remcos | f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b

General

Target

f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe
Size

1.5MB
MD5

81f2fda10383d4d478467ec1f0a9f905
SHA1

90c4fe7eb949c44607d29680b6b8a47bf294e02e
SHA256

f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b
SHA512

f9b1da09d95d50eb1f2fbe3503b9dd872df35e8b1c3c00e3d0c46df337c954568f480b808af55fc29dc81986ad1c357a6f431da0b6de9e4aaeaa3d455c82fee4
SSDEEP

24576:RymE/1+ebBaBurI2zCqFa0IkEAFByhgxW:idbiuVJE0w

Score

10^/10

remcos veintiocho persistence rat

Malware Config

Extracted

Family

remcos

Version

2.5.0 Pro

Botnet

VEINTIOCHO

C2

veintisieteremc.duckdns.org:1011

veintiochoremc.duckdns.org:1011

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-98T9IZ
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

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

Processes:

f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe,\"C:\\Users\\Admin\\AppData\\Local\\Temp\\f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe\""	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe

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

Suspicious use of SetThreadContext 1 IoCs

Processes:

f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe

description	pid	process	target process
PID 1848 set thread context of 1984	1848	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe

pid process

1984 f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe

pid	process
1984	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe

description	pid	process	target process
PID 1848 wrote to memory of 1984	1848	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe
PID 1848 wrote to memory of 1984	1848	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe
PID 1848 wrote to memory of 1984	1848	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe
PID 1848 wrote to memory of 1984	1848	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe
PID 1848 wrote to memory of 1984	1848	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe
PID 1848 wrote to memory of 1984	1848	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe
PID 1848 wrote to memory of 1984	1848	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe
PID 1848 wrote to memory of 1984	1848	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe
PID 1848 wrote to memory of 1984	1848	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe
PID 1848 wrote to memory of 1984	1848	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe
PID 1848 wrote to memory of 1984	1848	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe

C:\Users\Admin\AppData\Local\Temp\f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe
"C:\Users\Admin\AppData\Local\Temp\f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe"
1⤵
- Modifies WinLogon for persistence
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1848

C:\Users\Admin\AppData\Local\Temp\f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe
"C:\Users\Admin\AppData\Local\Temp\f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe"
2⤵
- Suspicious use of SetWindowsHookEx
PID:1984

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\remcos\logs.dat
Filesize
74B

MD5
241b5f88af66fd809bff6b3bdd2eb825

SHA1
582f58cb62c8d9716b58a676dd5677c984f94727

SHA256
682e3f10247adc53b8b2267b15fe38370f9ad8d1aefa6b9affbd5fce7bf76f28

SHA512
34640eea4bd99365183ad89c2281254a0e6b56ce505bb9d7ca6a2f8335ad4a02043185d38edee5b0d18d090223f06f1d13ac9657fde2b373e19d818c6f790ca3

Download Submit
memory/1848-0-0x0000000000BD0000-0x0000000000D4A000-memory.dmp

Filesize
1.5MB

Download
memory/1848-1-0x0000000074230000-0x000000007491E000-memory.dmp

Filesize
6.9MB

Download
memory/1848-2-0x0000000000230000-0x000000000025C000-memory.dmp

Filesize
176KB

Download
memory/1848-3-0x0000000004CF0000-0x0000000004D30000-memory.dmp

Filesize
256KB

Download
memory/1848-4-0x0000000000270000-0x0000000000296000-memory.dmp

Filesize
152KB

Download
memory/1848-15-0x0000000074230000-0x000000007491E000-memory.dmp

Filesize
6.9MB

Download
memory/1984-10-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1984-16-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1984-9-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1984-7-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1984-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1984-13-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1984-6-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1984-8-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1984-17-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1984-21-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1984-20-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1984-19-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1984-24-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1984-5-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

Loading Replay Monitor...

Downloads