Analysis
- max time kernel
144s - max time network
116s - platform
windows10_x64 - resource
win10v20201028 - submitted
10/11/2020, 11:29
General
- Target 8c5377a5c2835e5f22f14477e0c6916257e9a034cf3a73eefd8068d64d4f4924.exe
- Size 660KB
- Sample201110-36vrtl1fm2
- SHA256 8c5377a5c2835e5f22f14477e0c6916257e9a034cf3a73eefd8068d64d4f4924
Malware Config
Extracted
-
agenttesla
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Protocol
smtp
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Host
smtp.sunko-tw.com
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Port
587
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Username
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Password
investment123
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.
- Adds Run key to start application 2 TTPs 1 IoCs
- 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 14 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\8c5377a5c2835e5f22f14477e0c6916257e9a034cf3a73eefd8068d64d4f4924.exe"C:\Users\Admin\AppData\Local\Temp\8c5377a5c2835e5f22f14477e0c6916257e9a034cf3a73eefd8068d64d4f4924.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\jyNwefysZQYHR" /XML "C:\Users\Admin\AppData\Local\Temp\tmpFE0D.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\8c5377a5c2835e5f22f14477e0c6916257e9a034cf3a73eefd8068d64d4f4924.exe"C:\Users\Admin\AppData\Local\Temp\8c5377a5c2835e5f22f14477e0c6916257e9a034cf3a73eefd8068d64d4f4924.exe"2⤵
-
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C:\Users\Admin\AppData\Local\Temp\8c5377a5c2835e5f22f14477e0c6916257e9a034cf3a73eefd8068d64d4f4924.exe"C:\Users\Admin\AppData\Local\Temp\8c5377a5c2835e5f22f14477e0c6916257e9a034cf3a73eefd8068d64d4f4924.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/3724-22-0x0000000005A00000-0x0000000005A01000-memory.dmp
memory/3724-21-0x0000000004DD0000-0x0000000004DD1000-memory.dmp
memory/3724-16-0x0000000073300000-0x00000000739EE000-memory.dmp
memory/3724-13-0x0000000000400000-0x000000000043C000-memory.dmp
memory/3932-5-0x00000000056A0000-0x00000000056A1000-memory.dmp
memory/3932-10-0x00000000063F0000-0x0000000006429000-memory.dmp
memory/3932-9-0x0000000006380000-0x00000000063ED000-memory.dmp
memory/3932-8-0x0000000005570000-0x000000000557B000-memory.dmp
memory/3932-7-0x0000000005600000-0x0000000005601000-memory.dmp
memory/3932-6-0x00000000054B0000-0x00000000054B1000-memory.dmp
memory/3932-0-0x0000000073300000-0x00000000739EE000-memory.dmp
memory/3932-4-0x0000000005B00000-0x0000000005B01000-memory.dmp
memory/3932-3-0x00000000054C0000-0x00000000054C1000-memory.dmp
memory/3932-1-0x0000000000C00000-0x0000000000C01000-memory.dmp