Analysis
- 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
09/12/2023, 09:57
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20231020-en
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20231130-en
General
- Target file.exe
- Size 988KB
- Sample231209-lyx7sshda9
- SHA256 2e42fa9b9d6447a48b3d6c135dd1f006f2ff96b888bdd1af6bec2fd140672caf
- MD5 14678d663fd61d69dab7d143d986e6dd
- SHA1 4d03e2099b47f683305f8a20d4e22666f44a71f5
- SHA512 7b64516443832ad051e3b68b2556f28d8742d673ef2577cb1edec432a5dbc8f14759aaa418a806e7244b7fff4dba5812999543ef9168e23d9060d8d6eb89b9ce
- SSDEEP 12288:aFBJboR+ORByMT+fJDQBz4ZpIBv3gf4h6O5MYXH8NEqY4Z5Ps6iYVtoaQQ6uHD0L:aFBJuPbT+flWdQf4MO5MCqxjX63thT
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Extracted
-
risepro
-
193.233.132.51
Signatures
- PrivateLoader
PrivateLoader is a downloader sold as a pay-per-install malware distribution service.
- Drops startup file 1 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\FANBooster131.lnk file.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.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- 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 file.exe Key opened \REGISTRY\USER\S-1-5-21-423100829-2271632622-1028104103-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 file.exe Key opened \REGISTRY\USER\S-1-5-21-423100829-2271632622-1028104103-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 file.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" file.exe - Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- 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 26 ipinfo.io 27 ipinfo.io - Drops file in System32 directory 4 IoCs
description ioc Process File opened for modification C:\Windows\System32\GroupPolicy\GPT.INI file.exe File opened for modification C:\Windows\System32\GroupPolicy file.exe File opened for modification C:\Windows\SysWOW64\GroupPolicy\gpt.ini file.exe File created C:\Windows\System32\GroupPolicy\Machine\Registry.pol file.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Program crash 1 IoCs
pid pid_target Process procid_target 4688 1468 WerFault.exe 86 - 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 file.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString file.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 1280 schtasks.exe 4884 schtasks.exe - Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 1468 file.exe 1468 file.exe - Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeManageVolumePrivilege 4060 svchost.exe - Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 1468 wrote to memory of 4884 1468 file.exe 90 PID 1468 wrote to memory of 4884 1468 file.exe 90 PID 1468 wrote to memory of 4884 1468 file.exe 90 PID 1468 wrote to memory of 1280 1468 file.exe 94 PID 1468 wrote to memory of 1280 1468 file.exe 94 PID 1468 wrote to memory of 1280 1468 file.exe 94 - 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 file.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 file.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.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:1468 -
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:4884
-
-
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:1280
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1468 -s 17442⤵
- Program crash
PID:4688
-
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc1⤵PID:4384
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum1⤵PID:4804
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 1468 -ip 14681⤵PID:2132
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C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe1⤵PID:4752
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k UnistackSvcGroup1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4060
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe
- Size 988KB
- SHA256 2e42fa9b9d6447a48b3d6c135dd1f006f2ff96b888bdd1af6bec2fd140672caf
- MD5 14678d663fd61d69dab7d143d986e6dd
- SHA1 4d03e2099b47f683305f8a20d4e22666f44a71f5
- SHA512 7b64516443832ad051e3b68b2556f28d8742d673ef2577cb1edec432a5dbc8f14759aaa418a806e7244b7fff4dba5812999543ef9168e23d9060d8d6eb89b9ce
- SSDEEP 12288:aFBJboR+ORByMT+fJDQBz4ZpIBv3gf4h6O5MYXH8NEqY4Z5Ps6iYVtoaQQ6uHD0L:aFBJuPbT+flWdQf4MO5MCqxjX63thT
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\grandUIAeu3gLcdGtD8QK\information.txt
- Size 3KB
- SHA256 2b03d6537a6d1964b1aa9f1fb80b230d0861ca98d4ce0cf476e2e368b3848f7e
- MD5 f4ab046f535e23cdd56a28940e276647
- SHA1 2a8b459230c1d7438df82cf0df96a0666b1d922e
- SHA512 ebb06ad59d7c6ef56563c092d4e2c44dd77fab5a0b83e7895e380add108a74215ee72c16d7e7ad54b64305b837fd8e792eb3d57c1e063eedd7022e16865b049b
- MD5 SHA1 SHA512