Analysis
- max time kernel
146s - max time network
143s - platform
windows10-2004_x64 - resource
win10v2004-20220414-en - submitted
21/05/2022, 00:37
General
- Target New_Order2287.exe
- Size 564KB
- Sample220521-ayrt8sbac4
- SHA256 1a6f810afe2bfeebadb01ab981ec29c7f0f8283570ab3a550f6a6cc4634384e2
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.actionassist.co.uk
-
Port
587
-
Username
-
Password
benjamin76
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 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
- 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.
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 3 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\New_Order2287.exe"C:\Users\Admin\AppData\Local\Temp\New_Order2287.exe"1⤵
- Checks BIOS information in registry
- Checks computer location settings
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\XQrGnpLJE" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCAA3.tmp"2⤵
- Creates scheduled task(s)
-
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C:\Users\Admin\AppData\Local\Temp\New_Order2287.exe"{path}"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
tmpCAA3.tmp
memory/2928-130-0x0000000000E60000-0x0000000000EF4000-memory.dmp
memory/2928-131-0x0000000008280000-0x0000000008824000-memory.dmp
memory/2928-132-0x0000000007D70000-0x0000000007E02000-memory.dmp
memory/2928-133-0x0000000007EB0000-0x0000000007F4C000-memory.dmp
memory/2928-134-0x0000000001620000-0x0000000001686000-memory.dmp
memory/4144-138-0x0000000000400000-0x000000000044C000-memory.dmp
memory/4144-139-0x0000000006160000-0x00000000061B0000-memory.dmp
memory/4144-140-0x0000000006480000-0x000000000648A000-memory.dmp