Analysis
- max time kernel
148s - max time network
23s - platform
windows7_x64 - resource
win7-en-20210920 - submitted
27/09/2021, 14:09
General
- Target NR-00353647.scr
- Size 874KB
- Sample210927-rf46aahbgp
- SHA256 9ed5d707dbb09f0dd34e0bce5a9dbba3a9f4e61748b0aa9952f3700a8c418208
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.dellvidi.com
-
Port
587
-
Username
-
Password
merchant2####
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 3 IoCs
- 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.
- 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 5 IoCs
- Suspicious behavior: RenamesItself 1 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 13 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\NR-00353647.scr"C:\Users\Admin\AppData\Local\Temp\NR-00353647.scr" /S1⤵
- 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\pvJhOGiNKXJFn" /XML "C:\Users\Admin\AppData\Local\Temp\tmp863F.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\NR-00353647.scr"C:\Users\Admin\AppData\Local\Temp\NR-00353647.scr"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/848-53-0x0000000000930000-0x0000000000931000-memory.dmp
memory/848-55-0x0000000004D70000-0x0000000004D71000-memory.dmp
memory/848-56-0x0000000000490000-0x0000000000497000-memory.dmp
memory/848-57-0x0000000005AD0000-0x0000000005B35000-memory.dmp
memory/848-58-0x0000000002000000-0x0000000002039000-memory.dmp
memory/1604-60-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1604-62-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1604-64-0x00000000043A0000-0x00000000043A1000-memory.dmp