Analysis
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max time kernel
149s -
max time network
163s -
platform
windows10-2004_x64 -
resource
win10v2004-20240611-en -
resource tags
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submitted
30-06-2024 21:23
General
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Target
2024-06-30_21202d527bb25a3d3d5d9a3120cbb010_bkransomware.exe
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Size
524KB
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MD5
21202d527bb25a3d3d5d9a3120cbb010
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SHA1
b97381cd878b90b4d88afd8068d2055602d4b663
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SHA256
883552dd63280cad78c0b565fbcd1d86f341f9cf9efae85130397da08f6b0a36
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SHA512
aa7812e19fcec72dcf508028d9b902adf68da20f6dbaced5acd2ef5e205f418d60086518b815eb160a336e01ddbf5e318e8668c28ea7fe3587c9a1e53807c23b
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SSDEEP
6144:KR2N0LGuHjvd1YTss408BomB8ePhrlp49MPOGyf3/09tAFP4syvIFWaCM:KRFrYhOJPhrlOwOaW4pISM
Score
10/10
Malware Config
Extracted
Family
sality
C2
http://89.119.67.154/testo5/
http://kukutrustnet777.info/home.gif
http://kukutrustnet888.info/home.gif
http://kukutrustnet987.info/home.gif
Signatures
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Modifies firewall policy service 3 TTPs 3 IoCs
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Sality
Sality is backdoor written in C++, first discovered in 2003.
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UAC bypass 3 TTPs 1 IoCs
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Windows security bypass 2 TTPs 6 IoCs
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Detects executables packed with Sality Polymorphic Code Generator or Simple Poly Engine or Sality 11 IoCs
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UPX dump on OEP (original entry point) 12 IoCs
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UPX packed file 11 IoCs
Detects executables packed with UPX/modified UPX open source packer.
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Windows security modification 2 TTPs 7 IoCs
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Checks whether UAC is enabled 1 TTPs 1 IoCs
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Drops file in Windows directory 2 IoCs
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Suspicious behavior: EnumeratesProcesses 2 IoCs
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Suspicious use of AdjustPrivilegeToken 64 IoCs
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Suspicious use of SetWindowsHookEx 3 IoCs
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Suspicious use of WriteProcessMemory 19 IoCs
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System policy modification 1 TTPs 1 IoCs
Processes
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C:\Windows\system32\fontdrvhost.exe"fontdrvhost.exe"1⤵
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C:\Windows\system32\fontdrvhost.exe"fontdrvhost.exe"1⤵
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C:\Windows\system32\dwm.exe"dwm.exe"1⤵
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C:\Windows\system32\sihost.exesihost.exe1⤵
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc1⤵
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C:\Windows\system32\taskhostw.exetaskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}1⤵
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
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C:\Users\Admin\AppData\Local\Temp\2024-06-30_21202d527bb25a3d3d5d9a3120cbb010_bkransomware.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-30_21202d527bb25a3d3d5d9a3120cbb010_bkransomware.exe"2⤵
- Modifies firewall policy service
- UAC bypass
- Windows security bypass
- Windows security modification
- Checks whether UAC is enabled
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- System policy modification
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc1⤵
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C:\Windows\system32\DllHost.exeC:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}1⤵
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C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe"C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca1⤵
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C:\Windows\System32\RuntimeBroker.exeC:\Windows\System32\RuntimeBroker.exe -Embedding1⤵
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C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe"C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca1⤵
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C:\Windows\System32\RuntimeBroker.exeC:\Windows\System32\RuntimeBroker.exe -Embedding1⤵
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C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\InputApp\TextInputHost.exe"C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\InputApp\TextInputHost.exe" -ServerName:InputApp.AppX9jnwykgrccxc8by3hsrsh07r423xzvav.mca1⤵
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C:\Windows\System32\RuntimeBroker.exeC:\Windows\System32\RuntimeBroker.exe -Embedding1⤵
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C:\Windows\System32\RuntimeBroker.exeC:\Windows\System32\RuntimeBroker.exe -Embedding1⤵
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C:\Windows\system32\backgroundTaskHost.exe"C:\Windows\system32\backgroundTaskHost.exe" -ServerName:CortanaUI.AppX3bn25b6f886wmg6twh46972vprk9tnbf.mca1⤵
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C:\Windows\system32\backgroundTaskHost.exe"C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca1⤵
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C:\Windows\system32\BackgroundTaskHost.exe"C:\Windows\system32\BackgroundTaskHost.exe" -ServerName:BackgroundTaskHost.WebAccountProvider1⤵
Network
MITRE ATT&CK Matrix ATT&CK v13
Privilege Escalation
Create or Modify System Process
1Windows Service
1Abuse Elevation Control Mechanism
1Bypass User Account Control
1Replay Monitor
Loading Replay Monitor...
Downloads
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memory/4892-0-0x0000000000400000-0x0000000000488000-memory.dmpFilesize
544KB
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memory/4892-3-0x00000000024A0000-0x000000000355A000-memory.dmpFilesize
16.7MB
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memory/4892-8-0x00000000024A0000-0x000000000355A000-memory.dmpFilesize
16.7MB
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memory/4892-18-0x0000000004810000-0x0000000004811000-memory.dmpFilesize
4KB
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memory/4892-20-0x00000000024A0000-0x000000000355A000-memory.dmpFilesize
16.7MB
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memory/4892-10-0x00000000024A0000-0x000000000355A000-memory.dmpFilesize
16.7MB
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memory/4892-16-0x00000000024A0000-0x000000000355A000-memory.dmpFilesize
16.7MB
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memory/4892-34-0x0000000000400000-0x0000000000488000-memory.dmpFilesize
544KB
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memory/4892-26-0x00000000024A0000-0x000000000355A000-memory.dmpFilesize
16.7MB
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memory/4892-21-0x0000000000BE0000-0x0000000000BE2000-memory.dmpFilesize
8KB
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memory/4892-12-0x00000000024A0000-0x000000000355A000-memory.dmpFilesize
16.7MB
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memory/4892-9-0x00000000024A0000-0x000000000355A000-memory.dmpFilesize
16.7MB
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memory/4892-5-0x00000000024A0000-0x000000000355A000-memory.dmpFilesize
16.7MB
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memory/4892-6-0x00000000024A0000-0x000000000355A000-memory.dmpFilesize
16.7MB
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memory/4892-19-0x0000000000BE0000-0x0000000000BE2000-memory.dmpFilesize
8KB
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memory/4892-17-0x0000000000BE0000-0x0000000000BE2000-memory.dmpFilesize
8KB
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memory/4892-4-0x00000000024A0000-0x000000000355A000-memory.dmpFilesize
16.7MB