Analysis
- max time kernel
108s - max time network
114s - platform
windows10_x64 - resource
win10v20210410 - submitted
02/06/2021, 06:09
General
- Target TJ8I2tNHFHvbwdf.exe
- Size 731KB
- Sample210602-5352bn72va
- SHA256 8c56d142eb23fdea3f843ca98489eaf220c7836af64f19a49c8ab332918cc87f
Malware Config
Extracted
-
snakekeylogger
-
Protocol
smtp
-
Host
smtp.vivaldi.net
-
Port
587
-
Username
-
Password
#zyxwv#calculator#
Signatures
- Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
- Snake Keylogger Payload 3 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.
- Looks up external IP address via web service 3 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 2 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\TJ8I2tNHFHvbwdf.exe"C:\Users\Admin\AppData\Local\Temp\TJ8I2tNHFHvbwdf.exe"1⤵
- 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\VaQSHgSIvaHK" /XML "C:\Users\Admin\AppData\Local\Temp\tmpACCB.tmp"2⤵
- Creates scheduled task(s)
-
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C:\Users\Admin\AppData\Local\Temp\TJ8I2tNHFHvbwdf.exe"C:\Users\Admin\AppData\Local\Temp\TJ8I2tNHFHvbwdf.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/740-123-0x0000000006430000-0x00000000064B5000-memory.dmp
memory/740-124-0x0000000008980000-0x0000000008A00000-memory.dmp
memory/740-119-0x0000000005690000-0x0000000005691000-memory.dmp
memory/740-120-0x0000000005910000-0x0000000005911000-memory.dmp
memory/740-121-0x00000000056A0000-0x00000000056B4000-memory.dmp
memory/740-122-0x0000000005660000-0x0000000005B5E000-memory.dmp
memory/740-114-0x0000000000D20000-0x0000000000D21000-memory.dmp
memory/740-118-0x0000000005700000-0x0000000005701000-memory.dmp
memory/740-116-0x00000000055C0000-0x00000000055C1000-memory.dmp
memory/740-117-0x0000000005B60000-0x0000000005B61000-memory.dmp
memory/2448-127-0x0000000000400000-0x000000000046A000-memory.dmp
memory/2448-134-0x0000000006BE0000-0x0000000006BE1000-memory.dmp
memory/2448-137-0x0000000005870000-0x0000000005D6E000-memory.dmp