remcos | d1c0a9525bf259465de304408570586693062d18f7d59ec854dbc8158acb700b

General

Target

d1c0a9525bf259465de304408570586693062d18f7d59ec854dbc8158acb700b.exe
Size

903KB
MD5

2649d9e9fcbb3e96aa04e73939597ebe
SHA1

7a502353814d8323752779626cdd42651c2cfc57
SHA256

d1c0a9525bf259465de304408570586693062d18f7d59ec854dbc8158acb700b
SHA512

11ba1a27ab7e7a6ec5638b62761d4e742f2b6c4377792952ea764dc18dc6232e8f5ba8e5bb6c9ca07deeb7eb5053a67cb4a34cee1e128c651a30f6753f2bcb4d
SSDEEP

12288:tp+rgRNyA55IxJ+feDOa9rZj5XqkJD0QrOod7XxlW91RRz9Mt:tpugRNJI1D39dlfGQrFUx9Mt

Score

10^/10

remcos host discovery persistence rat spyware stealer

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

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-1-5-21-805952410-2104024357-1716932545-1000\Control Panel\International\Geo\Nation	d1c0a9525bf259465de304408570586693062d18f7d59ec854dbc8158acb700b.exe

Executes dropped EXE 2 IoCs

pid	Process
3284	sbietrcl.exe
4320	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-1-5-21-805952410-2104024357-1716932545-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	d1c0a9525bf259465de304408570586693062d18f7d59ec854dbc8158acb700b.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3284 set thread context of 4320	3284	sbietrcl.exe	96

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	d1c0a9525bf259465de304408570586693062d18f7d59ec854dbc8158acb700b.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
1544	d1c0a9525bf259465de304408570586693062d18f7d59ec854dbc8158acb700b.exe
1544	d1c0a9525bf259465de304408570586693062d18f7d59ec854dbc8158acb700b.exe
1544	d1c0a9525bf259465de304408570586693062d18f7d59ec854dbc8158acb700b.exe
1544	d1c0a9525bf259465de304408570586693062d18f7d59ec854dbc8158acb700b.exe
1544	d1c0a9525bf259465de304408570586693062d18f7d59ec854dbc8158acb700b.exe
1544	d1c0a9525bf259465de304408570586693062d18f7d59ec854dbc8158acb700b.exe
3284	sbietrcl.exe
3284	sbietrcl.exe
3284	sbietrcl.exe
3284	sbietrcl.exe
3284	sbietrcl.exe
3284	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1544	d1c0a9525bf259465de304408570586693062d18f7d59ec854dbc8158acb700b.exe
Token: SeDebugPrivilege	3284	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4320	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1544 wrote to memory of 3284	1544	d1c0a9525bf259465de304408570586693062d18f7d59ec854dbc8158acb700b.exe	94
PID 1544 wrote to memory of 3284	1544	d1c0a9525bf259465de304408570586693062d18f7d59ec854dbc8158acb700b.exe	94
PID 1544 wrote to memory of 3284	1544	d1c0a9525bf259465de304408570586693062d18f7d59ec854dbc8158acb700b.exe	94
PID 3284 wrote to memory of 4320	3284	sbietrcl.exe	96
PID 3284 wrote to memory of 4320	3284	sbietrcl.exe	96
PID 3284 wrote to memory of 4320	3284	sbietrcl.exe	96
PID 3284 wrote to memory of 4320	3284	sbietrcl.exe	96
PID 3284 wrote to memory of 4320	3284	sbietrcl.exe	96
PID 3284 wrote to memory of 4320	3284	sbietrcl.exe	96
PID 3284 wrote to memory of 4320	3284	sbietrcl.exe	96
PID 3284 wrote to memory of 4320	3284	sbietrcl.exe	96
PID 3284 wrote to memory of 4320	3284	sbietrcl.exe	96

C:\Users\Admin\AppData\Local\Temp\d1c0a9525bf259465de304408570586693062d18f7d59ec854dbc8158acb700b.exe
"C:\Users\Admin\AppData\Local\Temp\d1c0a9525bf259465de304408570586693062d18f7d59ec854dbc8158acb700b.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:1544
- 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:3284
- - 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:4320

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
912KB

MD5
14e63e32b42d9fb8e45134d601d6bf45

SHA1
c26ab96db14546d7ebe133aaf77a2901a5405371

SHA256
31e3c87d639184bb8439c05be5a4b08c812e49f309a5748bbd450e183c54c743

SHA512
25a8b143d806a531e0c63886c56acbdc3a119bc6e446c4f0f55bc102a6bd1e69229f6ac1e71d13a79e395d4728ce704359f486e0e1846eb6f29ddda04003b011

Download Submit
memory/1544-28-0x00000000752B0000-0x0000000075861000-memory.dmp

Filesize
5.7MB

Download
memory/1544-1-0x00000000752B0000-0x0000000075861000-memory.dmp

Filesize
5.7MB

Download
memory/1544-2-0x00000000752B0000-0x0000000075861000-memory.dmp

Filesize
5.7MB

Download
memory/1544-3-0x00000000752B0000-0x0000000075861000-memory.dmp

Filesize
5.7MB

Download
memory/1544-4-0x00000000752B0000-0x0000000075861000-memory.dmp

Filesize
5.7MB

Download
memory/1544-16-0x00000000752B2000-0x00000000752B3000-memory.dmp

Filesize
4KB

Download
memory/1544-17-0x00000000752B0000-0x0000000075861000-memory.dmp

Filesize
5.7MB

Download
memory/1544-0-0x00000000752B2000-0x00000000752B3000-memory.dmp

Filesize
4KB

Download
memory/3284-30-0x00000000752B0000-0x0000000075861000-memory.dmp

Filesize
5.7MB

Download
memory/3284-29-0x00000000752B0000-0x0000000075861000-memory.dmp

Filesize
5.7MB

Download
memory/3284-31-0x00000000752B0000-0x0000000075861000-memory.dmp

Filesize
5.7MB

Download
memory/3284-32-0x00000000752B0000-0x0000000075861000-memory.dmp

Filesize
5.7MB

Download
memory/3284-44-0x00000000752B0000-0x0000000075861000-memory.dmp

Filesize
5.7MB

Download
memory/4320-33-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4320-36-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4320-40-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4320-37-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4320-41-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4320-42-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4320-47-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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