remcos | 5c8ef3cc03f446dfd1a1438dc45c81f3cd16679e04a19d85b9318692429a8239

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
11/02/2025, 14:07

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General

Target

PaymentIssueINV-202578_PmtRef_47734v8.exe
Size

620KB
MD5

c61384f6fa6286ff89e1f446cc25adb3
SHA1

3bf45b971bd7dc54c1eaa9f2c55d58c64ca7913e
SHA256

5c8ef3cc03f446dfd1a1438dc45c81f3cd16679e04a19d85b9318692429a8239
SHA512

576ec78e6b5f05912ee448f493c51332198f37166646abef36ca77880816c2ba7850ee57ca844b276e393804f5307bc4198805b9d6748e29dd747b8288ea86d7
SSDEEP

12288:uNvQ534LijMVuiZQ7hPGXC6TR4kliDxv:uNYhLv3NGXRR4Rdv

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
behavioral1/memory/2860-80-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/2720-79-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/740-86-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/2860-80-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/2720-79-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Executes dropped EXE 5 IoCs

pid	Process
2748	googlegroupaccount.exe
2876	googlegroupaccount.exe
2720	googlegroupaccount.exe
2860	googlegroupaccount.exe
740	googlegroupaccount.exe

Loads dropped DLL 5 IoCs

pid	Process
2532	PaymentIssueINV-202578_PmtRef_47734v8.exe
2748	googlegroupaccount.exe
2876	googlegroupaccount.exe
2876	googlegroupaccount.exe
2876	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-1-5-21-3692679935-4019334568-335155002-1000\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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc-1MDOQC = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\googlegroupaccount\\googlegroupaccount.exe\""	PaymentIssueINV-202578_PmtRef_47734v8.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-1MDOQC = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\googlegroupaccount\\googlegroupaccount.exe\""	PaymentIssueINV-202578_PmtRef_47734v8.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\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 1956 set thread context of 2532	1956	PaymentIssueINV-202578_PmtRef_47734v8.exe	31
PID 2748 set thread context of 2876	2748	googlegroupaccount.exe	33
PID 2876 set thread context of 2720	2876	googlegroupaccount.exe	35
PID 2876 set thread context of 2860	2876	googlegroupaccount.exe	36
PID 2876 set thread context of 740	2876	googlegroupaccount.exe	37

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	PaymentIssueINV-202578_PmtRef_47734v8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PaymentIssueINV-202578_PmtRef_47734v8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	googlegroupaccount.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2720	googlegroupaccount.exe
2720	googlegroupaccount.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
2876	googlegroupaccount.exe
2876	googlegroupaccount.exe
2876	googlegroupaccount.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	740	googlegroupaccount.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2876	googlegroupaccount.exe

Suspicious use of WriteProcessMemory 41 IoCs

description	pid	Process	procid_target
PID 1956 wrote to memory of 2532	1956	PaymentIssueINV-202578_PmtRef_47734v8.exe	31
PID 1956 wrote to memory of 2532	1956	PaymentIssueINV-202578_PmtRef_47734v8.exe	31
PID 1956 wrote to memory of 2532	1956	PaymentIssueINV-202578_PmtRef_47734v8.exe	31
PID 1956 wrote to memory of 2532	1956	PaymentIssueINV-202578_PmtRef_47734v8.exe	31
PID 1956 wrote to memory of 2532	1956	PaymentIssueINV-202578_PmtRef_47734v8.exe	31
PID 1956 wrote to memory of 2532	1956	PaymentIssueINV-202578_PmtRef_47734v8.exe	31
PID 1956 wrote to memory of 2532	1956	PaymentIssueINV-202578_PmtRef_47734v8.exe	31
PID 1956 wrote to memory of 2532	1956	PaymentIssueINV-202578_PmtRef_47734v8.exe	31
PID 1956 wrote to memory of 2532	1956	PaymentIssueINV-202578_PmtRef_47734v8.exe	31
PID 1956 wrote to memory of 2532	1956	PaymentIssueINV-202578_PmtRef_47734v8.exe	31
PID 1956 wrote to memory of 2532	1956	PaymentIssueINV-202578_PmtRef_47734v8.exe	31
PID 2532 wrote to memory of 2748	2532	PaymentIssueINV-202578_PmtRef_47734v8.exe	32
PID 2532 wrote to memory of 2748	2532	PaymentIssueINV-202578_PmtRef_47734v8.exe	32
PID 2532 wrote to memory of 2748	2532	PaymentIssueINV-202578_PmtRef_47734v8.exe	32
PID 2532 wrote to memory of 2748	2532	PaymentIssueINV-202578_PmtRef_47734v8.exe	32
PID 2748 wrote to memory of 2876	2748	googlegroupaccount.exe	33
PID 2748 wrote to memory of 2876	2748	googlegroupaccount.exe	33
PID 2748 wrote to memory of 2876	2748	googlegroupaccount.exe	33
PID 2748 wrote to memory of 2876	2748	googlegroupaccount.exe	33
PID 2748 wrote to memory of 2876	2748	googlegroupaccount.exe	33
PID 2748 wrote to memory of 2876	2748	googlegroupaccount.exe	33
PID 2748 wrote to memory of 2876	2748	googlegroupaccount.exe	33
PID 2748 wrote to memory of 2876	2748	googlegroupaccount.exe	33
PID 2748 wrote to memory of 2876	2748	googlegroupaccount.exe	33
PID 2748 wrote to memory of 2876	2748	googlegroupaccount.exe	33
PID 2748 wrote to memory of 2876	2748	googlegroupaccount.exe	33
PID 2876 wrote to memory of 2720	2876	googlegroupaccount.exe	35
PID 2876 wrote to memory of 2720	2876	googlegroupaccount.exe	35
PID 2876 wrote to memory of 2720	2876	googlegroupaccount.exe	35
PID 2876 wrote to memory of 2720	2876	googlegroupaccount.exe	35
PID 2876 wrote to memory of 2720	2876	googlegroupaccount.exe	35
PID 2876 wrote to memory of 2860	2876	googlegroupaccount.exe	36
PID 2876 wrote to memory of 2860	2876	googlegroupaccount.exe	36
PID 2876 wrote to memory of 2860	2876	googlegroupaccount.exe	36
PID 2876 wrote to memory of 2860	2876	googlegroupaccount.exe	36
PID 2876 wrote to memory of 2860	2876	googlegroupaccount.exe	36
PID 2876 wrote to memory of 740	2876	googlegroupaccount.exe	37
PID 2876 wrote to memory of 740	2876	googlegroupaccount.exe	37
PID 2876 wrote to memory of 740	2876	googlegroupaccount.exe	37
PID 2876 wrote to memory of 740	2876	googlegroupaccount.exe	37
PID 2876 wrote to memory of 740	2876	googlegroupaccount.exe	37

C:\Users\Admin\AppData\Local\Temp\PaymentIssueINV-202578_PmtRef_47734v8.exe
"C:\Users\Admin\AppData\Local\Temp\PaymentIssueINV-202578_PmtRef_47734v8.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1956
- C:\Users\Admin\AppData\Local\Temp\PaymentIssueINV-202578_PmtRef_47734v8.exe
  "C:\Users\Admin\AppData\Local\Temp\PaymentIssueINV-202578_PmtRef_47734v8.exe"
  2⤵
  - Loads dropped DLL
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2532
- - C:\Users\Admin\AppData\Local\Temp\googlegroupaccount\googlegroupaccount.exe
    "C:\Users\Admin\AppData\Local\Temp\googlegroupaccount\googlegroupaccount.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2748
  - - C:\Users\Admin\AppData\Local\Temp\googlegroupaccount\googlegroupaccount.exe
      "C:\Users\Admin\AppData\Local\Temp\googlegroupaccount\googlegroupaccount.exe"
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      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:2876
    - - 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\kxpl"
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        
        PID:2720
    - - 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\msuedvs"
        5⤵
        Executes dropped EXE
        Accesses Microsoft Outlook accounts
        System Location Discovery: System Language Discovery
        
        PID:2860
    - - 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\wuiodollmk"
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious use of AdjustPrivilegeToken
        
        PID:740

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

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
e87f66d1a2861c08b236717b7b6ede78

SHA1
d08fccb618402d697e6e50bf6662add4556cad29

SHA256
c70406e351bbaaaf6594d582e19c93b5c0d665939a3e9db0f8631f58bc069560

SHA512
dfd339065ae0d78862f4ff2bbf99b9de7d2e990f258de5c902805642291a857fe3b158670604688fba3b0957a30dd886814fa7f58ad49467a69fcd1acd8e902e

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

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

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

Filesize
620KB

MD5
c61384f6fa6286ff89e1f446cc25adb3

SHA1
3bf45b971bd7dc54c1eaa9f2c55d58c64ca7913e

SHA256
5c8ef3cc03f446dfd1a1438dc45c81f3cd16679e04a19d85b9318692429a8239

SHA512
576ec78e6b5f05912ee448f493c51332198f37166646abef36ca77880816c2ba7850ee57ca844b276e393804f5307bc4198805b9d6748e29dd747b8288ea86d7

Download Submit
memory/740-82-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/740-86-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/740-85-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1956-1-0x0000000000220000-0x00000000002C2000-memory.dmp

Filesize
648KB

Download
memory/1956-2-0x0000000074080000-0x000000007476E000-memory.dmp

Filesize
6.9MB

Download
memory/1956-0-0x000000007408E000-0x000000007408F000-memory.dmp

Filesize
4KB

Download
memory/1956-23-0x0000000074080000-0x000000007476E000-memory.dmp

Filesize
6.9MB

Download
memory/2532-5-0x00000000000F0000-0x0000000000170000-memory.dmp

Filesize
512KB

Download
memory/2532-10-0x00000000000F0000-0x0000000000170000-memory.dmp

Filesize
512KB

Download
memory/2532-7-0x00000000000F0000-0x0000000000170000-memory.dmp

Filesize
512KB

Download
memory/2532-17-0x00000000000F0000-0x0000000000170000-memory.dmp

Filesize
512KB

Download
memory/2532-13-0x00000000000F0000-0x0000000000170000-memory.dmp

Filesize
512KB

Download
memory/2532-9-0x00000000000F0000-0x0000000000170000-memory.dmp

Filesize
512KB

Download
memory/2532-3-0x00000000000F0000-0x0000000000170000-memory.dmp

Filesize
512KB

Download
memory/2532-21-0x00000000000F0000-0x0000000000170000-memory.dmp

Filesize
512KB

Download
memory/2532-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2532-4-0x00000000000F0000-0x0000000000170000-memory.dmp

Filesize
512KB

Download
memory/2720-79-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2720-70-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2720-76-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2748-30-0x000000007317E000-0x000000007317F000-memory.dmp

Filesize
4KB

Download
memory/2748-52-0x0000000073170000-0x000000007385E000-memory.dmp

Filesize
6.9MB

Download
memory/2748-32-0x0000000073170000-0x000000007385E000-memory.dmp

Filesize
6.9MB

Download
memory/2748-31-0x0000000000A10000-0x0000000000AB2000-memory.dmp

Filesize
648KB

Download
memory/2860-73-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2860-74-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2860-78-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2860-80-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2876-53-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2876-51-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2876-56-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2876-64-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2876-55-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2876-54-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2876-63-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2876-57-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2876-58-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2876-65-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2876-40-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2876-45-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2876-47-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2876-50-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2876-93-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2876-97-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2876-96-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2876-99-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2876-101-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2876-102-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download