Analysis
- max time kernel
54s - max time network
145s - platform
windows10_x64 - resource
win10v20201028 - submitted
09/11/2020, 19:56
General
- Target 11065-AMM0000557423-736065949.exe
- Size 455KB
- Sample201109-kckd83sp86
- SHA256 e390ee24fef5920157d9c28af8d232cd542f30b193481fef6fffb007631f374b
Malware Config
Extracted
-
Protocol
smtp
-
Host
mail.elhelado.com.mx
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Port
587
-
Username
-
Password
4042Ad@+
Extracted
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agenttesla
-
Protocol
smtp
-
Host
mail.elhelado.com.mx
-
Port
587
-
Username
-
Password
4042Ad@+
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 3 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\11065-AMM0000557423-736065949.exe"C:\Users\Admin\AppData\Local\Temp\11065-AMM0000557423-736065949.exe"1⤵
- 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\RTJBQAXh" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5CBC.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\11065-AMM0000557423-736065949.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\netsh.exe"netsh" wlan show profile3⤵
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/1056-1-0x0000000000A90000-0x0000000000A91000-memory.dmp
memory/1056-3-0x0000000005B40000-0x0000000005B41000-memory.dmp
memory/1056-4-0x0000000005520000-0x0000000005521000-memory.dmp
memory/1056-5-0x0000000003130000-0x0000000003131000-memory.dmp
memory/1056-6-0x0000000009020000-0x0000000009021000-memory.dmp
memory/1056-7-0x0000000008FB0000-0x0000000008FB2000-memory.dmp
memory/1056-8-0x00000000091C0000-0x0000000009211000-memory.dmp
memory/1056-0-0x0000000073BE0000-0x00000000742CE000-memory.dmp
memory/3820-11-0x0000000000400000-0x0000000000450000-memory.dmp
memory/3820-13-0x0000000073BE0000-0x00000000742CE000-memory.dmp
memory/3820-18-0x0000000004F40000-0x0000000004F41000-memory.dmp
memory/3820-19-0x0000000005AF0000-0x0000000005AF1000-memory.dmp