Analysis
- max time kernel
149s - max time network
151s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
20/07/2026, 11:07
Static task
static1
Behavioral task
behavioral1
Sample
b82f9e8db8498f52fe986a31acc6ec7ba2de38c4c7a1aa69f043f577497d87e0.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
b82f9e8db8498f52fe986a31acc6ec7ba2de38c4c7a1aa69f043f577497d87e0.exe
Resource
win11ltsc2024-20260709-en
Behavioral task
behavioral3
Sample
$PLUGINSDIR/System.dll
Resource
win10v2004-20260513-en
Behavioral task
behavioral4
Sample
$PLUGINSDIR/System.dll
Resource
win11ltsc2024-20260710-en
General
- Target b82f9e8db8498f52fe986a31acc6ec7ba2de38c4c7a1aa69f043f577497d87e0.exe
- Size 359KB
- Sample260720-m8dftafy4k
- SHA256 b82f9e8db8498f52fe986a31acc6ec7ba2de38c4c7a1aa69f043f577497d87e0
- MD5 d022205d82dd10c284166ad80d5c9d22
- SHA1 cd94d67990828d7ea5513c1faf0ea3fc047c9b8c
- SHA512 a006f733a6b2a09e9ee1935784c05becf8bda822be737c523fcfa2af12ed072da4e6485378faecc38b4f2cf761256adb077abdefa4398827cbda50ef60f539db
- SSDEEP 6144:zQ606xy+J5ulYpE7AamO/hv/ZsoOYLPix+VTH3jNYdBWOHku:o+3ZamOpHSzaL3jNYdMaku
- TLSH T15174F113B330D963C628073144D76B768739EE242E1F8B471358BF5F3DB6282A91B299
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Extracted
-
remcos
-
7.2.5 Pro
-
RemoteHost
-
107.175.148.68:2404
-
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
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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-S7EK0D
-
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: Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- Loads dropped DLL 1 IoCs
pid Process 3100 b82f9e8db8498f52fe986a31acc6ec7ba2de38c4c7a1aa69f043f577497d87e0.exe - 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.
flow ioc 1 drive.google.com 4 drive.google.com - Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
pid Process 812 b82f9e8db8498f52fe986a31acc6ec7ba2de38c4c7a1aa69f043f577497d87e0.exe - Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
pid Process 3100 b82f9e8db8498f52fe986a31acc6ec7ba2de38c4c7a1aa69f043f577497d87e0.exe 812 b82f9e8db8498f52fe986a31acc6ec7ba2de38c4c7a1aa69f043f577497d87e0.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- 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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b82f9e8db8498f52fe986a31acc6ec7ba2de38c4c7a1aa69f043f577497d87e0.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b82f9e8db8498f52fe986a31acc6ec7ba2de38c4c7a1aa69f043f577497d87e0.exe - Suspicious behavior: MapViewOfSection 1 IoCs
pid Process 3100 b82f9e8db8498f52fe986a31acc6ec7ba2de38c4c7a1aa69f043f577497d87e0.exe - Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 812 b82f9e8db8498f52fe986a31acc6ec7ba2de38c4c7a1aa69f043f577497d87e0.exe - Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 3100 wrote to memory of 5828 3100 b82f9e8db8498f52fe986a31acc6ec7ba2de38c4c7a1aa69f043f577497d87e0.exe 89 PID 3100 wrote to memory of 812 3100 b82f9e8db8498f52fe986a31acc6ec7ba2de38c4c7a1aa69f043f577497d87e0.exe 90 PID 3100 wrote to memory of 812 3100 b82f9e8db8498f52fe986a31acc6ec7ba2de38c4c7a1aa69f043f577497d87e0.exe 90 PID 812 wrote to memory of 1124 812 b82f9e8db8498f52fe986a31acc6ec7ba2de38c4c7a1aa69f043f577497d87e0.exe 91
Processes
-
C:\Users\Admin\AppData\Local\Temp\b82f9e8db8498f52fe986a31acc6ec7ba2de38c4c7a1aa69f043f577497d87e0.exe"C:\Users\Admin\AppData\Local\Temp\b82f9e8db8498f52fe986a31acc6ec7ba2de38c4c7a1aa69f043f577497d87e0.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3100 -
C:\Users\Admin\AppData\Local\Temp\b82f9e8db8498f52fe986a31acc6ec7ba2de38c4c7a1aa69f043f577497d87e0.exe"C:\Users\Admin\AppData\Local\Temp\b82f9e8db8498f52fe986a31acc6ec7ba2de38c4c7a1aa69f043f577497d87e0.exe"2⤵PID:5828
-
-
C:\Users\Admin\AppData\Local\Temp\b82f9e8db8498f52fe986a31acc6ec7ba2de38c4c7a1aa69f043f577497d87e0.exe"C:\Users\Admin\AppData\Local\Temp\b82f9e8db8498f52fe986a31acc6ec7ba2de38c4c7a1aa69f043f577497d87e0.exe"2⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:812 -
C:\Users\Admin\AppData\Local\Temp\b82f9e8db8498f52fe986a31acc6ec7ba2de38c4c7a1aa69f043f577497d87e0.exe"C:\Users\Admin\AppData\Local\Temp\b82f9e8db8498f52fe986a31acc6ec7ba2de38c4c7a1aa69f043f577497d87e0.exe"3⤵PID:1124
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-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\ProgramData\remcos\logs.dat
- Size 102B
- SHA256 f89503a458cbc8960633dae4a22cf74c42c609736801d2f0660e8b2202cf86c1
- MD5 4a1f76ba0a0196133d6a9b2fc1a1818b
- SHA1 9b33cf8ab1d0289746cf3dfde2ea6937a1ce49ab
- SHA512 b01cf9eedcdfff382eaacf6a7b56ebbe69633e7e93ff54fdb9063ab6ce7efa6fbbc8db7eb86c12649051b55eb93844caad651619020708e77041710a643f95a2
- TLSH T190B0125C2BD2101AF474E17B98F3005728707D510439840C35D0034C0474A013082393
- MD5 SHA1 SHA512 TLSH
- Path C:\Users\Admin\AppData\Local\Temp\nsb799.tmp\System.dll
- Size 11KB
- SHA256 f004c568d305cd95edbd704166fcd2849d395b595dff814bcc2012693527ac37
- MD5 8b3830b9dbf87f84ddd3b26645fed3a0
- SHA1 223bef1f19e644a610a0877d01eadc9e28299509
- SHA512 d13cfd98db5ca8dc9c15723eee0e7454975078a776bce26247228be4603a0217e166058ebadc68090afe988862b7514cb8cb84de13b3de35737412a6f0a8ac03
- SSDEEP 192:ex24sihno00Wfl97nH6BenXwWobpWBTtvShJ5omi7dJWjOlESlS:h8QIl972eXqlWBFSt273YOlEz
- TLSH T10D325D06235081F3E1914138846B3E175B7A15069BF58E97DFD38646BE30BE7BD79503
- MD5 SHA1 SHA512 SSDEEP TLSH