Analysis
- max time kernel
143s - max time network
129s - platform
windows10_x64 - resource
win10-en-20211014 - submitted
16/11/2021, 18:24
General
- Target Invoice_pdf.exe
- Size 443KB
- Sample211116-w12ccaehh3
- SHA256 2e429509ebdfe814918560102dcd1ebd5116fc4b9b0138ab647019bde4df6ab0
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
smtp.huiijingco.com
-
Port
587
-
Username
-
Password
lNLUrZT2
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 2 IoCs
- Looks for VirtualBox Guest Additions in registry 2 TTPs
- Looks for VMWare Tools registry key 2 TTPs
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
- 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
- Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
- 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 7 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Invoice_pdf.exe"C:\Users\Admin\AppData\Local\Temp\Invoice_pdf.exe"1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Invoice_pdf.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
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C:\Users\Admin\AppData\Local\Temp\Invoice_pdf.exe"C:\Users\Admin\AppData\Local\Temp\Invoice_pdf.exe"2⤵
-
-
C:\Users\Admin\AppData\Local\Temp\Invoice_pdf.exe"C:\Users\Admin\AppData\Local\Temp\Invoice_pdf.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/1736-148-0x0000000008A70000-0x0000000008A71000-memory.dmp
memory/1736-129-0x00000000034E0000-0x00000000034E1000-memory.dmp
memory/1736-226-0x0000000004ED3000-0x0000000004ED4000-memory.dmp
memory/1736-171-0x0000000009C90000-0x0000000009C91000-memory.dmp
memory/1736-170-0x000000007EC10000-0x000000007EC11000-memory.dmp
memory/1736-169-0x0000000009AB0000-0x0000000009AB1000-memory.dmp
memory/1736-164-0x0000000009740000-0x0000000009741000-memory.dmp
memory/1736-133-0x0000000004ED0000-0x0000000004ED1000-memory.dmp
memory/1736-145-0x00000000082A0000-0x00000000082A1000-memory.dmp
memory/1736-130-0x00000000034E0000-0x00000000034E1000-memory.dmp
memory/1736-131-0x0000000004EE0000-0x0000000004EE1000-memory.dmp
memory/1736-132-0x00000000079B0000-0x00000000079B1000-memory.dmp
memory/1736-134-0x0000000004ED2000-0x0000000004ED3000-memory.dmp
memory/1736-157-0x0000000009760000-0x0000000009793000-memory.dmp
memory/1736-150-0x00000000034E0000-0x00000000034E1000-memory.dmp
memory/1736-149-0x00000000089D0000-0x00000000089D1000-memory.dmp
memory/1736-147-0x0000000008150000-0x0000000008151000-memory.dmp
memory/1736-142-0x0000000007920000-0x0000000007921000-memory.dmp
memory/1736-143-0x0000000008050000-0x0000000008051000-memory.dmp
memory/1868-146-0x0000000005000000-0x0000000005001000-memory.dmp
memory/1868-135-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1960-118-0x0000000000610000-0x0000000000611000-memory.dmp
memory/1960-128-0x0000000007970000-0x0000000007971000-memory.dmp
memory/1960-120-0x0000000005480000-0x0000000005481000-memory.dmp
memory/1960-121-0x0000000004EB0000-0x0000000004EB1000-memory.dmp
memory/1960-126-0x0000000007690000-0x00000000076E3000-memory.dmp
memory/1960-125-0x00000000075F0000-0x00000000075F1000-memory.dmp
memory/1960-124-0x00000000072C0000-0x00000000072C7000-memory.dmp
memory/1960-123-0x0000000004F60000-0x0000000004F61000-memory.dmp
memory/1960-122-0x0000000004F80000-0x000000000547E000-memory.dmp