Analysis
- max time kernel
145s - max time network
130s - platform
windows10_x64 - resource
win10 - submitted
27/08/2020, 05:28
General
- Target holydami.exe
- Size 756KB
- Sample200827-e1fvye34l2
- SHA256 f79708792edddcae0ea7fe021bc5b38152eb3ecd5545a58cd9d244534539f893
Malware Config
Extracted
-
agenttesla
-
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
kuhedzolbibrtfmf
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 2 IoCs
- Executes dropped EXE 2 IoCs
- Obfuscated with Agile.Net obfuscator 1 IoCs
Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.
- 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.
- Adds Run key to start application 2 TTPs 2 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Suspicious behavior: EnumeratesProcesses 19 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 17 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\holydami.exe"C:\Users\Admin\AppData\Local\Temp\holydami.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"cmd.exe" /c REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v sf.exe /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\sef.exe"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\reg.exeREG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v sf.exe /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\sef.exe"3⤵
- Adds Run key to start application
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-
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\sef.exe"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\sef.exe"2⤵
- Executes dropped EXE
- 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\AddInProcess32.exe"C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe"3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/780-11-0x0000000073A70000-0x000000007415E000-memory.dmp
memory/780-17-0x0000000004F00000-0x0000000004F03000-memory.dmp
memory/2152-22-0x0000000073A70000-0x000000007415E000-memory.dmp
memory/2152-28-0x00000000063C0000-0x00000000063C1000-memory.dmp
memory/2152-27-0x0000000003150000-0x0000000003151000-memory.dmp
memory/2152-18-0x0000000000400000-0x000000000045A000-memory.dmp
memory/2152-26-0x0000000005880000-0x0000000005881000-memory.dmp
memory/3920-5-0x00000000051B0000-0x00000000051B1000-memory.dmp
memory/3920-1-0x00000000000A0000-0x00000000000A1000-memory.dmp
memory/3920-3-0x0000000000C90000-0x0000000000C9B000-memory.dmp
memory/3920-0-0x0000000073A70000-0x000000007415E000-memory.dmp
memory/3920-4-0x00000000055D0000-0x00000000055D1000-memory.dmp