Analysis
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max time kernel
147s -
max time network
148s -
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, 23:55
Behavioral task
behavioral1
Sample
35cca66849f128ef5d2a4f25df97f866776e914c7b5783b93b74be63ba0aebe5.exe
Resource
win10-20231129-en
General
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Target
35cca66849f128ef5d2a4f25df97f866776e914c7b5783b93b74be63ba0aebe5.exe
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Size
1.6MB
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MD5
7372e9843646bb76f1e0dafa9577da52
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SHA1
c4b697f4a9bf0f8eaed5960903ba1c8880df93d1
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SHA256
35cca66849f128ef5d2a4f25df97f866776e914c7b5783b93b74be63ba0aebe5
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SHA512
9af3553399d11dec5744bdb9faf0adb96be21f7986e47c12aec83ed9206cf4d7d80e7f04e6548ea0e4d15df9b0a2387e1d8a60a581731f12c066cf826a172657
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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 35cca66849f128ef5d2a4f25df97f866776e914c7b5783b93b74be63ba0aebe5.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-1-5-21-2915688436-2954362642-4271300650-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 35cca66849f128ef5d2a4f25df97f866776e914c7b5783b93b74be63ba0aebe5.exe Key opened \REGISTRY\USER\S-1-5-21-2915688436-2954362642-4271300650-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 35cca66849f128ef5d2a4f25df97f866776e914c7b5783b93b74be63ba0aebe5.exe Key opened \REGISTRY\USER\S-1-5-21-2915688436-2954362642-4271300650-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 35cca66849f128ef5d2a4f25df97f866776e914c7b5783b93b74be63ba0aebe5.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2915688436-2954362642-4271300650-1000\Software\Microsoft\Windows\CurrentVersion\Run\MaxLoonaFest131 = "C:\\Users\\Admin\\AppData\\Local\\MaxLoonaFest131\\MaxLoonaFest131.exe" 35cca66849f128ef5d2a4f25df97f866776e914c7b5783b93b74be63ba0aebe5.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 4 ipinfo.io 3 ipinfo.io -
Drops file in System32 directory 4 IoCs
description ioc Process File opened for modification C:\Windows\System32\GroupPolicy 35cca66849f128ef5d2a4f25df97f866776e914c7b5783b93b74be63ba0aebe5.exe File opened for modification C:\Windows\SysWOW64\GroupPolicy\gpt.ini 35cca66849f128ef5d2a4f25df97f866776e914c7b5783b93b74be63ba0aebe5.exe File created C:\Windows\System32\GroupPolicy\Machine\Registry.pol 35cca66849f128ef5d2a4f25df97f866776e914c7b5783b93b74be63ba0aebe5.exe File opened for modification C:\Windows\System32\GroupPolicy\GPT.INI 35cca66849f128ef5d2a4f25df97f866776e914c7b5783b93b74be63ba0aebe5.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 196 2200 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 35cca66849f128ef5d2a4f25df97f866776e914c7b5783b93b74be63ba0aebe5.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 35cca66849f128ef5d2a4f25df97f866776e914c7b5783b93b74be63ba0aebe5.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 1436 schtasks.exe 4556 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2200 35cca66849f128ef5d2a4f25df97f866776e914c7b5783b93b74be63ba0aebe5.exe 2200 35cca66849f128ef5d2a4f25df97f866776e914c7b5783b93b74be63ba0aebe5.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 2200 wrote to memory of 1436 2200 35cca66849f128ef5d2a4f25df97f866776e914c7b5783b93b74be63ba0aebe5.exe 74 PID 2200 wrote to memory of 1436 2200 35cca66849f128ef5d2a4f25df97f866776e914c7b5783b93b74be63ba0aebe5.exe 74 PID 2200 wrote to memory of 1436 2200 35cca66849f128ef5d2a4f25df97f866776e914c7b5783b93b74be63ba0aebe5.exe 74 PID 2200 wrote to memory of 4556 2200 35cca66849f128ef5d2a4f25df97f866776e914c7b5783b93b74be63ba0aebe5.exe 78 PID 2200 wrote to memory of 4556 2200 35cca66849f128ef5d2a4f25df97f866776e914c7b5783b93b74be63ba0aebe5.exe 78 PID 2200 wrote to memory of 4556 2200 35cca66849f128ef5d2a4f25df97f866776e914c7b5783b93b74be63ba0aebe5.exe 78 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2915688436-2954362642-4271300650-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 35cca66849f128ef5d2a4f25df97f866776e914c7b5783b93b74be63ba0aebe5.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2915688436-2954362642-4271300650-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 35cca66849f128ef5d2a4f25df97f866776e914c7b5783b93b74be63ba0aebe5.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\35cca66849f128ef5d2a4f25df97f866776e914c7b5783b93b74be63ba0aebe5.exe"C:\Users\Admin\AppData\Local\Temp\35cca66849f128ef5d2a4f25df97f866776e914c7b5783b93b74be63ba0aebe5.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:2200 -
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:1436
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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:4556
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2200 -s 17402⤵
- Program crash
PID:196
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\??\c:\windows\system32\svchost.exec:\windows\system32\svchost.exe -k localsystemnetworkrestricted -s fhsvc1⤵PID:4588
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum1⤵PID:4764
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1.6MB
MD57372e9843646bb76f1e0dafa9577da52
SHA1c4b697f4a9bf0f8eaed5960903ba1c8880df93d1
SHA25635cca66849f128ef5d2a4f25df97f866776e914c7b5783b93b74be63ba0aebe5
SHA5129af3553399d11dec5744bdb9faf0adb96be21f7986e47c12aec83ed9206cf4d7d80e7f04e6548ea0e4d15df9b0a2387e1d8a60a581731f12c066cf826a172657
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Filesize
3KB
MD52f9ec4705bfa49702d2b45891382a364
SHA111f7ed3f3887f65593bbbf867271130d9c2f25ce
SHA256523bf27701cdcd2c7a8f93295e9c4c75bebd03a2e41537901eb5dc06da2600b6
SHA5129e0d86f2d4ff84ee4750ea846be614d27694fb1a8bb6ec70b315fb1111108a37967327a6fd2282a6559275d5624f7cae65ecadae0263eeccfef5ff86da6ec6f9
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Filesize
92KB
MD54491efe9c997c2bb294866dab785b4a3
SHA1655c178e979acf42eed324d2883b04ef9ba441c3
SHA256197fb907775f182f8a8f6e00e5b514477a096988d10475a63385647c32b361e7
SHA51257c135d0932dd1e11367d34af7808fd524c87507c263e3190105cbc69a4ac1ab730ed31631c860fbde125b99bd5995af797707fbc7063ceb5b1a1a708916d142