Analysis
- max time kernel
146s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
05/09/2022, 22:03
General
- Target PURCHASE ORDER INQUIRY DB PO_#33344.exe
- Size 629KB
- Sample220905-1ybfcsafb7
- SHA256 47d3beec8dd10da7bf293d1f1300c992e105d41bcfb317bbb318252759c2b020
Malware Config
Extracted
-
agenttesla
-
https://api.telegram.org/bot5386855759:AAEl2-GkOAoImBPtsv5CaQujyh01bpxVfR8/sendDocument
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- 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\PURCHASE ORDER INQUIRY DB PO_#33344.exe"C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER INQUIRY DB PO_#33344.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\aQBShi" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE295.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER INQUIRY DB PO_#33344.exe"{path}"2⤵
- 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
PURCHASE ORDER INQUIRY DB PO_#33344.exe.log
tmpE295.tmp
memory/1548-140-0x0000000000400000-0x000000000043A000-memory.dmp
memory/1548-142-0x0000000006210000-0x0000000006276000-memory.dmp
memory/1548-143-0x0000000006900000-0x0000000006950000-memory.dmp
memory/2880-132-0x0000000000BB0000-0x0000000000C54000-memory.dmp
memory/2880-133-0x0000000005BB0000-0x0000000006154000-memory.dmp
memory/2880-134-0x0000000005600000-0x0000000005692000-memory.dmp
memory/2880-135-0x0000000005740000-0x00000000057DC000-memory.dmp
memory/2880-136-0x00000000055E0000-0x00000000055EA000-memory.dmp