Analysis
- max time kernel
54s - max time network
123s - platform
windows7_x64 - resource
win7-20220901-en - resource tags
- submitted
11/10/2022, 13:03
General
- Target vbc.exe
- Size 1.1MB
- Sample221011-qaccmsfcdq
- SHA256 4abb470a78c432cc2f4a2001eb2c5188b4c6f31fcc557fdace4e35222d976300
Malware Config
Extracted
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snakekeylogger
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Protocol
smtp
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Host
us2.smtp.mailhostbox.com
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Port
587
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Username
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Password
LYSV$*b4
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Email to
Signatures
- Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
- Snake Keylogger payload 6 IoCs
- 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.
- Uses the VBS compiler for execution 1 TTPs
- 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 4 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 17 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\vbc.exe"C:\Users\Admin\AppData\Local\Temp\vbc.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\dwXPCDQU.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\dwXPCDQU" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB01E.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\vbc.exe"C:\Users\Admin\AppData\Local\Temp\vbc.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
tmpB01E.tmp
memory/768-78-0x000000006E6A0000-0x000000006EC4B000-memory.dmp
memory/768-77-0x000000006E6A0000-0x000000006EC4B000-memory.dmp
memory/1092-75-0x0000000000400000-0x0000000000426000-memory.dmp
memory/1092-73-0x0000000000400000-0x0000000000426000-memory.dmp
memory/1092-70-0x0000000000400000-0x0000000000426000-memory.dmp
memory/1092-64-0x0000000000400000-0x0000000000426000-memory.dmp
memory/1092-65-0x0000000000400000-0x0000000000426000-memory.dmp
memory/1092-67-0x0000000000400000-0x0000000000426000-memory.dmp
memory/1092-69-0x0000000000400000-0x0000000000426000-memory.dmp
memory/1280-58-0x0000000005E70000-0x0000000005EF0000-memory.dmp
memory/1280-63-0x0000000005070000-0x0000000005096000-memory.dmp
memory/1280-54-0x0000000000AC0000-0x0000000000BEC000-memory.dmp
memory/1280-57-0x0000000000560000-0x000000000056C000-memory.dmp
memory/1280-56-0x0000000000420000-0x000000000043A000-memory.dmp
memory/1280-55-0x0000000075601000-0x0000000075603000-memory.dmp