remcos | 4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531

General

Target

QuoteQu11262024.scr.exe
Size

820KB
MD5

a75036f188683604d03dd8f03fee6ec3
SHA1

cc2c07398c85ffcd033223d01155851647d0ee68
SHA256

4c1df01c44c5a69f9efa30528117c3d90f2df8a78c23a7ccc25412da15793531
SHA512

2a32707969a776c20150ab79b62204918ad6a96599acc99c7d6e99ce1c43eadb77fdf79c0dc59eb517005ab16d6aaa28ab229e68d20bf087ec82a957837390e1
SSDEEP

12288:7b0EifOJq8Ikm2qv1GV8gmxJziOoA3TB98/0v7Z0Q9i4xw3u5IDkd72gGmkRJWk6:7bxgGKLz8G/XBO/0vOAi4xwk9VS6n

Score

10^/10

remcos remotehost collection discovery persistence rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

myfreeenedd.ru:2404

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-E5Y2QK
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 7 IoCs

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

Processes:

resource	yara_rule
behavioral2/memory/1600-50-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/1600-54-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/3144-53-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/3144-51-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/4576-61-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4576-62-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3144-65-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

Processes:

resource	yara_rule
behavioral2/memory/1600-50-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/1600-54-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

Processes:

resource	yara_rule
behavioral2/memory/3144-53-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/3144-51-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/3144-65-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Loads dropped DLL 2 IoCs

Processes:

QuoteQu11262024.scr.exe

pid	Process
3052	QuoteQu11262024.scr.exe
3052	QuoteQu11262024.scr.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

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

Processes:

QuoteQu11262024.scr.exe

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	QuoteQu11262024.scr.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

QuoteQu11262024.scr.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Startup key = "C:\\Users\\Admin\\AppData\\Local\\Temp\\subfolder1\\Badrans.scr"	QuoteQu11262024.scr.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

Processes:

QuoteQu11262024.scr.exe

pid	Process
3748	QuoteQu11262024.scr.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

QuoteQu11262024.scr.exeQuoteQu11262024.scr.exe

pid	Process
3052	QuoteQu11262024.scr.exe
3748	QuoteQu11262024.scr.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

QuoteQu11262024.scr.exeQuoteQu11262024.scr.exe

description	pid	Process	procid_target
PID 3052 set thread context of 3748	3052	QuoteQu11262024.scr.exe	82
PID 3748 set thread context of 3144	3748	QuoteQu11262024.scr.exe	90
PID 3748 set thread context of 1600	3748	QuoteQu11262024.scr.exe	91
PID 3748 set thread context of 4576	3748	QuoteQu11262024.scr.exe	92

Drops file in Program Files directory 1 IoCs

Processes:

QuoteQu11262024.scr.exe

description	ioc	Process
File opened for modification	C:\Program Files (x86)\rumsonderne\rendyrkes.plu	QuoteQu11262024.scr.exe

Drops file in Windows directory 2 IoCs

Processes:

QuoteQu11262024.scr.exe

description	ioc	Process
File opened for modification	C:\Windows\resources\mineralrigste.ini	QuoteQu11262024.scr.exe
File opened for modification	C:\Windows\spaller.ini	QuoteQu11262024.scr.exe

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 5 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

Processes:

QuoteQu11262024.scr.exeQuoteQu11262024.scr.exeQuoteQu11262024.scr.exeQuoteQu11262024.scr.exeQuoteQu11262024.scr.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	QuoteQu11262024.scr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	QuoteQu11262024.scr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	QuoteQu11262024.scr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	QuoteQu11262024.scr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	QuoteQu11262024.scr.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

QuoteQu11262024.scr.exeQuoteQu11262024.scr.exe

pid	Process
3144	QuoteQu11262024.scr.exe
3144	QuoteQu11262024.scr.exe
4576	QuoteQu11262024.scr.exe
4576	QuoteQu11262024.scr.exe
3144	QuoteQu11262024.scr.exe
3144	QuoteQu11262024.scr.exe

Suspicious behavior: MapViewOfSection 4 IoCs

Processes:

QuoteQu11262024.scr.exeQuoteQu11262024.scr.exe

pid	Process
3052	QuoteQu11262024.scr.exe
3748	QuoteQu11262024.scr.exe
3748	QuoteQu11262024.scr.exe
3748	QuoteQu11262024.scr.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

QuoteQu11262024.scr.exe

description	pid	Process
Token: SeDebugPrivilege	4576	QuoteQu11262024.scr.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

QuoteQu11262024.scr.exe

pid	Process
3748	QuoteQu11262024.scr.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

QuoteQu11262024.scr.exeQuoteQu11262024.scr.exe

description	pid	Process	procid_target
PID 3052 wrote to memory of 3748	3052	QuoteQu11262024.scr.exe	82
PID 3052 wrote to memory of 3748	3052	QuoteQu11262024.scr.exe	82
PID 3052 wrote to memory of 3748	3052	QuoteQu11262024.scr.exe	82
PID 3052 wrote to memory of 3748	3052	QuoteQu11262024.scr.exe	82
PID 3052 wrote to memory of 3748	3052	QuoteQu11262024.scr.exe	82
PID 3748 wrote to memory of 3144	3748	QuoteQu11262024.scr.exe	90
PID 3748 wrote to memory of 3144	3748	QuoteQu11262024.scr.exe	90
PID 3748 wrote to memory of 3144	3748	QuoteQu11262024.scr.exe	90
PID 3748 wrote to memory of 1600	3748	QuoteQu11262024.scr.exe	91
PID 3748 wrote to memory of 1600	3748	QuoteQu11262024.scr.exe	91
PID 3748 wrote to memory of 1600	3748	QuoteQu11262024.scr.exe	91
PID 3748 wrote to memory of 4576	3748	QuoteQu11262024.scr.exe	92
PID 3748 wrote to memory of 4576	3748	QuoteQu11262024.scr.exe	92
PID 3748 wrote to memory of 4576	3748	QuoteQu11262024.scr.exe	92

C:\Users\Admin\AppData\Local\Temp\QuoteQu11262024.scr.exe
"C:\Users\Admin\AppData\Local\Temp\QuoteQu11262024.scr.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3052
- C:\Users\Admin\AppData\Local\Temp\QuoteQu11262024.scr.exe
  "C:\Users\Admin\AppData\Local\Temp\QuoteQu11262024.scr.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3748
- - C:\Users\Admin\AppData\Local\Temp\QuoteQu11262024.scr.exe
    C:\Users\Admin\AppData\Local\Temp\QuoteQu11262024.scr.exe /stext "C:\Users\Admin\AppData\Local\Temp\bghapsxtunbeuhcagpslatgehkikrf"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:3144
- - C:\Users\Admin\AppData\Local\Temp\QuoteQu11262024.scr.exe
    C:\Users\Admin\AppData\Local\Temp\QuoteQu11262024.scr.exe /stext "C:\Users\Admin\AppData\Local\Temp\mamsqkquqvtqwvyepaenlgbvqzztlqpqyz"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:1600
- - C:\Users\Admin\AppData\Local\Temp\QuoteQu11262024.scr.exe
    C:\Users\Admin\AppData\Local\Temp\QuoteQu11262024.scr.exe /stext "C:\Users\Admin\AppData\Local\Temp\ouslqd"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4576

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

System Information Discovery

1

T1082

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

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
bac26115d2498d32d3b5693ffe245afb

SHA1
46a5374c4ab0ce64ae8c2e20ad880ee3b3d06791

SHA256
35288adbf019d66e7c29a588dfe977314b83b0ca60770d92d7556eaba7dc28f2

SHA512
fdc0ab07a2ef98a0d9c15034ca74bd948491e43e018562ae4c2dc3667d52de159ded05cfe7e84e01459bec17a85434656b1e84dc60a529af9b85b90f549e863b

Download Submit
C:\Users\Admin\AppData\Local\Temp\bghapsxtunbeuhcagpslatgehkikrf

Filesize
4KB

MD5
f1d2c01ce674ad7d5bad04197c371fbc

SHA1
4bf0ed04d156a3dc6c8d27e134ecbda76d3585aa

SHA256
25b006032deccd628940ef728fffe83b325a85de453a34691f55f570e4460094

SHA512
81cb982cc33dcc27600a8a681c3ec3cc5b9221b95baa45e1ab24479745a9638b9f31d7beeeb1128b3294ff69b44e958c75e25d565f66790c364665caff96ee77

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsnC035.tmp\System.dll

Filesize
11KB

MD5
b0c77267f13b2f87c084fd86ef51ccfc

SHA1
f7543f9e9b4f04386dfbf33c38cbed1bf205afb3

SHA256
a0cac4cf4852895619bc7743ebeb89f9e4927ccdb9e66b1bcd92a4136d0f9c77

SHA512
f2b57a2eea00f52a3c7080f4b5f2bb85a7a9b9f16d12da8f8ff673824556c62a0f742b72be0fd82a2612a4b6dbd7e0fdc27065212da703c2f7e28d199696f66e

Download Submit
memory/1600-54-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1600-46-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1600-49-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1600-50-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3052-28-0x00000000774E1000-0x0000000077601000-memory.dmp

Filesize
1.1MB

Download
memory/3052-29-0x00000000774E1000-0x0000000077601000-memory.dmp

Filesize
1.1MB

Download
memory/3052-30-0x0000000074344000-0x0000000074345000-memory.dmp

Filesize
4KB

Download
memory/3144-44-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3144-48-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3144-65-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3144-53-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3144-51-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3748-68-0x0000000036EB0000-0x0000000036EC9000-memory.dmp

Filesize
100KB

Download
memory/3748-86-0x0000000000460000-0x00000000016B4000-memory.dmp

Filesize
18.3MB

Download
memory/3748-38-0x0000000000460000-0x00000000016B4000-memory.dmp

Filesize
18.3MB

Download
memory/3748-34-0x0000000000460000-0x00000000016B4000-memory.dmp

Filesize
18.3MB

Download
memory/3748-107-0x0000000000460000-0x00000000016B4000-memory.dmp

Filesize
18.3MB

Download
memory/3748-104-0x0000000000460000-0x00000000016B4000-memory.dmp

Filesize
18.3MB

Download
memory/3748-101-0x0000000000460000-0x00000000016B4000-memory.dmp

Filesize
18.3MB

Download
memory/3748-32-0x00000000774E1000-0x0000000077601000-memory.dmp

Filesize
1.1MB

Download
memory/3748-98-0x0000000000460000-0x00000000016B4000-memory.dmp

Filesize
18.3MB

Download
memory/3748-72-0x0000000036EB0000-0x0000000036EC9000-memory.dmp

Filesize
100KB

Download
memory/3748-71-0x0000000036EB0000-0x0000000036EC9000-memory.dmp

Filesize
100KB

Download
memory/3748-74-0x0000000000460000-0x00000000016B4000-memory.dmp

Filesize
18.3MB

Download
memory/3748-77-0x0000000000460000-0x00000000016B4000-memory.dmp

Filesize
18.3MB

Download
memory/3748-31-0x0000000077568000-0x0000000077569000-memory.dmp

Filesize
4KB

Download
memory/3748-80-0x0000000000460000-0x00000000016B4000-memory.dmp

Filesize
18.3MB

Download
memory/3748-83-0x0000000000460000-0x00000000016B4000-memory.dmp

Filesize
18.3MB

Download
memory/3748-42-0x00000000774E1000-0x0000000077601000-memory.dmp

Filesize
1.1MB

Download
memory/4576-55-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4576-60-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4576-62-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4576-61-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads