Analysis
- max time kernel
136s - max time network
121s - platform
windows7_x64 - resource
win7-en-20210920 - submitted
06/10/2021, 12:44
General
- Target draft transport documents for trucks collection date approved 013102021.exe
- Size 1.2MB
- Sample211006-pyg3csbba7
- SHA256 7cbf232730bcc3bb4b28f41ef0922d188c9be5f1a63691c0b09ba3e23ef20582
Malware Config
Extracted
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agenttesla
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Protocol
smtp
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Host
mail.atlasmat.com
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Port
587
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Username
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Password
9gf04d0p5KWw
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 3 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
- 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 21 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\draft transport documents for trucks collection date approved 013102021.exe"C:\Users\Admin\AppData\Local\Temp\draft transport documents for trucks collection date approved 013102021.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\SndKHyaSV" /XML "C:\Users\Admin\AppData\Local\Temp\tmp26B2.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\draft transport documents for trucks collection date approved 013102021.exe"{path}"2⤵
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C:\Users\Admin\AppData\Local\Temp\draft transport documents for trucks collection date approved 013102021.exe"{path}"2⤵
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C:\Users\Admin\AppData\Local\Temp\draft transport documents for trucks collection date approved 013102021.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
Loading Replay Monitor...
Downloads
memory/1108-61-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1108-63-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1108-65-0x00000000049D0000-0x00000000049D1000-memory.dmp
memory/1108-66-0x00000000049D1000-0x00000000049D2000-memory.dmp
memory/1740-53-0x0000000000F50000-0x0000000000F51000-memory.dmp
memory/1740-55-0x0000000004F20000-0x0000000004F21000-memory.dmp
memory/1740-56-0x0000000000550000-0x000000000055E000-memory.dmp
memory/1740-57-0x0000000004970000-0x00000000049F0000-memory.dmp
memory/1740-58-0x0000000000D90000-0x0000000000DC9000-memory.dmp