remcos | 49e8a1f12fb5202470604efe01c0d60949d20d302a76aed85b2a049e91266366

Analysis

max time kernel
149s
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
03-12-2024 13:30

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General

Target

z49FACTURA-0987678.exe
Size

854KB
MD5

876f47f33c5975497c15bf24d50952b5
SHA1

a47579ea0e5d47ceb89cbb3450f4c482768a0bf8
SHA256

49e8a1f12fb5202470604efe01c0d60949d20d302a76aed85b2a049e91266366
SHA512

7346f82c0c7065d2de4ec5d5747235ce0ada6e799e6cf461a57ce15969ccd0bf92bf7d5efb2e5b57ad4be0defd3a716bdb6a8c609e0abbe0fb3832f5cfbfd6c3
SSDEEP

24576:Zrl6kD68JmlotQf0hwmcZIR5MRsJOjOZW89S+7Ed7b:1l328U2yf0CmOeMRsnZW8o/h

Score

10^/10

remcos remotehost collection discovery rat spyware stealer upx

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

192.210.150.26:8787

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-R1T905
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/1456-44-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/1456-43-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/5104-59-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/1200-55-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/1200-54-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/1200-52-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/1456-63-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

Processes:

resource	yara_rule
behavioral2/memory/1200-55-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/1200-54-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/1200-52-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

Processes:

resource	yara_rule
behavioral2/memory/1456-44-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/1456-43-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/1456-63-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Drops startup file 1 IoCs

Processes:

turbinals.exe

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

Executes dropped EXE 7 IoCs

Processes:

turbinals.exeturbinals.exeturbinals.exeturbinals.exeturbinals.exeturbinals.exeturbinals.exe

pid	Process
3260	turbinals.exe
4224	turbinals.exe
3564	turbinals.exe
1456	turbinals.exe
1200	turbinals.exe
4280	turbinals.exe
5104	turbinals.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:

turbinals.exe

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

AutoIT Executable 3 IoCs

AutoIT scripts compiled to PE executables.

Processes:

resource	yara_rule
behavioral2/memory/4804-13-0x0000000000EE0000-0x00000000010B8000-memory.dmp	autoit_exe
behavioral2/memory/3260-22-0x00000000013F0000-0x00000000017F0000-memory.dmp	autoit_exe
behavioral2/memory/3260-60-0x00000000008D0000-0x0000000000AA8000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

turbinals.exe

description	pid	Process	procid_target
PID 3260 set thread context of 1456	3260	turbinals.exe	86
PID 3260 set thread context of 1200	3260	turbinals.exe	87
PID 3260 set thread context of 5104	3260	turbinals.exe	89

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/4804-0-0x0000000000EE0000-0x00000000010B8000-memory.dmp	upx
behavioral2/files/0x0007000000023c92-10.dat	upx
behavioral2/memory/3260-11-0x00000000008D0000-0x0000000000AA8000-memory.dmp	upx
behavioral2/memory/4804-13-0x0000000000EE0000-0x00000000010B8000-memory.dmp	upx
behavioral2/memory/3260-60-0x00000000008D0000-0x0000000000AA8000-memory.dmp	upx

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:

turbinals.exeturbinals.exeturbinals.exez49FACTURA-0987678.exeturbinals.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	turbinals.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	turbinals.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	turbinals.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	z49FACTURA-0987678.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	turbinals.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

turbinals.exeturbinals.exe

pid	Process
1456	turbinals.exe
1456	turbinals.exe
5104	turbinals.exe
5104	turbinals.exe
1456	turbinals.exe
1456	turbinals.exe

Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

turbinals.exe

pid	Process
3260	turbinals.exe
3260	turbinals.exe
3260	turbinals.exe
3260	turbinals.exe
3260	turbinals.exe
3260	turbinals.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

turbinals.exe

description	pid	Process
Token: SeDebugPrivilege	5104	turbinals.exe

Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

z49FACTURA-0987678.exeturbinals.exe

pid	Process
4804	z49FACTURA-0987678.exe
4804	z49FACTURA-0987678.exe
3260	turbinals.exe
3260	turbinals.exe

Suspicious use of SendNotifyMessage 4 IoCs

Processes:

z49FACTURA-0987678.exeturbinals.exe

pid	Process
4804	z49FACTURA-0987678.exe
4804	z49FACTURA-0987678.exe
3260	turbinals.exe
3260	turbinals.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

z49FACTURA-0987678.exeturbinals.exe

description	pid	Process	procid_target
PID 4804 wrote to memory of 3260	4804	z49FACTURA-0987678.exe	83
PID 4804 wrote to memory of 3260	4804	z49FACTURA-0987678.exe	83
PID 4804 wrote to memory of 3260	4804	z49FACTURA-0987678.exe	83
PID 3260 wrote to memory of 4224	3260	turbinals.exe	84
PID 3260 wrote to memory of 4224	3260	turbinals.exe	84
PID 3260 wrote to memory of 4224	3260	turbinals.exe	84
PID 3260 wrote to memory of 3564	3260	turbinals.exe	85
PID 3260 wrote to memory of 3564	3260	turbinals.exe	85
PID 3260 wrote to memory of 3564	3260	turbinals.exe	85
PID 3260 wrote to memory of 1456	3260	turbinals.exe	86
PID 3260 wrote to memory of 1456	3260	turbinals.exe	86
PID 3260 wrote to memory of 1456	3260	turbinals.exe	86
PID 3260 wrote to memory of 1456	3260	turbinals.exe	86
PID 3260 wrote to memory of 1200	3260	turbinals.exe	87
PID 3260 wrote to memory of 1200	3260	turbinals.exe	87
PID 3260 wrote to memory of 1200	3260	turbinals.exe	87
PID 3260 wrote to memory of 1200	3260	turbinals.exe	87
PID 3260 wrote to memory of 4280	3260	turbinals.exe	88
PID 3260 wrote to memory of 4280	3260	turbinals.exe	88
PID 3260 wrote to memory of 4280	3260	turbinals.exe	88
PID 3260 wrote to memory of 5104	3260	turbinals.exe	89
PID 3260 wrote to memory of 5104	3260	turbinals.exe	89
PID 3260 wrote to memory of 5104	3260	turbinals.exe	89
PID 3260 wrote to memory of 5104	3260	turbinals.exe	89

C:\Users\Admin\AppData\Local\Temp\z49FACTURA-0987678.exe
"C:\Users\Admin\AppData\Local\Temp\z49FACTURA-0987678.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:4804
- C:\Users\Admin\AppData\Local\acceptancy\turbinals.exe
  "C:\Users\Admin\AppData\Local\Temp\z49FACTURA-0987678.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:3260
- - C:\Users\Admin\AppData\Local\acceptancy\turbinals.exe
    C:\Users\Admin\AppData\Local\acceptancy\turbinals.exe /stext "C:\Users\Admin\AppData\Local\Temp\vseoa"
    3⤵
    - Executes dropped EXE
    PID:4224
- - C:\Users\Admin\AppData\Local\acceptancy\turbinals.exe
    C:\Users\Admin\AppData\Local\acceptancy\turbinals.exe /stext "C:\Users\Admin\AppData\Local\Temp\vseoa"
    3⤵
    - Executes dropped EXE
    PID:3564
- - C:\Users\Admin\AppData\Local\acceptancy\turbinals.exe
    C:\Users\Admin\AppData\Local\acceptancy\turbinals.exe /stext "C:\Users\Admin\AppData\Local\Temp\vseoa"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:1456
- - C:\Users\Admin\AppData\Local\acceptancy\turbinals.exe
    C:\Users\Admin\AppData\Local\acceptancy\turbinals.exe /stext "C:\Users\Admin\AppData\Local\Temp\gujgbcow"
    3⤵
    - Executes dropped EXE
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:1200
- - C:\Users\Admin\AppData\Local\acceptancy\turbinals.exe
    C:\Users\Admin\AppData\Local\acceptancy\turbinals.exe /stext "C:\Users\Admin\AppData\Local\Temp\iopzcuzprbq"
    3⤵
    - Executes dropped EXE
    PID:4280
- - C:\Users\Admin\AppData\Local\acceptancy\turbinals.exe
    C:\Users\Admin\AppData\Local\acceptancy\turbinals.exe /stext "C:\Users\Admin\AppData\Local\Temp\iopzcuzprbq"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:5104

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
90b06d71afe53911b1de468beca7b9a1

SHA1
b4ddb06ffc91d6bfd09dc0b76ee98fe8ea305acc

SHA256
6dabafa0e9b19c4df176c1d1616e946725e80eb8fbb703749707b9953a2d1fa2

SHA512
0f37df15a5bb91a14112e71ea2898586bc42a971d9b30a33f8b5af983dd6d4ec79a6f8b44bbf95f8ee3a307b4848a46e0aa3bab7dd5b43fb8104e34c8171fdf1

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

Filesize
481KB

MD5
1d91eeebb3b92b76f541713ef2bfd0ee

SHA1
05a109daafce3d39d6fb3b9e747614a1531f2890

SHA256
206627c14f57b9b6ce47b972da9538c1fc4e941626b803abe5c852e54f309795

SHA512
c55bc96b3de8722e89217116a8b6959857c1beb822bd95284789513b5ff88ca6ef4124156f7d212488249083505268cf68ce59da729dd3b7378b030c89e98489

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

Filesize
4KB

MD5
16dfb23eaa7972c59c36fcbc0946093b

SHA1
1e9e3ff83a05131575f67e202d352709205f20f8

SHA256
36c49c94327c8cadcad4c0d2b3a8f5162fc7bb86624923484476c5f7b960bc4c

SHA512
a8b38b5e7bf886b78c5c7f01234b44647a252d4dfbcc06c99b863f8e160e3cfc151b2a83b8b49e09d13e8547419467da4bffbb8dee5fc6740032eb7c839d89dc

Download Submit
C:\Users\Admin\AppData\Local\acceptancy\turbinals.exe

Filesize
854KB

MD5
876f47f33c5975497c15bf24d50952b5

SHA1
a47579ea0e5d47ceb89cbb3450f4c482768a0bf8

SHA256
49e8a1f12fb5202470604efe01c0d60949d20d302a76aed85b2a049e91266366

SHA512
7346f82c0c7065d2de4ec5d5747235ce0ada6e799e6cf461a57ce15969ccd0bf92bf7d5efb2e5b57ad4be0defd3a716bdb6a8c609e0abbe0fb3832f5cfbfd6c3

Download Submit
memory/1200-48-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1200-52-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1200-54-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1200-55-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1200-45-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1456-63-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1456-39-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1456-43-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1456-44-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1456-42-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3260-60-0x00000000008D0000-0x0000000000AA8000-memory.dmp

Filesize
1.8MB

Download
memory/3260-11-0x00000000008D0000-0x0000000000AA8000-memory.dmp

Filesize
1.8MB

Download
memory/3260-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3260-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3260-31-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3260-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3260-30-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3260-119-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3260-120-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3260-61-0x00000000013F0000-0x00000000017F0000-memory.dmp

Filesize
4.0MB

Download
memory/3260-109-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3260-108-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3260-29-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3260-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3260-27-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3260-22-0x00000000013F0000-0x00000000017F0000-memory.dmp

Filesize
4.0MB

Download
memory/3260-98-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3260-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3260-65-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3260-69-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3260-68-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3260-70-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3260-75-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3260-76-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3260-97-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3260-86-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3260-87-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4804-7-0x00000000012A0000-0x00000000016A0000-memory.dmp

Filesize
4.0MB

Download
memory/4804-13-0x0000000000EE0000-0x00000000010B8000-memory.dmp

Filesize
1.8MB

Download
memory/4804-0-0x0000000000EE0000-0x00000000010B8000-memory.dmp

Filesize
1.8MB

Download
memory/5104-56-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/5104-58-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/5104-59-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download