Analysis
- max time kernel
131s - max time network
146s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
19/01/2023, 15:10
General
- Target vbc.exe
- Size 872KB
- Sample230119-sj2d8sdc6z
- SHA256 ea514283fd12de8e7d7a4938bb370d7987a78e1ef0bd25ccb9cf90f61b747b73
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
-
Password
^!uJBr^9 daniel
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.
- 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 6 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 14 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⤵
- Checks computer location settings
- 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\nRaszfFYFQdh.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\nRaszfFYFQdh" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5FB.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
Loading Replay Monitor...
Downloads
tmp5FB.tmp
memory/1244-150-0x00000000071F0000-0x000000000720E000-memory.dmp
memory/1244-155-0x0000000007560000-0x000000000756E000-memory.dmp
memory/1244-157-0x0000000007650000-0x0000000007658000-memory.dmp
memory/1244-156-0x0000000007670000-0x000000000768A000-memory.dmp
memory/1244-146-0x00000000059D0000-0x0000000005A36000-memory.dmp
memory/1244-154-0x00000000075B0000-0x0000000007646000-memory.dmp
memory/1244-140-0x0000000002700000-0x0000000002736000-memory.dmp
memory/1244-143-0x0000000005190000-0x00000000057B8000-memory.dmp
memory/1244-153-0x00000000073A0000-0x00000000073AA000-memory.dmp
memory/1244-152-0x0000000007330000-0x000000000734A000-memory.dmp
memory/1244-144-0x0000000005060000-0x0000000005082000-memory.dmp
memory/1244-147-0x0000000006010000-0x000000000602E000-memory.dmp
memory/1244-145-0x00000000058B0000-0x0000000005916000-memory.dmp
memory/1244-151-0x0000000007970000-0x0000000007FEA000-memory.dmp
memory/1244-148-0x00000000065F0000-0x0000000006622000-memory.dmp
memory/1244-149-0x0000000070350000-0x000000007039C000-memory.dmp
memory/3700-132-0x0000000000720000-0x0000000000800000-memory.dmp
memory/3700-134-0x00000000051E0000-0x0000000005272000-memory.dmp
memory/3700-133-0x00000000056F0000-0x0000000005C94000-memory.dmp
memory/3700-136-0x0000000005420000-0x00000000054BC000-memory.dmp
memory/3700-135-0x00000000051B0000-0x00000000051BA000-memory.dmp
memory/4596-142-0x0000000000400000-0x0000000000426000-memory.dmp
memory/4596-158-0x0000000006C80000-0x0000000006E42000-memory.dmp