Analysis
- max time kernel
73s - max time network
117s - platform
windows10_x64 - resource
win10v20201028 - submitted
09/11/2020, 19:29
General
- Target RFQ 342 W-Heavy.exe
- Size 499KB
- Sample201109-j88b678fga
- SHA256 4c886afcf091e440b12ade502e4b8dcd2e9995cb2c10d7c0f8fd16e736d6fca6
Malware Config
Extracted
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agenttesla
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Protocol
smtp
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Host
mail.sridurgaagros.com
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Port
587
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Username
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Password
@Hammer75
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Modifies Windows Defender Real-time Protection settings 3 TTPs
- 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.
- Windows security modification 2 TTPs 2 IoCs
- 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 6 IoCs
- Suspicious behavior: RenamesItself 1 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 17 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\RFQ 342 W-Heavy.exe"C:\Users\Admin\AppData\Local\Temp\RFQ 342 W-Heavy.exe"1⤵
- Windows security modification
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"powershell" Get-MpPreference -verbose2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ykbVJGg" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC7BA.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\RFQ 342 W-Heavy.exe"{path}"2⤵
- Drops file in Drivers directory
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- 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/656-1-0x0000000000380000-0x0000000000381000-memory.dmp
memory/656-3-0x0000000005120000-0x0000000005121000-memory.dmp
memory/656-4-0x0000000004CC0000-0x0000000004CC1000-memory.dmp
memory/656-5-0x0000000004C50000-0x0000000004C51000-memory.dmp
memory/656-6-0x0000000004DD0000-0x0000000004DD3000-memory.dmp
memory/656-7-0x0000000007120000-0x0000000007121000-memory.dmp
memory/656-8-0x00000000072C0000-0x0000000007312000-memory.dmp
memory/656-0-0x0000000074070000-0x000000007475E000-memory.dmp
memory/2104-37-0x0000000000400000-0x0000000000450000-memory.dmp
memory/2104-40-0x0000000074070000-0x000000007475E000-memory.dmp
memory/2104-45-0x0000000005A20000-0x0000000005A21000-memory.dmp
memory/3760-17-0x00000000067A0000-0x00000000067A1000-memory.dmp
memory/3760-16-0x00000000075C0000-0x00000000075C1000-memory.dmp
memory/3760-19-0x0000000007C20000-0x0000000007C21000-memory.dmp
memory/3760-21-0x0000000008C70000-0x0000000008CA3000-memory.dmp
memory/3760-28-0x0000000008C30000-0x0000000008C31000-memory.dmp
memory/3760-29-0x0000000008DA0000-0x0000000008DA1000-memory.dmp
memory/3760-30-0x0000000008F70000-0x0000000008F71000-memory.dmp
memory/3760-31-0x0000000008E80000-0x0000000008E81000-memory.dmp
memory/3760-33-0x0000000008E70000-0x0000000008E71000-memory.dmp
memory/3760-18-0x0000000007D40000-0x0000000007D41000-memory.dmp
memory/3760-15-0x0000000007550000-0x0000000007551000-memory.dmp
memory/3760-14-0x0000000007470000-0x0000000007471000-memory.dmp
memory/3760-13-0x0000000006B60000-0x0000000006B61000-memory.dmp
memory/3760-12-0x0000000006BF0000-0x0000000006BF1000-memory.dmp
memory/3760-11-0x0000000006530000-0x0000000006531000-memory.dmp
memory/3760-10-0x0000000074070000-0x000000007475E000-memory.dmp