Analysis
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max time kernel
147s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20231127-en -
resource tags
arch:x64arch:x86image:win10v2004-20231127-enlocale:en-usos:windows10-2004-x64system -
submitted
13/12/2023, 21:39
Behavioral task
behavioral1
Sample
8fdd2785d3522e5a7d6d6c7d4240dd5034e8d18d4eda05c71b6fbd69f345f1af.exe
Resource
win10v2004-20231127-en
General
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Target
8fdd2785d3522e5a7d6d6c7d4240dd5034e8d18d4eda05c71b6fbd69f345f1af.exe
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Size
1.6MB
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MD5
cbb0b9dd19e5913079cd699250b66b00
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SHA1
e98599cad9443bf9f1b93ff976799568d440ada3
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SHA256
8fdd2785d3522e5a7d6d6c7d4240dd5034e8d18d4eda05c71b6fbd69f345f1af
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SHA512
8d75a56ee2397c1485d066057fd975c48a6807b91b85db411f5dc013e4f106df63e93cdf033da98e59bd089750b0aab926dbd41cd0bbdcbcdf9d6411620b450e
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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 8fdd2785d3522e5a7d6d6c7d4240dd5034e8d18d4eda05c71b6fbd69f345f1af.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-1-5-21-3028534956-1709433221-1313273668-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 8fdd2785d3522e5a7d6d6c7d4240dd5034e8d18d4eda05c71b6fbd69f345f1af.exe Key opened \REGISTRY\USER\S-1-5-21-3028534956-1709433221-1313273668-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 8fdd2785d3522e5a7d6d6c7d4240dd5034e8d18d4eda05c71b6fbd69f345f1af.exe Key opened \REGISTRY\USER\S-1-5-21-3028534956-1709433221-1313273668-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 8fdd2785d3522e5a7d6d6c7d4240dd5034e8d18d4eda05c71b6fbd69f345f1af.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3028534956-1709433221-1313273668-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MaxLoonaFest131 = "C:\\Users\\Admin\\AppData\\Local\\MaxLoonaFest131\\MaxLoonaFest131.exe" 8fdd2785d3522e5a7d6d6c7d4240dd5034e8d18d4eda05c71b6fbd69f345f1af.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 22 ipinfo.io 23 ipinfo.io -
Drops file in System32 directory 4 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\GroupPolicy\gpt.ini 8fdd2785d3522e5a7d6d6c7d4240dd5034e8d18d4eda05c71b6fbd69f345f1af.exe File created C:\Windows\System32\GroupPolicy\Machine\Registry.pol 8fdd2785d3522e5a7d6d6c7d4240dd5034e8d18d4eda05c71b6fbd69f345f1af.exe File opened for modification C:\Windows\System32\GroupPolicy\GPT.INI 8fdd2785d3522e5a7d6d6c7d4240dd5034e8d18d4eda05c71b6fbd69f345f1af.exe File opened for modification C:\Windows\System32\GroupPolicy 8fdd2785d3522e5a7d6d6c7d4240dd5034e8d18d4eda05c71b6fbd69f345f1af.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 4500 3536 WerFault.exe 85 -
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 8fdd2785d3522e5a7d6d6c7d4240dd5034e8d18d4eda05c71b6fbd69f345f1af.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 8fdd2785d3522e5a7d6d6c7d4240dd5034e8d18d4eda05c71b6fbd69f345f1af.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 4056 schtasks.exe 5000 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 3536 8fdd2785d3522e5a7d6d6c7d4240dd5034e8d18d4eda05c71b6fbd69f345f1af.exe 3536 8fdd2785d3522e5a7d6d6c7d4240dd5034e8d18d4eda05c71b6fbd69f345f1af.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 3536 wrote to memory of 4056 3536 8fdd2785d3522e5a7d6d6c7d4240dd5034e8d18d4eda05c71b6fbd69f345f1af.exe 88 PID 3536 wrote to memory of 4056 3536 8fdd2785d3522e5a7d6d6c7d4240dd5034e8d18d4eda05c71b6fbd69f345f1af.exe 88 PID 3536 wrote to memory of 4056 3536 8fdd2785d3522e5a7d6d6c7d4240dd5034e8d18d4eda05c71b6fbd69f345f1af.exe 88 PID 3536 wrote to memory of 5000 3536 8fdd2785d3522e5a7d6d6c7d4240dd5034e8d18d4eda05c71b6fbd69f345f1af.exe 92 PID 3536 wrote to memory of 5000 3536 8fdd2785d3522e5a7d6d6c7d4240dd5034e8d18d4eda05c71b6fbd69f345f1af.exe 92 PID 3536 wrote to memory of 5000 3536 8fdd2785d3522e5a7d6d6c7d4240dd5034e8d18d4eda05c71b6fbd69f345f1af.exe 92 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3028534956-1709433221-1313273668-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 8fdd2785d3522e5a7d6d6c7d4240dd5034e8d18d4eda05c71b6fbd69f345f1af.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3028534956-1709433221-1313273668-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 8fdd2785d3522e5a7d6d6c7d4240dd5034e8d18d4eda05c71b6fbd69f345f1af.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\8fdd2785d3522e5a7d6d6c7d4240dd5034e8d18d4eda05c71b6fbd69f345f1af.exe"C:\Users\Admin\AppData\Local\Temp\8fdd2785d3522e5a7d6d6c7d4240dd5034e8d18d4eda05c71b6fbd69f345f1af.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:3536 -
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:4056
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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:5000
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3536 -s 16682⤵
- Program crash
PID:4500
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc1⤵PID:5116
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum1⤵PID:3724
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3536 -ip 35361⤵PID:2080
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1.6MB
MD5cbb0b9dd19e5913079cd699250b66b00
SHA1e98599cad9443bf9f1b93ff976799568d440ada3
SHA2568fdd2785d3522e5a7d6d6c7d4240dd5034e8d18d4eda05c71b6fbd69f345f1af
SHA5128d75a56ee2397c1485d066057fd975c48a6807b91b85db411f5dc013e4f106df63e93cdf033da98e59bd089750b0aab926dbd41cd0bbdcbcdf9d6411620b450e
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Filesize
3KB
MD50f89daaa51d50acf103338caba631eee
SHA1ebca1f3038c64d32138515678103c93abc0595af
SHA25697faed85525489b4ab4951a70b828e83a7bb6b346efa83af513434ba53c3dbca
SHA5123ec19f78ecca0948d8769c06cf76bd00a3cfbc76739723bf590e6026b2063661753cebe7ca90e9437ca66acf86c31943391404706d498893a701b6ae0e0c4d1c
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Filesize
92KB
MD544de9f4a837691e623c12425421c22d1
SHA15229b2b16468353e9ae72ae2d97840448b055e55
SHA256683050f55ee81e6cdd868cad8df884f327f903bca54f06f19e24d196d514fcae
SHA5125f15e672310ef2f67e7517e4b23d3d1500fe18c4e53785ed8191d0b74139ccb2142e5b7495ec966e207fd46ead84bbd929d2d169b71d9477fbac4b383b0b55c5
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Filesize
116KB
MD5f70aa3fa04f0536280f872ad17973c3d
SHA150a7b889329a92de1b272d0ecf5fce87395d3123
SHA2568d782aa65de6db3538a14da82216e96d5e0a3c60496726e3541a8165bccc65f8
SHA51230675c5c610d9aa32a4c4a4d9c3af7570823cd197f8d2a709222c78e2cd15304bbed80e233e3674ec2f6e33d1961c67fd6a46dc8ba8b1a301cd0722932c03c84