Analysis
- max time kernel
85s - max time network
127s - platform
windows10-2004_x64 - resource
win10v2004-20220414-en - submitted
25/04/2022, 16:19
General
- Target 4a6faac7740c307fd5a0e23e0f5ea222.exe
- Size 695KB
- Sample220425-tsglvsghbp
- SHA256 4154bbb1bc580a874dc084a8017a6bb5a6243c29cddbf47dee3d0ca768b5936f
Malware Config
Extracted
-
Protocol
smtp
-
Host
smtp.reiscoymarcos.com
-
Port
587
-
Username
-
Password
Freespace88@
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
smtp.reiscoymarcos.com
-
Port
587
-
Username
-
Password
Freespace88@
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- suricata: ET MALWARE AgentTesla Exfil Via SMTP
suricata: ET MALWARE AgentTesla Exfil Via SMTP
- 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
- 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 14 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\4a6faac7740c307fd5a0e23e0f5ea222.exe"C:\Users\Admin\AppData\Local\Temp\4a6faac7740c307fd5a0e23e0f5ea222.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\jGjAJo.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\jGjAJo" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9441.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\4a6faac7740c307fd5a0e23e0f5ea222.exe"C:\Users\Admin\AppData\Local\Temp\4a6faac7740c307fd5a0e23e0f5ea222.exe"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
Loading Replay Monitor...
Downloads
tmp9441.tmp
memory/408-131-0x0000000005560000-0x0000000005B04000-memory.dmp
memory/408-132-0x0000000005050000-0x00000000050E2000-memory.dmp
memory/408-133-0x00000000051F0000-0x00000000051FA000-memory.dmp
memory/408-134-0x00000000099C0000-0x0000000009A5C000-memory.dmp
memory/408-135-0x0000000009D20000-0x0000000009D86000-memory.dmp
memory/408-130-0x00000000005D0000-0x0000000000684000-memory.dmp
memory/3452-148-0x0000000006EC0000-0x0000000006EDE000-memory.dmp
memory/3452-147-0x00000000705F0000-0x000000007063C000-memory.dmp
memory/3452-140-0x0000000005AA0000-0x00000000060C8000-memory.dmp
memory/3452-156-0x0000000007F50000-0x0000000007F58000-memory.dmp
memory/3452-155-0x0000000007F70000-0x0000000007F8A000-memory.dmp
memory/3452-143-0x0000000005A50000-0x0000000005A72000-memory.dmp
memory/3452-144-0x00000000061C0000-0x0000000006226000-memory.dmp
memory/3452-145-0x0000000006920000-0x000000000693E000-memory.dmp
memory/3452-146-0x0000000006EE0000-0x0000000006F12000-memory.dmp
memory/3452-138-0x0000000002FE0000-0x0000000003016000-memory.dmp
memory/3452-154-0x0000000007E60000-0x0000000007E6E000-memory.dmp
memory/3452-150-0x0000000008280000-0x00000000088FA000-memory.dmp
memory/3452-151-0x0000000007C30000-0x0000000007C4A000-memory.dmp
memory/3452-152-0x0000000007CA0000-0x0000000007CAA000-memory.dmp
memory/3452-153-0x0000000007EB0000-0x0000000007F46000-memory.dmp
memory/3956-149-0x00000000062E0000-0x0000000006330000-memory.dmp
memory/3956-142-0x0000000000400000-0x000000000043A000-memory.dmp