Analysis
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max time kernel
144s -
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, 23:31
Behavioral task
behavioral1
Sample
0491939a5620185acba67ba52090ea21998f2a1791cbe81c6240a7ec37fbd91f.exe
Resource
win10-20231129-en
General
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Target
0491939a5620185acba67ba52090ea21998f2a1791cbe81c6240a7ec37fbd91f.exe
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Size
1.6MB
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MD5
f8917aab4687372d0b67ba8b94155357
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SHA1
cde595362e0601d46008cd0ccdc64253d844948e
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SHA256
0491939a5620185acba67ba52090ea21998f2a1791cbe81c6240a7ec37fbd91f
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SHA512
b92b52acbc2fbd7dfbff1fe288f9fba574aa91c5293579cddcf3310f4671e595d47463160a1f7b129026e598eda2847d4a5cf12db4cfaecd906faf96fed24810
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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 0491939a5620185acba67ba52090ea21998f2a1791cbe81c6240a7ec37fbd91f.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-1-5-21-3700703602-3792238236-1515753225-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 0491939a5620185acba67ba52090ea21998f2a1791cbe81c6240a7ec37fbd91f.exe Key opened \REGISTRY\USER\S-1-5-21-3700703602-3792238236-1515753225-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 0491939a5620185acba67ba52090ea21998f2a1791cbe81c6240a7ec37fbd91f.exe Key opened \REGISTRY\USER\S-1-5-21-3700703602-3792238236-1515753225-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 0491939a5620185acba67ba52090ea21998f2a1791cbe81c6240a7ec37fbd91f.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3700703602-3792238236-1515753225-1000\Software\Microsoft\Windows\CurrentVersion\Run\MaxLoonaFest131 = "C:\\Users\\Admin\\AppData\\Local\\MaxLoonaFest131\\MaxLoonaFest131.exe" 0491939a5620185acba67ba52090ea21998f2a1791cbe81c6240a7ec37fbd91f.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 5 ipinfo.io -
Drops file in System32 directory 4 IoCs
description ioc Process File opened for modification C:\Windows\System32\GroupPolicy 0491939a5620185acba67ba52090ea21998f2a1791cbe81c6240a7ec37fbd91f.exe File opened for modification C:\Windows\SysWOW64\GroupPolicy\gpt.ini 0491939a5620185acba67ba52090ea21998f2a1791cbe81c6240a7ec37fbd91f.exe File created C:\Windows\System32\GroupPolicy\Machine\Registry.pol 0491939a5620185acba67ba52090ea21998f2a1791cbe81c6240a7ec37fbd91f.exe File opened for modification C:\Windows\System32\GroupPolicy\GPT.INI 0491939a5620185acba67ba52090ea21998f2a1791cbe81c6240a7ec37fbd91f.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 3492 4084 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 0491939a5620185acba67ba52090ea21998f2a1791cbe81c6240a7ec37fbd91f.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 0491939a5620185acba67ba52090ea21998f2a1791cbe81c6240a7ec37fbd91f.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 4872 schtasks.exe 5072 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 4084 0491939a5620185acba67ba52090ea21998f2a1791cbe81c6240a7ec37fbd91f.exe 4084 0491939a5620185acba67ba52090ea21998f2a1791cbe81c6240a7ec37fbd91f.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 4084 wrote to memory of 4872 4084 0491939a5620185acba67ba52090ea21998f2a1791cbe81c6240a7ec37fbd91f.exe 74 PID 4084 wrote to memory of 4872 4084 0491939a5620185acba67ba52090ea21998f2a1791cbe81c6240a7ec37fbd91f.exe 74 PID 4084 wrote to memory of 4872 4084 0491939a5620185acba67ba52090ea21998f2a1791cbe81c6240a7ec37fbd91f.exe 74 PID 4084 wrote to memory of 5072 4084 0491939a5620185acba67ba52090ea21998f2a1791cbe81c6240a7ec37fbd91f.exe 78 PID 4084 wrote to memory of 5072 4084 0491939a5620185acba67ba52090ea21998f2a1791cbe81c6240a7ec37fbd91f.exe 78 PID 4084 wrote to memory of 5072 4084 0491939a5620185acba67ba52090ea21998f2a1791cbe81c6240a7ec37fbd91f.exe 78 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3700703602-3792238236-1515753225-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 0491939a5620185acba67ba52090ea21998f2a1791cbe81c6240a7ec37fbd91f.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3700703602-3792238236-1515753225-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 0491939a5620185acba67ba52090ea21998f2a1791cbe81c6240a7ec37fbd91f.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\0491939a5620185acba67ba52090ea21998f2a1791cbe81c6240a7ec37fbd91f.exe"C:\Users\Admin\AppData\Local\Temp\0491939a5620185acba67ba52090ea21998f2a1791cbe81c6240a7ec37fbd91f.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:4084 -
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:4872
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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:5072
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4084 -s 16962⤵
- Program crash
PID:3492
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum1⤵PID:2948
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\??\c:\windows\system32\svchost.exec:\windows\system32\svchost.exe -k localsystemnetworkrestricted -s fhsvc1⤵PID:1096
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1.6MB
MD5f8917aab4687372d0b67ba8b94155357
SHA1cde595362e0601d46008cd0ccdc64253d844948e
SHA2560491939a5620185acba67ba52090ea21998f2a1791cbe81c6240a7ec37fbd91f
SHA512b92b52acbc2fbd7dfbff1fe288f9fba574aa91c5293579cddcf3310f4671e595d47463160a1f7b129026e598eda2847d4a5cf12db4cfaecd906faf96fed24810
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Filesize
3KB
MD59b0f14fc0199779103751edcc562ffbd
SHA18476caa9bd78d3997cd24916eedca7f1616ced3e
SHA25609cadfb6feed399df13dbb634b7365cf04635e3518c2c2dfde0b806227e5ceda
SHA5122d7d25b374926c6b07e9aaec34f5c9fc98f8576169d9f1e98f28c9c299d495a151dd830616cf7703f046bca947d206c9878cd4b01d70f2f291394aa14b9d6534
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Filesize
92KB
MD552c1c59f20f3b5384a8bced66c68e36d
SHA14cbc828116e54498871daccf4be75db441df0d9e
SHA25638faf81c41c67d7edb345f0c380c9b1c56f76003f7fe4e3796aa5ac99c25e282
SHA512aaaaad81d473693975461f88891c671d125b8b73807d87dbb158b6d0e6774e3cff5606d1692fc41906e3a29a84a55319163e424d528fc4605a518d6a3a677ec9