Analysis
- max time kernel
142s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20231127-en - resource tags
arch:x64arch:x86image:win10v2004-20231127-enlocale:en-usos:windows10-2004-x64system - submitted
09/12/2023, 00:56
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20231130-en
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20231127-en
General
- Target file.exe
- Size 959KB
- Sample231209-bac7lsfdb3
- SHA256 e0da66ded237096309adb9855d066caccfd6a8feffc3460f8430ef340505f9e1
- MD5 a31b0a1ce25c58bb3e17bdca860d6f62
- SHA1 8e3fa7de87cf30e27cab0fd717162483d8e64c88
- SHA512 93cf966b2ff9f166c0c5b6bfc5488cb72dce084e4ccea00e24a491333483f826589b2b258fc7f98f641c2f0a596399dc710968aba1c6856414cf9a65769abfa0
- SSDEEP 24576:GsLauiry7YZWYEVdtOb9I5lc+OPOxWlr8oi6pGsUJF:F+uWtb9sl6PO4WC6F
- 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-1-5-21-1067295379-1486014338-1703171060-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 file.exe Key opened \REGISTRY\USER\S-1-5-21-1067295379-1486014338-1703171060-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 file.exe Key opened \REGISTRY\USER\S-1-5-21-1067295379-1486014338-1703171060-1000\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-1-5-21-1067295379-1486014338-1703171060-1000\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 14 ipinfo.io 15 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 2968 4572 WerFault.exe 83 - 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 3320 schtasks.exe 4760 schtasks.exe - Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 4572 file.exe 4572 file.exe - Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeManageVolumePrivilege 1884 svchost.exe - Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 4572 wrote to memory of 3320 4572 file.exe 86 PID 4572 wrote to memory of 3320 4572 file.exe 86 PID 4572 wrote to memory of 3320 4572 file.exe 86 PID 4572 wrote to memory of 4760 4572 file.exe 90 PID 4572 wrote to memory of 4760 4572 file.exe 90 PID 4572 wrote to memory of 4760 4572 file.exe 90 - 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 file.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 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:4572 -
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:3320
-
-
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:4760
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4572 -s 18242⤵
- Program crash
PID:2968
-
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc1⤵PID:4116
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum1⤵PID:3992
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4572 -ip 45721⤵PID:4400
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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:2272
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k UnistackSvcGroup1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1884
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe
- Size 959KB
- SHA256 e0da66ded237096309adb9855d066caccfd6a8feffc3460f8430ef340505f9e1
- MD5 a31b0a1ce25c58bb3e17bdca860d6f62
- SHA1 8e3fa7de87cf30e27cab0fd717162483d8e64c88
- SHA512 93cf966b2ff9f166c0c5b6bfc5488cb72dce084e4ccea00e24a491333483f826589b2b258fc7f98f641c2f0a596399dc710968aba1c6856414cf9a65769abfa0
- SSDEEP 24576:GsLauiry7YZWYEVdtOb9I5lc+OPOxWlr8oi6pGsUJF:F+uWtb9sl6PO4WC6F
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Comms\UnistoreDB\store.jfm
- Size 16KB
- SHA256 2e9e25f4752f076552e1e084209d7f370028fee915e153b39567ea7d6e504c04
- MD5 ba4c2db2b3be0148b703682574ec35da
- SHA1 8a2dd219bd9afb02ad91d52addf196b458da5d90
- SHA512 6eb45fbaad1417192828cd37368e75e8cc5bbb170e156566a6522dd4f318e2aaeded6e096f0a739a5eb89b4e0ac5878bf3e33fe92304cfd550827efd5f5c7b55
- SSDEEP 12:iUotqy1pZ/CmhoySoz/N/cvi9DT/rNvrNB:Fotqupsi7XFUIDTDNzN
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\grandUIAn0Ru_cDlf4GZ2\information.txt
- Size 3KB
- SHA256 6097288f2ad2010fc685f5a4f922380e9c24c41c9d97ca213f419c0724ecae41
- MD5 b9a45b13ef1ab499dae5dc90aa1bc9c7
- SHA1 ab7fe98a05669b1b075acb87098e6c48c1e38781
- SHA512 82159980f1c0415cdc4d3a5d3ef47f011a64f2a71426cd6e490003e6f38d88530870e8ab9bd638068dccd45fbea55194126287aae2c53c046372f1c8fe9bf537
- MD5 SHA1 SHA512