Analysis
- max time kernel
182s - max time network
188s - platform
windows10-2004_x64 - resource
win10v2004-20220414-en - submitted
16/06/2022, 05:59
General
- Target Payment Status.exe
- Size 736KB
- Sample220616-gpqn5secap
- SHA256 d62400abebfe810e81606b5b269bd81a41d128c4d7ba514b60c1583130757303
Malware Config
Extracted
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snakekeylogger
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Protocol
smtp
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Host
mail.citymoontours.com
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Port
26
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Username
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Password
Ope_Cit@2018@
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Email to
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 4 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\Payment Status.exe"C:\Users\Admin\AppData\Local\Temp\Payment Status.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
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ckzjNXkwmbYo" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA4BC.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\Payment Status.exe"{path}"2⤵
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C:\Users\Admin\AppData\Local\Temp\Payment Status.exe"{path}"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
Payment Status.exe.log
tmpA4BC.tmp
memory/632-142-0x0000000006690000-0x0000000006852000-memory.dmp
memory/632-140-0x0000000000400000-0x0000000000426000-memory.dmp
memory/4884-130-0x0000000000740000-0x00000000007FE000-memory.dmp
memory/4884-135-0x000000000F040000-0x000000000F0A6000-memory.dmp
memory/4884-134-0x00000000051B0000-0x00000000051BA000-memory.dmp
memory/4884-133-0x0000000005280000-0x000000000531C000-memory.dmp
memory/4884-132-0x00000000051E0000-0x0000000005272000-memory.dmp
memory/4884-131-0x00000000056F0000-0x0000000005C94000-memory.dmp