Analysis
- max time kernel
70s - max time network
16s - platform
windows7_x64 - resource
win7 - submitted
16/09/2020, 10:00
General
- Target Payment Advice_PDF.cab.exe
- Size 868KB
- Sample200916-m3gd2wap96
- SHA256 4e99e7494741c7207f949ee918cc4f8c292d18b8120d335beeecf3ab2bb8d42d
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.davaobay.com.ph
-
Port
587
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Username
-
Password
p@ssw0rd
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 4 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
- 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 5 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 13 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Payment Advice_PDF.cab.exe"C:\Users\Admin\AppData\Local\Temp\Payment Advice_PDF.cab.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\zVuZdddqxKbk" /XML "C:\Users\Admin\AppData\Local\Temp\tmp93E6.tmp"2⤵
- Creates scheduled task(s)
-
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C:\Users\Admin\AppData\Local\Temp\Payment Advice_PDF.cab.exe"{path}"2⤵
- Drops file in Drivers directory
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1088-0-0x0000000073F10000-0x00000000745FE000-memory.dmp
memory/1088-1-0x00000000012C0000-0x00000000012C1000-memory.dmp
memory/1088-3-0x0000000000530000-0x0000000000533000-memory.dmp
memory/1088-4-0x0000000000DD0000-0x0000000000E1E000-memory.dmp
memory/1088-5-0x00000000048A0000-0x00000000048EB000-memory.dmp
memory/1976-11-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1976-13-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1976-14-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1976-15-0x0000000073F10000-0x00000000745FE000-memory.dmp