remcos | f9a75f67ab3b4e7fa308bdac0ab7a6c40f0189fb3d95cfdb455023080a89c517

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20250129-en
resource tags

arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system
submitted
31-01-2025 12:14

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General

Target

Vendor Questionnaire and EOI.exe
Size

610KB
MD5

d0627ad0019378cd5a6f23eb4a0f1c8f
SHA1

9626f6c80883b8203b299a1d751e136bf5e16e54
SHA256

f9a75f67ab3b4e7fa308bdac0ab7a6c40f0189fb3d95cfdb455023080a89c517
SHA512

8b6a2d8c71a2232f07c17d6e1e67e34945cbf08dad2426112ace21c4d808fdbf05adc44e78be742067130255af819d97cae93bf3c68f05da5c88777b6a8bbdd8
SSDEEP

12288:p98UWQxHvxTMN0X4YcXGw9CIOmUwuTRQXgz3sK7hvhO7G:paQxG3YWGkCIhUwuTRQwrl9e

Score

10^/10

remcos googlegroupaccount collection discovery persistence rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

googlegroupaccount

107.174.65.146:1194

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
googlegroupaccount.exe
copy_folder
googlegroupaccount
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
true
install_path
%Temp%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-1MDOQC
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 3 IoCs

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

resource	yara_rule
behavioral2/memory/2272-56-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/1276-55-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/3668-54-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/1276-55-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/3668-54-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4003209913-3868522715-854928974-1000\Control Panel\International\Geo\Nation	Vendor Questionnaire and EOI.exe

Executes dropped EXE 6 IoCs

pid	Process
3472	googlegroupaccount.exe
1720	googlegroupaccount.exe
2360	googlegroupaccount.exe
3668	googlegroupaccount.exe
1276	googlegroupaccount.exe
2272	googlegroupaccount.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-1-5-21-4003209913-3868522715-854928974-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	googlegroupaccount.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4003209913-3868522715-854928974-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Rmc-1MDOQC = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\googlegroupaccount\\googlegroupaccount.exe\""	Vendor Questionnaire and EOI.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-1MDOQC = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\googlegroupaccount\\googlegroupaccount.exe\""	Vendor Questionnaire and EOI.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4003209913-3868522715-854928974-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Rmc-1MDOQC = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\googlegroupaccount\\googlegroupaccount.exe\""	googlegroupaccount.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-1MDOQC = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\googlegroupaccount\\googlegroupaccount.exe\""	googlegroupaccount.exe

Suspicious use of SetThreadContext 5 IoCs

description	pid	Process	procid_target
PID 4744 set thread context of 1168	4744	Vendor Questionnaire and EOI.exe	86
PID 3472 set thread context of 1720	3472	googlegroupaccount.exe	88
PID 1720 set thread context of 3668	1720	googlegroupaccount.exe	90
PID 1720 set thread context of 1276	1720	googlegroupaccount.exe	91
PID 1720 set thread context of 2272	1720	googlegroupaccount.exe	92

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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	googlegroupaccount.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	googlegroupaccount.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	googlegroupaccount.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	googlegroupaccount.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Vendor Questionnaire and EOI.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Vendor Questionnaire and EOI.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	googlegroupaccount.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3668	googlegroupaccount.exe
3668	googlegroupaccount.exe
2272	googlegroupaccount.exe
2272	googlegroupaccount.exe
3668	googlegroupaccount.exe
3668	googlegroupaccount.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
1720	googlegroupaccount.exe
1720	googlegroupaccount.exe
1720	googlegroupaccount.exe
1720	googlegroupaccount.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2272	googlegroupaccount.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1720	googlegroupaccount.exe

Suspicious use of WriteProcessMemory 38 IoCs

description	pid	Process	procid_target
PID 4744 wrote to memory of 1168	4744	Vendor Questionnaire and EOI.exe	86
PID 4744 wrote to memory of 1168	4744	Vendor Questionnaire and EOI.exe	86
PID 4744 wrote to memory of 1168	4744	Vendor Questionnaire and EOI.exe	86
PID 4744 wrote to memory of 1168	4744	Vendor Questionnaire and EOI.exe	86
PID 4744 wrote to memory of 1168	4744	Vendor Questionnaire and EOI.exe	86
PID 4744 wrote to memory of 1168	4744	Vendor Questionnaire and EOI.exe	86
PID 4744 wrote to memory of 1168	4744	Vendor Questionnaire and EOI.exe	86
PID 4744 wrote to memory of 1168	4744	Vendor Questionnaire and EOI.exe	86
PID 4744 wrote to memory of 1168	4744	Vendor Questionnaire and EOI.exe	86
PID 4744 wrote to memory of 1168	4744	Vendor Questionnaire and EOI.exe	86
PID 1168 wrote to memory of 3472	1168	Vendor Questionnaire and EOI.exe	87
PID 1168 wrote to memory of 3472	1168	Vendor Questionnaire and EOI.exe	87
PID 1168 wrote to memory of 3472	1168	Vendor Questionnaire and EOI.exe	87
PID 3472 wrote to memory of 1720	3472	googlegroupaccount.exe	88
PID 3472 wrote to memory of 1720	3472	googlegroupaccount.exe	88
PID 3472 wrote to memory of 1720	3472	googlegroupaccount.exe	88
PID 3472 wrote to memory of 1720	3472	googlegroupaccount.exe	88
PID 3472 wrote to memory of 1720	3472	googlegroupaccount.exe	88
PID 3472 wrote to memory of 1720	3472	googlegroupaccount.exe	88
PID 3472 wrote to memory of 1720	3472	googlegroupaccount.exe	88
PID 3472 wrote to memory of 1720	3472	googlegroupaccount.exe	88
PID 3472 wrote to memory of 1720	3472	googlegroupaccount.exe	88
PID 3472 wrote to memory of 1720	3472	googlegroupaccount.exe	88
PID 1720 wrote to memory of 2360	1720	googlegroupaccount.exe	89
PID 1720 wrote to memory of 2360	1720	googlegroupaccount.exe	89
PID 1720 wrote to memory of 2360	1720	googlegroupaccount.exe	89
PID 1720 wrote to memory of 3668	1720	googlegroupaccount.exe	90
PID 1720 wrote to memory of 3668	1720	googlegroupaccount.exe	90
PID 1720 wrote to memory of 3668	1720	googlegroupaccount.exe	90
PID 1720 wrote to memory of 3668	1720	googlegroupaccount.exe	90
PID 1720 wrote to memory of 1276	1720	googlegroupaccount.exe	91
PID 1720 wrote to memory of 1276	1720	googlegroupaccount.exe	91
PID 1720 wrote to memory of 1276	1720	googlegroupaccount.exe	91
PID 1720 wrote to memory of 1276	1720	googlegroupaccount.exe	91
PID 1720 wrote to memory of 2272	1720	googlegroupaccount.exe	92
PID 1720 wrote to memory of 2272	1720	googlegroupaccount.exe	92
PID 1720 wrote to memory of 2272	1720	googlegroupaccount.exe	92
PID 1720 wrote to memory of 2272	1720	googlegroupaccount.exe	92

C:\Users\Admin\AppData\Local\Temp\Vendor Questionnaire and EOI.exe
"C:\Users\Admin\AppData\Local\Temp\Vendor Questionnaire and EOI.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4744
- C:\Users\Admin\AppData\Local\Temp\Vendor Questionnaire and EOI.exe
  "C:\Users\Admin\AppData\Local\Temp\Vendor Questionnaire and EOI.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1168
- - C:\Users\Admin\AppData\Local\Temp\googlegroupaccount\googlegroupaccount.exe
    "C:\Users\Admin\AppData\Local\Temp\googlegroupaccount\googlegroupaccount.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3472
  - - C:\Users\Admin\AppData\Local\Temp\googlegroupaccount\googlegroupaccount.exe
      "C:\Users\Admin\AppData\Local\Temp\googlegroupaccount\googlegroupaccount.exe"
      4⤵
      Executes dropped EXE
      Adds Run key to start application
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious behavior: MapViewOfSection
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:1720
    - - C:\Users\Admin\AppData\Local\Temp\googlegroupaccount\googlegroupaccount.exe
        
        C:\Users\Admin\AppData\Local\Temp\googlegroupaccount\googlegroupaccount.exe /stext "C:\Users\Admin\AppData\Local\Temp\gfrrlnx"
        5⤵
        Executes dropped EXE
        
        PID:2360
    - - C:\Users\Admin\AppData\Local\Temp\googlegroupaccount\googlegroupaccount.exe
        
        C:\Users\Admin\AppData\Local\Temp\googlegroupaccount\googlegroupaccount.exe /stext "C:\Users\Admin\AppData\Local\Temp\gfrrlnx"
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        
        PID:3668
    - - C:\Users\Admin\AppData\Local\Temp\googlegroupaccount\googlegroupaccount.exe
        
        C:\Users\Admin\AppData\Local\Temp\googlegroupaccount\googlegroupaccount.exe /stext "C:\Users\Admin\AppData\Local\Temp\qhekmfqbse"
        5⤵
        Executes dropped EXE
        Accesses Microsoft Outlook accounts
        System Location Discovery: System Language Discovery
        
        PID:1276
    - - C:\Users\Admin\AppData\Local\Temp\googlegroupaccount\googlegroupaccount.exe
        
        C:\Users\Admin\AppData\Local\Temp\googlegroupaccount\googlegroupaccount.exe /stext "C:\Users\Admin\AppData\Local\Temp\abjunyavgmfzs"
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:2272

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

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

Replay Monitor

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
aa760bbd52801db7b6af5037349eaf18

SHA1
59533d60302bb2eabdc5d3d61bba9faed3c06a0c

SHA256
0094ab5d7c1fc97647ba518b0f18ca5c06136f6c2decfb3c37cc3b5c3cd079fe

SHA512
5a4f5b00312086d2e318797d186d09ab8a2802cc41b0b56badd6c7eb7097cd7c11f2c442ee9e5e0b98a91be1880a82871331635ffca0f69fc0f64f5c2adc88bf

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

Filesize
4KB

MD5
f59f92591b8d57a95f1a5beb23a658d7

SHA1
6d26907d3d1ad1799f6bda6ba2c7db51f0e8d56d

SHA256
2a662290f17ef4bd2b908aea8ebcabeef63117955b5be1769425bdefdbad1b22

SHA512
b619288957ad69898e325207462e20cfa7bbf9b116ec5237da6fe47fef5450b1e9e040f1c60941b00bad9e9cb31f775c843f4d180f575643d6894f51548aa13b

Download Submit
C:\Users\Admin\AppData\Local\Temp\googlegroupaccount\googlegroupaccount.exe

Filesize
610KB

MD5
d0627ad0019378cd5a6f23eb4a0f1c8f

SHA1
9626f6c80883b8203b299a1d751e136bf5e16e54

SHA256
f9a75f67ab3b4e7fa308bdac0ab7a6c40f0189fb3d95cfdb455023080a89c517

SHA512
8b6a2d8c71a2232f07c17d6e1e67e34945cbf08dad2426112ace21c4d808fdbf05adc44e78be742067130255af819d97cae93bf3c68f05da5c88777b6a8bbdd8

Download Submit
memory/1168-5-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1168-3-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1168-7-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1168-8-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1168-21-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1276-47-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1276-52-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1276-55-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1720-65-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1720-70-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1720-106-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1720-28-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1720-105-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1720-32-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1720-29-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1720-35-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1720-36-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1720-37-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1720-38-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1720-40-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1720-42-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1720-43-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1720-98-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1720-97-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1720-90-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1720-89-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1720-82-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1720-81-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1720-74-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1720-73-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1720-26-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1720-66-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1720-62-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1720-67-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2272-49-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2272-51-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2272-56-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3472-22-0x0000000073D4E000-0x0000000073D4F000-memory.dmp

Filesize
4KB

Download
memory/3472-25-0x0000000073D40000-0x00000000744F0000-memory.dmp

Filesize
7.7MB

Download
memory/3472-34-0x0000000073D40000-0x00000000744F0000-memory.dmp

Filesize
7.7MB

Download
memory/3668-54-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3668-45-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3668-53-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4744-6-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/4744-9-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/4744-1-0x0000000000450000-0x00000000004F0000-memory.dmp

Filesize
640KB

Download
memory/4744-0-0x0000000074BFE000-0x0000000074BFF000-memory.dmp

Filesize
4KB

Download
memory/4744-2-0x00000000052C0000-0x0000000005864000-memory.dmp

Filesize
5.6MB

Download