Analysis
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max time kernel
120s -
max time network
124s -
platform
windows10-2004_x64 -
resource
win10v2004-20231130-en -
resource tags
arch:x64arch:x86image:win10v2004-20231130-enlocale:en-usos:windows10-2004-x64system -
submitted
13/12/2023, 22:13
Behavioral task
behavioral1
Sample
16b1740d2d77fc92f8a2084372f373f465279c08fc90146981302a140db2b8df.exe
Resource
win10v2004-20231130-en
General
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Target
16b1740d2d77fc92f8a2084372f373f465279c08fc90146981302a140db2b8df.exe
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Size
1.6MB
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MD5
9a1ae9149c28fbdda8c9500fecf85240
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SHA1
515549ad978a0ae5690cab33aec8022992cd5cc3
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SHA256
16b1740d2d77fc92f8a2084372f373f465279c08fc90146981302a140db2b8df
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SHA512
4c09e40641b0cf8966cba5b21e740fa94529962a5f0a8b7be1e050fc569e5e39058242f17894bc07f57ee7f6c7437475ed046c1908ca6732a8f60b819bc1d88a
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SSDEEP
49152:80ceOGgUYYEmluRKYoFh4kGWusbQnIyDi1E1uonTKi/OjCCNG:1XOGgUYC4RKXFhrusbaDkE1u
Malware Config
Signatures
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Drops startup file 1 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\FANBooster131.lnk 16b1740d2d77fc92f8a2084372f373f465279c08fc90146981302a140db2b8df.exe -
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 2 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-1-5-21-433534792-1200107535-3148087551-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 16b1740d2d77fc92f8a2084372f373f465279c08fc90146981302a140db2b8df.exe Key opened \REGISTRY\USER\S-1-5-21-433534792-1200107535-3148087551-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 16b1740d2d77fc92f8a2084372f373f465279c08fc90146981302a140db2b8df.exe Key opened \REGISTRY\USER\S-1-5-21-433534792-1200107535-3148087551-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 16b1740d2d77fc92f8a2084372f373f465279c08fc90146981302a140db2b8df.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-433534792-1200107535-3148087551-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MaxLoonaFest131 = "C:\\Users\\Admin\\AppData\\Local\\MaxLoonaFest131\\MaxLoonaFest131.exe" 16b1740d2d77fc92f8a2084372f373f465279c08fc90146981302a140db2b8df.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 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 24 ipinfo.io 25 ipinfo.io -
Drops file in System32 directory 4 IoCs
description ioc Process File opened for modification C:\Windows\System32\GroupPolicy 16b1740d2d77fc92f8a2084372f373f465279c08fc90146981302a140db2b8df.exe File opened for modification C:\Windows\SysWOW64\GroupPolicy\gpt.ini 16b1740d2d77fc92f8a2084372f373f465279c08fc90146981302a140db2b8df.exe File created C:\Windows\System32\GroupPolicy\Machine\Registry.pol 16b1740d2d77fc92f8a2084372f373f465279c08fc90146981302a140db2b8df.exe File opened for modification C:\Windows\System32\GroupPolicy\GPT.INI 16b1740d2d77fc92f8a2084372f373f465279c08fc90146981302a140db2b8df.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Program crash 1 IoCs
pid pid_target Process procid_target 3280 2784 WerFault.exe 88 -
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 16b1740d2d77fc92f8a2084372f373f465279c08fc90146981302a140db2b8df.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 16b1740d2d77fc92f8a2084372f373f465279c08fc90146981302a140db2b8df.exe -
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 4120 schtasks.exe 2012 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2784 16b1740d2d77fc92f8a2084372f373f465279c08fc90146981302a140db2b8df.exe 2784 16b1740d2d77fc92f8a2084372f373f465279c08fc90146981302a140db2b8df.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 2784 wrote to memory of 4120 2784 16b1740d2d77fc92f8a2084372f373f465279c08fc90146981302a140db2b8df.exe 89 PID 2784 wrote to memory of 4120 2784 16b1740d2d77fc92f8a2084372f373f465279c08fc90146981302a140db2b8df.exe 89 PID 2784 wrote to memory of 4120 2784 16b1740d2d77fc92f8a2084372f373f465279c08fc90146981302a140db2b8df.exe 89 PID 2784 wrote to memory of 2012 2784 16b1740d2d77fc92f8a2084372f373f465279c08fc90146981302a140db2b8df.exe 94 PID 2784 wrote to memory of 2012 2784 16b1740d2d77fc92f8a2084372f373f465279c08fc90146981302a140db2b8df.exe 94 PID 2784 wrote to memory of 2012 2784 16b1740d2d77fc92f8a2084372f373f465279c08fc90146981302a140db2b8df.exe 94 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-433534792-1200107535-3148087551-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 16b1740d2d77fc92f8a2084372f373f465279c08fc90146981302a140db2b8df.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-433534792-1200107535-3148087551-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 16b1740d2d77fc92f8a2084372f373f465279c08fc90146981302a140db2b8df.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\16b1740d2d77fc92f8a2084372f373f465279c08fc90146981302a140db2b8df.exe"C:\Users\Admin\AppData\Local\Temp\16b1740d2d77fc92f8a2084372f373f465279c08fc90146981302a140db2b8df.exe"1⤵
- Drops startup file
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Drops file in System32 directory
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:2784 -
C:\Windows\SysWOW64\schtasks.exeschtasks /create /f /RU "Admin" /tr "C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe" /tn "OfficeTrackerNMP131 HR" /sc HOURLY /rl HIGHEST2⤵
- Creates scheduled task(s)
PID:4120
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /f /RU "Admin" /tr "C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe" /tn "OfficeTrackerNMP131 LG" /sc ONLOGON /rl HIGHEST2⤵
- Creates scheduled task(s)
PID:2012
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2784 -s 17682⤵
- Program crash
PID:3280
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum1⤵PID:3408
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc1⤵PID:3952
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 2784 -ip 27841⤵PID:4248
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1.6MB
MD59a1ae9149c28fbdda8c9500fecf85240
SHA1515549ad978a0ae5690cab33aec8022992cd5cc3
SHA25616b1740d2d77fc92f8a2084372f373f465279c08fc90146981302a140db2b8df
SHA5124c09e40641b0cf8966cba5b21e740fa94529962a5f0a8b7be1e050fc569e5e39058242f17894bc07f57ee7f6c7437475ed046c1908ca6732a8f60b819bc1d88a
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Filesize
3KB
MD5a6eba5f0dcb4231987a9592e6513924a
SHA14f95c3e83f690df0328a9c51ecd72f2b0810ae33
SHA25654f298c122612a0e682ccd233e59394c8b96b7bf53ca94bfdd5733ddd9fefc44
SHA512272839cf469111c4b2d4e31577fa28ccc64ab251b95fdc993440db4f0266afda932489b2e4a09c5d8e9ca6b703ec939eb96fb19327a05230be22f99d3e25ea8c
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Filesize
92KB
MD564e37b091c8b6c589857ba1adfcfd3c6
SHA1fe3b230fea7286918504d9f57b2d6acb9d01e6ca
SHA256563d8b77316228d681f2e490b1e99d267f4d22aa8c6711ba2ed7f66e6bfbd974
SHA51206668ffebf5f0b9662c8f8814075331933b3225a0eaddea010831cbbb4a7f72cb53274308c0cfe2cb0505ef3997f8e4b5424260a37ba6f069456932dc670fc86
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Filesize
116KB
MD5f70aa3fa04f0536280f872ad17973c3d
SHA150a7b889329a92de1b272d0ecf5fce87395d3123
SHA2568d782aa65de6db3538a14da82216e96d5e0a3c60496726e3541a8165bccc65f8
SHA51230675c5c610d9aa32a4c4a4d9c3af7570823cd197f8d2a709222c78e2cd15304bbed80e233e3674ec2f6e33d1961c67fd6a46dc8ba8b1a301cd0722932c03c84