Analysis
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max time kernel
149s -
max time network
157s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
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submitted
18-05-2024 21:07
General
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Target
2024-05-18_633093bdaa92743e25b6dc1d5df47d45_bkransomware.exe
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Size
516KB
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MD5
633093bdaa92743e25b6dc1d5df47d45
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SHA1
373731986ec7fa0934df1a45062e9d44177f440d
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SHA256
0dc12fbb0282f1fc64239d64c0b37af0e0f953083130bd909d2b9b57575d5e6e
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SHA512
23e59cdf9991935d78e5d5bdc58e3a9d41032384c836a1eae63070aedf1e03edd68e91722bd059bbe9940c36d48c462880d0825a108f38fac9579fb081350377
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SSDEEP
6144:GoyZmTAsfJFakxaLjcMkc0Cax1PDGp6bYA0w601+dNT9/0626ASkVOAFplmO6bB:GoyIJsMPrPSp6bYboEdNYmOa
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 2 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 12 IoCs
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UPX dump on OEP (original entry point) 13 IoCs
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UPX packed file 12 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 17 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\2024-05-18_633093bdaa92743e25b6dc1d5df47d45_bkransomware.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-18_633093bdaa92743e25b6dc1d5df47d45_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\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\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⤵
Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Create or Modify System Process
1Windows Service
1Replay Monitor
Loading Replay Monitor...
Downloads
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memory/1420-0-0x0000000000400000-0x0000000000486000-memory.dmpFilesize
536KB
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memory/1420-1-0x0000000002390000-0x000000000344A000-memory.dmpFilesize
16.7MB
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memory/1420-4-0x0000000002390000-0x000000000344A000-memory.dmpFilesize
16.7MB
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memory/1420-3-0x0000000002390000-0x000000000344A000-memory.dmpFilesize
16.7MB
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memory/1420-5-0x0000000002390000-0x000000000344A000-memory.dmpFilesize
16.7MB
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memory/1420-19-0x0000000002390000-0x000000000344A000-memory.dmpFilesize
16.7MB
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memory/1420-21-0x0000000002390000-0x000000000344A000-memory.dmpFilesize
16.7MB
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memory/1420-22-0x0000000002390000-0x000000000344A000-memory.dmpFilesize
16.7MB
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memory/1420-20-0x0000000002390000-0x000000000344A000-memory.dmpFilesize
16.7MB
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memory/1420-13-0x0000000002390000-0x000000000344A000-memory.dmpFilesize
16.7MB
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memory/1420-7-0x0000000002390000-0x000000000344A000-memory.dmpFilesize
16.7MB
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memory/1420-18-0x0000000003D00000-0x0000000003D02000-memory.dmpFilesize
8KB
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memory/1420-17-0x0000000003E10000-0x0000000003E11000-memory.dmpFilesize
4KB
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memory/1420-16-0x0000000003D00000-0x0000000003D02000-memory.dmpFilesize
8KB
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memory/1420-14-0x0000000003D00000-0x0000000003D02000-memory.dmpFilesize
8KB
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memory/1420-6-0x0000000002390000-0x000000000344A000-memory.dmpFilesize
16.7MB
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memory/1420-23-0x0000000002390000-0x000000000344A000-memory.dmpFilesize
16.7MB
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memory/1420-35-0x0000000000400000-0x0000000000486000-memory.dmpFilesize
536KB