Analysis
- max time kernel
127s - max time network
111s - platform
windows10_x64 - resource
win10v20201028 - submitted
31/03/2021, 07:05
General
- Target Order_011-0421-PDF.exe
- Size 915KB
- Sample210331-amq5dsky1x
- SHA256 63ebe3b6b4c74b82cc098f5ba4eccf9e100b0fde5dcee78347042f357eb1b5d5
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
smtp.ferllo.com
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Port
587
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Username
-
Password
Sync@#1235
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 2 IoCs
- Executes dropped EXE 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 2 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 19 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 17 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Order_011-0421-PDF.exe"C:\Users\Admin\AppData\Local\Temp\Order_011-0421-PDF.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "cs" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\cs.exe"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\reg.exeREG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "cs" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\cs.exe"3⤵
- Adds Run key to start application
-
-
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\cs.exe"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\cs.exe"2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\cs.exe"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\cs.exe"3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/996-44-0x0000000002A50000-0x0000000002A51000-memory.dmp
memory/996-42-0x0000000005480000-0x0000000005481000-memory.dmp
memory/996-41-0x0000000005020000-0x0000000005021000-memory.dmp
memory/996-40-0x0000000005170000-0x0000000005171000-memory.dmp
memory/996-35-0x0000000073460000-0x0000000073B4E000-memory.dmp
memory/996-31-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1048-11-0x0000000006A70000-0x0000000006A9F000-memory.dmp
memory/1048-2-0x0000000073460000-0x0000000073B4E000-memory.dmp
memory/1048-14-0x0000000005401000-0x0000000005402000-memory.dmp
memory/1048-3-0x0000000000040000-0x0000000000041000-memory.dmp
memory/1048-5-0x0000000004E10000-0x0000000004E11000-memory.dmp
memory/1048-6-0x00000000049B0000-0x00000000049B1000-memory.dmp
memory/1048-7-0x0000000004A50000-0x0000000004A51000-memory.dmp
memory/1048-8-0x0000000005410000-0x0000000005411000-memory.dmp
memory/1048-9-0x0000000005400000-0x0000000005401000-memory.dmp
memory/1352-28-0x0000000004F61000-0x0000000004F62000-memory.dmp
memory/1352-30-0x0000000006950000-0x0000000006951000-memory.dmp
memory/1352-29-0x00000000028C0000-0x00000000028CB000-memory.dmp
memory/1352-25-0x0000000004F60000-0x0000000004F61000-memory.dmp
memory/1352-18-0x0000000073460000-0x0000000073B4E000-memory.dmp