Analysis
- max time kernel
80s - max time network
68s - platform
windows7_x64 - resource
win7-20220812-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.
- 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 4 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 17 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⤵
- 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\tmpE58F.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER INQUIRY DB PO_#33344.exe"{path}"2⤵
-
-
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
tmpE58F.tmp
memory/996-64-0x0000000000400000-0x000000000043A000-memory.dmp
memory/996-66-0x0000000000400000-0x000000000043A000-memory.dmp
memory/996-71-0x0000000000400000-0x000000000043A000-memory.dmp
memory/996-69-0x0000000000400000-0x000000000043A000-memory.dmp
memory/996-65-0x0000000000400000-0x000000000043A000-memory.dmp
memory/996-61-0x0000000000400000-0x000000000043A000-memory.dmp
memory/996-62-0x0000000000400000-0x000000000043A000-memory.dmp
memory/1256-54-0x0000000001230000-0x00000000012D4000-memory.dmp
memory/1256-55-0x0000000075C61000-0x0000000075C63000-memory.dmp
memory/1256-56-0x00000000003D0000-0x00000000003F0000-memory.dmp
memory/1256-58-0x0000000001030000-0x000000000106C000-memory.dmp
memory/1256-57-0x0000000004FA0000-0x0000000005022000-memory.dmp