Analysis
- max time kernel
43s - max time network
45s - platform
windows7_x64 - resource
win7v20201028 - submitted
16/03/2021, 11:25
General
- Target OPEN01929291000_2021-03-15_07-28.exe
- Size 324KB
- Sample210316-rm5zexknvx
- SHA256 6296905cf4a331aa9a278c3df71c8e6cb3c1e60b48402696264aac0f4d0df659
Malware Config
Extracted
-
azorult
-
http://45.85.90.188/az1/wuvc/index.php
Signatures
- Azorult
An information stealer that was first discovered in 2016, targeting browsing history and passwords.
- Deletes itself 1 IoCs
- Loads dropped DLL 16 IoCs
- Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
- Reads local data of messenger clients 2 TTPs
Infostealers often target stored data of messaging applications, which can include saved credentials and account information.
- 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.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- 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 1 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\OPEN01929291000_2021-03-15_07-28.exe"C:\Users\Admin\AppData\Local\Temp\OPEN01929291000_2021-03-15_07-28.exe"1⤵
- 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 "OPEN01929291000_2021-03-15_07-28.exe"2⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\timeout.exeC:\Windows\system32\timeout.exe 33⤵
- Delays execution with timeout.exe
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/744-6-0x0000000000400000-0x0000000000420000-memory.dmp
memory/744-3-0x0000000075E51000-0x0000000075E53000-memory.dmp
memory/744-5-0x0000000000020000-0x000000000003E000-memory.dmp
memory/744-2-0x0000000002F30000-0x0000000002F41000-memory.dmp
memory/1788-4-0x000007FEF7590000-0x000007FEF780A000-memory.dmp