Analysis
- max time kernel
135s - max time network
136s - platform
windows7_x64 - resource
win7v20201028 - submitted
09/11/2020, 19:33
General
- Target gunzipped.exe
- Size 622KB
- Sample201109-eaa7mrglpn
- SHA256 6338bfae5441345e2ae7f134d8a18349bf1ebe26bc772a7fda83b775a3693d58
Malware Config
Extracted
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agenttesla
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Protocol
smtp
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Host
smtp.yandex.com
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Port
587
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Username
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Password
jonh-dickson247
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 4 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
- Suspicious behavior: EnumeratesProcesses 5 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 13 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\gunzipped.exe"C:\Users\Admin\AppData\Local\Temp\gunzipped.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\gunzipped.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- 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
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Downloads
memory/1904-0-0x0000000073AF0000-0x00000000741DE000-memory.dmp
memory/1904-1-0x0000000001090000-0x0000000001091000-memory.dmp
memory/1904-3-0x0000000000340000-0x000000000039B000-memory.dmp
memory/1904-22-0x0000000000480000-0x0000000000483000-memory.dmp
memory/1904-23-0x00000000049A0000-0x00000000049F1000-memory.dmp
memory/1928-24-0x0000000000400000-0x0000000000450000-memory.dmp
memory/1928-26-0x0000000000400000-0x0000000000450000-memory.dmp
memory/1928-27-0x0000000000400000-0x0000000000450000-memory.dmp
memory/1928-28-0x0000000073AF0000-0x00000000741DE000-memory.dmp