Analysis
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max time kernel
131s -
max time network
142s -
platform
windows10-1703_x64 -
resource
win10-20231129-en -
resource tags
arch:x64arch:x86image:win10-20231129-enlocale:en-usos:windows10-1703-x64system -
submitted
13/12/2023, 21:35
Behavioral task
behavioral1
Sample
351229567c94b3fc3e27daf916dea311b74b14133d906e7652180ad07c2858cd.exe
Resource
win10-20231129-en
General
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Target
351229567c94b3fc3e27daf916dea311b74b14133d906e7652180ad07c2858cd.exe
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Size
1.6MB
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MD5
bfac31b87f82e4505f1f1966bafa4e23
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SHA1
fc85c8c2801ff6d5d2373ff2b2080c87ef6f6c68
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SHA256
351229567c94b3fc3e27daf916dea311b74b14133d906e7652180ad07c2858cd
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SHA512
f7693e898c97a88125ca3295d8eee22ab5319827eff3322e4f6ecc82b9fbfd26e5c24112077d067391034fbce181006f11f635d0bb079d43402013388bdf5f05
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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 351229567c94b3fc3e27daf916dea311b74b14133d906e7652180ad07c2858cd.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-1-5-21-3802588206-2855991289-4225012448-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 351229567c94b3fc3e27daf916dea311b74b14133d906e7652180ad07c2858cd.exe Key opened \REGISTRY\USER\S-1-5-21-3802588206-2855991289-4225012448-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 351229567c94b3fc3e27daf916dea311b74b14133d906e7652180ad07c2858cd.exe Key opened \REGISTRY\USER\S-1-5-21-3802588206-2855991289-4225012448-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 351229567c94b3fc3e27daf916dea311b74b14133d906e7652180ad07c2858cd.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3802588206-2855991289-4225012448-1000\Software\Microsoft\Windows\CurrentVersion\Run\MaxLoonaFest131 = "C:\\Users\\Admin\\AppData\\Local\\MaxLoonaFest131\\MaxLoonaFest131.exe" 351229567c94b3fc3e27daf916dea311b74b14133d906e7652180ad07c2858cd.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 351229567c94b3fc3e27daf916dea311b74b14133d906e7652180ad07c2858cd.exe File opened for modification C:\Windows\SysWOW64\GroupPolicy\gpt.ini 351229567c94b3fc3e27daf916dea311b74b14133d906e7652180ad07c2858cd.exe File created C:\Windows\System32\GroupPolicy\Machine\Registry.pol 351229567c94b3fc3e27daf916dea311b74b14133d906e7652180ad07c2858cd.exe File opened for modification C:\Windows\System32\GroupPolicy\GPT.INI 351229567c94b3fc3e27daf916dea311b74b14133d906e7652180ad07c2858cd.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 4912 1416 WerFault.exe 73 -
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 351229567c94b3fc3e27daf916dea311b74b14133d906e7652180ad07c2858cd.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 351229567c94b3fc3e27daf916dea311b74b14133d906e7652180ad07c2858cd.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 2856 schtasks.exe 1056 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 1416 351229567c94b3fc3e27daf916dea311b74b14133d906e7652180ad07c2858cd.exe 1416 351229567c94b3fc3e27daf916dea311b74b14133d906e7652180ad07c2858cd.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 1416 wrote to memory of 2856 1416 351229567c94b3fc3e27daf916dea311b74b14133d906e7652180ad07c2858cd.exe 74 PID 1416 wrote to memory of 2856 1416 351229567c94b3fc3e27daf916dea311b74b14133d906e7652180ad07c2858cd.exe 74 PID 1416 wrote to memory of 2856 1416 351229567c94b3fc3e27daf916dea311b74b14133d906e7652180ad07c2858cd.exe 74 PID 1416 wrote to memory of 1056 1416 351229567c94b3fc3e27daf916dea311b74b14133d906e7652180ad07c2858cd.exe 78 PID 1416 wrote to memory of 1056 1416 351229567c94b3fc3e27daf916dea311b74b14133d906e7652180ad07c2858cd.exe 78 PID 1416 wrote to memory of 1056 1416 351229567c94b3fc3e27daf916dea311b74b14133d906e7652180ad07c2858cd.exe 78 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3802588206-2855991289-4225012448-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 351229567c94b3fc3e27daf916dea311b74b14133d906e7652180ad07c2858cd.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3802588206-2855991289-4225012448-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 351229567c94b3fc3e27daf916dea311b74b14133d906e7652180ad07c2858cd.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\351229567c94b3fc3e27daf916dea311b74b14133d906e7652180ad07c2858cd.exe"C:\Users\Admin\AppData\Local\Temp\351229567c94b3fc3e27daf916dea311b74b14133d906e7652180ad07c2858cd.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:1416 -
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:2856
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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:1056
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1416 -s 15682⤵
- Program crash
PID:4912
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum1⤵PID:2400
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\??\c:\windows\system32\svchost.exec:\windows\system32\svchost.exe -k localsystemnetworkrestricted -s fhsvc1⤵PID:2368
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1.6MB
MD5bfac31b87f82e4505f1f1966bafa4e23
SHA1fc85c8c2801ff6d5d2373ff2b2080c87ef6f6c68
SHA256351229567c94b3fc3e27daf916dea311b74b14133d906e7652180ad07c2858cd
SHA512f7693e898c97a88125ca3295d8eee22ab5319827eff3322e4f6ecc82b9fbfd26e5c24112077d067391034fbce181006f11f635d0bb079d43402013388bdf5f05
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Filesize
3KB
MD54508521c5ad7146fcc561c4cb3822b1d
SHA198375746192e149524fd78d03f48a901122e2bf9
SHA256afdb8c0161150c9c570ae1265ecaaf853217d31647cf337a88e5ccf85d48ce9b
SHA512799bfd561a228a847d8ffb3eb4b9451f7dd87f1e68e4f27988c477d065d3b482dd7ac6838a8fc5ebc20e7deda91e1d3f288dec09b55c10babcc357184a28ea8a
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Filesize
92KB
MD5982861d9583057c9107636f512d24c82
SHA1b8f0f8e9d07dc653f587912d1aba91bfd8cd9bab
SHA25649bcb23ce630b736c6ff8a08cc8929ac5c1168fd367c9ddfa79c1939efed95d5
SHA51231f616df72551dc1b5732692efd746ec336fb0dfe38dd3a7a2f08c46abb8b6757d9542889f63f63698317a50fc0de65aa0d29cc9ac0115c59486ed7a163c3539