Analysis
- max time kernel
129s - max time network
20s - platform
windows7_x64 - resource
win7v20201028 - submitted
09/11/2020, 20:54
General
- Target Doc_767467JUNE2020.exe
- Size 411KB
- Sample201109-vafb89tnta
- SHA256 0a2b42cf3d5e0aacd6a21adbd2a1997630d0d3fa0419019e22c54bee82fc729d
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
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Host
mail.privateemail.com
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Port
587
-
Username
-
Password
71c7eb1f8baa88
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 4 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 4 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\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
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\hJDfxyODH" /XML "C:\Users\Admin\AppData\Local\Temp\tmp645E.tmp"2⤵
- Creates scheduled task(s)
-
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C:\Users\Admin\AppData\Local\Temp\Doc_767467JUNE2020.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/788-0-0x0000000074DA0000-0x000000007548E000-memory.dmp
memory/788-1-0x0000000001240000-0x0000000001241000-memory.dmp
memory/788-3-0x00000000001C0000-0x00000000001C2000-memory.dmp
memory/788-4-0x00000000011E0000-0x0000000001232000-memory.dmp
memory/1608-7-0x0000000000400000-0x0000000000450000-memory.dmp
memory/1608-9-0x0000000000400000-0x0000000000450000-memory.dmp
memory/1608-10-0x0000000000400000-0x0000000000450000-memory.dmp
memory/1608-11-0x0000000074DA0000-0x000000007548E000-memory.dmp