remcos | 50d113ca212ad87b6d19e14c12cd91638b8cd4da4c8fc7c020dda0557c93fd85

Analysis

max time kernel
147s
max time network
140s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
08-01-2025 14:26

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General

Target

NOGHCV09800.exe
Size

1.4MB
MD5

52213367d8528d5da7e3ed356d80ddc3
SHA1

f99fa064f78f516f7b4e6a0167fc54a193cd642d
SHA256

17a545082a45c4c219bd09093349cb12cafef84e37a8dd989b6382a434b89544
SHA512

a1d4fadf5dbfb32bdc6939b12d0f11c09be991fb1a397d4bfe97db880baf0d8803103be5166993038b79b8ec3f03122c4e44703d7485a6b77bc97c17a777472e
SSDEEP

24576:CiUmSB/o5d1ubcvI9/0XhFXSQMJ/ZDfJvXnaPw9Qs287sKeXnusOag6hj3:C/mU/ohubcvIx0xFXtMr7JvXa4x28Knt

Score

10^/10

remcos remotehost collection discovery rat spyware stealer upx

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

192.210.150.26:3678

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-UJY4D8
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 4 IoCs

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

resource	yara_rule
behavioral2/memory/32-44-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/1664-46-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/2224-53-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/32-55-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/1664-46-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 2 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/32-44-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/32-55-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Drops startup file 1 IoCs

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

Executes dropped EXE 5 IoCs

pid	Process
1476	Milburr.exe
1344	Milburr.exe
32	Milburr.exe
1664	Milburr.exe
2224	Milburr.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

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	Milburr.exe

AutoIT Executable 4 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/4228-8-0x0000000000F20000-0x0000000001207000-memory.dmp	autoit_exe
behavioral2/memory/1476-18-0x0000000000D20000-0x0000000001007000-memory.dmp	autoit_exe
behavioral2/memory/1344-19-0x0000000000D20000-0x0000000001007000-memory.dmp	autoit_exe
behavioral2/memory/1344-63-0x0000000000D20000-0x0000000001007000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1344 set thread context of 32	1344	Milburr.exe	85
PID 1344 set thread context of 1664	1344	Milburr.exe	86
PID 1344 set thread context of 2224	1344	Milburr.exe	87

UPX packed file 7 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4228-0-0x0000000000F20000-0x0000000001207000-memory.dmp	upx
behavioral2/files/0x000a000000023b79-5.dat	upx
behavioral2/memory/1476-9-0x0000000000D20000-0x0000000001007000-memory.dmp	upx
behavioral2/memory/4228-8-0x0000000000F20000-0x0000000001207000-memory.dmp	upx
behavioral2/memory/1476-18-0x0000000000D20000-0x0000000001007000-memory.dmp	upx
behavioral2/memory/1344-19-0x0000000000D20000-0x0000000001007000-memory.dmp	upx
behavioral2/memory/1344-63-0x0000000000D20000-0x0000000001007000-memory.dmp	upx

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	Milburr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Milburr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Milburr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NOGHCV09800.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Milburr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Milburr.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
32	Milburr.exe
32	Milburr.exe
2224	Milburr.exe
2224	Milburr.exe
32	Milburr.exe
32	Milburr.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
1344	Milburr.exe
1344	Milburr.exe
1344	Milburr.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2224	Milburr.exe

Suspicious use of FindShellTrayWindow 6 IoCs

pid	Process
4228	NOGHCV09800.exe
4228	NOGHCV09800.exe
1476	Milburr.exe
1476	Milburr.exe
1344	Milburr.exe
1344	Milburr.exe

Suspicious use of SendNotifyMessage 6 IoCs

pid	Process
4228	NOGHCV09800.exe
4228	NOGHCV09800.exe
1476	Milburr.exe
1476	Milburr.exe
1344	Milburr.exe
1344	Milburr.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 4228 wrote to memory of 1476	4228	NOGHCV09800.exe	83
PID 4228 wrote to memory of 1476	4228	NOGHCV09800.exe	83
PID 4228 wrote to memory of 1476	4228	NOGHCV09800.exe	83
PID 1476 wrote to memory of 1344	1476	Milburr.exe	84
PID 1476 wrote to memory of 1344	1476	Milburr.exe	84
PID 1476 wrote to memory of 1344	1476	Milburr.exe	84
PID 1344 wrote to memory of 32	1344	Milburr.exe	85
PID 1344 wrote to memory of 32	1344	Milburr.exe	85
PID 1344 wrote to memory of 32	1344	Milburr.exe	85
PID 1344 wrote to memory of 32	1344	Milburr.exe	85
PID 1344 wrote to memory of 1664	1344	Milburr.exe	86
PID 1344 wrote to memory of 1664	1344	Milburr.exe	86
PID 1344 wrote to memory of 1664	1344	Milburr.exe	86
PID 1344 wrote to memory of 1664	1344	Milburr.exe	86
PID 1344 wrote to memory of 2224	1344	Milburr.exe	87
PID 1344 wrote to memory of 2224	1344	Milburr.exe	87
PID 1344 wrote to memory of 2224	1344	Milburr.exe	87
PID 1344 wrote to memory of 2224	1344	Milburr.exe	87

C:\Users\Admin\AppData\Local\Temp\NOGHCV09800.exe
"C:\Users\Admin\AppData\Local\Temp\NOGHCV09800.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:4228
- C:\Users\Admin\AppData\Local\tilthead\Milburr.exe
  "C:\Users\Admin\AppData\Local\Temp\NOGHCV09800.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:1476
- - C:\Users\Admin\AppData\Local\tilthead\Milburr.exe
    "C:\Users\Admin\AppData\Local\tilthead\Milburr.exe"
    3⤵
    - 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:1344
  - - C:\Users\Admin\AppData\Local\tilthead\Milburr.exe
      C:\Users\Admin\AppData\Local\tilthead\Milburr.exe /stext "C:\Users\Admin\AppData\Local\Temp\rnakmkmlymbghghqovihl"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:32
  - - C:\Users\Admin\AppData\Local\tilthead\Milburr.exe
      C:\Users\Admin\AppData\Local\tilthead\Milburr.exe /stext "C:\Users\Admin\AppData\Local\Temp\bhfdmdxfmutsrmvuggubwnizx"
      4⤵
      Executes dropped EXE
      Accesses Microsoft Outlook accounts
      System Location Discovery: System Language Discovery
      PID:1664
  - - C:\Users\Admin\AppData\Local\tilthead\Milburr.exe
      C:\Users\Admin\AppData\Local\tilthead\Milburr.exe /stext "C:\Users\Admin\AppData\Local\Temp\mjlonvhgaclxusrypqhczrdqfisd"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2224

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
01acb226ac14ee7b6cc9e9d4a256f1c2

SHA1
b76b367ea2ccc92f057bb1e908a5263ccd66245c

SHA256
4213e17148d96b9c6487a9305f38eb5c8f32c324b5833b414340cd9557262a8d

SHA512
0598fc4434b29090024830ccbc8bd5e5ae487d1a8faaf334902273628087b7445c60ce8665fd34bb0b9c9db000a0f8d7a98aaff3bb6d32e3b4ed991ca1bf5f11

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

Filesize
4KB

MD5
16dfb23eaa7972c59c36fcbc0946093b

SHA1
1e9e3ff83a05131575f67e202d352709205f20f8

SHA256
36c49c94327c8cadcad4c0d2b3a8f5162fc7bb86624923484476c5f7b960bc4c

SHA512
a8b38b5e7bf886b78c5c7f01234b44647a252d4dfbcc06c99b863f8e160e3cfc151b2a83b8b49e09d13e8547419467da4bffbb8dee5fc6740032eb7c839d89dc

Download Submit
C:\Users\Admin\AppData\Local\tilthead\Milburr.exe

Filesize
1.4MB

MD5
52213367d8528d5da7e3ed356d80ddc3

SHA1
f99fa064f78f516f7b4e6a0167fc54a193cd642d

SHA256
17a545082a45c4c219bd09093349cb12cafef84e37a8dd989b6382a434b89544

SHA512
a1d4fadf5dbfb32bdc6939b12d0f11c09be991fb1a397d4bfe97db880baf0d8803103be5166993038b79b8ec3f03122c4e44703d7485a6b77bc97c17a777472e

Download Submit
memory/32-37-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/32-55-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/32-44-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/32-40-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/32-41-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1344-65-0x0000000004200000-0x0000000004300000-memory.dmp

Filesize
1024KB

Download
memory/1344-66-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1344-30-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1344-29-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1344-27-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1344-31-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1344-32-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1344-33-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1344-34-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1344-36-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1344-23-0x0000000004200000-0x0000000004300000-memory.dmp

Filesize
1024KB

Download
memory/1344-19-0x0000000000D20000-0x0000000001007000-memory.dmp

Filesize
2.9MB

Download
memory/1344-115-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1344-114-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1344-104-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1344-103-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1344-93-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1344-92-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1344-82-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1344-81-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1344-71-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1344-70-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1344-57-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1344-60-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1344-61-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1344-62-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1344-63-0x0000000000D20000-0x0000000001007000-memory.dmp

Filesize
2.9MB

Download
memory/1344-28-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1476-9-0x0000000000D20000-0x0000000001007000-memory.dmp

Filesize
2.9MB

Download
memory/1476-14-0x0000000003710000-0x0000000003810000-memory.dmp

Filesize
1024KB

Download
memory/1476-18-0x0000000000D20000-0x0000000001007000-memory.dmp

Filesize
2.9MB

Download
memory/1664-42-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1664-45-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1664-46-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2224-47-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2224-52-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2224-53-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4228-0-0x0000000000F20000-0x0000000001207000-memory.dmp

Filesize
2.9MB

Download
memory/4228-8-0x0000000000F20000-0x0000000001207000-memory.dmp

Filesize
2.9MB

Download
memory/4228-3-0x0000000003BD0000-0x0000000003CD0000-memory.dmp

Filesize
1024KB

Download