Analysis
- max time kernel
130s - max time network
122s - platform
windows7_x64 - resource
win7-en-20210920 - submitted
15/10/2021, 12:29
General
- Target Foreign_Bank Account Details.exe
- Size 840KB
- Sample211015-pnxeasbfck
- SHA256 ffbd9f2074b2eaa45f8562aa8cef8e7e71e8302789e4c6e199b2e15b67adc3c4
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
webmail.mdist.us
-
Port
587
-
Username
-
Password
Jg#4321
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 5 IoCs
- Drops file in Drivers directory 1 IoCs
- 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 16 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Foreign_Bank Account Details.exe"C:\Users\Admin\AppData\Local\Temp\Foreign_Bank Account Details.exe"1⤵
- 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\GVKfwsKVHDCC" /XML "C:\Users\Admin\AppData\Local\Temp\tmp586C.tmp"2⤵
- Creates scheduled task(s)
-
-
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
memory/1356-53-0x0000000000830000-0x0000000000831000-memory.dmp
memory/1356-55-0x0000000076A81000-0x0000000076A83000-memory.dmp
memory/1356-56-0x0000000004E10000-0x0000000004E11000-memory.dmp
memory/1356-57-0x0000000000230000-0x000000000023E000-memory.dmp
memory/1356-58-0x00000000050D0000-0x0000000005150000-memory.dmp
memory/1356-59-0x0000000002270000-0x00000000022DD000-memory.dmp
memory/1924-62-0x0000000000400000-0x0000000000470000-memory.dmp
memory/1924-63-0x0000000000400000-0x0000000000470000-memory.dmp
memory/1924-64-0x0000000000400000-0x0000000000470000-memory.dmp
memory/1924-65-0x0000000000400000-0x0000000000470000-memory.dmp
memory/1924-66-0x0000000000400000-0x0000000000470000-memory.dmp
memory/1924-68-0x0000000000400000-0x0000000000470000-memory.dmp
memory/1924-70-0x0000000004B50000-0x0000000004B51000-memory.dmp
memory/1924-71-0x0000000004B51000-0x0000000004B52000-memory.dmp