Analysis
- max time kernel
74s - max time network
112s - platform
windows10_x64 - resource
win10v20201028 - submitted
09/11/2020, 19:54
General
- Target 0409a65940431b1e1b4afa72cfa2ef1a.exe
- Size 452KB
- Sample201109-2pg5anpvrx
- SHA256 45468d2e1bd42e5b480642a5123fb7746a4a936c8c4b0dbf36520e1421ee4413
Malware Config
Extracted
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Protocol
smtp
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Host
smtp.yandex.com
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Port
587
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Username
-
Password
farmer22
Extracted
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agenttesla
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Protocol
smtp
-
Host
smtp.yandex.com
-
Port
587
-
Username
-
Password
farmer22
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- CoreEntity .NET Packer 1 IoCs
A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.
- 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 17 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\0409a65940431b1e1b4afa72cfa2ef1a.exe"C:\Users\Admin\AppData\Local\Temp\0409a65940431b1e1b4afa72cfa2ef1a.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\oifIoeu" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8C57.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\0409a65940431b1e1b4afa72cfa2ef1a.exe"{path}"2⤵
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C:\Users\Admin\AppData\Local\Temp\0409a65940431b1e1b4afa72cfa2ef1a.exe"{path}"2⤵
- 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
Loading Replay Monitor...
Downloads
memory/2432-5-0x0000000002C00000-0x0000000002C01000-memory.dmp
memory/2432-3-0x0000000005680000-0x0000000005681000-memory.dmp
memory/2432-6-0x0000000008700000-0x0000000008702000-memory.dmp
memory/2432-7-0x0000000008890000-0x00000000088E3000-memory.dmp
memory/2432-8-0x00000000089A0000-0x00000000089A1000-memory.dmp
memory/2432-1-0x00000000007A0000-0x00000000007A1000-memory.dmp
memory/2432-4-0x0000000005180000-0x0000000005181000-memory.dmp
memory/2432-0-0x0000000073970000-0x000000007405E000-memory.dmp
memory/2580-11-0x0000000000400000-0x0000000000452000-memory.dmp
memory/2580-14-0x0000000073970000-0x000000007405E000-memory.dmp
memory/2580-19-0x00000000059D0000-0x00000000059D1000-memory.dmp
memory/2580-20-0x00000000065A0000-0x00000000065A1000-memory.dmp