Analysis
- max time kernel
142s - max time network
152s - platform
windows10_x64 - resource
win10 - submitted
24/09/2020, 13:59
General
- Target purchase order oct_20_80373592_80373595.exe
- Size 564KB
- Sample200924-br55jfxnsa
- SHA256 8dc9d32f21b231d0d1ed00ff04eae170eb680034e4079db1f6e17079ab5aa2f9
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
smtp.yandex.com
-
Port
587
-
Username
-
Password
solo09052449116
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 2 IoCs
- Drops startup file 2 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.
- Looks up external IP address via web service 2 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.
- Suspicious behavior: EnumeratesProcesses 46 IoCs
- Suspicious behavior: RenamesItself 1 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\purchase order oct_20_80373592_80373595.exe"C:\Users\Admin\AppData\Local\Temp\purchase order oct_20_80373592_80373595.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c copy "C:\Users\Admin\AppData\Local\Temp\purchase order oct_20_80373592_80373595.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\chrome.exe"2⤵
- Drops startup file
-
-
C:\Users\Admin\AppData\Local\Temp\purchase order oct_20_80373592_80373595.exe"C:\Users\Admin\AppData\Local\Temp\purchase order oct_20_80373592_80373595.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/2704-18-0x0000000005C10000-0x0000000005C11000-memory.dmp
memory/2704-17-0x0000000005080000-0x0000000005081000-memory.dmp
memory/2704-12-0x0000000073290000-0x000000007397E000-memory.dmp
memory/2704-9-0x0000000000400000-0x000000000043C000-memory.dmp
memory/4092-4-0x0000000004F00000-0x0000000004F01000-memory.dmp
memory/4092-7-0x00000000052A0000-0x00000000052A1000-memory.dmp
memory/4092-6-0x0000000005180000-0x00000000051F4000-memory.dmp
memory/4092-5-0x0000000004FB0000-0x0000000004FB1000-memory.dmp
memory/4092-0-0x0000000073290000-0x000000007397E000-memory.dmp
memory/4092-3-0x0000000005400000-0x0000000005401000-memory.dmp
memory/4092-1-0x0000000000630000-0x0000000000631000-memory.dmp