Analysis
- max time kernel
133s - max time network
121s - platform
windows10_x64 - resource
win10v20201028 - submitted
09/11/2020, 20:54
General
- Target Doc_767467JUNE2020.exe
- Size 411KB
- Sample201109-vafb89tnta
- SHA256 0a2b42cf3d5e0aacd6a21adbd2a1997630d0d3fa0419019e22c54bee82fc729d
Malware Config
Extracted
-
Protocol
smtp
-
Host
mail.privateemail.com
-
Port
587
-
Username
-
Password
71c7eb1f8baa88
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.privateemail.com
-
Port
587
-
Username
-
Password
71c7eb1f8baa88
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 5 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\Doc_767467JUNE2020.exe"C:\Users\Admin\AppData\Local\Temp\Doc_767467JUNE2020.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\hJDfxyODH" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5F09.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\Doc_767467JUNE2020.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/648-5-0x0000000005610000-0x0000000005611000-memory.dmp
memory/648-1-0x0000000000790000-0x0000000000791000-memory.dmp
memory/648-0-0x00000000730E0000-0x00000000737CE000-memory.dmp
memory/648-6-0x0000000005C90000-0x0000000005CE2000-memory.dmp
memory/648-7-0x00000000061F0000-0x00000000061F1000-memory.dmp
memory/648-3-0x00000000054D0000-0x00000000054D1000-memory.dmp
memory/648-4-0x00000000050B0000-0x00000000050B2000-memory.dmp
memory/3824-10-0x0000000000400000-0x0000000000450000-memory.dmp
memory/3824-13-0x00000000730F0000-0x00000000737DE000-memory.dmp
memory/3824-18-0x0000000005360000-0x0000000005361000-memory.dmp
memory/3824-19-0x0000000005E80000-0x0000000005E81000-memory.dmp
memory/3824-21-0x0000000006700000-0x0000000006701000-memory.dmp