Analysis
- max time kernel
136s - max time network
154s - platform
windows10-2004_x64 - resource
win10v2004-20220901-en - resource tags
- submitted
05/12/2022, 02:29
General
- Target SecuriteInfo.com.Win32.PWSX-gen.26322.5435.exe
- Size 1.1MB
- Sample221205-cykr2agf38
- SHA256 8833ef255933b07f1ae298a7b06cc6b87b664eaa44f7c197a84a097f0dc0889b
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.empoloshotel.co.ke
-
Port
587
-
Username
-
Password
9n4NJdr*&($E
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 4 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.26322.5435.exe"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.26322.5435.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\zHTOttCpHVWqSv" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1B5.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.26322.5435.exe"{path}"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
SecuriteInfo.com.Win32.PWSX-gen.26322.5435.exe.log
tmp1B5.tmp
memory/2264-140-0x0000000000400000-0x000000000043C000-memory.dmp
memory/2264-142-0x0000000005D60000-0x0000000005DC6000-memory.dmp
memory/2264-143-0x00000000069B0000-0x0000000006A00000-memory.dmp
memory/4896-132-0x0000000000CC0000-0x0000000000DDA000-memory.dmp
memory/4896-133-0x0000000005E40000-0x00000000063E4000-memory.dmp
memory/4896-134-0x0000000005790000-0x0000000005822000-memory.dmp
memory/4896-135-0x0000000005890000-0x000000000592C000-memory.dmp
memory/4896-136-0x0000000005770000-0x000000000577A000-memory.dmp