Analysis
- max time kernel
121s - max time network
158s - platform
windows10-2004_x64 - resource
win10v2004-20220414-en - submitted
21/05/2022, 03:22
General
- Target DHL_AWB #1008936572891_pdf.exe
- Size 2.1MB
- Sample220521-dxdg1agdh8
- SHA256 885179565290381c8e8e883f1e4c776507c1ddd3bfa8902f432ea31fbf01c683
Malware Config
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
- MassLogger Main Payload 4 IoCs
- AgentTesla Payload 2 IoCs
- Executes dropped EXE 1 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Drops startup file 1 IoCs
- Loads dropped DLL 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.
- Accesses Microsoft Outlook profiles 1 TTPs 3 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.
- Suspicious behavior: EnumeratesProcesses 9 IoCs
- Suspicious use of AdjustPrivilegeToken 4 IoCs
- Suspicious use of WriteProcessMemory 17 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\DHL_AWB #1008936572891_pdf.exe"C:\Users\Admin\AppData\Local\Temp\DHL_AWB #1008936572891_pdf.exe"1⤵
- Checks computer location settings
- Drops startup file
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\MassLoggerBinUPDATEProizvodnja.exe"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\MassLoggerBinUPDATEProizvodnja.exe"2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"cmd" /c start /b powershell Start-Sleep -Seconds 2; Remove-Item -path 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\MassLoggerBinUPDATEProizvodnja.exe' & exit3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell Start-Sleep -Seconds 2; Remove-Item -path 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\MassLoggerBinUPDATEProizvodnja.exe'4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\DHL_AWB #1008936572891_pdf.exe"C:\Users\Admin\AppData\Local\Temp\DHL_AWB #1008936572891_pdf.exe"2⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
l.dll
MassLoggerBinUPDATEProizvodnja.exe
MassLoggerBinUPDATEProizvodnja.exe
memory/772-140-0x0000000004FB0000-0x0000000005016000-memory.dmp
memory/772-139-0x0000000004E00000-0x0000000004E9C000-memory.dmp
memory/772-138-0x0000000000480000-0x0000000000538000-memory.dmp
memory/1876-148-0x0000000005560000-0x00000000055C6000-memory.dmp
memory/1876-150-0x0000000007D90000-0x000000000840A000-memory.dmp
memory/1876-153-0x0000000006B10000-0x0000000006B32000-memory.dmp
memory/1876-152-0x00000000077B0000-0x0000000007846000-memory.dmp
memory/1876-151-0x00000000069C0000-0x00000000069DA000-memory.dmp
memory/1876-149-0x00000000064A0000-0x00000000064BE000-memory.dmp
memory/1876-147-0x00000000053C0000-0x00000000053E2000-memory.dmp
memory/1876-145-0x0000000002B80000-0x0000000002BB6000-memory.dmp
memory/1876-146-0x0000000005680000-0x0000000005CA8000-memory.dmp
memory/1904-142-0x0000000000400000-0x000000000045A000-memory.dmp
memory/1904-154-0x0000000006900000-0x0000000006950000-memory.dmp
memory/1904-155-0x0000000006BD0000-0x0000000006BDA000-memory.dmp
memory/4776-130-0x0000000000BB0000-0x0000000000DC4000-memory.dmp
memory/4776-134-0x0000000006190000-0x0000000006222000-memory.dmp
memory/4776-132-0x0000000073D40000-0x0000000073DC9000-memory.dmp
memory/4776-133-0x0000000006660000-0x0000000006C04000-memory.dmp