Analysis
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max time kernel
120s -
max time network
150s -
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, 23:32
Behavioral task
behavioral1
Sample
4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.exe
Resource
win10-20231129-en
General
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Target
4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.exe
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Size
1.6MB
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MD5
02dc5249be8e536161a443a119aa781b
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SHA1
8f808253f7a6451b76fb9e8f3515572868992002
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SHA256
4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8
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SHA512
b3fd530ae5c7f8f9fc09d9c39dae5304a83ea9ee021d5e8a5bf1ffe1e1e33dda9d5eddd119bbfc32b3c9bcb1ee81206876cd1bc2a4eec780196239405c5c482a
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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 4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.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-1-5-21-3171942101-2809460380-3727589934-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.exe Key opened \REGISTRY\USER\S-1-5-21-3171942101-2809460380-3727589934-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.exe Key opened \REGISTRY\USER\S-1-5-21-3171942101-2809460380-3727589934-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3171942101-2809460380-3727589934-1000\Software\Microsoft\Windows\CurrentVersion\Run\MaxLoonaFest131 = "C:\\Users\\Admin\\AppData\\Local\\MaxLoonaFest131\\MaxLoonaFest131.exe" 4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.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 5 ipinfo.io 4 ipinfo.io -
Drops file in System32 directory 4 IoCs
description ioc Process File opened for modification C:\Windows\System32\GroupPolicy 4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.exe File opened for modification C:\Windows\SysWOW64\GroupPolicy\gpt.ini 4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.exe File created C:\Windows\System32\GroupPolicy\Machine\Registry.pol 4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.exe File opened for modification C:\Windows\System32\GroupPolicy\GPT.INI 4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.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 3572 400 WerFault.exe 72 -
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 4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.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 4532 schtasks.exe 3140 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 400 4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.exe 400 4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 400 wrote to memory of 4532 400 4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.exe 74 PID 400 wrote to memory of 4532 400 4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.exe 74 PID 400 wrote to memory of 4532 400 4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.exe 74 PID 400 wrote to memory of 3140 400 4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.exe 77 PID 400 wrote to memory of 3140 400 4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.exe 77 PID 400 wrote to memory of 3140 400 4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.exe 77 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3171942101-2809460380-3727589934-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3171942101-2809460380-3727589934-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.exe"C:\Users\Admin\AppData\Local\Temp\4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.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:400 -
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:4532
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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:3140
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 400 -s 15642⤵
- Program crash
PID:3572
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum1⤵PID:4136
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\??\c:\windows\system32\svchost.exec:\windows\system32\svchost.exe -k localsystemnetworkrestricted -s fhsvc1⤵PID:4620
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1.6MB
MD502dc5249be8e536161a443a119aa781b
SHA18f808253f7a6451b76fb9e8f3515572868992002
SHA2564a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8
SHA512b3fd530ae5c7f8f9fc09d9c39dae5304a83ea9ee021d5e8a5bf1ffe1e1e33dda9d5eddd119bbfc32b3c9bcb1ee81206876cd1bc2a4eec780196239405c5c482a
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Filesize
3KB
MD5e1ce00097c882afa32aa61fef7a4e8f1
SHA1abbe19e445653472d7266248c55d90c164da3461
SHA256ade308efb098b889ced8070ecf4f4423ce1771f342f74f295ef156f4bbcc627e
SHA512badb7a724b94a0e1a408a94e930dbd5a172cfa0047e292f26aa5941e37c0d558a250c19f64e3c6cf46b0337ac7ce28ee031a649c13976330f92f8d8bb6b2e024
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Filesize
92KB
MD5d540e45d4e0edb6aab5ed14cc52f1fa5
SHA10c9279b204416dfa86ee22993bd3325b5bc762b1
SHA256ddd7cbb13ec9dca8859d1a0f54d3f326c0097a8d2809636d96d2e4d9cfa86153
SHA5123dc3b50b4948f522f4746a0ef63cdc40995dad3a3ac901b277a37296a33eee2977121f7aa529d9ef7f0cb878c6e15fac6c5570f1e5f73e73b5379633bd0caf9f