Analysis
- max time kernel
135s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-20230220-en - resource tags
- submitted
30/03/2023, 06:41
General
- Target Pending invoice.exe
- Size 639KB
- Sample230330-hfr2aabc54
- SHA256 eab658dc337806cf9d581da4cb44cfdea0a7ed1d9a5007848faeaa0b624fed3b
Malware Config
Extracted
-
snakekeylogger
-
https://api.telegram.org/bot6201063260:AAFNunaDOhtoeTfrWIWz56huyZbdHssBU3s/sendMessage?chat_id=5932819427
Signatures
- Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
- Snake Keylogger payload 1 IoCs
- 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.
- 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 11 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Pending invoice.exe"C:\Users\Admin\AppData\Local\Temp\Pending invoice.exe"1⤵
- Checks computer location settings
- 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\QrEFTvDEw" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF33E.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\Pending invoice.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
Pending invoice.exe.log
tmpF33E.tmp
memory/424-139-0x0000000004E20000-0x0000000004E30000-memory.dmp
memory/424-136-0x0000000004C70000-0x0000000004D02000-memory.dmp
memory/424-137-0x0000000004B30000-0x0000000004B3A000-memory.dmp
memory/424-138-0x0000000004E30000-0x0000000004E86000-memory.dmp
memory/424-133-0x0000000000050000-0x00000000000F6000-memory.dmp
memory/424-140-0x0000000004E20000-0x0000000004E30000-memory.dmp
memory/424-135-0x0000000005180000-0x0000000005724000-memory.dmp
memory/424-134-0x0000000004A90000-0x0000000004B2C000-memory.dmp
memory/3696-144-0x0000000000400000-0x0000000000426000-memory.dmp
memory/3696-147-0x00000000055C0000-0x00000000055D0000-memory.dmp
memory/3696-148-0x0000000006770000-0x0000000006932000-memory.dmp
memory/3696-149-0x00000000055C0000-0x00000000055D0000-memory.dmp