Analysis
- max time kernel
63s - platform
windows10-2004_x64 - resource
win10v2004-20230703-en - resource tags
- submitted
05/07/2023, 16:23
General
- Target rNewPO--KHN40402AUR1B-2-70K.exe
- Size 899KB
- Sample230705-tvsf5sfe6v
- SHA256 cd810234cb9e3102129a4319689d447b6a4433c64fda2c2ec3ed4403544155df
Malware Config
Extracted
-
agenttesla
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Protocol
smtp
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Host
mail.vista-logistics.com
-
Port
587
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Username
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Password
Y;RJpw&oI(Rw
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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
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- 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 5 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\rNewPO--KHN40402AUR1B-2-70K.exe"C:\Users\Admin\AppData\Local\Temp\rNewPO--KHN40402AUR1B-2-70K.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\aCmBbSQaK" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8306.tmp"2⤵
- Creates scheduled task(s)
-
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C:\Users\Admin\AppData\Local\Temp\rNewPO--KHN40402AUR1B-2-70K.exe"{path}"2⤵
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C:\Users\Admin\AppData\Local\Temp\rNewPO--KHN40402AUR1B-2-70K.exe"{path}"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
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Downloads
rNewPO--KHN40402AUR1B-2-70K.exe.log
tmp8306.tmp
memory/1120-143-0x0000000000400000-0x0000000000430000-memory.dmp
memory/1120-150-0x0000000005290000-0x00000000052A0000-memory.dmp
memory/1120-149-0x00000000061F0000-0x00000000063B2000-memory.dmp
memory/1120-148-0x0000000005FD0000-0x0000000006020000-memory.dmp
memory/1120-147-0x0000000005290000-0x00000000052A0000-memory.dmp
memory/1120-146-0x00000000051C0000-0x0000000005226000-memory.dmp
memory/4516-136-0x00000000058A0000-0x000000000593C000-memory.dmp
memory/4516-139-0x0000000005B00000-0x0000000005B10000-memory.dmp
memory/4516-138-0x0000000005B00000-0x0000000005B10000-memory.dmp
memory/4516-137-0x0000000005780000-0x000000000578A000-memory.dmp
memory/4516-133-0x0000000000CE0000-0x0000000000DC8000-memory.dmp
memory/4516-135-0x0000000005800000-0x0000000005892000-memory.dmp
memory/4516-134-0x0000000005D10000-0x00000000062B4000-memory.dmp