Analysis
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max time kernel
140s -
max time network
123s -
platform
windows10-2004_x64 -
resource
win10v2004-20231130-en -
resource tags
arch:x64arch:x86image:win10v2004-20231130-enlocale:en-usos:windows10-2004-x64system -
submitted
13/12/2023, 21:40
Behavioral task
behavioral1
Sample
98affda7cf20520a1b7219ee5397388ee7d61dd3a9ed209f0f03853e9c1be03d.exe
Resource
win10v2004-20231130-en
General
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Target
98affda7cf20520a1b7219ee5397388ee7d61dd3a9ed209f0f03853e9c1be03d.exe
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Size
1.6MB
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MD5
343ff6d92d15dff020c065598bba7c57
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SHA1
1d5f119e3e78c1bd17408a20e9dce62014e30967
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SHA256
98affda7cf20520a1b7219ee5397388ee7d61dd3a9ed209f0f03853e9c1be03d
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SHA512
e14359e9621c0abf3ed8322fb0b34d2716354270e48dd2c0bb6a8845b5094bf720535ef3590ff2b339e18ba6cfe29190c8f73ea1742994a4788894a969c139de
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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 98affda7cf20520a1b7219ee5397388ee7d61dd3a9ed209f0f03853e9c1be03d.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-1-5-21-423100829-2271632622-1028104103-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 98affda7cf20520a1b7219ee5397388ee7d61dd3a9ed209f0f03853e9c1be03d.exe Key opened \REGISTRY\USER\S-1-5-21-423100829-2271632622-1028104103-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 98affda7cf20520a1b7219ee5397388ee7d61dd3a9ed209f0f03853e9c1be03d.exe Key opened \REGISTRY\USER\S-1-5-21-423100829-2271632622-1028104103-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 98affda7cf20520a1b7219ee5397388ee7d61dd3a9ed209f0f03853e9c1be03d.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-423100829-2271632622-1028104103-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MaxLoonaFest131 = "C:\\Users\\Admin\\AppData\\Local\\MaxLoonaFest131\\MaxLoonaFest131.exe" 98affda7cf20520a1b7219ee5397388ee7d61dd3a9ed209f0f03853e9c1be03d.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 27 ipinfo.io 28 ipinfo.io -
Drops file in System32 directory 4 IoCs
description ioc Process File opened for modification C:\Windows\System32\GroupPolicy 98affda7cf20520a1b7219ee5397388ee7d61dd3a9ed209f0f03853e9c1be03d.exe File opened for modification C:\Windows\SysWOW64\GroupPolicy\gpt.ini 98affda7cf20520a1b7219ee5397388ee7d61dd3a9ed209f0f03853e9c1be03d.exe File created C:\Windows\System32\GroupPolicy\Machine\Registry.pol 98affda7cf20520a1b7219ee5397388ee7d61dd3a9ed209f0f03853e9c1be03d.exe File opened for modification C:\Windows\System32\GroupPolicy\GPT.INI 98affda7cf20520a1b7219ee5397388ee7d61dd3a9ed209f0f03853e9c1be03d.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 912 3416 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 98affda7cf20520a1b7219ee5397388ee7d61dd3a9ed209f0f03853e9c1be03d.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 98affda7cf20520a1b7219ee5397388ee7d61dd3a9ed209f0f03853e9c1be03d.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 2936 schtasks.exe 4520 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 3416 98affda7cf20520a1b7219ee5397388ee7d61dd3a9ed209f0f03853e9c1be03d.exe 3416 98affda7cf20520a1b7219ee5397388ee7d61dd3a9ed209f0f03853e9c1be03d.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 3416 wrote to memory of 2936 3416 98affda7cf20520a1b7219ee5397388ee7d61dd3a9ed209f0f03853e9c1be03d.exe 87 PID 3416 wrote to memory of 2936 3416 98affda7cf20520a1b7219ee5397388ee7d61dd3a9ed209f0f03853e9c1be03d.exe 87 PID 3416 wrote to memory of 2936 3416 98affda7cf20520a1b7219ee5397388ee7d61dd3a9ed209f0f03853e9c1be03d.exe 87 PID 3416 wrote to memory of 4520 3416 98affda7cf20520a1b7219ee5397388ee7d61dd3a9ed209f0f03853e9c1be03d.exe 92 PID 3416 wrote to memory of 4520 3416 98affda7cf20520a1b7219ee5397388ee7d61dd3a9ed209f0f03853e9c1be03d.exe 92 PID 3416 wrote to memory of 4520 3416 98affda7cf20520a1b7219ee5397388ee7d61dd3a9ed209f0f03853e9c1be03d.exe 92 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-423100829-2271632622-1028104103-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 98affda7cf20520a1b7219ee5397388ee7d61dd3a9ed209f0f03853e9c1be03d.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-423100829-2271632622-1028104103-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 98affda7cf20520a1b7219ee5397388ee7d61dd3a9ed209f0f03853e9c1be03d.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\98affda7cf20520a1b7219ee5397388ee7d61dd3a9ed209f0f03853e9c1be03d.exe"C:\Users\Admin\AppData\Local\Temp\98affda7cf20520a1b7219ee5397388ee7d61dd3a9ed209f0f03853e9c1be03d.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:3416 -
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:2936
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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:4520
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3416 -s 16922⤵
- Program crash
PID:912
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum1⤵PID:4140
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc1⤵PID:5080
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 3416 -ip 34161⤵PID:3680
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1.6MB
MD5343ff6d92d15dff020c065598bba7c57
SHA11d5f119e3e78c1bd17408a20e9dce62014e30967
SHA25698affda7cf20520a1b7219ee5397388ee7d61dd3a9ed209f0f03853e9c1be03d
SHA512e14359e9621c0abf3ed8322fb0b34d2716354270e48dd2c0bb6a8845b5094bf720535ef3590ff2b339e18ba6cfe29190c8f73ea1742994a4788894a969c139de
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Filesize
3KB
MD58d6c3ee5ee841aa8d3b8af6b83253f51
SHA11fd5f7bef31d5c00f4b84041093f1110e9a7e775
SHA25693e943eafb5e82899c12f9118944f6500d06774b6ae8cc06dd07429a119b8258
SHA5120cb5fbe82c2137b6c36ba361bd8fba38d77c825562078e2fd5ed37ccaeecf7788f88a5836ca48413152f9573173b153e24b56a2327d4d0eca499019f3b242dd1
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Filesize
92KB
MD5e970f07ab6cd9d0072e89d83267cc3d8
SHA1ff5d0c393b555485c8ecd324dccef53bba061818
SHA2565108fd709c712fb6279e6228c2decec833d9dfee5a34c846b3372e3e7e4f3a7e
SHA512c25c645447e3eda6a9648223905f46a77615e9b6729aebb1d829b0278c20052b413e16f4326d57a0b64ab31bdfd691136bc4879d1ea380dbe6efbbefec11951f
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Filesize
116KB
MD5f70aa3fa04f0536280f872ad17973c3d
SHA150a7b889329a92de1b272d0ecf5fce87395d3123
SHA2568d782aa65de6db3538a14da82216e96d5e0a3c60496726e3541a8165bccc65f8
SHA51230675c5c610d9aa32a4c4a4d9c3af7570823cd197f8d2a709222c78e2cd15304bbed80e233e3674ec2f6e33d1961c67fd6a46dc8ba8b1a301cd0722932c03c84