remcos | 87e1bcc31d4b6a673207b37b094b4c6f4a0a4a8588d19f706fe0f03b6154318e

General

Target

3677fed428584fc3d50c173b08322f6bda93e962d60e9ec5a0af360214ce12dd.exe
Size

792KB
MD5

4ce5a53d8c401c45a78bfdb3cd4e110a
SHA1

1b9299cf708e8fbe9cf037581595d1e0d84140fe
SHA256

3677fed428584fc3d50c173b08322f6bda93e962d60e9ec5a0af360214ce12dd
SHA512

e7abff84d6a5d4797f3a62e3dcf63d40d742c4761a6a39804f22f455e8fe8647392238b37041bea824ba310f4cc6c0f0d2ba65a18545659c3b61a877f834b89e
SSDEEP

12288:+iHKAUxid0pt2Gloj8MrVE6YASEldYbRugxEHqZ7bsPaL/bOpYtYRpc7AODkZzK+:+iH7UxOg9aj1rYD

Score

10^/10

remcos torrecuatro discovery rat

Malware Config

Extracted

Family

remcos

Version

2.5.0 Pro

Botnet

TORRECUATRO

C2

torrecuatroremser.duckdns.org:1013

Attributes

audio_folder
MicRecords
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
Remcos-C9IGV5
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
remcos
take_screenshot_option
false
take_screenshot_time
5
take_screenshot_title
wikipedia;solitaire;

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Remcos family
remcos

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1728 set thread context of 2916	1728	3677fed428584fc3d50c173b08322f6bda93e962d60e9ec5a0af360214ce12dd.exe	33

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	3677fed428584fc3d50c173b08322f6bda93e962d60e9ec5a0af360214ce12dd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2744	schtasks.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2916	RegSvcs.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1728 wrote to memory of 2744	1728	3677fed428584fc3d50c173b08322f6bda93e962d60e9ec5a0af360214ce12dd.exe	31
PID 1728 wrote to memory of 2744	1728	3677fed428584fc3d50c173b08322f6bda93e962d60e9ec5a0af360214ce12dd.exe	31
PID 1728 wrote to memory of 2744	1728	3677fed428584fc3d50c173b08322f6bda93e962d60e9ec5a0af360214ce12dd.exe	31
PID 1728 wrote to memory of 2744	1728	3677fed428584fc3d50c173b08322f6bda93e962d60e9ec5a0af360214ce12dd.exe	31
PID 1728 wrote to memory of 2916	1728	3677fed428584fc3d50c173b08322f6bda93e962d60e9ec5a0af360214ce12dd.exe	33
PID 1728 wrote to memory of 2916	1728	3677fed428584fc3d50c173b08322f6bda93e962d60e9ec5a0af360214ce12dd.exe	33
PID 1728 wrote to memory of 2916	1728	3677fed428584fc3d50c173b08322f6bda93e962d60e9ec5a0af360214ce12dd.exe	33
PID 1728 wrote to memory of 2916	1728	3677fed428584fc3d50c173b08322f6bda93e962d60e9ec5a0af360214ce12dd.exe	33
PID 1728 wrote to memory of 2916	1728	3677fed428584fc3d50c173b08322f6bda93e962d60e9ec5a0af360214ce12dd.exe	33
PID 1728 wrote to memory of 2916	1728	3677fed428584fc3d50c173b08322f6bda93e962d60e9ec5a0af360214ce12dd.exe	33
PID 1728 wrote to memory of 2916	1728	3677fed428584fc3d50c173b08322f6bda93e962d60e9ec5a0af360214ce12dd.exe	33
PID 1728 wrote to memory of 2916	1728	3677fed428584fc3d50c173b08322f6bda93e962d60e9ec5a0af360214ce12dd.exe	33
PID 1728 wrote to memory of 2916	1728	3677fed428584fc3d50c173b08322f6bda93e962d60e9ec5a0af360214ce12dd.exe	33
PID 1728 wrote to memory of 2916	1728	3677fed428584fc3d50c173b08322f6bda93e962d60e9ec5a0af360214ce12dd.exe	33
PID 1728 wrote to memory of 2916	1728	3677fed428584fc3d50c173b08322f6bda93e962d60e9ec5a0af360214ce12dd.exe	33
PID 1728 wrote to memory of 2916	1728	3677fed428584fc3d50c173b08322f6bda93e962d60e9ec5a0af360214ce12dd.exe	33
PID 1728 wrote to memory of 2916	1728	3677fed428584fc3d50c173b08322f6bda93e962d60e9ec5a0af360214ce12dd.exe	33
PID 1728 wrote to memory of 2916	1728	3677fed428584fc3d50c173b08322f6bda93e962d60e9ec5a0af360214ce12dd.exe	33

C:\Users\Admin\AppData\Local\Temp\3677fed428584fc3d50c173b08322f6bda93e962d60e9ec5a0af360214ce12dd.exe
"C:\Users\Admin\AppData\Local\Temp\3677fed428584fc3d50c173b08322f6bda93e962d60e9ec5a0af360214ce12dd.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1728
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\UjkynJXA" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1E98.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2744
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "{path}"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2916

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp1E98.tmp

Filesize
1KB

MD5
c215556c5229b867423f8eeeb9d3d3bf

SHA1
688f0b8718752693ec6998dccde8d0c8768b991d

SHA256
b9abeacc8ccd89a1bf9abba40f655b7bd8732f488d77b908ccf935843c2d676d

SHA512
66d84943d05608f346cd82cfb693c587cdd589becc8a9b0f095d148113bbc35f6612679ea82024facd400db8c03ffc0fc215cf71f80fb7996c9d34b7cc9dc1ba

Download Submit
C:\Users\Admin\AppData\Roaming\remcos\logs.dat

Filesize
74B

MD5
5fd62040e140eebfabcf5484391f38ea

SHA1
a75f5ef40cc9afee2c51841afe54ccf40e78d91a

SHA256
7e93853ab23b4c60d47bdba39cd155a4ffe7e7c4d22d559f7c11c3b1acfbc63d

SHA512
6e230b57d264e27b16c40551afb69edad460947433a585d2ffcd65250790eb08470dc46cb075641404fbdb148cd341e1245e31b346b63862eaef10d24fd243cc

Download Submit
memory/1728-27-0x0000000074660000-0x0000000074D4E000-memory.dmp

Filesize
6.9MB

Download
memory/1728-1-0x0000000000BE0000-0x0000000000CAC000-memory.dmp

Filesize
816KB

Download
memory/1728-2-0x0000000074660000-0x0000000074D4E000-memory.dmp

Filesize
6.9MB

Download
memory/1728-3-0x0000000000230000-0x0000000000244000-memory.dmp

Filesize
80KB

Download
memory/1728-4-0x000000007466E000-0x000000007466F000-memory.dmp

Filesize
4KB

Download
memory/1728-5-0x0000000074660000-0x0000000074D4E000-memory.dmp

Filesize
6.9MB

Download
memory/1728-6-0x00000000021B0000-0x0000000002224000-memory.dmp

Filesize
464KB

Download
memory/1728-7-0x0000000000B20000-0x0000000000B46000-memory.dmp

Filesize
152KB

Download
memory/1728-0-0x000000007466E000-0x000000007466F000-memory.dmp

Filesize
4KB

Download
memory/2916-24-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2916-21-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2916-19-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2916-15-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2916-14-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2916-13-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2916-12-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2916-11-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2916-28-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2916-23-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2916-17-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads