Analysis
- max time kernel
72s - max time network
147s - platform
windows10-2004_x64 - resource
win10v2004-20220414-en - submitted
18/05/2022, 06:03
General
- Target MDmlvV50riQvp4a.exe
- Size 696KB
- Sample220518-gr25ysebf5
- SHA256 b5bb2779f0527200837d519ee00b5a45d1cf8d40c2a4cba5031eb4fd14113271
Malware Config
Extracted
-
Protocol
smtp
-
Host
smtp.vhs-tr.com
-
Port
587
-
Username
-
Password
*!M!Iq)0
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
smtp.vhs-tr.com
-
Port
587
-
Username
-
Password
*!M!Iq)0
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 11 IoCs
- Suspicious use of AdjustPrivilegeToken 4 IoCs
- Suspicious use of WriteProcessMemory 17 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\MDmlvV50riQvp4a.exe"C:\Users\Admin\AppData\Local\Temp\MDmlvV50riQvp4a.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- 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\Local\Temp\MDmlvV50riQvp4a.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\AucZuGK.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\AucZuGK" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7F90.tmp"2⤵
- Creates scheduled task(s)
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-
C:\Users\Admin\AppData\Local\Temp\MDmlvV50riQvp4a.exe"C:\Users\Admin\AppData\Local\Temp\MDmlvV50riQvp4a.exe"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
powershell.exe.log
StartupProfileData-NonInteractive
tmp7F90.tmp
memory/1092-157-0x00000000079D0000-0x00000000079DE000-memory.dmp
memory/1092-150-0x00000000716E0000-0x000000007172C000-memory.dmp
memory/1092-147-0x0000000006A60000-0x0000000006A92000-memory.dmp
memory/1092-159-0x0000000007AC0000-0x0000000007AC8000-memory.dmp
memory/1092-151-0x0000000006A40000-0x0000000006A5E000-memory.dmp
memory/1092-153-0x00000000077A0000-0x00000000077BA000-memory.dmp
memory/1092-140-0x0000000005590000-0x0000000005BB8000-memory.dmp
memory/1092-155-0x0000000007A20000-0x0000000007AB6000-memory.dmp
memory/1092-142-0x00000000053D0000-0x00000000053F2000-memory.dmp
memory/1376-145-0x0000000000400000-0x000000000043A000-memory.dmp
memory/1376-156-0x00000000065F0000-0x0000000006640000-memory.dmp
memory/1628-130-0x0000000000F70000-0x0000000001022000-memory.dmp
memory/1628-135-0x0000000009F00000-0x0000000009F66000-memory.dmp
memory/1628-134-0x0000000005AA0000-0x0000000005AAA000-memory.dmp
memory/1628-133-0x0000000005B20000-0x0000000005BBC000-memory.dmp
memory/1628-132-0x0000000005A00000-0x0000000005A92000-memory.dmp
memory/1628-131-0x00000000060D0000-0x0000000006674000-memory.dmp
memory/3552-146-0x0000000005D10000-0x0000000005D2E000-memory.dmp
memory/3552-154-0x0000000007090000-0x000000000709A000-memory.dmp
memory/3552-152-0x0000000007670000-0x0000000007CEA000-memory.dmp
memory/3552-148-0x0000000006CD0000-0x0000000006D02000-memory.dmp
memory/3552-149-0x00000000716E0000-0x000000007172C000-memory.dmp
memory/3552-158-0x0000000007360000-0x000000000737A000-memory.dmp
memory/3552-143-0x0000000005520000-0x0000000005586000-memory.dmp
memory/3552-137-0x0000000004740000-0x0000000004776000-memory.dmp