remcos | 1744bcc45c4af593d5f3a72c972bc86d1158fb3408fe03db2d80d28b2c51d7c8

Resubmissions

17/02/2025, 13:50

250217-q5qthszjgm 10

17/02/2025, 13:26

250217-qpzrgszjar 10

Analysis

max time kernel
148s
max time network
142s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
17/02/2025, 13:26

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Report Analysis Logs

General

Target

Windows_Security_Patch_KB5021130.exe
Size

618KB
MD5

4b7cb7621606abd6ffb6d38bafafb8e9
SHA1

831c1c044cdf6515ce3444444242015e8b52271f
SHA256

1744bcc45c4af593d5f3a72c972bc86d1158fb3408fe03db2d80d28b2c51d7c8
SHA512

98437691db7c50e50ece2de7caffddfe6a5bcb17af69754377bfbb195865a1362df6e911dfd6b7c9ebb17f98fae27c743a8518dc9348bcc10962f53e87e89d3a
SSDEEP

12288:BrtxWWIHuw2W41RfGx6UL7Uhd9BKcaQID8G3e3JgFaX:BanHubW4DfGUtKcadQ3JO0

Score

10^/10

remcos googlegroupaccount2 collection discovery persistence rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

googlegroupaccount2

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
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
googlegroupaccount
mouse_option
false
mutex
Rmc-3UY7X7
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/1724-74-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/1112-79-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/2632-80-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/1724-74-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/1112-79-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Executes dropped EXE 5 IoCs

pid	Process
2144	googlegroupaccount.exe
2800	googlegroupaccount.exe
1112	googlegroupaccount.exe
1724	googlegroupaccount.exe
2632	googlegroupaccount.exe

Loads dropped DLL 2 IoCs

pid	Process
1052	Windows_Security_Patch_KB5021130.exe
2144	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-1-5-21-3290804112-2823094203-3137964600-1000\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-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc-3UY7X7 = "\"C:\\Users\\Admin\\AppData\\Roaming\\googlegroupaccount\\googlegroupaccount.exe\""	googlegroupaccount.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-3UY7X7 = "\"C:\\Users\\Admin\\AppData\\Roaming\\googlegroupaccount\\googlegroupaccount.exe\""	googlegroupaccount.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc-3UY7X7 = "\"C:\\Users\\Admin\\AppData\\Roaming\\googlegroupaccount\\googlegroupaccount.exe\""	Windows_Security_Patch_KB5021130.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-3UY7X7 = "\"C:\\Users\\Admin\\AppData\\Roaming\\googlegroupaccount\\googlegroupaccount.exe\""	Windows_Security_Patch_KB5021130.exe

Suspicious use of SetThreadContext 5 IoCs

description	pid	Process	procid_target
PID 1548 set thread context of 1052	1548	Windows_Security_Patch_KB5021130.exe	31
PID 2144 set thread context of 2800	2144	googlegroupaccount.exe	33
PID 2800 set thread context of 1112	2800	googlegroupaccount.exe	34
PID 2800 set thread context of 1724	2800	googlegroupaccount.exe	35
PID 2800 set thread context of 2632	2800	googlegroupaccount.exe	36

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	Windows_Security_Patch_KB5021130.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Windows_Security_Patch_KB5021130.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	googlegroupaccount.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	googlegroupaccount.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1112	googlegroupaccount.exe
1112	googlegroupaccount.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
2800	googlegroupaccount.exe
2800	googlegroupaccount.exe
2800	googlegroupaccount.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2632	googlegroupaccount.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2800	googlegroupaccount.exe

Suspicious use of WriteProcessMemory 44 IoCs

description	pid	Process	procid_target
PID 1548 wrote to memory of 1052	1548	Windows_Security_Patch_KB5021130.exe	31
PID 1548 wrote to memory of 1052	1548	Windows_Security_Patch_KB5021130.exe	31
PID 1548 wrote to memory of 1052	1548	Windows_Security_Patch_KB5021130.exe	31
PID 1548 wrote to memory of 1052	1548	Windows_Security_Patch_KB5021130.exe	31
PID 1548 wrote to memory of 1052	1548	Windows_Security_Patch_KB5021130.exe	31
PID 1548 wrote to memory of 1052	1548	Windows_Security_Patch_KB5021130.exe	31
PID 1548 wrote to memory of 1052	1548	Windows_Security_Patch_KB5021130.exe	31
PID 1548 wrote to memory of 1052	1548	Windows_Security_Patch_KB5021130.exe	31
PID 1548 wrote to memory of 1052	1548	Windows_Security_Patch_KB5021130.exe	31
PID 1548 wrote to memory of 1052	1548	Windows_Security_Patch_KB5021130.exe	31
PID 1548 wrote to memory of 1052	1548	Windows_Security_Patch_KB5021130.exe	31
PID 1548 wrote to memory of 1052	1548	Windows_Security_Patch_KB5021130.exe	31
PID 1548 wrote to memory of 1052	1548	Windows_Security_Patch_KB5021130.exe	31
PID 1548 wrote to memory of 1052	1548	Windows_Security_Patch_KB5021130.exe	31
PID 1052 wrote to memory of 2144	1052	Windows_Security_Patch_KB5021130.exe	32
PID 1052 wrote to memory of 2144	1052	Windows_Security_Patch_KB5021130.exe	32
PID 1052 wrote to memory of 2144	1052	Windows_Security_Patch_KB5021130.exe	32
PID 1052 wrote to memory of 2144	1052	Windows_Security_Patch_KB5021130.exe	32
PID 2144 wrote to memory of 2800	2144	googlegroupaccount.exe	33
PID 2144 wrote to memory of 2800	2144	googlegroupaccount.exe	33
PID 2144 wrote to memory of 2800	2144	googlegroupaccount.exe	33
PID 2144 wrote to memory of 2800	2144	googlegroupaccount.exe	33
PID 2144 wrote to memory of 2800	2144	googlegroupaccount.exe	33
PID 2144 wrote to memory of 2800	2144	googlegroupaccount.exe	33
PID 2144 wrote to memory of 2800	2144	googlegroupaccount.exe	33
PID 2144 wrote to memory of 2800	2144	googlegroupaccount.exe	33
PID 2144 wrote to memory of 2800	2144	googlegroupaccount.exe	33
PID 2144 wrote to memory of 2800	2144	googlegroupaccount.exe	33
PID 2144 wrote to memory of 2800	2144	googlegroupaccount.exe	33
PID 2800 wrote to memory of 1112	2800	googlegroupaccount.exe	34
PID 2800 wrote to memory of 1112	2800	googlegroupaccount.exe	34
PID 2800 wrote to memory of 1112	2800	googlegroupaccount.exe	34
PID 2800 wrote to memory of 1112	2800	googlegroupaccount.exe	34
PID 2800 wrote to memory of 1112	2800	googlegroupaccount.exe	34
PID 2800 wrote to memory of 1724	2800	googlegroupaccount.exe	35
PID 2800 wrote to memory of 1724	2800	googlegroupaccount.exe	35
PID 2800 wrote to memory of 1724	2800	googlegroupaccount.exe	35
PID 2800 wrote to memory of 1724	2800	googlegroupaccount.exe	35
PID 2800 wrote to memory of 1724	2800	googlegroupaccount.exe	35
PID 2800 wrote to memory of 2632	2800	googlegroupaccount.exe	36
PID 2800 wrote to memory of 2632	2800	googlegroupaccount.exe	36
PID 2800 wrote to memory of 2632	2800	googlegroupaccount.exe	36
PID 2800 wrote to memory of 2632	2800	googlegroupaccount.exe	36
PID 2800 wrote to memory of 2632	2800	googlegroupaccount.exe	36

C:\Users\Admin\AppData\Local\Temp\Windows_Security_Patch_KB5021130.exe
"C:\Users\Admin\AppData\Local\Temp\Windows_Security_Patch_KB5021130.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1548
- C:\Users\Admin\AppData\Local\Temp\Windows_Security_Patch_KB5021130.exe
  "C:\Users\Admin\AppData\Local\Temp\Windows_Security_Patch_KB5021130.exe"
  2⤵
  - Loads dropped DLL
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1052
- - C:\Users\Admin\AppData\Roaming\googlegroupaccount\googlegroupaccount.exe
    "C:\Users\Admin\AppData\Roaming\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:2144
  - - C:\Users\Admin\AppData\Roaming\googlegroupaccount\googlegroupaccount.exe
      "C:\Users\Admin\AppData\Roaming\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:2800
    - - C:\Users\Admin\AppData\Roaming\googlegroupaccount\googlegroupaccount.exe
        
        C:\Users\Admin\AppData\Roaming\googlegroupaccount\googlegroupaccount.exe /stext "C:\Users\Admin\AppData\Local\Temp\vqmrkyewfrtawwkaroqnrhjxhffnmqsrbt"
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        
        PID:1112
    - - C:\Users\Admin\AppData\Roaming\googlegroupaccount\googlegroupaccount.exe
        
        C:\Users\Admin\AppData\Roaming\googlegroupaccount\googlegroupaccount.exe /stext "C:\Users\Admin\AppData\Local\Temp\gkrjlq"
        5⤵
        Executes dropped EXE
        Accesses Microsoft Outlook accounts
        System Location Discovery: System Language Discovery
        
        PID:1724
    - - C:\Users\Admin\AppData\Roaming\googlegroupaccount\googlegroupaccount.exe
        
        C:\Users\Admin\AppData\Roaming\googlegroupaccount\googlegroupaccount.exe /stext "C:\Users\Admin\AppData\Local\Temp\qmeuebzrhh"
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious use of AdjustPrivilegeToken
        
        PID:2632

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:\Users\Admin\AppData\Local\Temp\vqmrkyewfrtawwkaroqnrhjxhffnmqsrbt

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
\Users\Admin\AppData\Roaming\googlegroupaccount\googlegroupaccount.exe

Filesize
618KB

MD5
4b7cb7621606abd6ffb6d38bafafb8e9

SHA1
831c1c044cdf6515ce3444444242015e8b52271f

SHA256
1744bcc45c4af593d5f3a72c972bc86d1158fb3408fe03db2d80d28b2c51d7c8

SHA512
98437691db7c50e50ece2de7caffddfe6a5bcb17af69754377bfbb195865a1362df6e911dfd6b7c9ebb17f98fae27c743a8518dc9348bcc10962f53e87e89d3a

Download Submit
memory/1052-17-0x00000000001E0000-0x0000000000260000-memory.dmp

Filesize
512KB

Download
memory/1052-2-0x00000000001E0000-0x0000000000260000-memory.dmp

Filesize
512KB

Download
memory/1052-13-0x00000000001E0000-0x0000000000260000-memory.dmp

Filesize
512KB

Download
memory/1052-21-0x00000000001E0000-0x0000000000260000-memory.dmp

Filesize
512KB

Download
memory/1052-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1052-9-0x00000000001E0000-0x0000000000260000-memory.dmp

Filesize
512KB

Download
memory/1052-8-0x00000000001E0000-0x0000000000260000-memory.dmp

Filesize
512KB

Download
memory/1052-7-0x00000000001E0000-0x0000000000260000-memory.dmp

Filesize
512KB

Download
memory/1052-6-0x00000000001E0000-0x0000000000260000-memory.dmp

Filesize
512KB

Download
memory/1052-5-0x00000000001E0000-0x0000000000260000-memory.dmp

Filesize
512KB

Download
memory/1112-73-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1112-79-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1112-67-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1548-0-0x00000000745DE000-0x00000000745DF000-memory.dmp

Filesize
4KB

Download
memory/1548-1-0x0000000000130000-0x00000000001D2000-memory.dmp

Filesize
648KB

Download
memory/1548-4-0x00000000745D0000-0x0000000074CBE000-memory.dmp

Filesize
6.9MB

Download
memory/1548-57-0x00000000745D0000-0x0000000074CBE000-memory.dmp

Filesize
6.9MB

Download
memory/1724-69-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1724-70-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1724-74-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1724-72-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2144-32-0x00000000736C0000-0x0000000073DAE000-memory.dmp

Filesize
6.9MB

Download
memory/2144-30-0x0000000000B90000-0x0000000000C32000-memory.dmp

Filesize
648KB

Download
memory/2144-53-0x00000000736C0000-0x0000000073DAE000-memory.dmp

Filesize
6.9MB

Download
memory/2144-29-0x00000000736CE000-0x00000000736CF000-memory.dmp

Filesize
4KB

Download
memory/2632-80-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2632-76-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2632-78-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2800-51-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2800-63-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2800-58-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2800-56-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2800-65-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2800-55-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2800-50-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2800-52-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2800-61-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2800-59-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2800-46-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2800-41-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2800-86-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2800-90-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2800-89-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2800-91-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2800-93-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2800-92-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2800-95-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download