Analysis
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max time kernel
131s -
max time network
141s -
platform
windows10-1703_x64 -
resource
win10-20231129-en -
resource tags
arch:x64arch:x86image:win10-20231129-enlocale:en-usos:windows10-1703-x64system -
submitted
14/12/2023, 00:11
Behavioral task
behavioral1
Sample
4f3daed8e252b93a9f482245aaadabf9105891fa55e001a9423f9efb0b52927e.exe
Resource
win10-20231129-en
General
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Target
4f3daed8e252b93a9f482245aaadabf9105891fa55e001a9423f9efb0b52927e.exe
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Size
1.6MB
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MD5
e94dce896b9504ef6a54fb33528bb923
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SHA1
f99b8a14c147c1dd5f5ab763132b3f8926d2cb64
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SHA256
4f3daed8e252b93a9f482245aaadabf9105891fa55e001a9423f9efb0b52927e
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SHA512
8926a9539b0d4b4b38c5c19e0eb2595cf15c5a954859a601dce936f50c768c736fb50d90fe9fbc741bd3b0601cce72c2a72aec160d6338b345b5e280e4b1e282
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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 4f3daed8e252b93a9f482245aaadabf9105891fa55e001a9423f9efb0b52927e.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-1-5-21-3426238547-133202173-2522127025-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 4f3daed8e252b93a9f482245aaadabf9105891fa55e001a9423f9efb0b52927e.exe Key opened \REGISTRY\USER\S-1-5-21-3426238547-133202173-2522127025-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 4f3daed8e252b93a9f482245aaadabf9105891fa55e001a9423f9efb0b52927e.exe Key opened \REGISTRY\USER\S-1-5-21-3426238547-133202173-2522127025-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 4f3daed8e252b93a9f482245aaadabf9105891fa55e001a9423f9efb0b52927e.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3426238547-133202173-2522127025-1000\Software\Microsoft\Windows\CurrentVersion\Run\MaxLoonaFest131 = "C:\\Users\\Admin\\AppData\\Local\\MaxLoonaFest131\\MaxLoonaFest131.exe" 4f3daed8e252b93a9f482245aaadabf9105891fa55e001a9423f9efb0b52927e.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 3 ipinfo.io 4 ipinfo.io -
Drops file in System32 directory 4 IoCs
description ioc Process File opened for modification C:\Windows\System32\GroupPolicy 4f3daed8e252b93a9f482245aaadabf9105891fa55e001a9423f9efb0b52927e.exe File opened for modification C:\Windows\SysWOW64\GroupPolicy\gpt.ini 4f3daed8e252b93a9f482245aaadabf9105891fa55e001a9423f9efb0b52927e.exe File created C:\Windows\System32\GroupPolicy\Machine\Registry.pol 4f3daed8e252b93a9f482245aaadabf9105891fa55e001a9423f9efb0b52927e.exe File opened for modification C:\Windows\System32\GroupPolicy\GPT.INI 4f3daed8e252b93a9f482245aaadabf9105891fa55e001a9423f9efb0b52927e.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 1284 4248 WerFault.exe 72 -
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 4f3daed8e252b93a9f482245aaadabf9105891fa55e001a9423f9efb0b52927e.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 4f3daed8e252b93a9f482245aaadabf9105891fa55e001a9423f9efb0b52927e.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 3064 schtasks.exe 2696 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 4248 4f3daed8e252b93a9f482245aaadabf9105891fa55e001a9423f9efb0b52927e.exe 4248 4f3daed8e252b93a9f482245aaadabf9105891fa55e001a9423f9efb0b52927e.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 4248 wrote to memory of 3064 4248 4f3daed8e252b93a9f482245aaadabf9105891fa55e001a9423f9efb0b52927e.exe 73 PID 4248 wrote to memory of 3064 4248 4f3daed8e252b93a9f482245aaadabf9105891fa55e001a9423f9efb0b52927e.exe 73 PID 4248 wrote to memory of 3064 4248 4f3daed8e252b93a9f482245aaadabf9105891fa55e001a9423f9efb0b52927e.exe 73 PID 4248 wrote to memory of 2696 4248 4f3daed8e252b93a9f482245aaadabf9105891fa55e001a9423f9efb0b52927e.exe 76 PID 4248 wrote to memory of 2696 4248 4f3daed8e252b93a9f482245aaadabf9105891fa55e001a9423f9efb0b52927e.exe 76 PID 4248 wrote to memory of 2696 4248 4f3daed8e252b93a9f482245aaadabf9105891fa55e001a9423f9efb0b52927e.exe 76 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3426238547-133202173-2522127025-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 4f3daed8e252b93a9f482245aaadabf9105891fa55e001a9423f9efb0b52927e.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3426238547-133202173-2522127025-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 4f3daed8e252b93a9f482245aaadabf9105891fa55e001a9423f9efb0b52927e.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\4f3daed8e252b93a9f482245aaadabf9105891fa55e001a9423f9efb0b52927e.exe"C:\Users\Admin\AppData\Local\Temp\4f3daed8e252b93a9f482245aaadabf9105891fa55e001a9423f9efb0b52927e.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:4248 -
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:3064
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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:2696
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4248 -s 16082⤵
- Program crash
PID:1284
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum1⤵PID:1540
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\??\c:\windows\system32\svchost.exec:\windows\system32\svchost.exe -k localsystemnetworkrestricted -s fhsvc1⤵PID:4788
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1.6MB
MD5e94dce896b9504ef6a54fb33528bb923
SHA1f99b8a14c147c1dd5f5ab763132b3f8926d2cb64
SHA2564f3daed8e252b93a9f482245aaadabf9105891fa55e001a9423f9efb0b52927e
SHA5128926a9539b0d4b4b38c5c19e0eb2595cf15c5a954859a601dce936f50c768c736fb50d90fe9fbc741bd3b0601cce72c2a72aec160d6338b345b5e280e4b1e282
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Filesize
3KB
MD54da4599220a2a301a9a8bdbabe0d7887
SHA1a5334cef53909f703cc6ea9d0f8a6956f395d82e
SHA256be07cc1d199c2d04cf74cf798b720126a61cec8c4f54de27d8b547deb5e3b910
SHA512a52154ea1fc460d3a816ac288bc661015e750770068a9d7cc3a049c93802987148bf103ce1f7da940581161173e47f62467806a323cbb4ae1786d4ced86378f3
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Filesize
92KB
MD58e8e7137325b5aa4e1206f338a7ccde7
SHA123a2d46d2812f664d8fff942d493e85afe5f6a27
SHA256bbbd94e3e65b0cf446d3f651f1a557e479c2adc8c0c955a18addd89fcd7ffe25
SHA5121512bc6ad27b5b794d44b2599ace04a325b32726a1c96e2f8a6f75d55c494e65a4cdd1ea241027d693cd54dc049ad4a23b2147bb1a49450b7949cc71dba06233