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Analysis
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max time kernel
79s -
max time network
45s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
09/09/2022, 17:01
Behavioral task
behavioral1
Sample
cuspule.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
cuspule.exe
Resource
win10v2004-20220901-en
General
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Target
cuspule.exe
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Size
144KB
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MD5
cb51286b55d81634de24cdf0fa2bd358
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SHA1
af50caf6cc4ba374d63911031491fc846ce443db
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SHA256
16a775ae7240434e0563eeb9220c0fb4d2352251d4483d08d9d9678f2b743f1c
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SHA512
3450d5aa671164de9953f7dbfe17751619ce1bd20dd24f773d858d65e7f521e935c13da286f0a994dae91b64716339834cf8be560aad21c5a97c28a10adab47b
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SSDEEP
1536:fSV/Zws3kTnvzbhNBPmxue2SRQg0dkEwiqoViow8KLNH7auPyzjbuf:feZTkLfhjFSiO3omBNWuaz/m
Malware Config
Signatures
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StormKitty
StormKitty is an open source info stealer written in C#.
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StormKitty payload 4 IoCs
resource yara_rule behavioral1/memory/948-59-0x0000000000090000-0x00000000000AA000-memory.dmp family_stormkitty behavioral1/memory/948-60-0x00000000000A4F6E-mapping.dmp family_stormkitty behavioral1/memory/948-62-0x0000000000090000-0x00000000000AA000-memory.dmp family_stormkitty behavioral1/memory/948-64-0x0000000000090000-0x00000000000AA000-memory.dmp family_stormkitty -
Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 AppLaunch.exe Key opened \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 AppLaunch.exe Key opened \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 AppLaunch.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 3 icanhazip.com -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 864 set thread context of 948 864 cuspule.exe 27 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier AppLaunch.exe Key opened \REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0 AppLaunch.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 864 cuspule.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 948 AppLaunch.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 864 cuspule.exe -
Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 864 wrote to memory of 948 864 cuspule.exe 27 PID 864 wrote to memory of 948 864 cuspule.exe 27 PID 864 wrote to memory of 948 864 cuspule.exe 27 PID 864 wrote to memory of 948 864 cuspule.exe 27 PID 864 wrote to memory of 948 864 cuspule.exe 27 PID 864 wrote to memory of 948 864 cuspule.exe 27 PID 864 wrote to memory of 948 864 cuspule.exe 27 PID 864 wrote to memory of 948 864 cuspule.exe 27 PID 864 wrote to memory of 948 864 cuspule.exe 27 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 AppLaunch.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 AppLaunch.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\cuspule.exe"C:\Users\Admin\AppData\Local\Temp\cuspule.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:864 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe2⤵
- Accesses Microsoft Outlook profiles
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:948
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