Analysis
- max time kernel
119s - max time network
123s - platform
windows10_x64 - resource
win10-en-20211014 - submitted
01/11/2021, 03:47
Static task
static1
Behavioral task
behavioral1
Sample
dffc949523ddd2ac73b8a498979c836a.exe
Resource
win7-en-20211014
Behavioral task
behavioral2
Sample
dffc949523ddd2ac73b8a498979c836a.exe
Resource
win10-en-20211014
General
- Target dffc949523ddd2ac73b8a498979c836a.exe
- Size 345KB
- Sample211101-eb7z6aghf3
- SHA256 da0fd8df1c9f16dfcff0e35a20d287d9985cd3c81ac08f370b5121376862154e
- MD5 dffc949523ddd2ac73b8a498979c836a
- SHA1 84063141d854765b1991529000092a7f285a82e7
- SHA512 104f9b9c26d2c88f5369145ced8ffd6a816596f345687b7a1f92daceab5cdb0be4db2c86bc1e2e4743665bec7af9cc905ab6f19ea7e89604ce6b74a145b3caf8
- MD5 SHA1 SHA512
Malware Config
Extracted
-
azorult
-
http://45.133.1.13/xsaz/index.php
Signatures
- Azorult
An information stealer that was first discovered in 2016, targeting browsing history and passwords.
- Loads dropped DLL 4 IoCs
pid Process 584 dffc949523ddd2ac73b8a498979c836a.exe 584 dffc949523ddd2ac73b8a498979c836a.exe 584 dffc949523ddd2ac73b8a498979c836a.exe 584 dffc949523ddd2ac73b8a498979c836a.exe - 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 Microsoft Outlook profiles 1 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook dffc949523ddd2ac73b8a498979c836a.exe Key opened \REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook dffc949523ddd2ac73b8a498979c836a.exe Key opened \REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook dffc949523ddd2ac73b8a498979c836a.exe - 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.
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 dffc949523ddd2ac73b8a498979c836a.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString dffc949523ddd2ac73b8a498979c836a.exe - Delays execution with timeout.exe 1 IoCs
pid Process 1912 timeout.exe - Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 584 dffc949523ddd2ac73b8a498979c836a.exe 584 dffc949523ddd2ac73b8a498979c836a.exe - Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 584 wrote to memory of 3892 584 dffc949523ddd2ac73b8a498979c836a.exe 68 PID 584 wrote to memory of 3892 584 dffc949523ddd2ac73b8a498979c836a.exe 68 PID 584 wrote to memory of 3892 584 dffc949523ddd2ac73b8a498979c836a.exe 68 PID 3892 wrote to memory of 1912 3892 cmd.exe 70 PID 3892 wrote to memory of 1912 3892 cmd.exe 70 PID 3892 wrote to memory of 1912 3892 cmd.exe 70 - outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook dffc949523ddd2ac73b8a498979c836a.exe - outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook dffc949523ddd2ac73b8a498979c836a.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\dffc949523ddd2ac73b8a498979c836a.exe"C:\Users\Admin\AppData\Local\Temp\dffc949523ddd2ac73b8a498979c836a.exe"1⤵
- Loads dropped DLL
- Accesses Microsoft Outlook profiles
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:584 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c C:\Windows\system32\timeout.exe 3 & del "dffc949523ddd2ac73b8a498979c836a.exe"2⤵
- Suspicious use of WriteProcessMemory
PID:3892 -
C:\Windows\SysWOW64\timeout.exeC:\Windows\system32\timeout.exe 33⤵
- Delays execution with timeout.exe
PID:1912
-
-