Analysis
- max time kernel
140s - max time network
140s - platform
windows7_x64 - resource
win7-en - submitted
15/09/2021, 04:32
General
- Target Halkbank01.exe
- Size 472KB
- Sample210915-e5zwmsgff2
- SHA256 ddcaa3b14d33d6d27dc1467709b05d69df392d4c7d8d2699beda137ea237a224
Malware Config
Extracted
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azorult
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http://31.210.20.16/panel1/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.
- Suspicious use of SetThreadContext 1 IoCs
- 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.
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Delays execution with timeout.exe 1 IoCs
- Suspicious behavior: EnumeratesProcesses 8 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 22 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\Halkbank01.exe"C:\Users\Admin\AppData\Local\Temp\Halkbank01.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\DDHAqpuflAu" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD9AC.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\Halkbank01.exe"C:\Users\Admin\AppData\Local\Temp\Halkbank01.exe"2⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c C:\Windows\system32\timeout.exe 3 & del "Halkbank01.exe"3⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
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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/1384-62-0x0000000000400000-0x0000000000420000-memory.dmp
memory/1384-61-0x0000000075231000-0x0000000075233000-memory.dmp
memory/1384-59-0x0000000000400000-0x0000000000420000-memory.dmp
memory/1656-55-0x0000000001070000-0x0000000001071000-memory.dmp
memory/1656-56-0x0000000000CF0000-0x0000000000D40000-memory.dmp
memory/1656-54-0x0000000000930000-0x0000000000937000-memory.dmp
memory/1656-52-0x0000000001100000-0x0000000001101000-memory.dmp
memory/1656-57-0x0000000000E40000-0x0000000000E5E000-memory.dmp