Analysis
- max time kernel
142s - max time network
145s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
15/12/2022, 14:19
General
- Target SOA Nov 2022 PDF.exe
- Size 982KB
- Sample221215-rmtywsce62
- SHA256 d6f74e0c0585f209929f42958c46b3eb7e650f6e351dfb2820b4ea2aa1155154
Malware Config
Extracted
-
agenttesla
-
https://api.telegram.org/bot1644755040:AAGRTnph6BdO8-t1bJaOyVu9aeuJErmisqs/sendDocument
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Drops file in Drivers directory 1 IoCs
- 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
- Adds Run key to start application 2 TTPs 1 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.
- 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 WriteProcessMemory 11 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\SOA Nov 2022 PDF.exe"C:\Users\Admin\AppData\Local\Temp\SOA Nov 2022 PDF.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\nNjQIviKgzqV" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDBDE.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\SOA Nov 2022 PDF.exe"{path}"2⤵
- Drops file in Drivers directory
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
SOA Nov 2022 PDF.exe.log
tmpDBDE.tmp
memory/1348-140-0x0000000000400000-0x000000000043A000-memory.dmp
memory/1348-142-0x0000000005C10000-0x0000000005C76000-memory.dmp
memory/1348-143-0x0000000006840000-0x0000000006890000-memory.dmp
memory/2760-132-0x00000000001C0000-0x00000000002BA000-memory.dmp
memory/2760-133-0x00000000051B0000-0x0000000005754000-memory.dmp
memory/2760-134-0x0000000004CA0000-0x0000000004D32000-memory.dmp
memory/2760-135-0x0000000004D40000-0x0000000004DDC000-memory.dmp
memory/2760-136-0x0000000004C60000-0x0000000004C6A000-memory.dmp