Analysis
- max time kernel
149s - max time network
149s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
16/02/2026, 10:44
General
- Target AWB No_9G8858, AWB No_9B009177, HAWB No_ 9G88559.exe
- Size 256KB
- Sample260216-ms5kcsbz2b
- SHA256 b20a621d134dc2725fc2390d02310b63b0fdbdca1000a1f45233257ff3f0709c
Malware Config
Extracted
-
remcos
-
7.1.0 Pro
-
RemoteHost
-
198.46.173.31:2404
-
audio_folder
MicRecords
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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
remcos
-
mouse_option
false
-
mutex
Rmc-CBY33Z
-
screenshot_crypt
false
-
screenshot_flag
false
-
screenshot_folder
Screenshots
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screenshot_path
%AppData%
-
screenshot_time
10
-
take_screenshot_option
false
-
take_screenshot_time
5
Signatures
- Guloader family
- Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- Remcos
Remcos is a closed-source remote control and surveillance software.
- Remcos family
- Detected Nirsoft tools 3 IoCs
Free utilities often used by attackers which can steal passwords, product keys, etc.
- NirSoft MailPassView 2 IoCs
Password recovery tool for various email clients
- Loads dropped DLL 2 IoCs
- Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
- Contacts third-party web service commonly abused for C2 1 TTPs 2 IoCs
Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.
- Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
- Suspicious use of SetThreadContext 3 IoCs
- Drops file in Program Files directory 1 IoCs
- Drops file in Windows directory 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 5 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 1 IoCs
- Suspicious use of AdjustPrivilegeToken 4 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 7 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\AWB No_9G8858, AWB No_9B009177, HAWB No_ 9G88559.exe"C:\Users\Admin\AppData\Local\Temp\AWB No_9G8858, AWB No_9B009177, HAWB No_ 9G88559.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Program Files directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\AWB No_9G8858, AWB No_9B009177, HAWB No_ 9G88559.exe"C:\Users\Admin\AppData\Local\Temp\AWB No_9G8858, AWB No_9B009177, HAWB No_ 9G88559.exe"2⤵
-
-
C:\Users\Admin\AppData\Local\Temp\AWB No_9G8858, AWB No_9B009177, HAWB No_ 9G88559.exe"C:\Users\Admin\AppData\Local\Temp\AWB No_9G8858, AWB No_9B009177, HAWB No_ 9G88559.exe"2⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\AWB No_9G8858, AWB No_9B009177, HAWB No_ 9G88559.exe"C:\Users\Admin\AppData\Local\Temp\AWB No_9G8858, AWB No_9B009177, HAWB No_ 9G88559.exe"3⤵
-
-
C:\Windows\SysWOW64\rmclient.exe/stext "C:\Users\Admin\AppData\Local\Temp\hzjyvedsjakjtefjdlrjhshvrw"3⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\SysWOW64\rmclient.exe/stext "C:\Users\Admin\AppData\Local\Temp\rtorowotxidovttvnwmksfbmalepu"3⤵
- Accesses Microsoft Outlook accounts
- System Location Discovery: System Language Discovery
-
-
C:\Windows\SysWOW64\rmclient.exe/stext "C:\Users\Admin\AppData\Local\Temp\cvtjppynlqvsfzqzehzeuswdbrvqnxcs"3⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
logs.dat
hzjyvedsjakjtefjdlrjhshvrw
System.dll
memory/2920-54-0x0000000034A90000-0x0000000034AA9000-memory.dmp
memory/2920-69-0x0000000000480000-0x0000000001797000-memory.dmp
memory/2920-17-0x0000000076F38000-0x0000000076F39000-memory.dmp
memory/2920-18-0x0000000076F4B000-0x0000000076F4C000-memory.dmp
memory/2920-19-0x0000000076FCB000-0x0000000076FCC000-memory.dmp
memory/2920-31-0x0000000000480000-0x0000000001797000-memory.dmp
memory/2920-35-0x00000000017A0000-0x0000000003128000-memory.dmp
memory/2920-109-0x0000000000480000-0x0000000001797000-memory.dmp
memory/2920-92-0x0000000000480000-0x0000000001797000-memory.dmp
memory/2920-88-0x0000000000480000-0x0000000001797000-memory.dmp
memory/2920-84-0x0000000000480000-0x0000000001797000-memory.dmp
memory/2920-80-0x0000000000480000-0x0000000001797000-memory.dmp
memory/2920-77-0x0000000000480000-0x0000000001797000-memory.dmp
memory/2920-73-0x0000000000480000-0x0000000001797000-memory.dmp
memory/2920-65-0x0000000000480000-0x0000000001797000-memory.dmp
memory/2920-61-0x0000000000480000-0x0000000001797000-memory.dmp
memory/2920-16-0x00000000017A0000-0x0000000003128000-memory.dmp
memory/2920-50-0x0000000034A90000-0x0000000034AA9000-memory.dmp
memory/2920-53-0x0000000034A90000-0x0000000034AA9000-memory.dmp
memory/2920-58-0x0000000076FCB000-0x0000000076FCC000-memory.dmp
memory/2920-57-0x00000000333C0000-0x0000000033424000-memory.dmp
memory/2920-56-0x0000000000480000-0x0000000001797000-memory.dmp
memory/3168-47-0x0000000000400000-0x000000000047E000-memory.dmp
memory/3168-48-0x00000000014E0000-0x00000000014F9000-memory.dmp
memory/3168-36-0x0000000000400000-0x000000000047E000-memory.dmp
memory/3176-42-0x00000000011C0000-0x00000000011D9000-memory.dmp
memory/3176-43-0x0000000000400000-0x0000000000424000-memory.dmp
memory/3176-38-0x0000000000400000-0x0000000000424000-memory.dmp
memory/3324-15-0x0000000002980000-0x0000000004308000-memory.dmp
memory/3324-13-0x0000000002980000-0x0000000004308000-memory.dmp
memory/3324-14-0x0000000010004000-0x0000000010005000-memory.dmp
memory/3360-45-0x0000000000400000-0x0000000000462000-memory.dmp
memory/3360-37-0x0000000000400000-0x0000000000462000-memory.dmp