Analysis
- max time kernel
126s - max time network
130s - platform
windows10_x64 - resource
win10v20201028 - submitted
31/03/2021, 07:00
General
- Target New Order_011_033121_pdf.exe
- Size 915KB
- Sample210331-vmps4nagdj
- SHA256 c95438b7107da932d24c8a04dcf5ab9adccad56086566765c2f7c96cc08ec8d0
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
smtp.marnner.com
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Port
587
-
Username
-
Password
max@#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 21 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 17 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\New Order_011_033121_pdf.exe"C:\Users\Admin\AppData\Local\Temp\New Order_011_033121_pdf.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\cmd.exe"cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "cl" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\cl.exe"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\reg.exeREG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "cl" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\cl.exe"3⤵
- Adds Run key to start application
-
-
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\cl.exe"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\cl.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\cl.exe"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\cl.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/1144-3-0x0000000000300000-0x0000000000301000-memory.dmp
memory/1144-6-0x0000000004C20000-0x0000000004C21000-memory.dmp
memory/1144-11-0x0000000006D40000-0x0000000006D6F000-memory.dmp
memory/1144-2-0x0000000073450000-0x0000000073B3E000-memory.dmp
memory/1144-8-0x0000000004E10000-0x0000000004E11000-memory.dmp
memory/1144-14-0x0000000005851000-0x0000000005852000-memory.dmp
memory/1144-7-0x0000000004D70000-0x0000000004D71000-memory.dmp
memory/1144-5-0x00000000051D0000-0x00000000051D1000-memory.dmp
memory/1144-10-0x0000000005850000-0x0000000005851000-memory.dmp
memory/2192-26-0x00000000050E0000-0x00000000050E1000-memory.dmp
memory/2192-18-0x0000000073450000-0x0000000073B3E000-memory.dmp
memory/2192-29-0x00000000069A0000-0x00000000069AB000-memory.dmp
memory/2192-30-0x00000000069B0000-0x00000000069B1000-memory.dmp
memory/2192-28-0x00000000050E1000-0x00000000050E2000-memory.dmp
memory/2736-40-0x0000000004980000-0x0000000004981000-memory.dmp
memory/2736-35-0x0000000073460000-0x0000000073B4E000-memory.dmp
memory/2736-36-0x0000000000510000-0x000000000054C000-memory.dmp
memory/2736-41-0x0000000004AF0000-0x0000000004AF1000-memory.dmp
memory/2736-42-0x0000000005660000-0x0000000005661000-memory.dmp
memory/2736-44-0x0000000005900000-0x0000000005901000-memory.dmp