Analysis
- max time kernel
62s - max time network
108s - platform
windows10_x64 - resource
win10v20201028 - submitted
09/11/2020, 19:41
General
- Target SKMBT-2635278339.exe
- Size 468KB
- Sample201109-vgeywsac6j
- SHA256 4e00227920cf24a54644e3d72cf89d01900d591d138eec8dc9eb9682bdac788b
Malware Config
Extracted
-
Protocol
smtp
-
Host
mail.technotiempo.com
-
Port
587
-
Username
-
Password
HOLDing#123
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.technotiempo.com
-
Port
587
-
Username
-
Password
HOLDing#123
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- CoreEntity .NET Packer 1 IoCs
A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.
- AgentTesla Payload 2 IoCs
- rezer0 1 IoCs
Detects ReZer0, a packer with multiple versions used in various campaigns.
- 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.
- 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 use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 17 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\SKMBT-2635278339.exe"C:\Users\Admin\AppData\Local\Temp\SKMBT-2635278339.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\DHrWcxWswQVGIT" /XML "C:\Users\Admin\AppData\Local\Temp\tmp70FF.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\SKMBT-2635278339.exe"{path}"2⤵
-
-
C:\Users\Admin\AppData\Local\Temp\SKMBT-2635278339.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\netsh.exe"netsh" wlan show profile3⤵
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/4224-14-0x00000000732D0000-0x00000000739BE000-memory.dmp
memory/4224-11-0x0000000000400000-0x0000000000452000-memory.dmp
memory/4224-19-0x00000000051C0000-0x00000000051C1000-memory.dmp
memory/4224-20-0x0000000005C80000-0x0000000005C81000-memory.dmp
memory/4756-6-0x0000000004B10000-0x0000000004B13000-memory.dmp
memory/4756-7-0x0000000006D80000-0x0000000006DD3000-memory.dmp
memory/4756-8-0x00000000080F0000-0x00000000080F1000-memory.dmp
memory/4756-0-0x00000000732D0000-0x00000000739BE000-memory.dmp
memory/4756-4-0x0000000004990000-0x0000000004991000-memory.dmp
memory/4756-3-0x0000000004E90000-0x0000000004E91000-memory.dmp
memory/4756-5-0x0000000004960000-0x0000000004961000-memory.dmp
memory/4756-1-0x00000000000C0000-0x00000000000C1000-memory.dmp