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Analysis
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max time kernel
144s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20230221-en -
resource tags
arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system -
submitted
04/04/2023, 09:15
Static task
static1
Behavioral task
behavioral1
Sample
Quotation_pdf.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
Quotation_pdf.exe
Resource
win10v2004-20230221-en
General
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Target
Quotation_pdf.exe
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Size
910KB
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MD5
6be7360d15864b39760f38be37d21b32
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SHA1
9a85a30228996405f11807cbbf8d9cd7e47d45cc
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SHA256
0f71aedb95163de525fa395b1a444f48222bc28b70521bff45467cbf98b63b9a
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SHA512
b98ad8f32c4632c403466e27161518c991b6c9395da27a743bc3af6ca2a7c632b595ce44fd7d09c6603212cdab9dcb220db76f80399719f7097451a8190f2a0e
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SSDEEP
24576:S0PXkGzgCC4mEIXxiZiX6vjgxxUtqY6VUOP:DPng74mJxmiX6vjgEb2
Malware Config
Extracted
blustealer
https://api.telegram.org/bot5450700540:AAEJyEEV8BKgYUKmnCPZxp19kD9GVSRup5M/sendMessage?chat_id=5422342474
Signatures
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BluStealer
A Modular information stealer written in Visual Basic.
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Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 AppLaunch.exe Key opened \REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 AppLaunch.exe Key opened \REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 AppLaunch.exe -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 2072 set thread context of 4680 2072 Quotation_pdf.exe 88 PID 4680 set thread context of 4704 4680 Quotation_pdf.exe 89 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Script User-Agent 1 IoCs
Uses user-agent string associated with script host/environment.
description flow ioc HTTP User-Agent header 27 Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5) -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 4680 Quotation_pdf.exe -
Suspicious use of WriteProcessMemory 13 IoCs
description pid Process procid_target PID 2072 wrote to memory of 4680 2072 Quotation_pdf.exe 88 PID 2072 wrote to memory of 4680 2072 Quotation_pdf.exe 88 PID 2072 wrote to memory of 4680 2072 Quotation_pdf.exe 88 PID 2072 wrote to memory of 4680 2072 Quotation_pdf.exe 88 PID 2072 wrote to memory of 4680 2072 Quotation_pdf.exe 88 PID 2072 wrote to memory of 4680 2072 Quotation_pdf.exe 88 PID 2072 wrote to memory of 4680 2072 Quotation_pdf.exe 88 PID 2072 wrote to memory of 4680 2072 Quotation_pdf.exe 88 PID 4680 wrote to memory of 4704 4680 Quotation_pdf.exe 89 PID 4680 wrote to memory of 4704 4680 Quotation_pdf.exe 89 PID 4680 wrote to memory of 4704 4680 Quotation_pdf.exe 89 PID 4680 wrote to memory of 4704 4680 Quotation_pdf.exe 89 PID 4680 wrote to memory of 4704 4680 Quotation_pdf.exe 89 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 AppLaunch.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 AppLaunch.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Quotation_pdf.exe"C:\Users\Admin\AppData\Local\Temp\Quotation_pdf.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2072 -
C:\Users\Admin\AppData\Local\Temp\Quotation_pdf.exe"C:\Users\Admin\AppData\Local\Temp\Quotation_pdf.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4680 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe3⤵
- Accesses Microsoft Outlook profiles
- outlook_office_path
- outlook_win_path
PID:4704
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