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-1-5-21-983155329-280873152-1838004294-1000\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 3984 set thread context of 3968	3984	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe

pid process

3968 f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe

pid	process
3968	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe

description	pid	process	target process
PID 3984 wrote to memory of 3968	3984	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe
PID 3984 wrote to memory of 3968	3984	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe
PID 3984 wrote to memory of 3968	3984	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe
PID 3984 wrote to memory of 3968	3984	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe
PID 3984 wrote to memory of 3968	3984	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe
PID 3984 wrote to memory of 3968	3984	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe
PID 3984 wrote to memory of 3968	3984	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe
PID 3984 wrote to memory of 3968	3984	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe
PID 3984 wrote to memory of 3968	3984	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe	f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe
PID 3984 wrote to memory of 3968	3984	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:3984

C:\Users\Admin\AppData\Local\Temp\f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe
"C:\Users\Admin\AppData\Local\Temp\f6f0b9b8b7a2ee0a64f33c5df868a2ae646d9c5ca161b7031994db881ec2b11b.exe"
2⤵
- Suspicious use of SetWindowsHookEx
PID:3968

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

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Downloads

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

MD5
9b73606660fcd7d493c5eda092ca8cab

SHA1
b6cefbdab7964eab88bcc0974b897772fc8c99c2

SHA256
f03e6f6295c8653ade43e06fa3b1af83effdcc7607feb35032af955b3a334434

SHA512
b81c54077a52c438aedf82a52a85dc8e808d2713028c93f8721134ea4aaa03fbbab3a192090d111ee1acc8a1f9bd467ba13f5f0c9d663ddebf47dda0ef2b290a

Download Submit
memory/3968-7-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3968-18-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3968-14-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3968-15-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3968-12-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3968-10-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3984-3-0x0000000004AC0000-0x0000000004AEC000-memory.dmp

Filesize
176KB

Download
memory/3984-11-0x00000000753D0000-0x0000000075B80000-memory.dmp

Filesize
7.7MB

Download
memory/3984-6-0x0000000004BA0000-0x0000000004BC6000-memory.dmp

Filesize
152KB

Download
memory/3984-5-0x00000000051F0000-0x0000000005794000-memory.dmp

Filesize
5.6MB

Download
memory/3984-4-0x0000000004C30000-0x0000000004C40000-memory.dmp

Filesize
64KB

Download
memory/3984-0-0x00000000001F0000-0x000000000036A000-memory.dmp

Filesize
1.5MB

Download
memory/3984-2-0x0000000007DC0000-0x0000000007E5C000-memory.dmp

Filesize
624KB

Download
memory/3984-1-0x00000000753D0000-0x0000000075B80000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads