Analysis
- max time kernel
143s - max time network
147s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
01/11/2022, 16:23
General
- Target Attached Payment.exe
- Size 892KB
- Sample221101-tvsrxaddb5
- SHA256 514962de0cfcafea5c6a6ff3c7162c8a9ac2a7362f44812c9f74cf92092c0af3
Malware Config
Extracted
-
snakekeylogger
-
https://api.telegram.org/bot5484820495:AAGEjy8dT72vJZImmHLmeh3onMuG9LLRD5A/sendMessage?chat_id=5101327412
Signatures
- Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
- Snake Keylogger payload 1 IoCs
- Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
- Looks for VMWare Tools registry key 2 TTPs 1 IoCs
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- 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
- Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 3 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Attached Payment.exe"C:\Users\Admin\AppData\Local\Temp\Attached Payment.exe"1⤵
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Checks computer location settings
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\BYIUSAiNV" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF4F4.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\Attached Payment.exe"{path}"2⤵
-
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C:\Users\Admin\AppData\Local\Temp\Attached Payment.exe"{path}"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
tmpF4F4.tmp
memory/3104-142-0x0000000000400000-0x0000000000426000-memory.dmp
memory/3104-143-0x0000000006830000-0x00000000069F2000-memory.dmp
memory/4696-132-0x00000000000B0000-0x0000000000194000-memory.dmp
memory/4696-133-0x0000000005180000-0x0000000005724000-memory.dmp
memory/4696-134-0x0000000004B00000-0x0000000004B92000-memory.dmp
memory/4696-135-0x0000000004C70000-0x0000000004D0C000-memory.dmp
memory/4696-136-0x0000000004BB0000-0x0000000004BBA000-memory.dmp
memory/4696-137-0x000000000D970000-0x000000000D9D6000-memory.dmp