Analysis
- max time kernel
132s - max time network
139s - platform
windows7_x64 - resource
win7 - submitted
13/10/2020, 17:49
General
- Target Returned message contents.pdf.exe
- Size 909KB
- Sample201013-5pq74aps4a
- SHA256 e5171bb49c254789fa2528ab19a09aeeae8869148da7d3a539da9f6a75ff7b85
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.northwestpowdercoating.co.uk
-
Port
587
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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\Returned message contents.pdf.exe"C:\Users\Admin\AppData\Local\Temp\Returned message contents.pdf.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\tbPdptBihWl" /XML "C:\Users\Admin\AppData\Local\Temp\tmp362D.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\Returned message contents.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/1124-0-0x0000000073F00000-0x00000000745EE000-memory.dmp
memory/1124-1-0x00000000013E0000-0x00000000013E1000-memory.dmp
memory/1124-3-0x0000000000390000-0x0000000000394000-memory.dmp
memory/1124-4-0x00000000049B0000-0x0000000004A1A000-memory.dmp
memory/1124-5-0x00000000008E0000-0x0000000000949000-memory.dmp
memory/2032-8-0x0000000000400000-0x0000000000436000-memory.dmp
memory/2032-10-0x0000000000400000-0x0000000000436000-memory.dmp
memory/2032-11-0x0000000000400000-0x0000000000436000-memory.dmp
memory/2032-12-0x0000000073F00000-0x00000000745EE000-memory.dmp