Analysis
- max time kernel
149s - max time network
150s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
27/03/2026, 08:00
General
- Target Oplysningskontors.exe
- Size 635KB
- Sample260327-jv9ejsgy71
- SHA256 1baa435dd0c1834273117c8fbbf47cbdfba5450ee71c90926affe63f07afbb92
Malware Config
Extracted
-
remcos
-
7.2.1 Pro
-
RemoteHost
-
130.12.182.113:2404
-
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
true
-
keylog_crypt
false
-
keylog_file
logs.dat
-
keylog_flag
false
-
keylog_folder
remcos
-
mouse_option
false
-
mutex
Rmc-JC1MRU
-
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.
- Remcos family
- Detected Nirsoft tools 1 IoCs
Free utilities often used by attackers which can steal passwords, product keys, etc.
- Executes dropped EXE 3 IoCs
- Loads dropped DLL 3 IoCs
- Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
- Adds Run key to start application 2 TTPs 4 IoCs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- 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.
- Suspicious use of NtCreateThreadExHideFromDebugger 2 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs
- Suspicious use of SetThreadContext 3 IoCs
- Drops file in Windows directory 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- 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.
- Suspicious behavior: EnumeratesProcesses 12 IoCs
- Suspicious behavior: MapViewOfSection 2 IoCs
- Suspicious use of AdjustPrivilegeToken 4 IoCs
- Suspicious use of WriteProcessMemory 13 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Oplysningskontors.exe"C:\Users\Admin\AppData\Local\Temp\Oplysningskontors.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\Oplysningskontors.exe"C:\Users\Admin\AppData\Local\Temp\Oplysningskontors.exe"2⤵
-
-
C:\Users\Admin\AppData\Local\Temp\Oplysningskontors.exe"C:\Users\Admin\AppData\Local\Temp\Oplysningskontors.exe"2⤵
- Adds Run key to start application
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\Oplysningskontors.exe"C:\Users\Admin\AppData\Local\Temp\Oplysningskontors.exe"3⤵
-
-
C:\ProgramData\Remcos\remcos.exe"C:\ProgramData\Remcos\remcos.exe"3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\ProgramData\Remcos\remcos.exe"C:\ProgramData\Remcos\remcos.exe"4⤵
- Executes dropped EXE
-
-
C:\ProgramData\Remcos\remcos.exe"C:\ProgramData\Remcos\remcos.exe"4⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\ProgramData\Remcos\remcos.exe"C:\ProgramData\Remcos\remcos.exe"5⤵
- Executes dropped EXE
-
-
C:\Windows\SysWOW64\userinit.exe/stext "C:\Users\Admin\AppData\Local\Temp\bjlrqox"5⤵
-
-
C:\Windows\SysWOW64\userinit.exe/stext "C:\Users\Admin\AppData\Local\Temp\bjlrqox"5⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\SysWOW64\userinit.exe/stext "C:\Users\Admin\AppData\Local\Temp\mlycrhhiek"5⤵
- Accesses Microsoft Outlook accounts
- System Location Discovery: System Language Discovery
-
-
C:\Windows\SysWOW64\userinit.exe/stext "C:\Users\Admin\AppData\Local\Temp\ofdvjzskrsueb"5⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
-
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
remcos.exe
05DDC6AA91765AACACDB0A5F96DF8199
24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
4FA45AE1010E09657982D8D28B3BD38E_26C96ABEF6BB14A381A8250635DD6ACF
4FA45AE1010E09657982D8D28B3BD38E_975A82052DF9D652057035BF7BF9AF6E
05DDC6AA91765AACACDB0A5F96DF8199
24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
4FA45AE1010E09657982D8D28B3BD38E_26C96ABEF6BB14A381A8250635DD6ACF
4FA45AE1010E09657982D8D28B3BD38E_975A82052DF9D652057035BF7BF9AF6E
bjlrqox
System.dll
Forsvindingsnummeret202.stu
Sejlklubben
projektbeskrivelse.txt
pseudonavicella.sti
udviklingsplaners.ini
memory/952-83-0x0000000000400000-0x0000000000424000-memory.dmp
memory/952-88-0x0000000000400000-0x0000000000424000-memory.dmp
memory/952-87-0x0000000000C70000-0x0000000000CBA000-memory.dmp
memory/1232-79-0x0000000034900000-0x000000003494A000-memory.dmp
memory/1232-113-0x0000000000490000-0x00000000017A7000-memory.dmp
memory/1232-123-0x0000000000490000-0x00000000017A7000-memory.dmp
memory/1232-121-0x0000000000490000-0x00000000017A7000-memory.dmp
memory/1232-119-0x0000000000490000-0x00000000017A7000-memory.dmp
memory/1232-117-0x0000000000490000-0x00000000017A7000-memory.dmp
memory/1232-73-0x0000000000490000-0x00000000017A7000-memory.dmp
memory/1232-115-0x0000000000490000-0x00000000017A7000-memory.dmp
memory/1232-78-0x0000000000490000-0x00000000017A7000-memory.dmp
memory/1232-100-0x0000000035EF0000-0x0000000035F09000-memory.dmp
memory/1232-111-0x0000000000490000-0x00000000017A7000-memory.dmp
memory/1232-109-0x0000000000490000-0x00000000017A7000-memory.dmp
memory/1232-101-0x0000000035EF0000-0x0000000035F09000-memory.dmp
memory/1232-107-0x0000000000490000-0x00000000017A7000-memory.dmp
memory/1232-105-0x0000000000490000-0x00000000017A7000-memory.dmp
memory/1232-103-0x0000000000490000-0x00000000017A7000-memory.dmp
memory/1232-97-0x0000000035EF0000-0x0000000035F09000-memory.dmp
memory/1296-102-0x0000000000430000-0x00000000004AE000-memory.dmp
memory/1296-81-0x0000000000430000-0x00000000004AE000-memory.dmp
memory/4332-82-0x0000000000400000-0x000000000045E000-memory.dmp
memory/4332-91-0x0000000000400000-0x000000000045E000-memory.dmp
memory/4332-90-0x00000000014C0000-0x000000000150A000-memory.dmp
memory/4356-11-0x0000000076F18000-0x0000000076F19000-memory.dmp
memory/4356-13-0x0000000076F2B000-0x0000000076F2C000-memory.dmp
memory/4356-12-0x0000000076FAB000-0x0000000076FAC000-memory.dmp
memory/4356-28-0x0000000000490000-0x00000000017A7000-memory.dmp
memory/4356-33-0x0000000076E81000-0x0000000076FA3000-memory.dmp
memory/4356-45-0x0000000034900000-0x000000003494A000-memory.dmp
memory/4356-44-0x0000000000490000-0x00000000017A7000-memory.dmp
memory/4704-95-0x0000000000400000-0x000000000047E000-memory.dmp
memory/4704-94-0x0000000000E20000-0x0000000000E6A000-memory.dmp
memory/5440-63-0x0000000000AB0000-0x0000000000AFA000-memory.dmp
memory/5804-10-0x0000000000AA0000-0x0000000000AEA000-memory.dmp
memory/5804-9-0x0000000073C25000-0x0000000073C26000-memory.dmp