Analysis
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max time kernel
146s -
max time network
165s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
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submitted
18-05-2024 21:11
General
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Target
2024-05-18_84c79e107bbd18a74c63814e7c539d16_bkransomware.exe
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Size
528KB
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MD5
84c79e107bbd18a74c63814e7c539d16
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SHA1
c6c641a9f167d0a4d7f880e4886874eb090ba674
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SHA256
eb9361f95836f73003afcac339770452bb718f91d431f8a0348886b5c39437c3
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SHA512
299f8d51634e766e745e427555a70bc634a0393b48d7f6cab2b2d6068f69aa412edd44af59eb4aef26694d44f8c2543c837c3d35b5f5b68a4f678806999a8f7e
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SSDEEP
6144:eoyZmTAsfJFakxaLjcMkc0Cax1PUGp6bYA0w601+dNT9/0626ASkVOAFmplN7YR7:eoyIJsMPrPhp6bYboEdNDUp
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 40 IoCs
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UPX dump on OEP (original entry point) 40 IoCs
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UPX packed file 40 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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Enumerates connected drives 3 TTPs 20 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
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Drops autorun.inf file 1 TTPs 2 IoCs
Malware can abuse Windows Autorun to spread further via attached volumes.
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Drops file in Program Files directory 12 IoCs
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Drops file in Windows directory 5 IoCs
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Suspicious behavior: EnumeratesProcesses 24 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 64 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_84c79e107bbd18a74c63814e7c539d16_bkransomware.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-18_84c79e107bbd18a74c63814e7c539d16_bkransomware.exe"2⤵
- Modifies firewall policy service
- UAC bypass
- Windows security bypass
- Windows security modification
- Checks whether UAC is enabled
- Enumerates connected drives
- Drops autorun.inf file
- Drops file in Program Files directory
- 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:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --no-startup-window1⤵
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=122.0.6261.70 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=122.0.2365.52 --initial-client-data=0x238,0x23c,0x240,0x234,0x2f0,0x7ffd7c282e98,0x7ffd7c282ea4,0x7ffd7c282eb02⤵
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --no-appcompat-clear --gpu-preferences=WAAAAAAAAADgAAAMAAAAAAAAAAAAAAAAAABgAAAAAAA4AAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGAAAAAAAAAAYAAAAAAAAAAgAAAAAAAAACAAAAAAAAAAIAAAAAAAAAA== --mojo-platform-channel-handle=2276 --field-trial-handle=2280,i,1836084024518340990,18250262151825427757,262144 --variations-seed-version /prefetch:22⤵
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --no-appcompat-clear --mojo-platform-channel-handle=2340 --field-trial-handle=2280,i,1836084024518340990,18250262151825427757,262144 --variations-seed-version /prefetch:32⤵
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=service --no-appcompat-clear --mojo-platform-channel-handle=2520 --field-trial-handle=2280,i,1836084024518340990,18250262151825427757,262144 --variations-seed-version /prefetch:82⤵
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --instant-process --no-appcompat-clear --lang=en-US --js-flags=--ms-user-locale= --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=11 --mojo-platform-channel-handle=5312 --field-trial-handle=2280,i,1836084024518340990,18250262151825427757,262144 --variations-seed-version /prefetch:12⤵
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --no-appcompat-clear --lang=en-US --js-flags=--ms-user-locale= --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=12 --mojo-platform-channel-handle=5568 --field-trial-handle=2280,i,1836084024518340990,18250262151825427757,262144 --variations-seed-version /prefetch:12⤵
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1324 --field-trial-handle=2280,i,1836084024518340990,18250262151825427757,262144 --variations-seed-version /prefetch:82⤵
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Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Create or Modify System Process
1Windows Service
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Impair Defenses
3Disable or Modify Tools
3Modify Registry
5Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
97KB
MD57549a7bc34e943061c60e7d2b13d6320
SHA1f183e67a08b55f90ce4cdb677895630fda24eaa0
SHA25641a5a0cf18c9767c1ab8859363d06f7cde46c95e37fe02ddf58b9b5b5e3b8793
SHA5120fe5b8175c7411be3d6a2f12562a0d776666b216ddf9cce2d886937abf34b76475070d6a65c62ef8d3fd486c86e47d7c0c5a8c68ed22299c836fba438d5785d9
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Filesize
16.7MB
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Filesize
16.7MB
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Filesize
16.7MB
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Filesize
16.7MB
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Filesize
16.7MB
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Filesize
16.7MB
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Filesize
4KB
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Filesize
8KB
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Filesize
16.7MB
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Filesize
16.7MB
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Filesize
16.7MB
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Filesize
16.7MB
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Filesize
8KB
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Filesize
8KB
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Filesize
16.7MB
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Filesize
16.7MB
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Filesize
16.7MB
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Filesize
16.7MB
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Filesize
16.7MB
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Filesize
16.7MB
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Filesize
16.7MB
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Filesize
548KB
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Filesize
16.7MB
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Filesize
16.7MB
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Filesize
16.7MB
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Filesize
16.7MB
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Filesize
16.7MB
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Filesize
16.7MB
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Filesize
16.7MB
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Filesize
16.7MB
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Filesize
16.7MB
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Filesize
16.7MB
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Filesize
16.7MB
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Filesize
16.7MB
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Filesize
16.7MB
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Filesize
16.7MB
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Filesize
16.7MB
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Filesize
16.7MB
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Filesize
16.7MB
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Filesize
16.7MB
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Filesize
16.7MB
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Filesize
16.7MB
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Filesize
16.7MB
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Filesize
16.7MB
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Filesize
16.7MB
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Filesize
8KB