remcos | d950eb5505a609d0fc10edeb2db67120b35a6b9e977c343265d6b64e1c8e5afc

General

Target

d950eb5505a609d0fc10edeb2db67120b35a6b9e977c343265d6b64e1c8e5afcN.exe
Size

2.3MB
MD5

e2caad70b5d038f04b8616f8054cab50
SHA1

cd899cd6abfbfacdcf7dd564f24fd684976345ba
SHA256

d950eb5505a609d0fc10edeb2db67120b35a6b9e977c343265d6b64e1c8e5afc
SHA512

1fbfd629880dfd0709a83dc02fc72d7505acc9fa8c75cedd01eba53130bc220f93d3badf1d99f45948d9ad0a80c6aa851d3f43c7e9879411792cb48d10c03088
SSDEEP

24576:UD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjYF4avnXJJJz5/2:Up7E+QrFUBgq2Sn7/2

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

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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	d950eb5505a609d0fc10edeb2db67120b35a6b9e977c343265d6b64e1c8e5afcN.exe

Executes dropped EXE 2 IoCs

pid	Process
4704	sbietrcl.exe
3352	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-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	d950eb5505a609d0fc10edeb2db67120b35a6b9e977c343265d6b64e1c8e5afcN.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4704 set thread context of 3352	4704	sbietrcl.exe	87

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	d950eb5505a609d0fc10edeb2db67120b35a6b9e977c343265d6b64e1c8e5afcN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
3356	d950eb5505a609d0fc10edeb2db67120b35a6b9e977c343265d6b64e1c8e5afcN.exe
3356	d950eb5505a609d0fc10edeb2db67120b35a6b9e977c343265d6b64e1c8e5afcN.exe
3356	d950eb5505a609d0fc10edeb2db67120b35a6b9e977c343265d6b64e1c8e5afcN.exe
3356	d950eb5505a609d0fc10edeb2db67120b35a6b9e977c343265d6b64e1c8e5afcN.exe
3356	d950eb5505a609d0fc10edeb2db67120b35a6b9e977c343265d6b64e1c8e5afcN.exe
3356	d950eb5505a609d0fc10edeb2db67120b35a6b9e977c343265d6b64e1c8e5afcN.exe
4704	sbietrcl.exe
4704	sbietrcl.exe
4704	sbietrcl.exe
4704	sbietrcl.exe
4704	sbietrcl.exe
4704	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3356	d950eb5505a609d0fc10edeb2db67120b35a6b9e977c343265d6b64e1c8e5afcN.exe
Token: SeDebugPrivilege	4704	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3352	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3356 wrote to memory of 4704	3356	d950eb5505a609d0fc10edeb2db67120b35a6b9e977c343265d6b64e1c8e5afcN.exe	86
PID 3356 wrote to memory of 4704	3356	d950eb5505a609d0fc10edeb2db67120b35a6b9e977c343265d6b64e1c8e5afcN.exe	86
PID 3356 wrote to memory of 4704	3356	d950eb5505a609d0fc10edeb2db67120b35a6b9e977c343265d6b64e1c8e5afcN.exe	86
PID 4704 wrote to memory of 3352	4704	sbietrcl.exe	87
PID 4704 wrote to memory of 3352	4704	sbietrcl.exe	87
PID 4704 wrote to memory of 3352	4704	sbietrcl.exe	87
PID 4704 wrote to memory of 3352	4704	sbietrcl.exe	87
PID 4704 wrote to memory of 3352	4704	sbietrcl.exe	87
PID 4704 wrote to memory of 3352	4704	sbietrcl.exe	87
PID 4704 wrote to memory of 3352	4704	sbietrcl.exe	87
PID 4704 wrote to memory of 3352	4704	sbietrcl.exe	87
PID 4704 wrote to memory of 3352	4704	sbietrcl.exe	87

C:\Users\Admin\AppData\Local\Temp\d950eb5505a609d0fc10edeb2db67120b35a6b9e977c343265d6b64e1c8e5afcN.exe
"C:\Users\Admin\AppData\Local\Temp\d950eb5505a609d0fc10edeb2db67120b35a6b9e977c343265d6b64e1c8e5afcN.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:3356
- 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:4704
- - 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:3352

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
2.3MB

MD5
cf0e8f0c90d978f235783e7879982dcd

SHA1
64886678440bfbf6e787e556bae4537ff62f16d2

SHA256
579ab93792feb7d53d6a7c74f7b913c95632ea2bda5aecee496d5604846fe36e

SHA512
7e1529fa7a2b775310bb452f3f173296280b26d63e5de955d72e206d67dff06923075d9772da7194fd601843e66663df07948de6f3e21bd88e518f93605921ad

Download Submit
memory/3352-35-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3352-49-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3352-40-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3352-44-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3352-45-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3352-43-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3352-38-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3356-18-0x0000000074830000-0x0000000074DE1000-memory.dmp

Filesize
5.7MB

Download
memory/3356-30-0x0000000074830000-0x0000000074DE1000-memory.dmp

Filesize
5.7MB

Download
memory/3356-19-0x0000000074832000-0x0000000074833000-memory.dmp

Filesize
4KB

Download
memory/3356-0-0x0000000074832000-0x0000000074833000-memory.dmp

Filesize
4KB

Download
memory/3356-6-0x0000000074830000-0x0000000074DE1000-memory.dmp

Filesize
5.7MB

Download
memory/3356-5-0x0000000074830000-0x0000000074DE1000-memory.dmp

Filesize
5.7MB

Download
memory/3356-2-0x0000000074830000-0x0000000074DE1000-memory.dmp

Filesize
5.7MB

Download
memory/3356-1-0x0000000074830000-0x0000000074DE1000-memory.dmp

Filesize
5.7MB

Download
memory/4704-32-0x0000000074830000-0x0000000074DE1000-memory.dmp

Filesize
5.7MB

Download
memory/4704-31-0x0000000074830000-0x0000000074DE1000-memory.dmp

Filesize
5.7MB

Download
memory/4704-33-0x0000000074830000-0x0000000074DE1000-memory.dmp

Filesize
5.7MB

Download
memory/4704-34-0x0000000074830000-0x0000000074DE1000-memory.dmp

Filesize
5.7MB

Download
memory/4704-46-0x0000000074830000-0x0000000074DE1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads