Analysis
- max time kernel
144s - max time network
102s - platform
windows10_x64 - resource
win10v20201028 - submitted
17/12/2020, 17:27
General
- Target invoices.exe
- Size 1.3MB
- Sample201217-edkm8v8t4s
- SHA256 d50d5111a7d6f72c667152608f1b5d90a4658cfc0cee100152ab11d86f892dd3
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.grandtours.gr
-
Port
587
-
Username
-
Password
!ugochukwu1-4-7!???
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 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.
- 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 WriteProcessMemory 11 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\invoices.exe"C:\Users\Admin\AppData\Local\Temp\invoices.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\CzhGUKGi" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3CAC.tmp"2⤵
- Creates scheduled task(s)
-
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C:\Users\Admin\AppData\Local\Temp\invoices.exe"C:\Users\Admin\AppData\Local\Temp\invoices.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/652-26-0x0000000005C10000-0x0000000005C11000-memory.dmp
memory/652-25-0x0000000005430000-0x0000000005431000-memory.dmp
memory/652-20-0x00000000739D0000-0x00000000740BE000-memory.dmp
memory/652-17-0x0000000000400000-0x000000000043C000-memory.dmp
memory/4804-7-0x00000000053A0000-0x00000000053A1000-memory.dmp
memory/4804-12-0x0000000005E50000-0x0000000005E58000-memory.dmp
memory/4804-14-0x0000000006130000-0x00000000061BF000-memory.dmp
memory/4804-11-0x0000000005F90000-0x0000000006038000-memory.dmp
memory/4804-10-0x0000000005270000-0x0000000005282000-memory.dmp
memory/4804-9-0x0000000005510000-0x0000000005511000-memory.dmp
memory/4804-8-0x0000000005250000-0x0000000005251000-memory.dmp
memory/4804-2-0x00000000739D0000-0x00000000740BE000-memory.dmp
memory/4804-6-0x00000000058A0000-0x00000000058A1000-memory.dmp
memory/4804-5-0x0000000005300000-0x0000000005301000-memory.dmp
memory/4804-3-0x00000000008D0000-0x00000000008D1000-memory.dmp