remcos | 363ae4cce61e6e7a7727d1975341521c243a35999f18e805357378d29e437e91

Analysis

max time kernel
149s
max time network
133s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
17/02/2025, 06:01

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General

Target

001_Scanned with Xerox Multifunction Printer.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
behavioral1/memory/972-71-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/1696-72-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/2956-69-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/972-66-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/2956-65-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/2956-77-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/972-82-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/972-71-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral1/memory/972-66-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral1/memory/972-82-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/2956-69-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/2956-65-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/2956-77-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

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
2388	slashing.exe

Loads dropped DLL 1 IoCs

pid	Process
2996	001_Scanned with Xerox Multifunction Printer.exe

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	svchost.exe

AutoIT Executable 3 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/files/0x000600000001878d-13.dat	autoit_exe
behavioral1/memory/2388-31-0x0000000000050000-0x00000000001E5000-memory.dmp	autoit_exe
behavioral1/memory/2388-36-0x0000000000050000-0x00000000001E5000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2388 set thread context of 2736	2388	slashing.exe	31
PID 2736 set thread context of 2956	2736	svchost.exe	34
PID 2736 set thread context of 972	2736	svchost.exe	35
PID 2736 set thread context of 1696	2736	svchost.exe	36

System Location Discovery: System Language Discovery 1 TTPs 6 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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	001_Scanned with Xerox Multifunction Printer.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2956	svchost.exe
2956	svchost.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
2388	slashing.exe
2736	svchost.exe
2736	svchost.exe
2736	svchost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1696	svchost.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
2996	001_Scanned with Xerox Multifunction Printer.exe
2996	001_Scanned with Xerox Multifunction Printer.exe
2388	slashing.exe
2388	slashing.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
2996	001_Scanned with Xerox Multifunction Printer.exe
2996	001_Scanned with Xerox Multifunction Printer.exe
2388	slashing.exe
2388	slashing.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2736	svchost.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2996 wrote to memory of 2388	2996	001_Scanned with Xerox Multifunction Printer.exe	30
PID 2996 wrote to memory of 2388	2996	001_Scanned with Xerox Multifunction Printer.exe	30
PID 2996 wrote to memory of 2388	2996	001_Scanned with Xerox Multifunction Printer.exe	30
PID 2996 wrote to memory of 2388	2996	001_Scanned with Xerox Multifunction Printer.exe	30
PID 2388 wrote to memory of 2736	2388	slashing.exe	31
PID 2388 wrote to memory of 2736	2388	slashing.exe	31
PID 2388 wrote to memory of 2736	2388	slashing.exe	31
PID 2388 wrote to memory of 2736	2388	slashing.exe	31
PID 2388 wrote to memory of 2736	2388	slashing.exe	31
PID 2736 wrote to memory of 2956	2736	svchost.exe	34
PID 2736 wrote to memory of 2956	2736	svchost.exe	34
PID 2736 wrote to memory of 2956	2736	svchost.exe	34
PID 2736 wrote to memory of 2956	2736	svchost.exe	34
PID 2736 wrote to memory of 2956	2736	svchost.exe	34
PID 2736 wrote to memory of 972	2736	svchost.exe	35
PID 2736 wrote to memory of 972	2736	svchost.exe	35
PID 2736 wrote to memory of 972	2736	svchost.exe	35
PID 2736 wrote to memory of 972	2736	svchost.exe	35
PID 2736 wrote to memory of 972	2736	svchost.exe	35
PID 2736 wrote to memory of 1696	2736	svchost.exe	36
PID 2736 wrote to memory of 1696	2736	svchost.exe	36
PID 2736 wrote to memory of 1696	2736	svchost.exe	36
PID 2736 wrote to memory of 1696	2736	svchost.exe	36
PID 2736 wrote to memory of 1696	2736	svchost.exe	36

C:\Users\Admin\AppData\Local\Temp\001_Scanned with Xerox Multifunction Printer.exe
"C:\Users\Admin\AppData\Local\Temp\001_Scanned with Xerox Multifunction Printer.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2996
- C:\Users\Admin\AppData\Local\Keily\slashing.exe
  "C:\Users\Admin\AppData\Local\Temp\001_Scanned with Xerox Multifunction Printer.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:2388
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\001_Scanned with Xerox Multifunction Printer.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2736
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\rpendsgn"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2956
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\crsgekrpunz"
      4⤵
      Accesses Microsoft Outlook accounts
      System Location Discovery: System Language Discovery
      PID:972
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\mmxyfdciidrxbvs"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      PID:1696

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

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
89036fd60ec1834631cac97aaa8024dd

SHA1
e65563396da524040a4aabcb650093cd1641e3d2

SHA256
a4e84a4d203b7414df8f8af3b46e54ed821dd90b009dda09c37544b025d1eeb5

SHA512
6996a0f0b59db10cf10b83d44a43437ee5eae32c5ebbaf7649d4f4b724bb04b0bda5ca5a4e54ddfa843b3f32f1f74fdab8e0ce1c2bc5cfc2c36c8592c0cace11

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

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

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

Filesize
28KB

MD5
4a44eb67327e94d71a81cb4ef1071b09

SHA1
cd315c1d93df93cce45b9a6e4e4114b306aad004

SHA256
5932a4f606d0bf439780e377218f2a40b1e09e7c4db39c292b84133e4eb61147

SHA512
658f28d88bcae1a253026d5e655029b011d64411fb3727efd553a01cedc4a685d645a8904cb269a38d3f329f12a44b8d4a25cd6b805cb4659585d8f243cdcda7

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

Filesize
1.6MB

MD5
367134321006bd597072901b6beb5833

SHA1
da4276e17ca6847ca61d8533d7abd158572e5a7a

SHA256
5094b350ce5e98bca3543599d436ff84561d35bbead92c0bd9f246fd088e396d

SHA512
b93672cc3c97123c9dacd93dac61d124e1e6e6673be0178b9a0a824b453272dc21648ccbdf5f996abb495943d6e0fff0b92bba415dc9c83394502ce9178d72cf

Download Submit
memory/972-82-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/972-58-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/972-64-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/972-66-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/972-71-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/972-60-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1696-70-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1696-72-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1696-68-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2388-31-0x0000000000050000-0x00000000001E5000-memory.dmp

Filesize
1.6MB

Download
memory/2388-36-0x0000000000050000-0x00000000001E5000-memory.dmp

Filesize
1.6MB

Download
memory/2736-38-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2736-86-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2736-41-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2736-42-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2736-45-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2736-49-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2736-111-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2736-104-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2736-48-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2736-46-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2736-103-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2736-96-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2736-95-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2736-37-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2736-35-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2736-89-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2736-83-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2736-33-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2736-80-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2736-81-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2736-47-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2736-87-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2736-52-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2956-77-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2956-55-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2956-65-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2956-57-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2956-63-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2956-69-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2996-11-0x00000000001A0000-0x00000000001A4000-memory.dmp

Filesize
16KB

Download