Analysis
-
max time kernel
95s -
max time network
123s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
-
submitted
24-05-2024 20:31
General
-
Target
2024-05-24_f5d4d90a77a4dd9bc5e23dcb30cc5472_bkransomware.exe
-
Size
520KB
-
MD5
f5d4d90a77a4dd9bc5e23dcb30cc5472
-
SHA1
aa03951d0716276bbca4f6aa8b7d9f48b485c851
-
SHA256
677bc6ad1f7eb1d9f45c703d33e1e4c20baef8942a00cee3b106996d6ef59eb6
-
SHA512
8ee6e24fa5b89c8374b994a055e4803bcec2cbbe93c347ca799dbe41e10287fbd1e8562db03746f2af292362187dda59c6a272e8f9fbf3ccebe0668e88ec0877
-
SSDEEP
6144:zoyZmTAsfJFakxaLjcMkc0Cax1PEGp6bYA0w601+dNT9/0626ASkVOAFu51qcDkW:zoyIJsMPrPxp6bYboEdNT8Alz
Malware Config
Extracted
sality
http://89.119.67.154/testo5/
http://kukutrustnet777.info/home.gif
http://kukutrustnet888.info/home.gif
http://kukutrustnet987.info/home.gif
Signatures
-
Modifies firewall policy service 2 TTPs 3 IoCs
-
Sality
Sality is backdoor written in C++, first discovered in 2003.
-
UAC bypass 3 TTPs 1 IoCs
-
Windows security bypass 2 TTPs 6 IoCs
-
Detects executables packed with Sality Polymorphic Code Generator or Simple Poly Engine or Sality 11 IoCs
-
UPX dump on OEP (original entry point) 13 IoCs
-
UPX packed file 11 IoCs
Detects executables packed with UPX/modified UPX open source packer.
-
Windows security modification 2 TTPs 7 IoCs
-
Checks whether UAC is enabled 1 TTPs 1 IoCs
-
Drops file in Windows directory 2 IoCs
-
Suspicious behavior: EnumeratesProcesses 2 IoCs
-
Suspicious use of AdjustPrivilegeToken 64 IoCs
-
Suspicious use of SetWindowsHookEx 3 IoCs
-
Suspicious use of WriteProcessMemory 17 IoCs
-
System policy modification 1 TTPs 1 IoCs
Processes
-
C:\Windows\system32\fontdrvhost.exe"fontdrvhost.exe"1⤵
-
C:\Windows\system32\fontdrvhost.exe"fontdrvhost.exe"1⤵
-
C:\Windows\system32\dwm.exe"dwm.exe"1⤵
-
C:\Windows\system32\sihost.exesihost.exe1⤵
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc1⤵
-
C:\Windows\system32\taskhostw.exetaskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}1⤵
-
C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
-
C:\Users\Admin\AppData\Local\Temp\2024-05-24_f5d4d90a77a4dd9bc5e23dcb30cc5472_bkransomware.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-24_f5d4d90a77a4dd9bc5e23dcb30cc5472_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
-
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc1⤵
-
C:\Windows\system32\DllHost.exeC:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}1⤵
-
C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe"C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca1⤵
-
C:\Windows\System32\RuntimeBroker.exeC:\Windows\System32\RuntimeBroker.exe -Embedding1⤵
-
C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe"C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca1⤵
-
C:\Windows\System32\RuntimeBroker.exeC:\Windows\System32\RuntimeBroker.exe -Embedding1⤵
-
C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\InputApp\TextInputHost.exe"C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\InputApp\TextInputHost.exe" -ServerName:InputApp.AppX9jnwykgrccxc8by3hsrsh07r423xzvav.mca1⤵
-
C:\Windows\System32\RuntimeBroker.exeC:\Windows\System32\RuntimeBroker.exe -Embedding1⤵
-
C:\Windows\system32\backgroundTaskHost.exe"C:\Windows\system32\backgroundTaskHost.exe" -ServerName:CortanaUI.AppX3bn25b6f886wmg6twh46972vprk9tnbf.mca1⤵
-
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
-
Filesize
540KB
-
Filesize
16.7MB
-
Filesize
16.7MB
-
Filesize
16.7MB
-
Filesize
16.7MB
-
Filesize
8KB
-
Filesize
16.7MB
-
Filesize
16.7MB
-
Filesize
16.7MB
-
Filesize
540KB
-
Filesize
16.7MB
-
Filesize
16.7MB
-
Filesize
8KB
-
Filesize
16.7MB
-
Filesize
4KB
-
Filesize
8KB
-
Filesize
16.7MB