Analysis
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max time kernel
142s -
max time network
140s -
platform
windows10-2004_x64 -
resource
win10v2004-20231127-en -
resource tags
arch:x64arch:x86image:win10v2004-20231127-enlocale:en-usos:windows10-2004-x64system -
submitted
13/12/2023, 21:38
Behavioral task
behavioral1
Sample
6f39494069b3176cea8f2e351afbf885a2d94bb6211da2168f827939f8f8c3ea.exe
Resource
win10v2004-20231127-en
General
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Target
6f39494069b3176cea8f2e351afbf885a2d94bb6211da2168f827939f8f8c3ea.exe
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Size
1.6MB
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MD5
b03f6d41e1ead18e1877cfe0caa8abc0
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SHA1
7aa39c03f631018aebe4947cab6e849cb20b498f
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SHA256
6f39494069b3176cea8f2e351afbf885a2d94bb6211da2168f827939f8f8c3ea
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SHA512
b5dd7206ea7e0a72ca1c7f42934f5addc0bc57be11e5e075c77bbe56e9d48dad1b7501f2d88c5310f83a95b5f55417c0df01f8a49b4a880b8a2055fef32790d2
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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 6f39494069b3176cea8f2e351afbf885a2d94bb6211da2168f827939f8f8c3ea.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-1-5-21-2037190880-819243489-950462038-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 6f39494069b3176cea8f2e351afbf885a2d94bb6211da2168f827939f8f8c3ea.exe Key opened \REGISTRY\USER\S-1-5-21-2037190880-819243489-950462038-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 6f39494069b3176cea8f2e351afbf885a2d94bb6211da2168f827939f8f8c3ea.exe Key opened \REGISTRY\USER\S-1-5-21-2037190880-819243489-950462038-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 6f39494069b3176cea8f2e351afbf885a2d94bb6211da2168f827939f8f8c3ea.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2037190880-819243489-950462038-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MaxLoonaFest131 = "C:\\Users\\Admin\\AppData\\Local\\MaxLoonaFest131\\MaxLoonaFest131.exe" 6f39494069b3176cea8f2e351afbf885a2d94bb6211da2168f827939f8f8c3ea.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\SysWOW64\GroupPolicy\gpt.ini 6f39494069b3176cea8f2e351afbf885a2d94bb6211da2168f827939f8f8c3ea.exe File created C:\Windows\System32\GroupPolicy\Machine\Registry.pol 6f39494069b3176cea8f2e351afbf885a2d94bb6211da2168f827939f8f8c3ea.exe File opened for modification C:\Windows\System32\GroupPolicy\GPT.INI 6f39494069b3176cea8f2e351afbf885a2d94bb6211da2168f827939f8f8c3ea.exe File opened for modification C:\Windows\System32\GroupPolicy 6f39494069b3176cea8f2e351afbf885a2d94bb6211da2168f827939f8f8c3ea.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 3076 1872 WerFault.exe 87 -
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 6f39494069b3176cea8f2e351afbf885a2d94bb6211da2168f827939f8f8c3ea.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 6f39494069b3176cea8f2e351afbf885a2d94bb6211da2168f827939f8f8c3ea.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 936 schtasks.exe 4464 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 1872 6f39494069b3176cea8f2e351afbf885a2d94bb6211da2168f827939f8f8c3ea.exe 1872 6f39494069b3176cea8f2e351afbf885a2d94bb6211da2168f827939f8f8c3ea.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 1872 wrote to memory of 936 1872 6f39494069b3176cea8f2e351afbf885a2d94bb6211da2168f827939f8f8c3ea.exe 90 PID 1872 wrote to memory of 936 1872 6f39494069b3176cea8f2e351afbf885a2d94bb6211da2168f827939f8f8c3ea.exe 90 PID 1872 wrote to memory of 936 1872 6f39494069b3176cea8f2e351afbf885a2d94bb6211da2168f827939f8f8c3ea.exe 90 PID 1872 wrote to memory of 4464 1872 6f39494069b3176cea8f2e351afbf885a2d94bb6211da2168f827939f8f8c3ea.exe 94 PID 1872 wrote to memory of 4464 1872 6f39494069b3176cea8f2e351afbf885a2d94bb6211da2168f827939f8f8c3ea.exe 94 PID 1872 wrote to memory of 4464 1872 6f39494069b3176cea8f2e351afbf885a2d94bb6211da2168f827939f8f8c3ea.exe 94 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2037190880-819243489-950462038-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 6f39494069b3176cea8f2e351afbf885a2d94bb6211da2168f827939f8f8c3ea.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2037190880-819243489-950462038-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 6f39494069b3176cea8f2e351afbf885a2d94bb6211da2168f827939f8f8c3ea.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\6f39494069b3176cea8f2e351afbf885a2d94bb6211da2168f827939f8f8c3ea.exe"C:\Users\Admin\AppData\Local\Temp\6f39494069b3176cea8f2e351afbf885a2d94bb6211da2168f827939f8f8c3ea.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:1872 -
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:936
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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:4464
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1872 -s 17162⤵
- Program crash
PID:3076
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc1⤵PID:2352
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum1⤵PID:3044
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1872 -ip 18721⤵PID:708
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1.6MB
MD5b03f6d41e1ead18e1877cfe0caa8abc0
SHA17aa39c03f631018aebe4947cab6e849cb20b498f
SHA2566f39494069b3176cea8f2e351afbf885a2d94bb6211da2168f827939f8f8c3ea
SHA512b5dd7206ea7e0a72ca1c7f42934f5addc0bc57be11e5e075c77bbe56e9d48dad1b7501f2d88c5310f83a95b5f55417c0df01f8a49b4a880b8a2055fef32790d2
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Filesize
3KB
MD51e97084400d1f590fe2f5f8ffc2c523c
SHA1de97565d367ef2b41eb14428c7d663cd1e5f13ae
SHA2561fac184ad04ed0fe7962481636364345509c2b2d7c2a0f1307706694e58e72cc
SHA512436f1cfdf823a4e569528e9d0842feb794b81af70fc8ffd5b656ea0135bde22b55fc83244bd4c464de130906fe67d5267d1d98fdeef25bbeec41083b8ee2ce7d
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Filesize
92KB
MD521363921c6943b0ba12e8c3cbd47a7fd
SHA103bb94c70b12783c4d1962cc7cb9f752ff8a9a54
SHA2562f023e72c5bc9804a60441c14980fa8de30d3118e3d7ce67d8951989b1d90c4a
SHA5123749d95295a281e18f7eca6bdecc45d0d08bc98a4da5d5b8ab21cd5022eed125b1b7a4b96c70ed486750be4eabd4da325ab9a7a1fb497dda4c4f30f9adf8da43
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Filesize
116KB
MD5f70aa3fa04f0536280f872ad17973c3d
SHA150a7b889329a92de1b272d0ecf5fce87395d3123
SHA2568d782aa65de6db3538a14da82216e96d5e0a3c60496726e3541a8165bccc65f8
SHA51230675c5c610d9aa32a4c4a4d9c3af7570823cd197f8d2a709222c78e2cd15304bbed80e233e3674ec2f6e33d1961c67fd6a46dc8ba8b1a301cd0722932c03c84