Analysis
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max time kernel
149s -
max time network
151s -
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, 21:38
Behavioral task
behavioral1
Sample
b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2.exe
Resource
win10-20231129-en
General
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Target
b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2.exe
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Size
1.6MB
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MD5
f2cad6be8dedc7cbbc9b6ae90e0434af
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SHA1
0885905ddd6e69e10176e2ca5123f82c2d0570e8
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SHA256
b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2
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SHA512
53bd29c6f13481b3a4b824defc014531154d0322e0a77a9907ca8b99be0587c62db2a191f70c1fbc2d8df6540ec8bd396a301aa96e2feb687f75916723878cfa
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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 b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2.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\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2.exe Key opened \REGISTRY\USER\S-1-5-21-3700703602-3792238236-1515753225-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2.exe Key opened \REGISTRY\USER\S-1-5-21-3700703602-3792238236-1515753225-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2.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" b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2.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\GPT.INI b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2.exe File opened for modification C:\Windows\System32\GroupPolicy b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2.exe File opened for modification C:\Windows\SysWOW64\GroupPolicy\gpt.ini b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2.exe File created C:\Windows\System32\GroupPolicy\Machine\Registry.pol b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2.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 4768 4260 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 b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2.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 2640 schtasks.exe 2376 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 4260 b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2.exe 4260 b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 4260 wrote to memory of 2640 4260 b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2.exe 74 PID 4260 wrote to memory of 2640 4260 b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2.exe 74 PID 4260 wrote to memory of 2640 4260 b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2.exe 74 PID 4260 wrote to memory of 2376 4260 b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2.exe 78 PID 4260 wrote to memory of 2376 4260 b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2.exe 78 PID 4260 wrote to memory of 2376 4260 b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2.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 b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2.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 b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2.exe"C:\Users\Admin\AppData\Local\Temp\b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2.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:4260 -
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:2640
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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:2376
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4260 -s 16642⤵
- Program crash
PID:4768
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\??\c:\windows\system32\svchost.exec:\windows\system32\svchost.exe -k localsystemnetworkrestricted -s fhsvc1⤵PID:4008
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum1⤵PID:2232
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1.6MB
MD5f2cad6be8dedc7cbbc9b6ae90e0434af
SHA10885905ddd6e69e10176e2ca5123f82c2d0570e8
SHA256b8381733a0e0cc27a89b18e142ccc1eeb84d012dc381a5819e931fe8153fa1f2
SHA51253bd29c6f13481b3a4b824defc014531154d0322e0a77a9907ca8b99be0587c62db2a191f70c1fbc2d8df6540ec8bd396a301aa96e2feb687f75916723878cfa
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Filesize
3KB
MD5aeb9a06705f5aa2cbe8939564a22085e
SHA15d6539ee3039a9ce948e398c2c2306129ba53393
SHA256d1873016928379fb514e444ec99bb7d496b46e63e7080f223b5003fc036d6d47
SHA512123e583a53b5f4082c0657daf35bf32ab8415c014dba4607aaedb0be7e606161ef55530a600acb25001d1b327d9908a1d83acf22790223f9d521689f01f771c1
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Filesize
92KB
MD552c1c59f20f3b5384a8bced66c68e36d
SHA14cbc828116e54498871daccf4be75db441df0d9e
SHA25638faf81c41c67d7edb345f0c380c9b1c56f76003f7fe4e3796aa5ac99c25e282
SHA512aaaaad81d473693975461f88891c671d125b8b73807d87dbb158b6d0e6774e3cff5606d1692fc41906e3a29a84a55319163e424d528fc4605a518d6a3a677ec9