Analysis
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max time kernel
150s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
22-01-2025 10:09
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
PO202501A.zip
Resource
win7-20240903-en
windows7-x64
3 signatures
150 seconds
Behavioral task
behavioral2
Sample
PO202501A.zip
Resource
win10v2004-20241007-en
windows10-2004-x64
2 signatures
150 seconds
Behavioral task
behavioral3
Sample
BugSplat64.dll
Resource
win7-20241010-en
windows7-x64
13 signatures
150 seconds
Behavioral task
behavioral4
Sample
BugSplat64.dll
Resource
win10v2004-20241007-en
windows10-2004-x64
16 signatures
150 seconds
Behavioral task
behavioral5
Sample
PO202501A.exe
Resource
win7-20240903-en
windows7-x64
14 signatures
150 seconds
Behavioral task
behavioral6
Sample
PO202501A.exe
Resource
win10v2004-20241007-en
windows10-2004-x64
14 signatures
150 seconds
General
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Target
BugSplat64.dll
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Size
14.2MB
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MD5
946cefc76131918251e84ff417ad4736
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SHA1
e2f711559b08889426eb22d2ff6756e52c2c719d
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SHA256
c543557199efbd13ac131a7a4676660bce4ba9d06109af6464d22c44935c86a1
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SHA512
62cbf241f4d266c3f1952bdcee16e54a0b9dfd4632b7d7cc6befd6d7c94d999349bb26088625bbb08d5d93c9450b5c59dade17b17231c4515d995e8ccbbc17a5
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SSDEEP
196608:yUt2dD+yDfThRq5mt931hN8clGkkizbqup+d:yUt2t+yDHqq7YriKupA
Malware Config
Extracted
Family
vipkeylogger
C2
https://api.telegram.org/bot7328132851:AAGjxJzgHhOy6CKcH2zQWuOPw-Si4v2MtvU/sendMessage?chat_id=7467176655
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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Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 regasm.exe Key opened \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 regasm.exe Key opened \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 regasm.exe -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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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 14 checkip.dyndns.org 16 reallyfreegeoip.org 17 reallyfreegeoip.org -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 4788 set thread context of 4340 4788 rundll32.exe 86 -
Drops file in Windows directory 64 IoCs
description ioc Process File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\cngcredui.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\capauthz.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\cmd.exe rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\DesktopSwitcherDataModel.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\AppVSentinel.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\AnalogCommonProxyStub.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\AppXDeploymentExtensions.onecore.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\bthpanapi.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\DeviceUpdateCenterCsp.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\agentactivationruntimestarter.exe rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\bdeui.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\bitsigd.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\cmpbk32.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\cttune.exe rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\clbcatq.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\ConfigureExpandedStorage.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\AdaptiveCards.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\ApproveChildRequest.exe rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\AppxSip.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\Chakrathunk.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\CleanPCCSP.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\directxdatabaseupdater.exe rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\aadauthhelper.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\AboutSettingsHandlers.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\apisampling.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\AppHostRegistrationVerifier.exe rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\compact.exe rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\DevicePairingFolder.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\DeviceSoftwareInstallationClient.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\devmgr.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\amsi.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\authui.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\backgroundTaskHost.exe rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\BootMenuUX.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\cca.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\C_20127.NLS rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\DevQueryBroker.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\activeds.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\cdd.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\ClipUp.exe rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\C_1140.NLS rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\appsruprov.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\C_1250.NLS rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\appinfo.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\BTAGService.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\CastSrv.exe rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\C_037.NLS rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\cdpsvc.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\ChtCangjieDS.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\C_1256.NLS rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\d3d10_1.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\ComputerToastIcon.contrast-white.png rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\directmanipulation.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\autotimesvc.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\clip.exe rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\cryptdll.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\cscapi.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\authz.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\BingMaps.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\ClipboardServer.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\clrhost.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\AddressParser.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\CourtesyEngine.dll rundll32.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\cryptcatsvc.dll rundll32.exe -
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 regasm.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 4340 regasm.exe 4340 regasm.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 4788 rundll32.exe Token: SeDebugPrivilege 4340 regasm.exe -
Suspicious use of WriteProcessMemory 17 IoCs
description pid Process procid_target PID 4788 wrote to memory of 2728 4788 rundll32.exe 83 PID 4788 wrote to memory of 2728 4788 rundll32.exe 83 PID 4788 wrote to memory of 2728 4788 rundll32.exe 83 PID 4788 wrote to memory of 2688 4788 rundll32.exe 84 PID 4788 wrote to memory of 2688 4788 rundll32.exe 84 PID 4788 wrote to memory of 2688 4788 rundll32.exe 84 PID 4788 wrote to memory of 1224 4788 rundll32.exe 85 PID 4788 wrote to memory of 1224 4788 rundll32.exe 85 PID 4788 wrote to memory of 1224 4788 rundll32.exe 85 PID 4788 wrote to memory of 4340 4788 rundll32.exe 86 PID 4788 wrote to memory of 4340 4788 rundll32.exe 86 PID 4788 wrote to memory of 4340 4788 rundll32.exe 86 PID 4788 wrote to memory of 4340 4788 rundll32.exe 86 PID 4788 wrote to memory of 4340 4788 rundll32.exe 86 PID 4788 wrote to memory of 4340 4788 rundll32.exe 86 PID 4788 wrote to memory of 4340 4788 rundll32.exe 86 PID 4788 wrote to memory of 4340 4788 rundll32.exe 86 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 regasm.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 regasm.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
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4788 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"2⤵PID:2728
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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⤵PID:2688
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe"2⤵PID:1224
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.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:4340
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