Analysis
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max time kernel
131s -
max time network
142s -
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, 23:17
Behavioral task
behavioral1
Sample
cd2c825d681a1b4bb9fd2fd8220eea207137fdb0a4ef1281c02a5bceb6ffc712.exe
Resource
win10-20231129-en
General
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Target
cd2c825d681a1b4bb9fd2fd8220eea207137fdb0a4ef1281c02a5bceb6ffc712.exe
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Size
1.6MB
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MD5
26aa5a6aefb7f748a509d2056ee68baa
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SHA1
27e2cf9e54276b78125da8d5543da4ac162bbe47
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SHA256
cd2c825d681a1b4bb9fd2fd8220eea207137fdb0a4ef1281c02a5bceb6ffc712
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SHA512
a44adece8b6903bd4b2f666523e109bb927d21a8f2a937154fb32bcba226b9bdcddd5769aa989824bef92b65cc097e771d9d27d121b050ab26630540ef3bb5d3
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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 cd2c825d681a1b4bb9fd2fd8220eea207137fdb0a4ef1281c02a5bceb6ffc712.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\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 cd2c825d681a1b4bb9fd2fd8220eea207137fdb0a4ef1281c02a5bceb6ffc712.exe Key opened \REGISTRY\USER\S-1-5-21-3171942101-2809460380-3727589934-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 cd2c825d681a1b4bb9fd2fd8220eea207137fdb0a4ef1281c02a5bceb6ffc712.exe Key opened \REGISTRY\USER\S-1-5-21-3171942101-2809460380-3727589934-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 cd2c825d681a1b4bb9fd2fd8220eea207137fdb0a4ef1281c02a5bceb6ffc712.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" cd2c825d681a1b4bb9fd2fd8220eea207137fdb0a4ef1281c02a5bceb6ffc712.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 cd2c825d681a1b4bb9fd2fd8220eea207137fdb0a4ef1281c02a5bceb6ffc712.exe File opened for modification C:\Windows\SysWOW64\GroupPolicy\gpt.ini cd2c825d681a1b4bb9fd2fd8220eea207137fdb0a4ef1281c02a5bceb6ffc712.exe File created C:\Windows\System32\GroupPolicy\Machine\Registry.pol cd2c825d681a1b4bb9fd2fd8220eea207137fdb0a4ef1281c02a5bceb6ffc712.exe File opened for modification C:\Windows\System32\GroupPolicy\GPT.INI cd2c825d681a1b4bb9fd2fd8220eea207137fdb0a4ef1281c02a5bceb6ffc712.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 4696 4376 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 cd2c825d681a1b4bb9fd2fd8220eea207137fdb0a4ef1281c02a5bceb6ffc712.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString cd2c825d681a1b4bb9fd2fd8220eea207137fdb0a4ef1281c02a5bceb6ffc712.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 2800 schtasks.exe 2304 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 4376 cd2c825d681a1b4bb9fd2fd8220eea207137fdb0a4ef1281c02a5bceb6ffc712.exe 4376 cd2c825d681a1b4bb9fd2fd8220eea207137fdb0a4ef1281c02a5bceb6ffc712.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 4376 wrote to memory of 2800 4376 cd2c825d681a1b4bb9fd2fd8220eea207137fdb0a4ef1281c02a5bceb6ffc712.exe 74 PID 4376 wrote to memory of 2800 4376 cd2c825d681a1b4bb9fd2fd8220eea207137fdb0a4ef1281c02a5bceb6ffc712.exe 74 PID 4376 wrote to memory of 2800 4376 cd2c825d681a1b4bb9fd2fd8220eea207137fdb0a4ef1281c02a5bceb6ffc712.exe 74 PID 4376 wrote to memory of 2304 4376 cd2c825d681a1b4bb9fd2fd8220eea207137fdb0a4ef1281c02a5bceb6ffc712.exe 79 PID 4376 wrote to memory of 2304 4376 cd2c825d681a1b4bb9fd2fd8220eea207137fdb0a4ef1281c02a5bceb6ffc712.exe 79 PID 4376 wrote to memory of 2304 4376 cd2c825d681a1b4bb9fd2fd8220eea207137fdb0a4ef1281c02a5bceb6ffc712.exe 79 -
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 cd2c825d681a1b4bb9fd2fd8220eea207137fdb0a4ef1281c02a5bceb6ffc712.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 cd2c825d681a1b4bb9fd2fd8220eea207137fdb0a4ef1281c02a5bceb6ffc712.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\cd2c825d681a1b4bb9fd2fd8220eea207137fdb0a4ef1281c02a5bceb6ffc712.exe"C:\Users\Admin\AppData\Local\Temp\cd2c825d681a1b4bb9fd2fd8220eea207137fdb0a4ef1281c02a5bceb6ffc712.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:4376 -
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:2800
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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:2304
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4376 -s 15642⤵
- Program crash
PID:4696
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\??\c:\windows\system32\svchost.exec:\windows\system32\svchost.exe -k localsystemnetworkrestricted -s fhsvc1⤵PID:1572
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum1⤵PID:1520
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1.6MB
MD526aa5a6aefb7f748a509d2056ee68baa
SHA127e2cf9e54276b78125da8d5543da4ac162bbe47
SHA256cd2c825d681a1b4bb9fd2fd8220eea207137fdb0a4ef1281c02a5bceb6ffc712
SHA512a44adece8b6903bd4b2f666523e109bb927d21a8f2a937154fb32bcba226b9bdcddd5769aa989824bef92b65cc097e771d9d27d121b050ab26630540ef3bb5d3
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Filesize
3KB
MD51588c87f7e789a701aa9469a66544498
SHA1a1c9691890bc9230f11b0abf3e4ae74e97e19820
SHA25652a3c90354b8277fb1db4b29463e8fc0a3f2688bd03c65c9941f1d7d712130f6
SHA512cf3e8f81ad72e9d1bcef768786b776b72806738327332f96f031c13e318debb55a271a3168fe2859d0ca39a2c8451d20c7560c995c4ed291651374f4093db8da
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Filesize
92KB
MD5d540e45d4e0edb6aab5ed14cc52f1fa5
SHA10c9279b204416dfa86ee22993bd3325b5bc762b1
SHA256ddd7cbb13ec9dca8859d1a0f54d3f326c0097a8d2809636d96d2e4d9cfa86153
SHA5123dc3b50b4948f522f4746a0ef63cdc40995dad3a3ac901b277a37296a33eee2977121f7aa529d9ef7f0cb878c6e15fac6c5570f1e5f73e73b5379633bd0caf9f