remcos | 5094b350ce5e98bca3543599d436ff84561d35bbead92c0bd9f246fd088e396d

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-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
behavioral1/memory/3060-66-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/1532-65-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/3060-64-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/448-63-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/1532-62-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/3060-71-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/1532-74-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/1532-65-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral1/memory/1532-62-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral1/memory/1532-74-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/3060-66-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/3060-64-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/3060-71-0x0000000000400000-0x0000000000478000-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
2808	slashing.exe

Loads dropped DLL 1 IoCs

pid	Process
2656	r001_ScannedwithXeroxMultifunctionPrinter.exe

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\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/0x00060000000186ca-13.dat	autoit_exe
behavioral1/memory/2808-31-0x0000000000060000-0x00000000001F5000-memory.dmp	autoit_exe
behavioral1/memory/2808-42-0x0000000000060000-0x00000000001F5000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2808 set thread context of 2340	2808	slashing.exe	31
PID 2340 set thread context of 3060	2340	svchost.exe	32
PID 2340 set thread context of 1532	2340	svchost.exe	33
PID 2340 set thread context of 448	2340	svchost.exe	34

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	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	r001_ScannedwithXeroxMultifunctionPrinter.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	slashing.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3060	svchost.exe
3060	svchost.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
2808	slashing.exe
2340	svchost.exe
2340	svchost.exe
2340	svchost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	448	svchost.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
2656	r001_ScannedwithXeroxMultifunctionPrinter.exe
2656	r001_ScannedwithXeroxMultifunctionPrinter.exe
2808	slashing.exe
2808	slashing.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
2656	r001_ScannedwithXeroxMultifunctionPrinter.exe
2656	r001_ScannedwithXeroxMultifunctionPrinter.exe
2808	slashing.exe
2808	slashing.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2340	svchost.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2656 wrote to memory of 2808	2656	r001_ScannedwithXeroxMultifunctionPrinter.exe	30
PID 2656 wrote to memory of 2808	2656	r001_ScannedwithXeroxMultifunctionPrinter.exe	30
PID 2656 wrote to memory of 2808	2656	r001_ScannedwithXeroxMultifunctionPrinter.exe	30
PID 2656 wrote to memory of 2808	2656	r001_ScannedwithXeroxMultifunctionPrinter.exe	30
PID 2808 wrote to memory of 2340	2808	slashing.exe	31
PID 2808 wrote to memory of 2340	2808	slashing.exe	31
PID 2808 wrote to memory of 2340	2808	slashing.exe	31
PID 2808 wrote to memory of 2340	2808	slashing.exe	31
PID 2808 wrote to memory of 2340	2808	slashing.exe	31
PID 2340 wrote to memory of 3060	2340	svchost.exe	32
PID 2340 wrote to memory of 3060	2340	svchost.exe	32
PID 2340 wrote to memory of 3060	2340	svchost.exe	32
PID 2340 wrote to memory of 3060	2340	svchost.exe	32
PID 2340 wrote to memory of 3060	2340	svchost.exe	32
PID 2340 wrote to memory of 1532	2340	svchost.exe	33
PID 2340 wrote to memory of 1532	2340	svchost.exe	33
PID 2340 wrote to memory of 1532	2340	svchost.exe	33
PID 2340 wrote to memory of 1532	2340	svchost.exe	33
PID 2340 wrote to memory of 1532	2340	svchost.exe	33
PID 2340 wrote to memory of 448	2340	svchost.exe	34
PID 2340 wrote to memory of 448	2340	svchost.exe	34
PID 2340 wrote to memory of 448	2340	svchost.exe	34
PID 2340 wrote to memory of 448	2340	svchost.exe	34
PID 2340 wrote to memory of 448	2340	svchost.exe	34

C:\Users\Admin\AppData\Local\Temp\r001_ScannedwithXeroxMultifunctionPrinter.exe
"C:\Users\Admin\AppData\Local\Temp\r001_ScannedwithXeroxMultifunctionPrinter.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2656
- 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:2808
- - 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:2340
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\jmbmkxfdlizdgw"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:3060
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\logelpqwyqrqqkflk"
      4⤵
      Accesses Microsoft Outlook accounts
      System Location Discovery: System Language Discovery
      PID:1532
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\wilpehbyuyjvtqtpczhb"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      PID:448

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
cb23071a78552a195013eb2a4f2709d7

SHA1
dce5074dc5562f781df75dd13201c5f14f6d1f0f

SHA256
0752e6d31c2b310cdfa63ab176429190b3b4a7421c18fe7c330be5c3933c423b

SHA512
dce47337d36ea2fce7d00ef7eaa18359de6cc3a8f4c712adb0f55add52f0fad7cd8a44b78b8795b28c1cb198c632866d89a74754bb684fad39740deab69b26db

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

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/448-63-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/448-60-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/448-61-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1532-74-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1532-54-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1532-62-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1532-65-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1532-58-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2340-36-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2340-41-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2340-48-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2340-118-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2340-44-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2340-110-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2340-43-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2340-103-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2340-86-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2340-102-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2340-35-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2340-94-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2340-39-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2340-45-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2340-40-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2340-93-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2340-33-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2340-119-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2340-75-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2340-76-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2340-80-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2340-79-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2340-81-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2340-85-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2656-11-0x00000000001E0000-0x00000000001E4000-memory.dmp

Filesize
16KB

Download
memory/2808-42-0x0000000000060000-0x00000000001F5000-memory.dmp

Filesize
1.6MB

Download
memory/2808-31-0x0000000000060000-0x00000000001F5000-memory.dmp

Filesize
1.6MB

Download
memory/3060-71-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3060-64-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3060-66-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3060-57-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3060-49-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3060-51-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download