Analysis
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max time kernel
128s -
max time network
136s -
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, 23:20
Behavioral task
behavioral1
Sample
5335237248dbc053bd309b0c669a78ffcb090f227324ab37c5e751366c126adf.exe
Resource
win10v2004-20231127-en
General
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Target
5335237248dbc053bd309b0c669a78ffcb090f227324ab37c5e751366c126adf.exe
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Size
1.6MB
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MD5
993fd1d83a732e9001623878fdcbef73
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SHA1
9cb99e2e854b3ef231afa64c653bc70bcb1c59f3
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SHA256
5335237248dbc053bd309b0c669a78ffcb090f227324ab37c5e751366c126adf
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SHA512
87e3c0cc86dab25ca1fcab28b26d4c7bfd4d3a82d66daa69cc8e60790f8155f4e85766b828e2a31189a687b0633f373dbcb03af20cd00d9935530e68f7a6c8d7
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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 5335237248dbc053bd309b0c669a78ffcb090f227324ab37c5e751366c126adf.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-1-5-21-1067295379-1486014338-1703171060-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 5335237248dbc053bd309b0c669a78ffcb090f227324ab37c5e751366c126adf.exe Key opened \REGISTRY\USER\S-1-5-21-1067295379-1486014338-1703171060-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 5335237248dbc053bd309b0c669a78ffcb090f227324ab37c5e751366c126adf.exe Key opened \REGISTRY\USER\S-1-5-21-1067295379-1486014338-1703171060-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 5335237248dbc053bd309b0c669a78ffcb090f227324ab37c5e751366c126adf.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1067295379-1486014338-1703171060-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MaxLoonaFest131 = "C:\\Users\\Admin\\AppData\\Local\\MaxLoonaFest131\\MaxLoonaFest131.exe" 5335237248dbc053bd309b0c669a78ffcb090f227324ab37c5e751366c126adf.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 25 ipinfo.io 26 ipinfo.io -
Drops file in System32 directory 4 IoCs
description ioc Process File opened for modification C:\Windows\System32\GroupPolicy 5335237248dbc053bd309b0c669a78ffcb090f227324ab37c5e751366c126adf.exe File opened for modification C:\Windows\SysWOW64\GroupPolicy\gpt.ini 5335237248dbc053bd309b0c669a78ffcb090f227324ab37c5e751366c126adf.exe File created C:\Windows\System32\GroupPolicy\Machine\Registry.pol 5335237248dbc053bd309b0c669a78ffcb090f227324ab37c5e751366c126adf.exe File opened for modification C:\Windows\System32\GroupPolicy\GPT.INI 5335237248dbc053bd309b0c669a78ffcb090f227324ab37c5e751366c126adf.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 1416 4416 WerFault.exe 85 -
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 5335237248dbc053bd309b0c669a78ffcb090f227324ab37c5e751366c126adf.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 5335237248dbc053bd309b0c669a78ffcb090f227324ab37c5e751366c126adf.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 540 schtasks.exe 576 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 4416 5335237248dbc053bd309b0c669a78ffcb090f227324ab37c5e751366c126adf.exe 4416 5335237248dbc053bd309b0c669a78ffcb090f227324ab37c5e751366c126adf.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 4416 wrote to memory of 540 4416 5335237248dbc053bd309b0c669a78ffcb090f227324ab37c5e751366c126adf.exe 87 PID 4416 wrote to memory of 540 4416 5335237248dbc053bd309b0c669a78ffcb090f227324ab37c5e751366c126adf.exe 87 PID 4416 wrote to memory of 540 4416 5335237248dbc053bd309b0c669a78ffcb090f227324ab37c5e751366c126adf.exe 87 PID 4416 wrote to memory of 576 4416 5335237248dbc053bd309b0c669a78ffcb090f227324ab37c5e751366c126adf.exe 91 PID 4416 wrote to memory of 576 4416 5335237248dbc053bd309b0c669a78ffcb090f227324ab37c5e751366c126adf.exe 91 PID 4416 wrote to memory of 576 4416 5335237248dbc053bd309b0c669a78ffcb090f227324ab37c5e751366c126adf.exe 91 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1067295379-1486014338-1703171060-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 5335237248dbc053bd309b0c669a78ffcb090f227324ab37c5e751366c126adf.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1067295379-1486014338-1703171060-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 5335237248dbc053bd309b0c669a78ffcb090f227324ab37c5e751366c126adf.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\5335237248dbc053bd309b0c669a78ffcb090f227324ab37c5e751366c126adf.exe"C:\Users\Admin\AppData\Local\Temp\5335237248dbc053bd309b0c669a78ffcb090f227324ab37c5e751366c126adf.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:4416 -
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:540
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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:576
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4416 -s 17242⤵
- Program crash
PID:1416
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc1⤵PID:4200
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum1⤵PID:1060
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4416 -ip 44161⤵PID:3028
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1.6MB
MD5993fd1d83a732e9001623878fdcbef73
SHA19cb99e2e854b3ef231afa64c653bc70bcb1c59f3
SHA2565335237248dbc053bd309b0c669a78ffcb090f227324ab37c5e751366c126adf
SHA51287e3c0cc86dab25ca1fcab28b26d4c7bfd4d3a82d66daa69cc8e60790f8155f4e85766b828e2a31189a687b0633f373dbcb03af20cd00d9935530e68f7a6c8d7
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Filesize
3KB
MD551befc524843b6898f87f18c214c1cb1
SHA1429c3c6de923d67e41201ad7942b901efa346d9a
SHA25629d0771a2a2a911b6b3040da5e80f179ece7112d955f39477881328222f594fe
SHA51237fa84109a2c5061d8a7bef4944a691e42bc6c78e9b8a7f8b2cbab1508a306e252dadea1a67724743c29bf8802d53248dc1dbe7734ea6167c6c48c87b6107a60
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Filesize
92KB
MD515b15858232eb73939154fa51070f7d9
SHA1c5d442be8afd48c12f3e10324d74c274ebad25d8
SHA256415b5d95ff3e636716deaa385106694fcc257f82be4fe831fdaed420bba50cf2
SHA5128477c2a94ecbecff9d79d3f73713d568ab29260cd51397f54939629531aa84eeaaffc742bef744da071718b597b15e8870c547cf1dfeb122686bb9e59a7dfd86
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Filesize
116KB
MD5f70aa3fa04f0536280f872ad17973c3d
SHA150a7b889329a92de1b272d0ecf5fce87395d3123
SHA2568d782aa65de6db3538a14da82216e96d5e0a3c60496726e3541a8165bccc65f8
SHA51230675c5c610d9aa32a4c4a4d9c3af7570823cd197f8d2a709222c78e2cd15304bbed80e233e3674ec2f6e33d1961c67fd6a46dc8ba8b1a301cd0722932c03c84