remcos | 5094b350ce5e98bca3543599d436ff84561d35bbead92c0bd9f246fd088e396d

Analysis

max time kernel
149s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20250211-en
resource tags

arch:x64arch:x86image:win10v2004-20250211-enlocale:en-usos:windows10-2004-x64system
submitted
17/02/2025, 06:00

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General

Target

r001_ScannedwithXeroxMultifunctionPrinter.exe
Size

1.6MB
MD5

367134321006bd597072901b6beb5833
SHA1

da4276e17ca6847ca61d8533d7abd158572e5a7a
SHA256

5094b350ce5e98bca3543599d436ff84561d35bbead92c0bd9f246fd088e396d
SHA512

b93672cc3c97123c9dacd93dac61d124e1e6e6673be0178b9a0a824b453272dc21648ccbdf5f996abb495943d6e0fff0b92bba415dc9c83394502ce9178d72cf
SSDEEP

24576:iu6J33O0c+JY5UZ+XC0kGso6Fa3Q/rZ3QqL5UnNyh+WY:Eu0c++OCvkGs9Fa3Qt75Un6Y

Score

10^/10

remcos remotehost collection discovery rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

216.250.252.33:60309

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-TJ7QLN
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.

resource	yara_rule
behavioral2/memory/4076-62-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/4076-57-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/1668-53-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/4076-52-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/1668-56-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/4588-64-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/1668-66-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/4076-62-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/4076-57-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/4076-52-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/1668-53-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/1668-56-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/1668-66-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Downloads MZ/PE file 1 IoCs

flow	pid	Process
53	4444	Process not Found

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\slashing.vbs	slashing.exe

Executes dropped EXE 1 IoCs

pid	Process
3552	slashing.exe

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1318997816-2171176372-1451785247-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	svchost.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/files/0x000300000001db4d-14.dat	autoit_exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 3552 set thread context of 4008	3552	slashing.exe	90
PID 4008 set thread context of 1668	4008	svchost.exe	96
PID 4008 set thread context of 4076	4008	svchost.exe	97
PID 4008 set thread context of 4588	4008	svchost.exe	98

System Location Discovery: System Language Discovery 1 TTPs 7 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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MicrosoftEdgeUpdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	r001_ScannedwithXeroxMultifunctionPrinter.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	slashing.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
1828	MicrosoftEdgeUpdate.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1668	svchost.exe
1668	svchost.exe
4588	svchost.exe
4588	svchost.exe
1668	svchost.exe
1668	svchost.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
3552	slashing.exe
4008	svchost.exe
4008	svchost.exe
4008	svchost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4588	svchost.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
2688	r001_ScannedwithXeroxMultifunctionPrinter.exe
2688	r001_ScannedwithXeroxMultifunctionPrinter.exe
3552	slashing.exe
3552	slashing.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
2688	r001_ScannedwithXeroxMultifunctionPrinter.exe
2688	r001_ScannedwithXeroxMultifunctionPrinter.exe
3552	slashing.exe
3552	slashing.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4008	svchost.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2688 wrote to memory of 3552	2688	r001_ScannedwithXeroxMultifunctionPrinter.exe	89
PID 2688 wrote to memory of 3552	2688	r001_ScannedwithXeroxMultifunctionPrinter.exe	89
PID 2688 wrote to memory of 3552	2688	r001_ScannedwithXeroxMultifunctionPrinter.exe	89
PID 3552 wrote to memory of 4008	3552	slashing.exe	90
PID 3552 wrote to memory of 4008	3552	slashing.exe	90
PID 3552 wrote to memory of 4008	3552	slashing.exe	90
PID 3552 wrote to memory of 4008	3552	slashing.exe	90
PID 4008 wrote to memory of 1668	4008	svchost.exe	96
PID 4008 wrote to memory of 1668	4008	svchost.exe	96
PID 4008 wrote to memory of 1668	4008	svchost.exe	96
PID 4008 wrote to memory of 1668	4008	svchost.exe	96
PID 4008 wrote to memory of 4076	4008	svchost.exe	97
PID 4008 wrote to memory of 4076	4008	svchost.exe	97
PID 4008 wrote to memory of 4076	4008	svchost.exe	97
PID 4008 wrote to memory of 4076	4008	svchost.exe	97
PID 4008 wrote to memory of 4588	4008	svchost.exe	98
PID 4008 wrote to memory of 4588	4008	svchost.exe	98
PID 4008 wrote to memory of 4588	4008	svchost.exe	98
PID 4008 wrote to memory of 4588	4008	svchost.exe	98

C:\Users\Admin\AppData\Local\Temp\r001_ScannedwithXeroxMultifunctionPrinter.exe
"C:\Users\Admin\AppData\Local\Temp\r001_ScannedwithXeroxMultifunctionPrinter.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2688
- C:\Users\Admin\AppData\Local\Keily\slashing.exe
  "C:\Users\Admin\AppData\Local\Temp\r001_ScannedwithXeroxMultifunctionPrinter.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:3552
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\r001_ScannedwithXeroxMultifunctionPrinter.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4008
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\ljufoypvbxhdccjqmshlgbpu"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:1668
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\olhypqaxpfzqeixcvcunrfklroi"
      4⤵
      Accesses Microsoft Outlook accounts
      System Location Discovery: System Language Discovery
      PID:4076
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\yfnqpilqlnruoolgmfhguseuacabvss"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4588

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSI1IiBpbnN0YWxsZGF0ZXRpbWU9IjE3MzkyODMzNzEiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4Mzc1NDE5Mjc1MzAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1Mjg0MDU4Mzk3Ii8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:1828

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
e1d0789444d252c2bf55059f111e5f1e

SHA1
6f5023bbe99d1634a43bd0e1a42f55bb89c524a0

SHA256
a6853e2e367704be6898279c218dd4229e57ae8679f085c63e76f499a06dd52d

SHA512
2ce94836bced270ed31fdcbe63898b9fd799dd556b4f1e44d3062c2dedec8afa93aa08caf6d0b5c8d5cbccd15119c5f8656ed99239388ebc29d6f302c2590fa6

Download Submit
C:\Users\Admin\AppData\Local\Keily\slashing.exe

Filesize
1.6MB

MD5
367134321006bd597072901b6beb5833

SHA1
da4276e17ca6847ca61d8533d7abd158572e5a7a

SHA256
5094b350ce5e98bca3543599d436ff84561d35bbead92c0bd9f246fd088e396d

SHA512
b93672cc3c97123c9dacd93dac61d124e1e6e6673be0178b9a0a824b453272dc21648ccbdf5f996abb495943d6e0fff0b92bba415dc9c83394502ce9178d72cf

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

Filesize
4KB

MD5
c7fcb663e76d11b7fd82fe05a8f7aa60

SHA1
ac3757be6f23fc129d788af63b313aba3ae6191b

SHA256
a09e1825e42c3ff69c2296c14329bb872f82d95387acba48521c74a13728fda2

SHA512
b457ee6989babd0ca98a7a0907367f9cd0bdcaaee0a222ff55f017ac2c44b51b5ab58eb913c27771f90691f4c0c8bb6649d32703ecfc2acc37e14676a194f460

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

Filesize
28KB

MD5
4a44eb67327e94d71a81cb4ef1071b09

SHA1
cd315c1d93df93cce45b9a6e4e4114b306aad004

SHA256
5932a4f606d0bf439780e377218f2a40b1e09e7c4db39c292b84133e4eb61147

SHA512
658f28d88bcae1a253026d5e655029b011d64411fb3727efd553a01cedc4a685d645a8904cb269a38d3f329f12a44b8d4a25cd6b805cb4659585d8f243cdcda7

Download Submit
memory/1668-46-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1668-66-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1668-50-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1668-56-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1668-53-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2688-11-0x0000000000E20000-0x0000000000E24000-memory.dmp

Filesize
16KB

Download
memory/4008-71-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4008-109-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4008-41-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4008-42-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4008-44-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4008-39-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4008-101-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4008-94-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4008-38-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4008-40-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4008-93-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4008-86-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4008-55-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4008-36-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4008-102-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4008-85-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4008-110-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4008-37-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4008-33-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4008-32-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4008-68-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4008-72-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4008-31-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4008-73-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4008-76-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4008-77-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4008-30-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4076-52-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4076-57-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4076-62-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4076-51-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4076-48-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4588-61-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4588-64-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4588-54-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download