Analysis
- max time kernel
135s - max time network
139s - platform
windows10-2004_x64 - resource
win10v2004-20230220-en - resource tags
- submitted
30/03/2023, 13:09
General
- Target New PO #23546738.exe
- Size 707KB
- Sample230330-qdr79sec2x
- SHA256 0a8368bab522deb622eca5805bc7bc6da0d4a6a63fae959c41c22c7d0b5ffa63
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
us2.smtp.mailhostbox.com
-
Port
587
-
Username
-
Password
olu chu kwu 554
-
Email to
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
- 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 1 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\New PO #23546738.exe"C:\Users\Admin\AppData\Local\Temp\New PO #23546738.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\YJmfGxcN" /XML "C:\Users\Admin\AppData\Local\Temp\tmp20B7.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\New PO #23546738.exe"{path}"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
New PO #23546738.exe.log
tmp20B7.tmp
memory/2508-148-0x0000000005500000-0x0000000005510000-memory.dmp
memory/2508-144-0x0000000000400000-0x0000000000430000-memory.dmp
memory/2508-151-0x0000000005500000-0x0000000005510000-memory.dmp
memory/2508-150-0x00000000070F0000-0x00000000072B2000-memory.dmp
memory/2508-149-0x0000000006ED0000-0x0000000006F20000-memory.dmp
memory/2508-147-0x00000000053C0000-0x0000000005426000-memory.dmp
memory/4192-139-0x0000000005690000-0x00000000056A0000-memory.dmp
memory/4192-135-0x00000000059C0000-0x0000000005F64000-memory.dmp
memory/4192-134-0x0000000005300000-0x000000000539C000-memory.dmp
memory/4192-140-0x0000000005690000-0x00000000056A0000-memory.dmp
memory/4192-133-0x0000000000A70000-0x0000000000B26000-memory.dmp
memory/4192-136-0x00000000054B0000-0x0000000005542000-memory.dmp
memory/4192-138-0x00000000056A0000-0x00000000056F6000-memory.dmp
memory/4192-137-0x0000000005410000-0x000000000541A000-memory.dmp