Analysis
- max time kernel
126s - max time network
146s - platform
windows7_x64 - resource
win7-20220414-en - submitted
07/07/2022, 12:05
General
- Target d3a2d86c77c2ee229ba0e1b8cbc45442.exe
- Size 88KB
- Sample220707-n86b9saag4
- SHA256 7887aebb0bce6a49dca946ca99b69c3fad43bf7b66eb94a5491c8fc20847d52f
Malware Config
Extracted
-
Protocol
smtp
-
Host
us2.smtp.mailhostbox.com
-
Port
587
-
Username
-
Password
xvdUCau3
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
us2.smtp.mailhostbox.com
-
Port
587
-
Username
-
Password
xvdUCau3
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- 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
- Adds Run key to start application 2 TTPs 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Suspicious behavior: EnumeratesProcesses 3 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 4 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\d3a2d86c77c2ee229ba0e1b8cbc45442.exe"C:\Users\Admin\AppData\Local\Temp\d3a2d86c77c2ee229ba0e1b8cbc45442.exe"1⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMgAwAA==2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/780-54-0x0000000000380000-0x000000000039C000-memory.dmp
memory/780-55-0x0000000074E91000-0x0000000074E93000-memory.dmp
memory/780-56-0x0000000004E10000-0x0000000004E8E000-memory.dmp
memory/780-57-0x0000000000700000-0x0000000000742000-memory.dmp
memory/780-58-0x0000000004ED0000-0x0000000004F1C000-memory.dmp
memory/780-64-0x0000000004F20000-0x0000000004F5A000-memory.dmp
memory/1500-61-0x0000000070020000-0x00000000705CB000-memory.dmp
memory/1500-62-0x0000000070020000-0x00000000705CB000-memory.dmp
memory/1500-63-0x0000000070020000-0x00000000705CB000-memory.dmp