Analysis
- max time kernel
122s - max time network
18s - platform
windows7_x64 - resource
win7v200722 - submitted
13/10/2020, 07:54
General
- Target Transfer doc & Returned message content.pdf.exe
- Size 983KB
- Sample201013-kh353flrb2
- SHA256 dbae317e9d39fb5a987c2d0dc6d08c171615c0e9042f576ca4075ddda49fa515
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.northwestpowdercoating.co.uk
-
Port
587
-
Username
-
Password
C^0z.^LxykTW
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 4 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.
- 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 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 13 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Transfer doc & Returned message content.pdf.exe"C:\Users\Admin\AppData\Local\Temp\Transfer doc & Returned message content.pdf.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\XYYTZw" /XML "C:\Users\Admin\AppData\Local\Temp\tmpFD04.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\Transfer doc & Returned message content.pdf.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1108-0-0x00000000739C0000-0x00000000740AE000-memory.dmp
memory/1108-1-0x0000000000BF0000-0x0000000000BF1000-memory.dmp
memory/1108-3-0x0000000000290000-0x0000000000294000-memory.dmp
memory/1108-4-0x0000000005310000-0x0000000005395000-memory.dmp
memory/1108-5-0x0000000000630000-0x00000000006AC000-memory.dmp
memory/1896-8-0x0000000000400000-0x0000000000436000-memory.dmp
memory/1896-10-0x0000000000400000-0x0000000000436000-memory.dmp
memory/1896-11-0x0000000000400000-0x0000000000436000-memory.dmp
memory/1896-12-0x00000000739C0000-0x00000000740AE000-memory.dmp