Analysis
- max time kernel
43s - max time network
136s - platform
windows10_x64 - resource
win10-en - submitted
10/09/2021, 08:26
Static task
static1
Behavioral task
behavioral1
Sample
Payment slip.exe
Resource
win7-en
General
- Target Payment slip.exe
- Size 434KB
- Sample210910-kbwvsachan
- SHA256 c331ec3b22d99e009996d930b6e8f4af478918e947fe3f0d0cb26d0ca2067aaa
- MD5 dd1b4dcbb0af0121a7ab10e4cde1169e
- SHA1 501c07d2843247e53501b4f74391f4ee96deb730
- SHA512 43fb73830369407acf872d1a403a765b2e0924714c0bb3a236224874c21c31ec4a69a4a9ab2f8fcf79be7c7b83544494919251564a6e2fb8a95c68c6792cb0d9
- MD5 SHA1 SHA512
Malware Config
Extracted
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azorult
-
http://193.247.144.115/index.php
Signatures
- Azorult
An information stealer that was first discovered in 2016, targeting browsing history and passwords.
- suricata: ET MALWARE AZORult v3.2 Server Response M3
suricata: ET MALWARE AZORult v3.2 Server Response M3
- suricata: ET MALWARE Win32/AZORult V3.2 Client Checkin M17
suricata: ET MALWARE Win32/AZORult V3.2 Client Checkin M17
- Loads dropped DLL 4 IoCs
pid Process 4600 Payment slip.exe 4600 Payment slip.exe 4600 Payment slip.exe 4600 Payment slip.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.
- 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
description pid Process procid_target PID 4740 set thread context of 4600 4740 Payment slip.exe 82 - 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 Payment slip.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString Payment slip.exe - Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 4540 schtasks.exe - Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 4740 Payment slip.exe 4740 Payment slip.exe 4740 Payment slip.exe 4740 Payment slip.exe 4600 Payment slip.exe 4600 Payment slip.exe - Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4740 Payment slip.exe - Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 4740 wrote to memory of 4540 4740 Payment slip.exe 79 PID 4740 wrote to memory of 4540 4740 Payment slip.exe 79 PID 4740 wrote to memory of 4540 4740 Payment slip.exe 79 PID 4740 wrote to memory of 4532 4740 Payment slip.exe 81 PID 4740 wrote to memory of 4532 4740 Payment slip.exe 81 PID 4740 wrote to memory of 4532 4740 Payment slip.exe 81 PID 4740 wrote to memory of 4600 4740 Payment slip.exe 82 PID 4740 wrote to memory of 4600 4740 Payment slip.exe 82 PID 4740 wrote to memory of 4600 4740 Payment slip.exe 82 PID 4740 wrote to memory of 4600 4740 Payment slip.exe 82 PID 4740 wrote to memory of 4600 4740 Payment slip.exe 82 PID 4740 wrote to memory of 4600 4740 Payment slip.exe 82 PID 4740 wrote to memory of 4600 4740 Payment slip.exe 82 PID 4740 wrote to memory of 4600 4740 Payment slip.exe 82 PID 4740 wrote to memory of 4600 4740 Payment slip.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\Payment slip.exe"C:\Users\Admin\AppData\Local\Temp\Payment slip.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4740 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\LBtYZgyeQcJoI" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6BA0.tmp"2⤵
- Creates scheduled task(s)
PID:4540
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C:\Users\Admin\AppData\Local\Temp\Payment slip.exe"C:\Users\Admin\AppData\Local\Temp\Payment slip.exe"2⤵PID:4532
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C:\Users\Admin\AppData\Local\Temp\Payment slip.exe"C:\Users\Admin\AppData\Local\Temp\Payment slip.exe"2⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:4600
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