Analysis
- max time kernel
59s - max time network
112s - platform
windows10_x64 - resource
win10v20201028 - submitted
09/11/2020, 20:12
General
- Target b5215a5d95bd69c6435f8c174f0c060e.exe
- Size 727KB
- Sample201109-y2dmak1caa
- SHA256 a2b2d55d5396e41e9e5c05caea792ee7ea5656ea034e8d71865011503a62afe9
Malware Config
Extracted
-
Protocol
smtp
-
Host
us2.smtp.mailhostbox.com
-
Port
587
-
Username
-
Password
CSJY%zs2
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
us2.smtp.mailhostbox.com
-
Port
587
-
Username
-
Password
CSJY%zs2
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 3 IoCs
- UPX packed file 3 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- 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.
- Adds Run key to start application 2 TTPs 1 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Suspicious behavior: EnumeratesProcesses 4 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\b5215a5d95bd69c6435f8c174f0c060e.exe"C:\Users\Admin\AppData\Local\Temp\b5215a5d95bd69c6435f8c174f0c060e.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\b5215a5d95bd69c6435f8c174f0c060e.exe"C:\Users\Admin\AppData\Local\Temp\b5215a5d95bd69c6435f8c174f0c060e.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
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/2064-0-0x0000000000400000-0x00000000004B0000-memory.dmp
memory/2064-2-0x0000000000400000-0x00000000004B0000-memory.dmp
memory/2064-3-0x0000000000400000-0x00000000004B0000-memory.dmp
memory/2064-4-0x00000000021B0000-0x0000000002202000-memory.dmp
memory/2064-5-0x0000000000642000-0x0000000000643000-memory.dmp