Analysis
- max time kernel
149s - max time network
151s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
- submitted
04/06/2026, 07:34
General
- Target _122c5a6023260ffffd8f44f808d1558b55e508abaaacac99c4b593dc19e86289.js
- Size 2.2MB
- Sample260604-jd83fsa16v
- SHA256 122c5a6023260ffffd8f44f808d1558b55e508abaaacac99c4b593dc19e86289
Malware Config
Extracted
-
remcos
-
6.0.0 Pro
-
JEMPP
-
jempp912.duckdns.org:42859
-
audio_folder
MicRecords
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audio_path
ApplicationPath
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audio_record_time
5
-
connect_delay
0
-
connect_interval
1
-
copy_file
remcos.exe
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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
remcos
-
mouse_option
false
-
mutex
Rmc-JNOYSJ
-
screenshot_crypt
false
-
screenshot_flag
false
-
screenshot_folder
Screenshots
-
screenshot_path
%AppData%
-
screenshot_time
10
-
take_screenshot_option
false
-
take_screenshot_time
5
Signatures
- Family: Remcos
Remcos is a closed-source remote control and surveillance software.
- Suspicious use of SetThreadContext 1 IoCs
- Command and Scripting Interpreter: JavaScript 1 TTPs
- Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Using powershell.exe command.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 10 IoCs
Processes
-
C:\Windows\system32\wscript.exewscript.exe C:\Users\Admin\AppData\Local\Temp\_122c5a6023260ffffd8f44f808d1558b55e508abaaacac99c4b593dc19e86289.js1⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -ExecutionPolicy Bypass -Command "& 'C:\Users\Admin\AppData\Local\Microsoft\Windows\00000000-6a2b04d2-90302bfe7ee5\Interface_LIB.ps1'"2⤵
- Suspicious use of SetThreadContext
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\1o4s0cfz\1o4s0cfz.cmdline"3⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES5697.tmp" "c:\Users\Admin\AppData\Local\Temp\1o4s0cfz\CSC99FB3EFDA2D14F35B7DFE07D27A2E2F.TMP"4⤵
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-
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"3⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
-
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
logs.dat
Interface_LIB.ps1
1o4s0cfz.dll
RES5697.tmp
__PSScriptPolicyTest_0z5yt553.ghw.ps1
1o4s0cfz.0.cs
1o4s0cfz.cmdline
CSC99FB3EFDA2D14F35B7DFE07D27A2E2F.TMP
memory/3084-15-0x0000000005FF0000-0x000000000600E000-memory.dmp
memory/3084-1-0x0000000004D70000-0x0000000004D80000-memory.dmp
memory/3084-16-0x0000000006020000-0x000000000606C000-memory.dmp
memory/3084-14-0x0000000005BD0000-0x0000000005F27000-memory.dmp
memory/3084-18-0x0000000007A20000-0x000000000809A000-memory.dmp
memory/3084-19-0x0000000006550000-0x000000000656A000-memory.dmp
memory/3084-7-0x0000000005AD0000-0x0000000005B36000-memory.dmp
memory/3084-6-0x00000000052D0000-0x0000000005336000-memory.dmp
memory/3084-5-0x0000000005230000-0x0000000005252000-memory.dmp
memory/3084-4-0x00000000053B0000-0x00000000059DA000-memory.dmp
memory/3084-3-0x0000000004D70000-0x0000000004D80000-memory.dmp
memory/3084-32-0x00000000065A0000-0x00000000065A8000-memory.dmp
memory/3084-2-0x0000000002B10000-0x0000000002B46000-memory.dmp
memory/3284-37-0x0000000000400000-0x0000000000480000-memory.dmp
memory/3284-49-0x0000000000400000-0x0000000000480000-memory.dmp
memory/3284-34-0x0000000000400000-0x0000000000480000-memory.dmp
memory/3284-41-0x0000000000400000-0x0000000000480000-memory.dmp
memory/3284-42-0x0000000000400000-0x0000000000480000-memory.dmp
memory/3284-43-0x0000000000400000-0x0000000000480000-memory.dmp
memory/3284-44-0x0000000000400000-0x0000000000480000-memory.dmp
memory/3284-46-0x0000000000400000-0x0000000000480000-memory.dmp
memory/3284-48-0x0000000000400000-0x0000000000480000-memory.dmp
memory/3284-40-0x0000000000400000-0x0000000000480000-memory.dmp
memory/3284-33-0x0000000000400000-0x0000000000480000-memory.dmp
memory/3284-56-0x0000000000400000-0x0000000000480000-memory.dmp
memory/3284-57-0x0000000000400000-0x0000000000480000-memory.dmp
memory/3284-64-0x0000000000400000-0x0000000000480000-memory.dmp
memory/3284-65-0x0000000000400000-0x0000000000480000-memory.dmp
memory/3284-72-0x0000000000400000-0x0000000000480000-memory.dmp
memory/3284-73-0x0000000000400000-0x0000000000480000-memory.dmp