Analysis
- max time kernel
125s - max time network
135s - platform
windows10_x64 - resource
win10 - submitted
20/08/2020, 13:31
General
- Target RFQ 17092018A.exe
- Size 414KB
- Sample200820-llz3pbaeea
- SHA256 69fd7fce357ff849a34d669c808cd75adbd9bdbe8999bc035d353a7f235c6169
Malware Config
Extracted
-
Protocol
smtp
-
Host
mail.yitaipackaging.com
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Port
587
-
Username
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Password
22799213
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 3 IoCs
- Drops file in Drivers directory 1 IoCs
- 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 1 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Modifies registry key 1 TTPs 1 IoCs
- Suspicious behavior: EnumeratesProcesses 6 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\RFQ 17092018A.exe"C:\Users\Admin\AppData\Local\Temp\RFQ 17092018A.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\DToRkOn" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7C4F.tmp"2⤵
- Creates scheduled task(s)
-
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C:\Users\Admin\AppData\Local\Temp\RFQ 17092018A.exe"{path}"2⤵
- Drops file in Drivers directory
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\REG.exeREG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System / v DisableTaskMgr / t REG_DWORD / d 1 / f3⤵
- Modifies registry key
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/2920-9-0x0000000008B20000-0x0000000008B68000-memory.dmp
memory/2920-3-0x0000000005990000-0x0000000005991000-memory.dmp
memory/2920-7-0x0000000005640000-0x0000000005644000-memory.dmp
memory/2920-8-0x00000000063E0000-0x000000000643C000-memory.dmp
memory/2920-0-0x0000000073980000-0x000000007406E000-memory.dmp
memory/2920-5-0x0000000005620000-0x0000000005621000-memory.dmp
memory/2920-4-0x0000000005570000-0x0000000005571000-memory.dmp
memory/2920-6-0x0000000005840000-0x0000000005841000-memory.dmp
memory/2920-1-0x0000000000B90000-0x0000000000B91000-memory.dmp
memory/3904-12-0x0000000000400000-0x000000000044C000-memory.dmp
memory/3904-15-0x0000000073980000-0x000000007406E000-memory.dmp
memory/3904-20-0x0000000005BC0000-0x0000000005BC1000-memory.dmp
memory/3904-21-0x0000000005C60000-0x0000000005C61000-memory.dmp