Analysis
- max time kernel
52s - max time network
55s - platform
windows7_x64 - resource
win7-20220812-en - resource tags
- submitted
20/12/2022, 14:13
General
- Target CHALLAN COPY.exe
- Size 1.1MB
- Sample221220-rjed2ada2x
- SHA256 3dae8501068ac83bc8b9667a0d32dd2b7cb07815da52c2f20be99e6b54821339
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
host39.registrar-servers.com
-
Port
587
-
Username
-
Password
payment 12345
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
- Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- 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 13 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\CHALLAN COPY.exe"C:\Users\Admin\AppData\Local\Temp\CHALLAN COPY.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\dSXXtlEKuHmiGb" /XML "C:\Users\Admin\AppData\Local\Temp\tmp789A.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\CHALLAN COPY.exe"{path}"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
tmp789A.tmp
memory/976-64-0x0000000000400000-0x000000000043C000-memory.dmp
memory/976-71-0x0000000000400000-0x000000000043C000-memory.dmp
memory/976-69-0x0000000000400000-0x000000000043C000-memory.dmp
memory/976-66-0x0000000000400000-0x000000000043C000-memory.dmp
memory/976-65-0x0000000000400000-0x000000000043C000-memory.dmp
memory/976-61-0x0000000000400000-0x000000000043C000-memory.dmp
memory/976-62-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1504-54-0x0000000001370000-0x0000000001496000-memory.dmp
memory/1504-55-0x0000000075661000-0x0000000075663000-memory.dmp
memory/1504-56-0x00000000003C0000-0x00000000003D2000-memory.dmp
memory/1504-58-0x0000000000E60000-0x0000000000E9C000-memory.dmp
memory/1504-57-0x0000000005040000-0x00000000050C2000-memory.dmp