Analysis
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max time kernel
138s -
max time network
149s -
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, 21:42
Behavioral task
behavioral1
Sample
8bbe56e2eef6db7f63f12779f40d894e384e749535fad9dcf390544604c80fa2.exe
Resource
win10v2004-20231130-en
General
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Target
8bbe56e2eef6db7f63f12779f40d894e384e749535fad9dcf390544604c80fa2.exe
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Size
1.6MB
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MD5
26fba4d45045cd4843f4da044783ed47
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SHA1
c75049051c0160f0cc1b08ec73c0914a9fac7400
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SHA256
8bbe56e2eef6db7f63f12779f40d894e384e749535fad9dcf390544604c80fa2
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SHA512
f1a6d2a5606834b139cf8b7282fb07cdbf81ec2c0a63e2dbbbd2f281b71029d5b1f3a0a8b1ffc94d450fae9632987a420c94ed1ae66b0ef8f49d163c4bc3f200
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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 8bbe56e2eef6db7f63f12779f40d894e384e749535fad9dcf390544604c80fa2.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-1-5-21-596315103-1488671723-776734015-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 8bbe56e2eef6db7f63f12779f40d894e384e749535fad9dcf390544604c80fa2.exe Key opened \REGISTRY\USER\S-1-5-21-596315103-1488671723-776734015-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 8bbe56e2eef6db7f63f12779f40d894e384e749535fad9dcf390544604c80fa2.exe Key opened \REGISTRY\USER\S-1-5-21-596315103-1488671723-776734015-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 8bbe56e2eef6db7f63f12779f40d894e384e749535fad9dcf390544604c80fa2.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-596315103-1488671723-776734015-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MaxLoonaFest131 = "C:\\Users\\Admin\\AppData\\Local\\MaxLoonaFest131\\MaxLoonaFest131.exe" 8bbe56e2eef6db7f63f12779f40d894e384e749535fad9dcf390544604c80fa2.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 21 ipinfo.io 23 ipinfo.io -
Drops file in System32 directory 4 IoCs
description ioc Process File opened for modification C:\Windows\System32\GroupPolicy 8bbe56e2eef6db7f63f12779f40d894e384e749535fad9dcf390544604c80fa2.exe File opened for modification C:\Windows\SysWOW64\GroupPolicy\gpt.ini 8bbe56e2eef6db7f63f12779f40d894e384e749535fad9dcf390544604c80fa2.exe File created C:\Windows\System32\GroupPolicy\Machine\Registry.pol 8bbe56e2eef6db7f63f12779f40d894e384e749535fad9dcf390544604c80fa2.exe File opened for modification C:\Windows\System32\GroupPolicy\GPT.INI 8bbe56e2eef6db7f63f12779f40d894e384e749535fad9dcf390544604c80fa2.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 1060 3544 WerFault.exe 83 -
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 8bbe56e2eef6db7f63f12779f40d894e384e749535fad9dcf390544604c80fa2.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 8bbe56e2eef6db7f63f12779f40d894e384e749535fad9dcf390544604c80fa2.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 1264 schtasks.exe 4092 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 3544 8bbe56e2eef6db7f63f12779f40d894e384e749535fad9dcf390544604c80fa2.exe 3544 8bbe56e2eef6db7f63f12779f40d894e384e749535fad9dcf390544604c80fa2.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 3544 wrote to memory of 1264 3544 8bbe56e2eef6db7f63f12779f40d894e384e749535fad9dcf390544604c80fa2.exe 88 PID 3544 wrote to memory of 1264 3544 8bbe56e2eef6db7f63f12779f40d894e384e749535fad9dcf390544604c80fa2.exe 88 PID 3544 wrote to memory of 1264 3544 8bbe56e2eef6db7f63f12779f40d894e384e749535fad9dcf390544604c80fa2.exe 88 PID 3544 wrote to memory of 4092 3544 8bbe56e2eef6db7f63f12779f40d894e384e749535fad9dcf390544604c80fa2.exe 92 PID 3544 wrote to memory of 4092 3544 8bbe56e2eef6db7f63f12779f40d894e384e749535fad9dcf390544604c80fa2.exe 92 PID 3544 wrote to memory of 4092 3544 8bbe56e2eef6db7f63f12779f40d894e384e749535fad9dcf390544604c80fa2.exe 92 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-596315103-1488671723-776734015-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 8bbe56e2eef6db7f63f12779f40d894e384e749535fad9dcf390544604c80fa2.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-596315103-1488671723-776734015-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 8bbe56e2eef6db7f63f12779f40d894e384e749535fad9dcf390544604c80fa2.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\8bbe56e2eef6db7f63f12779f40d894e384e749535fad9dcf390544604c80fa2.exe"C:\Users\Admin\AppData\Local\Temp\8bbe56e2eef6db7f63f12779f40d894e384e749535fad9dcf390544604c80fa2.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:3544 -
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:1264
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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:4092
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3544 -s 16842⤵
- Program crash
PID:1060
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc1⤵PID:1916
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum1⤵PID:3560
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3544 -ip 35441⤵PID:2336
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1.6MB
MD526fba4d45045cd4843f4da044783ed47
SHA1c75049051c0160f0cc1b08ec73c0914a9fac7400
SHA2568bbe56e2eef6db7f63f12779f40d894e384e749535fad9dcf390544604c80fa2
SHA512f1a6d2a5606834b139cf8b7282fb07cdbf81ec2c0a63e2dbbbd2f281b71029d5b1f3a0a8b1ffc94d450fae9632987a420c94ed1ae66b0ef8f49d163c4bc3f200
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Filesize
3KB
MD5716919b16349092602130594cb68e03e
SHA1f80d35637e9251b35b50fb5de01e6b953273993b
SHA256ab04bff77dfe4c5acc9625f23b19bd81e36f227cc4457f8ebcd9b92a6fc121a4
SHA512287837c142446fc725fecfaf83bcf1eb5350054c536c53d8275041ddcec009262347dee5848a247261653ef94ce06660d1e25c1846e299e6a092083713e76fea
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Filesize
92KB
MD55bca7f96843d97e2c39afbb8b5f9865b
SHA1e64666a5d705a768e2351621577a386400111251
SHA256e25c46923271e687a972edfcf511d7685c24ce2e509a5b10d0ba4cd6f2bfeab2
SHA51240771d495b407c0ede8ad3e5d8e77cf588a607426f0597f0c10a81ec7b2614f28a66a1c5ff36bf8bf6905bdc6b537d8cc5a749725adfc57f72ec3c9ee17f76d3
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Filesize
116KB
MD5f70aa3fa04f0536280f872ad17973c3d
SHA150a7b889329a92de1b272d0ecf5fce87395d3123
SHA2568d782aa65de6db3538a14da82216e96d5e0a3c60496726e3541a8165bccc65f8
SHA51230675c5c610d9aa32a4c4a4d9c3af7570823cd197f8d2a709222c78e2cd15304bbed80e233e3674ec2f6e33d1961c67fd6a46dc8ba8b1a301cd0722932c03c84