Analysis
- max time kernel
72s - max time network
154s - platform
windows10-2004_x64 - resource
win10v2004-20220414-en - submitted
19/04/2022, 07:48
General
- Target Swift Potvrda OUT210073640.exe
- Size 493KB
- Sample220419-jm4jbsdhd8
- SHA256 53fce8aab41263385b29397ddc1c46ea6de10edff1a1de180ceeac03d4e7eed6
Malware Config
Extracted
-
Protocol
smtp
-
Host
mail.teknovateplas.com
-
Port
587
-
Username
-
Password
tekmktg2020$
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.teknovateplas.com
-
Port
587
-
Username
-
Password
tekmktg2020$
-
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). 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\Swift Potvrda OUT210073640.exe"C:\Users\Admin\AppData\Local\Temp\Swift Potvrda OUT210073640.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\NEGcXGQSjGzFY" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2B46.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\Swift Potvrda OUT210073640.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
Swift Potvrda OUT210073640.exe.log
tmp2B46.tmp
memory/3356-138-0x0000000000400000-0x000000000043A000-memory.dmp
memory/3356-140-0x0000000005A60000-0x0000000005AC6000-memory.dmp
memory/3356-141-0x00000000060F0000-0x0000000006140000-memory.dmp
memory/4528-130-0x00000000005C0000-0x0000000000642000-memory.dmp
memory/4528-131-0x00000000054C0000-0x0000000005A64000-memory.dmp
memory/4528-132-0x0000000004FF0000-0x0000000005082000-memory.dmp
memory/4528-133-0x0000000005130000-0x00000000051CC000-memory.dmp
memory/4528-134-0x0000000005090000-0x000000000509A000-memory.dmp