Analysis
- max time kernel
144s - max time network
125s - platform
windows7_x64 - resource
win7-en-20211208 - submitted
11/01/2022, 12:08
General
- Target facturas.exe
- Size 414KB
- Sample220111-pawkvafgdk
- SHA256 d61623b9915cd46b51b99358c8d7fcbff16d1fed253dfba5372ffc7300f2577f
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
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Host
mail.mincro.es
-
Port
587
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Username
-
Password
OcM58913030
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 8 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.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- 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 5 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 17 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\facturas.exe"C:\Users\Admin\AppData\Local\Temp\facturas.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\VLChRBFYkfojU.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\VLChRBFYkfojU" /XML "C:\Users\Admin\AppData\Local\Temp\tmp80F3.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\facturas.exe"C:\Users\Admin\AppData\Local\Temp\facturas.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1484-74-0x00000000024F0000-0x000000000313A000-memory.dmp
memory/1484-76-0x00000000024F0000-0x000000000313A000-memory.dmp
memory/1484-75-0x00000000024F0000-0x000000000313A000-memory.dmp
memory/1588-56-0x0000000000DA0000-0x0000000000E0E000-memory.dmp
memory/1588-57-0x0000000075191000-0x0000000075193000-memory.dmp
memory/1588-58-0x00000000022E0000-0x00000000022E1000-memory.dmp
memory/1588-59-0x0000000000440000-0x000000000044E000-memory.dmp
memory/1588-60-0x0000000004DD0000-0x0000000004E40000-memory.dmp
memory/1588-55-0x0000000000DA0000-0x0000000000E0E000-memory.dmp
memory/1984-66-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1984-69-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1984-71-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1984-72-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1984-73-0x0000000000440000-0x0000000000441000-memory.dmp
memory/1984-68-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1984-67-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1984-65-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1984-77-0x0000000000441000-0x0000000000442000-memory.dmp