Analysis
- max time kernel
119s - max time network
113s - platform
windows10_x64 - resource
win10v20201028 - submitted
09/11/2020, 20:53
General
- Target Revised PI.pdf.exe
- Size 411KB
- Sample201109-sesb13ej8a
- SHA256 41eacb31f32da496ed3d78e3b90797bea286f56808a09ab339846ee3aa18b643
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.bestinjectionmachines.com
-
Port
587
-
Username
-
Password
@?w-%n6@l_sU
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 2 IoCs
- rezer0 1 IoCs
Detects ReZer0, a packer with multiple versions used in various campaigns.
- 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 2 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Revised PI.pdf.exe"C:\Users\Admin\AppData\Local\Temp\Revised PI.pdf.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\SCSwJXLnf" /XML "C:\Users\Admin\AppData\Local\Temp\tmpFBCB.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\Revised PI.pdf.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/980-11-0x0000000000400000-0x000000000044C000-memory.dmp
memory/980-20-0x0000000006300000-0x0000000006301000-memory.dmp
memory/980-19-0x00000000056E0000-0x00000000056E1000-memory.dmp
memory/980-14-0x0000000073360000-0x0000000073A4E000-memory.dmp
memory/4768-3-0x0000000005640000-0x0000000005641000-memory.dmp
memory/4768-4-0x00000000051E0000-0x00000000051E1000-memory.dmp
memory/4768-0-0x0000000073360000-0x0000000073A4E000-memory.dmp
memory/4768-8-0x00000000088D0000-0x000000000891E000-memory.dmp
memory/4768-1-0x0000000000820000-0x0000000000821000-memory.dmp
memory/4768-7-0x0000000007150000-0x0000000007151000-memory.dmp
memory/4768-6-0x00000000051B0000-0x00000000051B2000-memory.dmp
memory/4768-5-0x00000000050D0000-0x00000000050D1000-memory.dmp