Analysis
- max time kernel
148s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20260911-en - resource tags
- submitted
30/10/2026, 05:45
General
- Target Bioclimatologies.vbs
- Size 83KB
- Sample261030-gfx2vswtas
- SHA256 5e002592660e4f81cbbc369c59bdeef59f75a0ada044178417f99197c14521af
Malware Config
Extracted
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remcos
-
7.3.1 Pro
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RemoteHost1
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130.12.182.29:2404
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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-GLASEN
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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: Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- 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 SetWindowsHookEx 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\Bioclimatologies.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 ^%Svejsbarere240^% | !undervisningspligterne! -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 %Svejsbarere240% "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 SetWindowsHookEx
- 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
logs.dat
Login Data For Account.tmp
__PSScriptPolicyTest_1yaz0a0r.nop.ps1
memory/1724-90-0x0000000000C00000-0x0000000001E54000-memory.dmp
memory/1724-75-0x0000000000C00000-0x0000000001E54000-memory.dmp
memory/1724-87-0x0000000000C00000-0x0000000001E54000-memory.dmp
memory/1724-84-0x0000000000C00000-0x0000000001E54000-memory.dmp
memory/1724-93-0x0000000000C00000-0x0000000001E54000-memory.dmp
memory/1724-81-0x0000000000C00000-0x0000000001E54000-memory.dmp
memory/1724-78-0x0000000000C00000-0x0000000001E54000-memory.dmp
memory/1724-51-0x0000000000C00000-0x0000000001E54000-memory.dmp
memory/1724-72-0x0000000000C00000-0x0000000001E54000-memory.dmp
memory/1724-96-0x0000000000C00000-0x0000000001E54000-memory.dmp
memory/1724-69-0x0000000000C00000-0x0000000001E54000-memory.dmp
memory/1724-66-0x0000000000C00000-0x0000000001E54000-memory.dmp
memory/1724-99-0x0000000000C00000-0x0000000001E54000-memory.dmp
memory/1724-59-0x000000001E420000-0x000000001E517000-memory.dmp
memory/1724-58-0x000000001E420000-0x000000001E517000-memory.dmp
memory/1724-55-0x000000001E420000-0x000000001E517000-memory.dmp
memory/1980-21-0x0000000006F40000-0x0000000006F84000-memory.dmp
memory/1980-25-0x0000000007320000-0x00000000073B6000-memory.dmp
memory/1980-30-0x0000000002600000-0x0000000002610000-memory.dmp
memory/1980-33-0x0000000008910000-0x000000000A5A5000-memory.dmp
memory/1980-32-0x0000000008910000-0x000000000A5A5000-memory.dmp
memory/1980-34-0x0000000002600000-0x0000000002610000-memory.dmp
memory/1980-35-0x0000000002600000-0x0000000002610000-memory.dmp
memory/1980-36-0x0000000007DC0000-0x0000000007DC5000-memory.dmp
memory/1980-37-0x0000000008910000-0x000000000A5A5000-memory.dmp
memory/1980-29-0x0000000002600000-0x0000000002610000-memory.dmp
memory/1980-28-0x0000000002600000-0x0000000002610000-memory.dmp
memory/1980-27-0x0000000008360000-0x0000000008904000-memory.dmp
memory/1980-26-0x00000000072D0000-0x00000000072F2000-memory.dmp
memory/1980-31-0x0000000007DC0000-0x0000000007DC5000-memory.dmp
memory/1980-24-0x00000000070D0000-0x00000000070EA000-memory.dmp
memory/1980-23-0x0000000007730000-0x0000000007DAA000-memory.dmp
memory/1980-22-0x0000000007030000-0x00000000070A6000-memory.dmp
memory/1980-4-0x0000000002600000-0x0000000002610000-memory.dmp
memory/1980-20-0x0000000005DE0000-0x0000000005E2C000-memory.dmp
memory/1980-19-0x0000000005D40000-0x0000000005D5E000-memory.dmp
memory/1980-18-0x0000000005870000-0x0000000005BC4000-memory.dmp
memory/1980-10-0x0000000005800000-0x0000000005866000-memory.dmp
memory/1980-9-0x0000000004F30000-0x0000000004F96000-memory.dmp
memory/1980-8-0x0000000004E90000-0x0000000004EB2000-memory.dmp
memory/1980-7-0x0000000004FA0000-0x00000000055C8000-memory.dmp
memory/1980-6-0x0000000002600000-0x0000000002610000-memory.dmp
memory/1980-5-0x0000000002480000-0x00000000024B6000-memory.dmp