Analysis
- max time kernel
79s - max time network
102s - platform
windows10_x64 - resource
win10v20201028 - submitted
13/11/2020, 15:17
General
- Target 28913a04e86d1a2f8bcab9da81355bc4566d63747c2d656b6d6ae42830163166.exe
- Size 827KB
- Sample201113-8zdya5l79x
- SHA256 28913a04e86d1a2f8bcab9da81355bc4566d63747c2d656b6d6ae42830163166
Malware Config
Extracted
-
Protocol
smtp
-
Host
smtp.karhteck.com
-
Port
587
-
Username
-
Password
QaCEtje9
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
smtp.karhteck.com
-
Port
587
-
Username
-
Password
QaCEtje9
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 2 IoCs
- Looks for VirtualBox Guest Additions in registry 2 TTPs
- Looks for VMWare Tools registry key 2 TTPs
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
- 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.
- Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
- Suspicious use of SetThreadContext 1 IoCs
- Suspicious behavior: EnumeratesProcesses 5 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\28913a04e86d1a2f8bcab9da81355bc4566d63747c2d656b6d6ae42830163166.exe"C:\Users\Admin\AppData\Local\Temp\28913a04e86d1a2f8bcab9da81355bc4566d63747c2d656b6d6ae42830163166.exe"1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\28913a04e86d1a2f8bcab9da81355bc4566d63747c2d656b6d6ae42830163166.exe"C:\Users\Admin\AppData\Local\Temp\28913a04e86d1a2f8bcab9da81355bc4566d63747c2d656b6d6ae42830163166.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/724-12-0x0000000000400000-0x0000000000466000-memory.dmp
memory/724-20-0x00000000059C0000-0x00000000059C1000-memory.dmp
memory/724-15-0x00000000739D0000-0x00000000740BE000-memory.dmp
memory/4800-5-0x0000000005670000-0x0000000005671000-memory.dmp
memory/4800-7-0x00000000057D0000-0x00000000057D1000-memory.dmp
memory/4800-8-0x0000000005610000-0x000000000561B000-memory.dmp
memory/4800-9-0x00000000063F0000-0x0000000006487000-memory.dmp
memory/4800-10-0x0000000006500000-0x0000000006562000-memory.dmp
memory/4800-11-0x0000000001180000-0x0000000001181000-memory.dmp
memory/4800-6-0x00000000055E0000-0x00000000055E1000-memory.dmp
memory/4800-0-0x00000000739D0000-0x00000000740BE000-memory.dmp
memory/4800-4-0x0000000005AD0000-0x0000000005AD1000-memory.dmp
memory/4800-3-0x0000000005530000-0x0000000005531000-memory.dmp
memory/4800-1-0x00000000008D0000-0x00000000008D1000-memory.dmp