Analysis
-
max time kernel
66s -
max time network
49s -
platform
windows10-2004_x64 -
resource
win10v2004-20240419-en -
resource tags
-
submitted
28-04-2024 05:56
General
-
Target
2024-04-28_4c21e96689435a0e7fce101fa07a12b4_bkransomware.exe
-
Size
529KB
-
MD5
4c21e96689435a0e7fce101fa07a12b4
-
SHA1
aa7dee5e9382179ff6d87f9573931706c7c3456e
-
SHA256
38bcc36a3062e9499e3d90b8fececdec2911c231103038450d131c009c2052c3
-
SHA512
9ca802fbaa6d50936d910b99d9c213652ad34f04d3f7f291d2c47a16244b26e329981c830e1ee77e0ed5ada87c78d53b0e76cc4276ada5eb0c3df0ee0621b01e
-
SSDEEP
6144:4YrIOXsqmWzJrdc6GJRQURGUA9PRWLiFSbE56FORFPwcF77aM4FIkq:U2lWRPRhA9PRWg9ocNaMWq
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
http://www.klkjwre9fqwieluoi.info/
http://kukutrustnet777888.info/
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 10 IoCs
-
UPX dump on OEP (original entry point) 11 IoCs
-
UPX packed file 10 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 1 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\2024-04-28_4c21e96689435a0e7fce101fa07a12b4_bkransomware.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-28_4c21e96689435a0e7fce101fa07a12b4_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\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\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 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
-
memory/4036-0-0x0000000000400000-0x000000000048A000-memory.dmpFilesize
552KB
-
memory/4036-1-0x0000000002350000-0x00000000033DE000-memory.dmpFilesize
16.6MB
-
memory/4036-9-0x0000000002350000-0x00000000033DE000-memory.dmpFilesize
16.6MB
-
memory/4036-6-0x0000000002350000-0x00000000033DE000-memory.dmpFilesize
16.6MB
-
memory/4036-14-0x0000000002350000-0x00000000033DE000-memory.dmpFilesize
16.6MB
-
memory/4036-15-0x0000000002350000-0x00000000033DE000-memory.dmpFilesize
16.6MB
-
memory/4036-13-0x0000000002350000-0x00000000033DE000-memory.dmpFilesize
16.6MB
-
memory/4036-5-0x0000000002350000-0x00000000033DE000-memory.dmpFilesize
16.6MB
-
memory/4036-16-0x0000000002350000-0x00000000033DE000-memory.dmpFilesize
16.6MB
-
memory/4036-27-0x0000000000400000-0x000000000048A000-memory.dmpFilesize
552KB
-
memory/4036-12-0x0000000003AC0000-0x0000000003AC2000-memory.dmpFilesize
8KB
-
memory/4036-11-0x0000000002350000-0x00000000033DE000-memory.dmpFilesize
16.6MB
-
memory/4036-10-0x0000000003AC0000-0x0000000003AC2000-memory.dmpFilesize
8KB
-
memory/4036-4-0x0000000002350000-0x00000000033DE000-memory.dmpFilesize
16.6MB
-
memory/4036-8-0x0000000004050000-0x0000000004051000-memory.dmpFilesize
4KB
-
memory/4036-7-0x0000000003AC0000-0x0000000003AC2000-memory.dmpFilesize
8KB