Analysis
- max time kernel
51s - max time network
110s - platform
windows10_x64 - resource
win10 - submitted
27/10/2020, 10:18
General
- Target Bidvest Order RFQ BV322910098ZA.PDF.gz.exe
- Size 564KB
- Sample201027-hjgdsfaqws
- SHA256 bca4b6e9f14cb4d84674d2f4db286e0ea692f68e8b1d906d04ced807556c6174
Malware Config
Extracted
-
azorult
-
http://45.145.185.111/owa/index.php
Signatures
- Azorult
An information stealer that was first discovered in 2016, targeting browsing history and passwords.
- Loads dropped DLL 4 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.
- Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- JavaScript code in executable 1 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Delays execution with timeout.exe 1 IoCs
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of WriteProcessMemory 15 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Bidvest Order RFQ BV322910098ZA.PDF.gz.exe"C:\Users\Admin\AppData\Local\Temp\Bidvest Order RFQ BV322910098ZA.PDF.gz.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\Bidvest Order RFQ BV322910098ZA.PDF.gz.exe"{path}"2⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c C:\Windows\system32\timeout.exe 3 & del "Bidvest Order RFQ BV322910098ZA.PDF.gz.exe"3⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\timeout.exeC:\Windows\system32\timeout.exe 34⤵
- Delays execution with timeout.exe
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/2628-10-0x0000000000400000-0x0000000000420000-memory.dmp
memory/2628-12-0x0000000000400000-0x0000000000420000-memory.dmp
memory/3892-5-0x0000000006EB0000-0x0000000006EB1000-memory.dmp
memory/3892-9-0x000000000A560000-0x000000000A561000-memory.dmp
memory/3892-8-0x0000000008B40000-0x0000000008BA2000-memory.dmp
memory/3892-7-0x00000000072B0000-0x00000000072C6000-memory.dmp
memory/3892-6-0x0000000006E90000-0x0000000006E91000-memory.dmp
memory/3892-0-0x00000000737D0000-0x0000000073EBE000-memory.dmp
memory/3892-4-0x00000000072D0000-0x00000000072D1000-memory.dmp
memory/3892-3-0x0000000006D60000-0x0000000006DCF000-memory.dmp
memory/3892-1-0x0000000000070000-0x0000000000071000-memory.dmp