1188	sbietrcl.exe
1188	sbietrcl.exe
1188	sbietrcl.exe
1188	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2844	7b5101c9122edf393eb01ae2e8376ff4c068ae90480c777e1d5e671b2d2b61dd.exe
Token: SeDebugPrivilege	1188	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1316	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2844 wrote to memory of 1188	2844	7b5101c9122edf393eb01ae2e8376ff4c068ae90480c777e1d5e671b2d2b61dd.exe	93
PID 2844 wrote to memory of 1188	2844	7b5101c9122edf393eb01ae2e8376ff4c068ae90480c777e1d5e671b2d2b61dd.exe	93
PID 2844 wrote to memory of 1188	2844	7b5101c9122edf393eb01ae2e8376ff4c068ae90480c777e1d5e671b2d2b61dd.exe	93
PID 1188 wrote to memory of 1316	1188	sbietrcl.exe	94
PID 1188 wrote to memory of 1316	1188	sbietrcl.exe	94
PID 1188 wrote to memory of 1316	1188	sbietrcl.exe	94
PID 1188 wrote to memory of 1316	1188	sbietrcl.exe	94
PID 1188 wrote to memory of 1316	1188	sbietrcl.exe	94
PID 1188 wrote to memory of 1316	1188	sbietrcl.exe	94
PID 1188 wrote to memory of 1316	1188	sbietrcl.exe	94
PID 1188 wrote to memory of 1316	1188	sbietrcl.exe	94
PID 1188 wrote to memory of 1316	1188	sbietrcl.exe	94

C:\Users\Admin\AppData\Local\Temp\7b5101c9122edf393eb01ae2e8376ff4c068ae90480c777e1d5e671b2d2b61dd.exe
"C:\Users\Admin\AppData\Local\Temp\7b5101c9122edf393eb01ae2e8376ff4c068ae90480c777e1d5e671b2d2b61dd.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:2844
- 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:1188
- - 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:1316

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
1.8MB

MD5
b68184e50cff46596f402718071b7103

SHA1
3a04e3c61d3b678249814cd626bc8aec9059549a

SHA256
c0293b6ea924521b3ff554cf0c0b31517645929aadbdf1014bf38fd36d89d6d0

SHA512
d5ab585ad6f425dd81f7358112a17a5ecaba5842bf5aee7eed3bb19e383db3a03fef0721db0f7f67981d7bc666615349069ad91d78a0317d286ce357debc5893

Download Submit
memory/1188-46-0x0000000075040000-0x00000000755F1000-memory.dmp

Filesize
5.7MB

Download
memory/1188-34-0x0000000075040000-0x00000000755F1000-memory.dmp

Filesize
5.7MB

Download
memory/1188-33-0x0000000075040000-0x00000000755F1000-memory.dmp

Filesize
5.7MB

Download
memory/1188-32-0x0000000075040000-0x00000000755F1000-memory.dmp

Filesize
5.7MB

Download
memory/1188-31-0x0000000075040000-0x00000000755F1000-memory.dmp

Filesize
5.7MB

Download
memory/1316-42-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1316-39-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1316-49-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1316-44-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1316-43-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1316-38-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1316-35-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2844-2-0x0000000075040000-0x00000000755F1000-memory.dmp

Filesize
5.7MB

Download
memory/2844-5-0x0000000075040000-0x00000000755F1000-memory.dmp

Filesize
5.7MB

Download
memory/2844-0-0x0000000075042000-0x0000000075043000-memory.dmp

Filesize
4KB

Download
memory/2844-19-0x0000000075040000-0x00000000755F1000-memory.dmp

Filesize
5.7MB

Download
memory/2844-6-0x0000000075040000-0x00000000755F1000-memory.dmp

Filesize
5.7MB

Download
memory/2844-18-0x0000000075042000-0x0000000075043000-memory.dmp

Filesize
4KB

Download
memory/2844-1-0x0000000075040000-0x00000000755F1000-memory.dmp

Filesize
5.7MB

Download
memory/2844-30-0x0000000075040000-0x00000000755F1000-memory.dmp

Filesize
5.7MB

Download