Analysis
- max time kernel
121s - max time network
123s - platform
windows10_x64 - resource
win10v20210410 - submitted
31/05/2021, 12:01
Static task
static1
Behavioral task
behavioral1
Sample
HalkbankEkstre310521657876007850.exe
Resource
win7v20210408
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
HalkbankEkstre310521657876007850.exe
Resource
win10v20210410
0 signatures
0 seconds
General
- Target HalkbankEkstre310521657876007850.exe
- Size 160KB
- Sample210531-sy49cs596x
- SHA256 6707f8585bc86cee81fa957414be0bcfc707b1786d372b057de4cc0f30d2af08
- MD5 8ba8a8618deb4d33788a752797912dc2
- SHA1 2dded58f57f22fdfd389fd8b4df1b95267f7a096
- SHA512 18b139e6b45cf015b56f947bca0efe29f20ec4bcf629a087ffa27a9019befc44a00bffb6f89bbb960a0747a576bc51cebad78d59cf5899f8e21a35bbf810f79e
- MD5 SHA1 SHA512
Score
10/10
Malware Config
Extracted
Family
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azorult
C2
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http://ppdb.smkn1cilegon.sch.id/huPl/index.php
Signatures
- Azorult
An information stealer that was first discovered in 2016, targeting browsing history and passwords.
- Loads dropped DLL 8 IoCs
pid Process 3616 HalkbankEkstre310521657876007850.exe 3616 HalkbankEkstre310521657876007850.exe 2720 HalkbankEkstre310521657876007850.exe 2720 HalkbankEkstre310521657876007850.exe 2760 MSBuild.exe 2760 MSBuild.exe 2760 MSBuild.exe 2760 MSBuild.exe - Reads local data of messenger clients 2 TTPs
Infostealers often target stored data of messaging applications, which can include saved credentials and account information.
- Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
- Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2720 set thread context of 2760 2720 HalkbankEkstre310521657876007850.exe 80 - 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 MSBuild.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString MSBuild.exe - Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2760 MSBuild.exe 2760 MSBuild.exe - Suspicious behavior: MapViewOfSection 3 IoCs
pid Process 3616 HalkbankEkstre310521657876007850.exe 3616 HalkbankEkstre310521657876007850.exe 2720 HalkbankEkstre310521657876007850.exe - Suspicious use of WriteProcessMemory 10 IoCs
description pid Process procid_target PID 3616 wrote to memory of 2076 3616 HalkbankEkstre310521657876007850.exe 76 PID 3616 wrote to memory of 2076 3616 HalkbankEkstre310521657876007850.exe 76 PID 3616 wrote to memory of 2076 3616 HalkbankEkstre310521657876007850.exe 76 PID 3616 wrote to memory of 2720 3616 HalkbankEkstre310521657876007850.exe 79 PID 3616 wrote to memory of 2720 3616 HalkbankEkstre310521657876007850.exe 79 PID 3616 wrote to memory of 2720 3616 HalkbankEkstre310521657876007850.exe 79 PID 2720 wrote to memory of 2760 2720 HalkbankEkstre310521657876007850.exe 80 PID 2720 wrote to memory of 2760 2720 HalkbankEkstre310521657876007850.exe 80 PID 2720 wrote to memory of 2760 2720 HalkbankEkstre310521657876007850.exe 80 PID 2720 wrote to memory of 2760 2720 HalkbankEkstre310521657876007850.exe 80
Processes
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C:\Users\Admin\AppData\Local\Temp\HalkbankEkstre310521657876007850.exe"C:\Users\Admin\AppData\Local\Temp\HalkbankEkstre310521657876007850.exe"1⤵
- Loads dropped DLL
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3616 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"C:\Users\Admin\AppData\Local\Temp\HalkbankEkstre310521657876007850.exe"2⤵PID:2076
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C:\Users\Admin\AppData\Local\Temp\HalkbankEkstre310521657876007850.exe"C:\Users\Admin\AppData\Local\Temp\HalkbankEkstre310521657876007850.exe"2⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2720 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"C:\Users\Admin\AppData\Local\Temp\HalkbankEkstre310521657876007850.exe"3⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:2760
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