remcos | b1dd46f1ff62dea312ca3fa6f2bb5c23161971fcd71ce23fa8bf921501384f05

Analysis

max time kernel
149s
max time network
149s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
04-02-2025 18:33

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General

Target

vwfGI75DCjPX5gK.exe
Size

1.1MB
MD5

1692cdb5ee56b3f17e1aa1514c8dd3e8
SHA1

6323c53db834380949ec820c2964bbe079662ad4
SHA256

0ee949c974ffb77c9c61400f423355b9670d0b5918a85331bb34b15fa6a1d20b
SHA512

48844ff2e284010c2f33d8a1837413766d16b6cbf5d3b24035ded467c8ca4313be3db0a42e5a8c680d8d198e2ea6782067df502d9e465e19aa07fa58bf5914ee
SSDEEP

24576:BAorweYxrXqa1dNMQd+TtnSXYv+Nd+Vp3obdg3vb6u:BvwFX91zMhTtnJmH+zobdS6u

Score

10^/10

remcos remotehost collection discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

tjwpn04kn.localto.net:2247

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
hytg
mouse_option
false
mutex
Rmc-JD0XH1
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/1700-58-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/3012-54-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/2968-53-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/3012-54-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/2968-53-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2408	powershell.exe
2136	powershell.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	vbc.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2328 set thread context of 2952	2328	vwfGI75DCjPX5gK.exe	37
PID 2952 set thread context of 2968	2952	vbc.exe	39
PID 2952 set thread context of 3012	2952	vbc.exe	40
PID 2952 set thread context of 1700	2952	vbc.exe	41

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 8 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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vwfGI75DCjPX5gK.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2784	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2328	vwfGI75DCjPX5gK.exe
2136	powershell.exe
2408	powershell.exe
2328	vwfGI75DCjPX5gK.exe
2968	vbc.exe
2968	vbc.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
2952	vbc.exe
2952	vbc.exe
2952	vbc.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2328	vwfGI75DCjPX5gK.exe
Token: SeDebugPrivilege	2136	powershell.exe
Token: SeDebugPrivilege	2408	powershell.exe
Token: SeDebugPrivilege	1700	vbc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2952	vbc.exe

Suspicious use of WriteProcessMemory 38 IoCs

description	pid	Process	procid_target
PID 2328 wrote to memory of 2408	2328	vwfGI75DCjPX5gK.exe	31
PID 2328 wrote to memory of 2408	2328	vwfGI75DCjPX5gK.exe	31
PID 2328 wrote to memory of 2408	2328	vwfGI75DCjPX5gK.exe	31
PID 2328 wrote to memory of 2408	2328	vwfGI75DCjPX5gK.exe	31
PID 2328 wrote to memory of 2136	2328	vwfGI75DCjPX5gK.exe	33
PID 2328 wrote to memory of 2136	2328	vwfGI75DCjPX5gK.exe	33
PID 2328 wrote to memory of 2136	2328	vwfGI75DCjPX5gK.exe	33
PID 2328 wrote to memory of 2136	2328	vwfGI75DCjPX5gK.exe	33
PID 2328 wrote to memory of 2784	2328	vwfGI75DCjPX5gK.exe	34
PID 2328 wrote to memory of 2784	2328	vwfGI75DCjPX5gK.exe	34
PID 2328 wrote to memory of 2784	2328	vwfGI75DCjPX5gK.exe	34
PID 2328 wrote to memory of 2784	2328	vwfGI75DCjPX5gK.exe	34
PID 2328 wrote to memory of 2952	2328	vwfGI75DCjPX5gK.exe	37
PID 2328 wrote to memory of 2952	2328	vwfGI75DCjPX5gK.exe	37
PID 2328 wrote to memory of 2952	2328	vwfGI75DCjPX5gK.exe	37
PID 2328 wrote to memory of 2952	2328	vwfGI75DCjPX5gK.exe	37
PID 2328 wrote to memory of 2952	2328	vwfGI75DCjPX5gK.exe	37
PID 2328 wrote to memory of 2952	2328	vwfGI75DCjPX5gK.exe	37
PID 2328 wrote to memory of 2952	2328	vwfGI75DCjPX5gK.exe	37
PID 2328 wrote to memory of 2952	2328	vwfGI75DCjPX5gK.exe	37
PID 2328 wrote to memory of 2952	2328	vwfGI75DCjPX5gK.exe	37
PID 2328 wrote to memory of 2952	2328	vwfGI75DCjPX5gK.exe	37
PID 2328 wrote to memory of 2952	2328	vwfGI75DCjPX5gK.exe	37
PID 2952 wrote to memory of 2968	2952	vbc.exe	39
PID 2952 wrote to memory of 2968	2952	vbc.exe	39
PID 2952 wrote to memory of 2968	2952	vbc.exe	39
PID 2952 wrote to memory of 2968	2952	vbc.exe	39
PID 2952 wrote to memory of 2968	2952	vbc.exe	39
PID 2952 wrote to memory of 3012	2952	vbc.exe	40
PID 2952 wrote to memory of 3012	2952	vbc.exe	40
PID 2952 wrote to memory of 3012	2952	vbc.exe	40
PID 2952 wrote to memory of 3012	2952	vbc.exe	40
PID 2952 wrote to memory of 3012	2952	vbc.exe	40
PID 2952 wrote to memory of 1700	2952	vbc.exe	41
PID 2952 wrote to memory of 1700	2952	vbc.exe	41
PID 2952 wrote to memory of 1700	2952	vbc.exe	41
PID 2952 wrote to memory of 1700	2952	vbc.exe	41
PID 2952 wrote to memory of 1700	2952	vbc.exe	41

C:\Users\Admin\AppData\Local\Temp\vwfGI75DCjPX5gK.exe
"C:\Users\Admin\AppData\Local\Temp\vwfGI75DCjPX5gK.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2328
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\vwfGI75DCjPX5gK.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2408
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\ECbBoeJPQbIy.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2136
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ECbBoeJPQbIy" /XML "C:\Users\Admin\AppData\Local\Temp\tmpFD81.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2784
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2952
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\psekgsw"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:2968
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\zmjvhkhyal"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:3012
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\bpoozvsaotabs"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:1700

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\hytg\logs.dat

Filesize
144B

MD5
2f46cfd13c86fa732d5fe2c26d35332d

SHA1
df9fdef51c8a520709f49ba91a467bdeb613fa3d

SHA256
0fcb7124803ad8932cd701ebaa0ece377315d3f6afa59a7414bc83ce455faa15

SHA512
4a6186dbd4b62439983ac67f23d6d1dafa1d17e13bd0b143dc060c7d3c5e8f09051c0888ff781a11afb82099a119216db71c7f0a3b529d67228f35300453b42c

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

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpFD81.tmp

Filesize
1KB

MD5
77ef20914fbb86a4315c5dae80f19d56

SHA1
c615f8975617f52c0a900fa8eb6ff58eaf82785d

SHA256
9a5361bfa00d557b6e200e7ad7e97a0a775b49a5cedec2bff1751de7d473d485

SHA512
b581ce42bb5868291c97c50ee317c6edf89ce12b274a3bee37d95f65e2055936934c2e11434e915395f381e9fc39f1d12d9725c620409829308fd42b0a56d773

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

Filesize
7KB

MD5
2d7a453f017c045c94b2097521ff9cc2

SHA1
949ffd9322c7b7476e45d569bb649d0d86eb0aad

SHA256
3b27d81859ff702c1c7c08e12336b53fe397b81217771c7e7505548669adf52a

SHA512
bc5684c653f92538fe037e37c95e227dfadd92004d3c08f334d491d7c8e26598314cc4a842cff2b904fa12e8fe6c85faf1cdb5c48d932f560c0d40db29716112

Download Submit
memory/1700-56-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1700-58-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1700-57-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2328-3-0x0000000000510000-0x000000000052E000-memory.dmp

Filesize
120KB

Download
memory/2328-6-0x000000000A3B0000-0x000000000A474000-memory.dmp

Filesize
784KB

Download
memory/2328-5-0x00000000748C0000-0x0000000074FAE000-memory.dmp

Filesize
6.9MB

Download
memory/2328-4-0x00000000748CE000-0x00000000748CF000-memory.dmp

Filesize
4KB

Download
memory/2328-38-0x00000000748C0000-0x0000000074FAE000-memory.dmp

Filesize
6.9MB

Download
memory/2328-2-0x00000000748C0000-0x0000000074FAE000-memory.dmp

Filesize
6.9MB

Download
memory/2328-1-0x0000000000380000-0x0000000000494000-memory.dmp

Filesize
1.1MB

Download
memory/2328-0-0x00000000748CE000-0x00000000748CF000-memory.dmp

Filesize
4KB

Download
memory/2952-43-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2952-65-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2952-32-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2952-23-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2952-39-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2952-27-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2952-37-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2952-40-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2952-41-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2952-29-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2952-42-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2952-45-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2952-97-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2952-90-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2952-31-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2952-89-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2952-81-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2952-21-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2952-19-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2952-33-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2952-73-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2952-74-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2952-70-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2952-34-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2952-68-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2952-25-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2952-69-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2968-53-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2968-51-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2968-48-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2968-47-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/3012-52-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3012-54-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3012-49-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/3012-50-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download