Analysis
- max time kernel
147s - max time network
150s - platform
windows10_x64 - resource
win10v20201028 - submitted
09/11/2020, 20:31
General
- Target Purchase__quote.pdf.exe
- Size 675KB
- Sample201109-cxgbfppll6
- SHA256 898fb94bb9fb9894ad31a2c4eec424aa0de35cfe8fb97f9da0914105d397ea3f
Malware Config
Extracted
-
Protocol
smtp
-
Host
smtp.yandex.com
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Port
587
-
Username
-
Password
335410
Extracted
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agenttesla
-
Protocol
smtp
-
Host
smtp.yandex.com
-
Port
587
-
Username
-
Password
335410
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.
- Drops file in Drivers directory 1 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
- Suspicious behavior: EnumeratesProcesses 6 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__quote.pdf.exe"C:\Users\Admin\AppData\Local\Temp\Purchase__quote.pdf.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\Purchase__quote.pdf.exe"{path}"2⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\netsh.exe"netsh" wlan show profile3⤵
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/492-0-0x0000000073520000-0x0000000073C0E000-memory.dmp
memory/492-1-0x00000000006D0000-0x00000000006D1000-memory.dmp
memory/492-3-0x0000000007DE0000-0x0000000007DE1000-memory.dmp
memory/492-4-0x00000000079C0000-0x00000000079C1000-memory.dmp
memory/492-5-0x0000000007960000-0x0000000007961000-memory.dmp
memory/492-6-0x0000000002AD0000-0x0000000002AD2000-memory.dmp
memory/492-7-0x0000000002A30000-0x0000000002A83000-memory.dmp
memory/492-8-0x00000000099B0000-0x00000000099B1000-memory.dmp
memory/1836-9-0x0000000000400000-0x0000000000452000-memory.dmp
memory/1836-11-0x0000000073520000-0x0000000073C0E000-memory.dmp
memory/1836-16-0x00000000052D0000-0x00000000052D1000-memory.dmp
memory/1836-17-0x0000000005E20000-0x0000000005E21000-memory.dmp