Analysis
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max time kernel
148s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20250217-en -
resource tags
arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system -
submitted
27/02/2025, 13:23
Static task
static1
Behavioral task
behavioral1
Sample
BugSplat64.dll
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
BugSplat64.dll
Resource
win10v2004-20250217-en
General
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Target
BugSplat64.dll
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Size
12.4MB
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MD5
5dc0ed87146dacc6f84005f6667a977a
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SHA1
397fd547749314eca0780275e8c695067256d82d
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SHA256
5b0c0b5fab4030da17e80d45dddaacda910e443d3a270882196968b9309bfaaf
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SHA512
f3df02654ebee17d9b7c1346d6a4a69d8a5fb025731e27ac7cab4929e4ec87818d6ed446ad95a959000013730d65523ff24036af23847ab0646883883b7df786
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SSDEEP
98304:ppnzRymHDY4HFSnarEN1w7Kx7GdvrqexhNZZ0MG1qB1H7F2hjGXCcdWSxwxQ2jh:pNFD84H+NqelOBBZZsItR2hjGXPdcxF
Malware Config
Extracted
vipkeylogger
Protocol: smtp- Host:
mail.wxtp.store - Port:
587 - Username:
[email protected] - Password:
7213575aceACE@@ - Email To:
[email protected]
Signatures
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VIPKeylogger
VIPKeylogger is a keylogger and infostealer written in C# and it resembles SnakeKeylogger that was found in 2020.
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Vipkeylogger family
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Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2593460650-190333679-3676257533-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 installutil.exe Key opened \REGISTRY\USER\S-1-5-21-2593460650-190333679-3676257533-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 installutil.exe Key opened \REGISTRY\USER\S-1-5-21-2593460650-190333679-3676257533-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 installutil.exe -
Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 52 checkip.dyndns.org 54 reallyfreegeoip.org 55 reallyfreegeoip.org -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 412 set thread context of 792 412 rundll32.exe 100 -
System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language installutil.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 792 installutil.exe 792 installutil.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 792 installutil.exe -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 412 wrote to memory of 4940 412 rundll32.exe 99 PID 412 wrote to memory of 4940 412 rundll32.exe 99 PID 412 wrote to memory of 4940 412 rundll32.exe 99 PID 412 wrote to memory of 792 412 rundll32.exe 100 PID 412 wrote to memory of 792 412 rundll32.exe 100 PID 412 wrote to memory of 792 412 rundll32.exe 100 PID 412 wrote to memory of 792 412 rundll32.exe 100 PID 412 wrote to memory of 792 412 rundll32.exe 100 PID 412 wrote to memory of 792 412 rundll32.exe 100 PID 412 wrote to memory of 792 412 rundll32.exe 100 PID 412 wrote to memory of 792 412 rundll32.exe 100 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2593460650-190333679-3676257533-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 installutil.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2593460650-190333679-3676257533-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 installutil.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\BugSplat64.dll,#11⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:412 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"2⤵PID:4940
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe"2⤵
- Accesses Microsoft Outlook profiles
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:792
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