Analysis
- max time kernel
133s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-en-20220113 - submitted
02/03/2022, 07:22
Static task
static1
Behavioral task
behavioral1
Sample
PI RVSD.exe
Resource
win7-en-20211208
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
PI RVSD.exe
Resource
win10v2004-en-20220113
0 signatures
0 seconds
General
- Target PI RVSD.exe
- Size 1.0MB
- Sample220302-h7bhlsfdel
- SHA256 ae13fe36ae25d1c276ec9efaaa8599e186f9df2b2d742c7999b895fdf2d302d7
- MD5 0fd8ac4fa5d3ad4b2b4256b866a3e8ce
- SHA1 10fbeaa20b24d27f4dd03cecd2bd4cd228fd08b5
- SHA512 6beb76c3d490080e73b6c5c701c28e5bb6a744c0603b5007c2b49d745226fc972c5c4f04181df391d6b06c442a7928c96d8f922abce7a7e6339f2a5107e44797
- MD5 SHA1 SHA512
Score
10/10
Malware Config
Extracted
Family
-
snakekeylogger
C2
-
https://api.telegram.org/bot5236802193:AAGUg2Jxtw69mUjDR6vxXk0chLrg5ZCWXvQ/sendMessage?chat_id=5169950779
Signatures
- Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
- Snake Keylogger Payload 1 IoCs
resource yara_rule behavioral2/memory/4324-137-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger - Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
- Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 PI RVSD.exe Key opened \REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 PI RVSD.exe Key opened \REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 PI RVSD.exe - Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 31 checkip.dyndns.org 33 freegeoip.app 34 freegeoip.app - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1504 set thread context of 4324 1504 PI RVSD.exe 90 - Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 4324 PI RVSD.exe - Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4324 PI RVSD.exe - Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 1504 wrote to memory of 4324 1504 PI RVSD.exe 90 PID 1504 wrote to memory of 4324 1504 PI RVSD.exe 90 PID 1504 wrote to memory of 4324 1504 PI RVSD.exe 90 PID 1504 wrote to memory of 4324 1504 PI RVSD.exe 90 PID 1504 wrote to memory of 4324 1504 PI RVSD.exe 90 PID 1504 wrote to memory of 4324 1504 PI RVSD.exe 90 PID 1504 wrote to memory of 4324 1504 PI RVSD.exe 90 PID 1504 wrote to memory of 4324 1504 PI RVSD.exe 90 - outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 PI RVSD.exe - outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 PI RVSD.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\PI RVSD.exe"C:\Users\Admin\AppData\Local\Temp\PI RVSD.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1504 -
C:\Users\Admin\AppData\Local\Temp\PI RVSD.exe"C:\Users\Admin\AppData\Local\Temp\PI RVSD.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:4324
-