Analysis
- max time kernel
91s - max time network
134s - platform
windows10-2004_x64 - resource
win10v2004-20220414-en - submitted
27/05/2022, 02:36
General
- Target SecuriteInfo.com.W32.AIDetectNet.01.4585.exe
- Size 698KB
- Sample220527-c3l6nagdh4
- SHA256 00dbfa467ef14cab6eb8cd82c787f0694be146972fa82ecba2c243b170125e6f
Malware Config
Extracted
-
Protocol
smtp
-
Host
mail.perfecta-tn.com
-
Port
587
-
Username
-
Password
?Per#fec!ta?15
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.perfecta-tn.com
-
Port
587
-
Username
-
Password
?Per#fec!ta?15
-
Email to
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
- Drops file in Drivers directory 1 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- Adds Run key to start application 2 TTPs 1 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 3 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\SecuriteInfo.com.W32.AIDetectNet.01.4585.exe"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.W32.AIDetectNet.01.4585.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\aBYvHnivKRJds" /XML "C:\Users\Admin\AppData\Local\Temp\tmp426.tmp"2⤵
- Creates scheduled task(s)
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"{path}"2⤵
- Drops file in Drivers directory
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
tmp426.tmp
memory/1436-139-0x0000000000400000-0x000000000043A000-memory.dmp
memory/1436-140-0x00000000062A0000-0x0000000006306000-memory.dmp
memory/1436-141-0x00000000068B0000-0x0000000006900000-memory.dmp
memory/2580-130-0x00000000006A0000-0x0000000000754000-memory.dmp
memory/2580-131-0x0000000005070000-0x000000000510C000-memory.dmp
memory/2580-132-0x0000000005770000-0x0000000005D14000-memory.dmp
memory/2580-133-0x00000000051C0000-0x0000000005252000-memory.dmp
memory/2580-134-0x0000000005190000-0x000000000519A000-memory.dmp
memory/2580-135-0x0000000005410000-0x0000000005466000-memory.dmp