Analysis
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max time kernel
124s -
max time network
130s -
platform
windows10-1703_x64 -
resource
win10-20231023-en -
resource tags
arch:x64arch:x86image:win10-20231023-enlocale:en-usos:windows10-1703-x64system -
submitted
13/12/2023, 21:35
Behavioral task
behavioral1
Sample
88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.exe
Resource
win10-20231023-en
General
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Target
88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.exe
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Size
1.6MB
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MD5
98a8b379d7fdbecec19bd05d63f84e93
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SHA1
b6aa54bf7c0d2248258a0c7bb2df9fb7febd7a0f
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SHA256
88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6
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SHA512
fe04553cc807ed67b3cfd50dc7a678d553a417daccff390400c583c9d1d4e3909b1c679220908781988df1acf7a731caa2907bd3a24c80065b4d0e61f77c7691
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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 88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.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-1-5-21-2184424523-918736138-622003966-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.exe Key opened \REGISTRY\USER\S-1-5-21-2184424523-918736138-622003966-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.exe Key opened \REGISTRY\USER\S-1-5-21-2184424523-918736138-622003966-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2184424523-918736138-622003966-1000\Software\Microsoft\Windows\CurrentVersion\Run\MaxLoonaFest131 = "C:\\Users\\Admin\\AppData\\Local\\MaxLoonaFest131\\MaxLoonaFest131.exe" 88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.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 88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.exe File opened for modification C:\Windows\SysWOW64\GroupPolicy\gpt.ini 88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.exe File created C:\Windows\System32\GroupPolicy\Machine\Registry.pol 88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.exe File opened for modification C:\Windows\System32\GroupPolicy\GPT.INI 88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.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 3496 2336 WerFault.exe 70 -
Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.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 3544 schtasks.exe 4192 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2336 88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.exe 2336 88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 2336 wrote to memory of 3544 2336 88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.exe 71 PID 2336 wrote to memory of 3544 2336 88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.exe 71 PID 2336 wrote to memory of 3544 2336 88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.exe 71 PID 2336 wrote to memory of 4192 2336 88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.exe 75 PID 2336 wrote to memory of 4192 2336 88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.exe 75 PID 2336 wrote to memory of 4192 2336 88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.exe 75 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2184424523-918736138-622003966-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2184424523-918736138-622003966-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.exe"C:\Users\Admin\AppData\Local\Temp\88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.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:2336 -
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:3544
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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:4192
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2336 -s 16722⤵
- Program crash
PID:3496
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum1⤵PID:4968
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\??\c:\windows\system32\svchost.exec:\windows\system32\svchost.exe -k localsystemnetworkrestricted -s fhsvc1⤵PID:4540
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1.6MB
MD598a8b379d7fdbecec19bd05d63f84e93
SHA1b6aa54bf7c0d2248258a0c7bb2df9fb7febd7a0f
SHA25688bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6
SHA512fe04553cc807ed67b3cfd50dc7a678d553a417daccff390400c583c9d1d4e3909b1c679220908781988df1acf7a731caa2907bd3a24c80065b4d0e61f77c7691
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Filesize
3KB
MD53d5b7cc0717deaccf7c2cc00a77eb15f
SHA1eb117c6a48c5b7211ed98443b8a07358645b583c
SHA256cbcd1c3a3955b9655752c28207c709e2d4df8f616eb98da82a61c2495a986cae
SHA5128714f779302827c7eb1ee993515675daa86b01e38cb477c68c16cdbf70b0a434722ecef3744d34f2dda9f65f8c36154eb0f99e6f3d4ed22aed1f74ab102dfb07
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Filesize
92KB
MD590a4e3db168e5bdc6b5e562ce7f41a06
SHA12bf235c33b3395caefc1b9f1a280f83422f94d40
SHA256fdd37b06f981e619d6690edeaa17ba8d86c66cec9331632f3d9922bb2c6eabf5
SHA512e30f0a67bbdc6507ac5babaa5fe1e0db7cde6b62812f6365fe83293e5fbba3f62db43c80c635a43b3b0ffb2e08ac2faf79eff0d3bea8e2aaaca6c55fb0833c0b