Analysis
- max time kernel
61s - max time network
110s - platform
windows10_x64 - resource
win10v20201028 - submitted
09/11/2020, 19:48
General
- Target 0020027409011933_05-13-2020.exe
- Size 402KB
- Sample201109-2a2b4haafe
- SHA256 3e2931cb793d52c5e3253abd7efa9c5c5da9fe766cc93a012ff784fe48694c7a
Malware Config
Extracted
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Protocol
smtp
-
Host
mail.elhelado.com.mx
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Port
587
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Username
-
Password
4042Ad@+
Extracted
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agenttesla
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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
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C:\Users\Admin\AppData\Local\Temp\0020027409011933_05-13-2020.exe"C:\Users\Admin\AppData\Local\Temp\0020027409011933_05-13-2020.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\HyjXbggHLexDHw" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4972.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\0020027409011933_05-13-2020.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/2696-20-0x0000000005F30000-0x0000000005F31000-memory.dmp
memory/2696-19-0x0000000005380000-0x0000000005381000-memory.dmp
memory/2696-14-0x0000000073BA0000-0x000000007428E000-memory.dmp
memory/2696-11-0x0000000000400000-0x0000000000450000-memory.dmp
memory/3944-5-0x0000000005240000-0x0000000005241000-memory.dmp
memory/3944-8-0x0000000008A90000-0x0000000008A91000-memory.dmp
memory/3944-7-0x0000000008990000-0x00000000089E1000-memory.dmp
memory/3944-6-0x00000000055F0000-0x00000000055F3000-memory.dmp
memory/3944-0-0x0000000073BA0000-0x000000007428E000-memory.dmp
memory/3944-4-0x00000000052C0000-0x00000000052C1000-memory.dmp
memory/3944-3-0x0000000005720000-0x0000000005721000-memory.dmp
memory/3944-1-0x0000000000860000-0x0000000000861000-memory.dmp