Analysis
- max time kernel
150s - max time network
152s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
30/09/2026, 06:38
Behavioral task
behavioral1
Sample
au88buzz.exe
Resource
win10v2004-20260911-en
windows10-2004-x64
13 signatures
150 seconds
Behavioral task
behavioral2
Sample
au88buzz.exe
Resource
win11ltsc2024-20260911-en
windows11-ltsc_2024-x64
12 signatures
150 seconds
General
- Target au88buzz.exe
- Size 645KB
- Sample260930-heaevavfrd
- SHA256 6603337fd89ce3e0b1c3602a013a18711cd0a33a40e0960c3f9b093eb3fe1f88
- MD5 5b95aa96622a234d55ff9d5442faca4e
- SHA1 e0b371f1ea8eadcf9ef2b3491ea7f5618fe93ed9
- SHA512 1750c55239736eeefcec662b0fd19276ce2f3780a1d2fcd44c86b04ef744ced06172213fb5d2a8e797fc5e5a23985d3c69316fb29b77d1ae0c89aa4ef98b89f9
- SSDEEP 12288:lIfxS5XkH4nOqwitNfuquCwgs69gy3V5v+BNyo3PoL5aDz0u:65GXkH4nnwitNfuq9wgs3y3V5vgNyo3S
- TLSH T18CE46D59A39402F8D0B7C135C982952BE7B2BC065571472F03E70E9B2F276A16F3EB16
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
Malware Config
Extracted
Family
-
remcos
Version
-
7.3.1 Pro
Botnet
-
RemoteHost
Attributes
-
audio_folder
MicRecords
-
audio_path
%Temp%
-
audio_record_time
5
-
connect_delay
0
-
connect_interval
1
-
copy_file
okvip.exe
-
copy_folder
okvip
-
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
okvip
-
mouse_option
false
-
mutex
RemcosFocus-RXIEAS
-
screenshot_crypt
false
-
screenshot_flag
true
-
screenshot_folder
Screenshots
-
screenshot_path
%SystemDrive%
-
screenshot_time
5
- startup_value
-
take_screenshot_option
true
-
take_screenshot_time
5
-
take_screenshot_title
chrome;discord;facebook;telegram;whatsapp;youtube;instagram;tiktok;spotify;netflix;zoom;teams;slack;steam;vlc;coccoc
Signatures
- Suricata alert: REMCOS RAT Malware Outbound C2 Communication 64 IoCs
Network activity triggered a Suricata alert
flow pid Process 309 5276 okvip.exe 309 5276 okvip.exe 243 5276 okvip.exe 243 5276 okvip.exe 9 5276 okvip.exe 9 5276 okvip.exe 6 5276 okvip.exe 6 5276 okvip.exe 25 5276 okvip.exe 25 5276 okvip.exe 110 5276 okvip.exe 110 5276 okvip.exe 89 5276 okvip.exe 89 5276 okvip.exe 92 5276 okvip.exe 92 5276 okvip.exe 197 5276 okvip.exe 197 5276 okvip.exe 199 5276 okvip.exe 199 5276 okvip.exe 39 5276 okvip.exe 39 5276 okvip.exe 116 5276 okvip.exe 116 5276 okvip.exe 136 5276 okvip.exe 136 5276 okvip.exe 203 5276 okvip.exe 203 5276 okvip.exe 224 5276 okvip.exe 224 5276 okvip.exe 176 5276 okvip.exe 176 5276 okvip.exe 209 5276 okvip.exe 209 5276 okvip.exe 251 5276 okvip.exe 251 5276 okvip.exe 83 5276 okvip.exe 83 5276 okvip.exe 164 5276 okvip.exe 164 5276 okvip.exe 142 5276 okvip.exe 142 5276 okvip.exe 258 5276 okvip.exe 258 5276 okvip.exe 211 5276 okvip.exe 211 5276 okvip.exe 269 5276 okvip.exe 269 5276 okvip.exe 300 5276 okvip.exe 300 5276 okvip.exe 291 5276 okvip.exe 291 5276 okvip.exe 74 5276 okvip.exe 74 5276 okvip.exe 98 5276 okvip.exe 98 5276 okvip.exe 68 5276 okvip.exe 68 5276 okvip.exe 282 5276 okvip.exe 282 5276 okvip.exe 227 5276 okvip.exe 227 5276 okvip.exe 263 5276 okvip.exe 263 5276 okvip.exe - Adds policy Run key to start application 2 TTPs 4 IoCs
description ioc Process Key created \REGISTRY\MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\ au88buzz.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\RemcosFocus-RXIEAS = "\"C:\\ProgramData\\okvip\\okvip.exe\"" au88buzz.exe Key created \REGISTRY\MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\ okvip.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\RemcosFocus-RXIEAS = "\"C:\\ProgramData\\okvip\\okvip.exe\"" okvip.exe - Executes dropped EXE 1 IoCs
pid Process 5276 okvip.exe - Adds Run key to start application 2 TTPs 4 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2714045687-1127350534-2056456672-1000\Software\Microsoft\Windows\CurrentVersion\Run\RemcosFocus-RXIEAS = "\"C:\\ProgramData\\okvip\\okvip.exe\"" au88buzz.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RemcosFocus-RXIEAS = "\"C:\\ProgramData\\okvip\\okvip.exe\"" au88buzz.exe Set value (str) \REGISTRY\USER\S-1-5-21-2714045687-1127350534-2056456672-1000\Software\Microsoft\Windows\CurrentVersion\Run\RemcosFocus-RXIEAS = "\"C:\\ProgramData\\okvip\\okvip.exe\"" okvip.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RemcosFocus-RXIEAS = "\"C:\\ProgramData\\okvip\\okvip.exe\"" okvip.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- 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.
description ioc Process Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain okvip.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname okvip.exe - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 5276 okvip.exe - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: 33 628 AUDIODG.EXE Token: SeIncBasePriorityPrivilege 628 AUDIODG.EXE - Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 5276 okvip.exe - Suspicious use of SendNotifyMessage 1 IoCs
pid Process 5276 okvip.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 4384 wrote to memory of 5276 4384 au88buzz.exe 90
Processes
-
C:\Users\Admin\AppData\Local\Temp\au88buzz.exe"C:\Users\Admin\AppData\Local\Temp\au88buzz.exe"1⤵
- Adds policy Run key to start application
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4384 -
C:\ProgramData\okvip\okvip.exe"C:\ProgramData\okvip\okvip.exe"2⤵
- Suricata alert: REMCOS RAT Malware Outbound C2 Communication
- Adds policy Run key to start application
- Executes dropped EXE
- Adds Run key to start application
- Reads the TCP/IP host and domain name from the registry
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:5276
-
-
C:\Windows\system32\AUDIODG.EXEC:\Windows\system32\AUDIODG.EXE 0x00000000000004B4 0x00000000000004BC1⤵
- Suspicious use of AdjustPrivilegeToken
PID:628
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k GPSvcGroup1⤵PID:4928
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\ProgramData\okvip\okvip.exe
- Size 645KB
- SHA256 6603337fd89ce3e0b1c3602a013a18711cd0a33a40e0960c3f9b093eb3fe1f88
- MD5 5b95aa96622a234d55ff9d5442faca4e
- SHA1 e0b371f1ea8eadcf9ef2b3491ea7f5618fe93ed9
- SHA512 1750c55239736eeefcec662b0fd19276ce2f3780a1d2fcd44c86b04ef744ced06172213fb5d2a8e797fc5e5a23985d3c69316fb29b77d1ae0c89aa4ef98b89f9
- SSDEEP 12288:lIfxS5XkH4nOqwitNfuquCwgs69gy3V5v+BNyo3PoL5aDz0u:65GXkH4nnwitNfuq9wgs3y3V5vgNyo3S
- TLSH T18CE46D59A39402F8D0B7C135C982952BE7B2BC065571472F03E70E9B2F276A16F3EB16
- MD5 SHA1 SHA512 SSDEEP TLSH