Analysis
- max time kernel
149s - max time network
145s - platform
windows10-2004_x64 - resource
win10v2004-20260911-en - resource tags
- submitted
28/10/2026, 10:50
General
- Target Arrival Notice.vbs
- Size 132KB
- Sample261028-mxlytabx21
- SHA256 4703ad7b5ea835ca9c90bef70aae937eb4db88885cd618e0d201d50fb126f094
Malware Config
Extracted
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remcos
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RemoteHost
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103.83.86.178:2404
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audio_folder
MicRecords
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audio_path
ApplicationPath
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audio_record_time
5
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connect_delay
0
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connect_interval
1
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copy_file
remcos.exe
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copy_folder
Remcos
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delete_file
false
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hide_file
false
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hide_keylog_file
false
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install_flag
false
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keylog_crypt
false
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keylog_file
logs.dat
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keylog_flag
false
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keylog_folder
remcos
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mouse_option
false
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mutex
Rmc-EXKIG4
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screenshot_crypt
false
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screenshot_flag
false
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screenshot_folder
Screenshots
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screenshot_path
%AppData%
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screenshot_time
10
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take_screenshot_option
false
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take_screenshot_time
5
Signatures
- Family: Remcos
Remcos is a closed-source remote control and surveillance software.
- Badlisted process makes network request 3 IoCs
Network request originating from process or tool commonly abused by malware.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Accesses Microsoft Outlook profiles 1 TTPs 2 IoCs
- Contacts third-party web service commonly abused for C2 1 TTPs 3 IoCs
Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.
- Executes a VBScript file via the Windows Script Host. 1 TTPs 1 IoCs
- Suspicious use of NtCreateThreadExHideFromDebugger 1 TTPs 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 1 TTPs 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Executes a command shell one-liner 1 TTPs 1 IoCs
Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.
- Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
- System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 6 IoCs
- Suspicious behavior: MapViewOfSection 1 TTPs 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 7 IoCs
- outlook_office_path 1 IoCs
Processes
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C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Arrival Notice.vbs"1⤵
- Badlisted process makes network request
- Checks computer location settings
- Executes a VBScript file via the Windows Script Host.
- Reads the TCP/IP host and domain name from the registry
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /v:on /c echo ^%Besoves^% | !Sumachs! -2⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /S /D /c" echo %Besoves% "3⤵
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\??\c:\windows\syswow64\WindowsPowerShell\v1.0\powershell.exe"c:\windows\syswow64\WindowsPowerShell\v1.0\powershell.exe" -3⤵
- Badlisted process makes network request
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\backgroundtaskhost.exe"C:\Windows\SysWOW64\backgroundtaskhost.exe"4⤵
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C:\Windows\SysWOW64\backgroundtaskhost.exe"C:\Windows\SysWOW64\backgroundtaskhost.exe"4⤵
- Accesses Microsoft Outlook profiles
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
- outlook_office_path
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C:\Windows\SysWOW64\backgroundtaskhost.exe"C:\Windows\SysWOW64\backgroundtaskhost.exe"5⤵
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Network
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
2Visual Basic
1Windows Command Shell
1Replay Monitor
Loading Replay Monitor...
Downloads
Login Data For Account.tmp
__PSScriptPolicyTest_ytcbybz1.pys.ps1
memory/1628-20-0x0000000006920000-0x0000000006964000-memory.dmp
memory/1628-31-0x0000000008440000-0x0000000008445000-memory.dmp
memory/1628-8-0x0000000005CA0000-0x0000000005D06000-memory.dmp
memory/1628-9-0x0000000005D80000-0x0000000005DE6000-memory.dmp
memory/1628-6-0x0000000005570000-0x0000000005B98000-memory.dmp
memory/1628-17-0x0000000005E70000-0x00000000061C4000-memory.dmp
memory/1628-18-0x00000000063A0000-0x00000000063BE000-memory.dmp
memory/1628-19-0x00000000063E0000-0x000000000642C000-memory.dmp
memory/1628-4-0x0000000004EB0000-0x0000000004EC0000-memory.dmp
memory/1628-32-0x0000000008F70000-0x000000000E8F6000-memory.dmp
memory/1628-22-0x0000000007D90000-0x000000000840A000-memory.dmp
memory/1628-23-0x0000000007730000-0x000000000774A000-memory.dmp
memory/1628-24-0x0000000007960000-0x00000000079F6000-memory.dmp
memory/1628-25-0x0000000007900000-0x0000000007922000-memory.dmp
memory/1628-26-0x00000000089C0000-0x0000000008F64000-memory.dmp
memory/1628-27-0x0000000004EB0000-0x0000000004EC0000-memory.dmp
memory/1628-28-0x0000000004EB0000-0x0000000004EC0000-memory.dmp
memory/1628-30-0x0000000004EB0000-0x0000000004EC0000-memory.dmp
memory/1628-7-0x00000000054C0000-0x00000000054E2000-memory.dmp
memory/1628-29-0x0000000004EB0000-0x0000000004EC0000-memory.dmp
memory/1628-21-0x0000000007490000-0x0000000007506000-memory.dmp
memory/1628-33-0x0000000004EB0000-0x0000000004EC0000-memory.dmp
memory/1628-35-0x0000000004EB0000-0x0000000004EC0000-memory.dmp
memory/1628-36-0x0000000008440000-0x0000000008445000-memory.dmp
memory/1628-5-0x0000000004F00000-0x0000000004F36000-memory.dmp
memory/4820-72-0x00000000012D0000-0x0000000002524000-memory.dmp
memory/4820-57-0x000000001EAF0000-0x000000001EBE7000-memory.dmp
memory/4820-58-0x000000001EAF0000-0x000000001EBE7000-memory.dmp
memory/4820-49-0x00000000012D0000-0x0000000002524000-memory.dmp
memory/4820-65-0x00000000012D0000-0x0000000002524000-memory.dmp
memory/4820-68-0x00000000012D0000-0x0000000002524000-memory.dmp
memory/4820-66-0x00000000012D0000-0x0000000002524000-memory.dmp
memory/4820-54-0x000000001EAF0000-0x000000001EBE7000-memory.dmp
memory/4820-69-0x00000000012D0000-0x0000000002524000-memory.dmp
memory/4820-70-0x00000000012D0000-0x0000000002524000-memory.dmp
memory/4820-71-0x00000000012D0000-0x0000000002524000-memory.dmp
memory/4820-67-0x00000000012D0000-0x0000000002524000-memory.dmp
memory/4820-76-0x00000000012D0000-0x0000000002524000-memory.dmp