remcos | 68e0a761d3751db051d39824a011f467b2a9549ed2a50d4c090131536f4f192c

Reason

Machine shutdown

General

Target

17387440834b4821664cf0a393c86acb15db36fc5d3d3a9e7ad3bb0825e85475848be043b9824.dat-decoded.exe
Size

482KB
MD5

b30ad15111626241385bf2bef8056c7b
SHA1

450fd8d645f984a3caa0bc0dbc346f2b9ae8b01a
SHA256

68e0a761d3751db051d39824a011f467b2a9549ed2a50d4c090131536f4f192c
SHA512

e461ff9e650eb6e50e5ee81a145af997307d15577225a41b92e7f4af77011352c2a152ee48adb48218d1e7510eca8829a76890ec34552832a9ecbe18333bfeea
SSDEEP

12288:x13ak/mBXTG4/1v08KI7ZnMEF76JqmsvZQ0S:jak/mBXTV/R0nEF76gFZP

Score

10^/10

remcos zyn4 collection discovery ransomware rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

zyn4

C2

newtimeforrmsupdates.duckdns.org:14645

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
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
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-RJBJ69
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
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

Detected Nirsoft tools 8 IoCs

Free utilities often used by attackers which can steal passwords, product keys, etc.

resource	yara_rule
behavioral2/memory/2992-13-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/2992-22-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4956-19-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/4956-18-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/2992-14-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/5108-9-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/4956-23-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/5108-26-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/4956-19-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/4956-18-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/4956-23-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 2 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/5108-9-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/5108-26-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

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

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4003209913-3868522715-854928974-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	17387440834b4821664cf0a393c86acb15db36fc5d3d3a9e7ad3bb0825e85475848be043b9824.dat-decoded.exe

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4003209913-3868522715-854928974-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\finger.jpg"	17387440834b4821664cf0a393c86acb15db36fc5d3d3a9e7ad3bb0825e85475848be043b9824.dat-decoded.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4040 set thread context of 5108	4040	17387440834b4821664cf0a393c86acb15db36fc5d3d3a9e7ad3bb0825e85475848be043b9824.dat-decoded.exe	88
PID 4040 set thread context of 4956	4040	17387440834b4821664cf0a393c86acb15db36fc5d3d3a9e7ad3bb0825e85475848be043b9824.dat-decoded.exe	89
PID 4040 set thread context of 2992	4040	17387440834b4821664cf0a393c86acb15db36fc5d3d3a9e7ad3bb0825e85475848be043b9824.dat-decoded.exe	90

System Location Discovery: System Language Discovery 1 TTPs 4 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	17387440834b4821664cf0a393c86acb15db36fc5d3d3a9e7ad3bb0825e85475848be043b9824.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17387440834b4821664cf0a393c86acb15db36fc5d3d3a9e7ad3bb0825e85475848be043b9824.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17387440834b4821664cf0a393c86acb15db36fc5d3d3a9e7ad3bb0825e85475848be043b9824.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17387440834b4821664cf0a393c86acb15db36fc5d3d3a9e7ad3bb0825e85475848be043b9824.dat-decoded.exe

Modifies Control Panel 3 IoCs

defense_evasion

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4003209913-3868522715-854928974-1000\Control Panel\Desktop	17387440834b4821664cf0a393c86acb15db36fc5d3d3a9e7ad3bb0825e85475848be043b9824.dat-decoded.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4003209913-3868522715-854928974-1000\Control Panel\Desktop\WallpaperStyle = "0"	17387440834b4821664cf0a393c86acb15db36fc5d3d3a9e7ad3bb0825e85475848be043b9824.dat-decoded.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4003209913-3868522715-854928974-1000\Control Panel\Desktop\TileWallpaper = "0"	17387440834b4821664cf0a393c86acb15db36fc5d3d3a9e7ad3bb0825e85475848be043b9824.dat-decoded.exe

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10"	LogonUI.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = a6d8ff0076b9ed00429ce3000078d700005a9e000042750000264200f7630c00	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "156"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4288567808"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292311040"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365271"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365271"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1"	LogonUI.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
5108	17387440834b4821664cf0a393c86acb15db36fc5d3d3a9e7ad3bb0825e85475848be043b9824.dat-decoded.exe
5108	17387440834b4821664cf0a393c86acb15db36fc5d3d3a9e7ad3bb0825e85475848be043b9824.dat-decoded.exe
2992	17387440834b4821664cf0a393c86acb15db36fc5d3d3a9e7ad3bb0825e85475848be043b9824.dat-decoded.exe
2992	17387440834b4821664cf0a393c86acb15db36fc5d3d3a9e7ad3bb0825e85475848be043b9824.dat-decoded.exe
5108	17387440834b4821664cf0a393c86acb15db36fc5d3d3a9e7ad3bb0825e85475848be043b9824.dat-decoded.exe
5108	17387440834b4821664cf0a393c86acb15db36fc5d3d3a9e7ad3bb0825e85475848be043b9824.dat-decoded.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
4040	17387440834b4821664cf0a393c86acb15db36fc5d3d3a9e7ad3bb0825e85475848be043b9824.dat-decoded.exe
4040	17387440834b4821664cf0a393c86acb15db36fc5d3d3a9e7ad3bb0825e85475848be043b9824.dat-decoded.exe
4040	17387440834b4821664cf0a393c86acb15db36fc5d3d3a9e7ad3bb0825e85475848be043b9824.dat-decoded.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2992	17387440834b4821664cf0a393c86acb15db36fc5d3d3a9e7ad3bb0825e85475848be043b9824.dat-decoded.exe
Token: SeShutdownPrivilege	4040	17387440834b4821664cf0a393c86acb15db36fc5d3d3a9e7ad3bb0825e85475848be043b9824.dat-decoded.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1488	LogonUI.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4040 wrote to memory of 5108	4040	17387440834b4821664cf0a393c86acb15db36fc5d3d3a9e7ad3bb0825e85475848be043b9824.dat-decoded.exe	88
PID 4040 wrote to memory of 5108	4040	17387440834b4821664cf0a393c86acb15db36fc5d3d3a9e7ad3bb0825e85475848be043b9824.dat-decoded.exe	88
PID 4040 wrote to memory of 5108	4040	17387440834b4821664cf0a393c86acb15db36fc5d3d3a9e7ad3bb0825e85475848be043b9824.dat-decoded.exe	88
PID 4040 wrote to memory of 4956	4040	17387440834b4821664cf0a393c86acb15db36fc5d3d3a9e7ad3bb0825e85475848be043b9824.dat-decoded.exe	89
PID 4040 wrote to memory of 4956	4040	17387440834b4821664cf0a393c86acb15db36fc5d3d3a9e7ad3bb0825e85475848be043b9824.dat-decoded.exe	89
PID 4040 wrote to memory of 4956	4040	17387440834b4821664cf0a393c86acb15db36fc5d3d3a9e7ad3bb0825e85475848be043b9824.dat-decoded.exe	89
PID 4040 wrote to memory of 2992	4040	17387440834b4821664cf0a393c86acb15db36fc5d3d3a9e7ad3bb0825e85475848be043b9824.dat-decoded.exe	90
PID 4040 wrote to memory of 2992	4040	17387440834b4821664cf0a393c86acb15db36fc5d3d3a9e7ad3bb0825e85475848be043b9824.dat-decoded.exe	90
PID 4040 wrote to memory of 2992	4040	17387440834b4821664cf0a393c86acb15db36fc5d3d3a9e7ad3bb0825e85475848be043b9824.dat-decoded.exe	90

C:\Users\Admin\AppData\Local\Temp\17387440834b4821664cf0a393c86acb15db36fc5d3d3a9e7ad3bb0825e85475848be043b9824.dat-decoded.exe
"C:\Users\Admin\AppData\Local\Temp\17387440834b4821664cf0a393c86acb15db36fc5d3d3a9e7ad3bb0825e85475848be043b9824.dat-decoded.exe"
1⤵
- Sets desktop wallpaper using registry
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Modifies Control Panel
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4040
- C:\Users\Admin\AppData\Local\Temp\17387440834b4821664cf0a393c86acb15db36fc5d3d3a9e7ad3bb0825e85475848be043b9824.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\17387440834b4821664cf0a393c86acb15db36fc5d3d3a9e7ad3bb0825e85475848be043b9824.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\ydkdboey"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:5108
- C:\Users\Admin\AppData\Local\Temp\17387440834b4821664cf0a393c86acb15db36fc5d3d3a9e7ad3bb0825e85475848be043b9824.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\17387440834b4821664cf0a393c86acb15db36fc5d3d3a9e7ad3bb0825e85475848be043b9824.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\iyqwchpzxro"
  2⤵
  - Accesses Microsoft Outlook accounts
  - System Location Discovery: System Language Discovery
  PID:4956
- C:\Users\Admin\AppData\Local\Temp\17387440834b4821664cf0a393c86acb15db36fc5d3d3a9e7ad3bb0825e85475848be043b9824.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\17387440834b4821664cf0a393c86acb15db36fc5d3d3a9e7ad3bb0825e85475848be043b9824.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\kavgdzztlzgolq"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2992

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x4 /state0:0xa3972055 /state1:0x41c64e6d
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:1488

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Defacement

1

T1491

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\ydkdboey

Filesize
4KB

MD5
f59f92591b8d57a95f1a5beb23a658d7

SHA1
6d26907d3d1ad1799f6bda6ba2c7db51f0e8d56d

SHA256
2a662290f17ef4bd2b908aea8ebcabeef63117955b5be1769425bdefdbad1b22

SHA512
b619288957ad69898e325207462e20cfa7bbf9b116ec5237da6fe47fef5450b1e9e040f1c60941b00bad9e9cb31f775c843f4d180f575643d6894f51548aa13b

Download Submit
memory/2992-10-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2992-13-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2992-12-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2992-22-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2992-14-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4040-37-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4040-36-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4040-35-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4040-39-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4040-32-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4040-33-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4040-34-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4040-29-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4956-19-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4956-23-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4956-3-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4956-18-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4956-7-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/5108-26-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/5108-6-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/5108-9-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/5108-1-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/5108-8-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download

Analysis

Sharing

Errors