Analysis
- max time kernel
143s - max time network
146s - platform
windows10-2004_x64 - resource
win10v2004-20220310-en - submitted
29/03/2022, 15:20
General
- Target AWB5032675620_pdf.exe
- Size 1.0MB
- Sample220329-sqqlbafea9
- SHA256 c95b25f8ee7c2ccdc331d63a9239b4c48b06435b6a1e9dcdecf52909313639b2
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
smtp.valtronics-ae.com
-
Port
587
-
Username
-
Password
YTMIlIR0
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 1 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.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- 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 4 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\AWB5032675620_pdf.exe"C:\Users\Admin\AppData\Local\Temp\AWB5032675620_pdf.exe"1⤵
- Checks BIOS information in registry
- Checks computer location settings
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- 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\AWB5032675620_pdf.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Users\Admin\AppData\Local\Temp\AWB5032675620_pdf.exe"C:\Users\Admin\AppData\Local\Temp\AWB5032675620_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/1480-135-0x0000000005370000-0x0000000005914000-memory.dmp
memory/1480-136-0x0000000004C90000-0x0000000004D22000-memory.dmp
memory/1480-137-0x0000000004D40000-0x0000000004D4A000-memory.dmp
memory/1480-138-0x0000000006DC0000-0x0000000006E5C000-memory.dmp
memory/1480-140-0x0000000008A00000-0x0000000008A66000-memory.dmp
memory/1480-134-0x00000000001F0000-0x0000000000302000-memory.dmp
memory/4408-159-0x0000000006980000-0x00000000069D0000-memory.dmp
memory/4408-144-0x0000000000400000-0x000000000043C000-memory.dmp
memory/4660-146-0x0000000006010000-0x0000000006076000-memory.dmp
memory/4660-152-0x00000000080C0000-0x000000000873A000-memory.dmp
memory/4660-145-0x00000000057C0000-0x00000000057E2000-memory.dmp
memory/4660-141-0x00000000051A0000-0x00000000051D6000-memory.dmp
memory/4660-147-0x0000000006780000-0x000000000679E000-memory.dmp
memory/4660-148-0x0000000006D40000-0x0000000006D72000-memory.dmp
memory/4660-149-0x00000000705B0000-0x00000000705FC000-memory.dmp
memory/4660-150-0x0000000007730000-0x000000000774E000-memory.dmp
memory/4660-151-0x0000000005235000-0x0000000005237000-memory.dmp
memory/4660-142-0x0000000005870000-0x0000000005E98000-memory.dmp
memory/4660-153-0x0000000007A80000-0x0000000007A9A000-memory.dmp
memory/4660-154-0x0000000007AF0000-0x0000000007AFA000-memory.dmp
memory/4660-155-0x0000000007D00000-0x0000000007D96000-memory.dmp
memory/4660-156-0x0000000007CC0000-0x0000000007CCE000-memory.dmp
memory/4660-157-0x0000000007DD0000-0x0000000007DEA000-memory.dmp
memory/4660-158-0x0000000007DB0000-0x0000000007DB8000-memory.dmp