Resubmissions

02/03/2024, 22:38

240302-2kwptaae3710

02/03/2024, 22:34

240302-2g86qsad9610

Analysis

  • max time kernel
    1800s
  • max time network
    1570s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    02/03/2024, 22:38

General

  • Target
    Fake AV/Antivirus2010.exe
  • Size 775KB
  • Sample240302-2kwptaae37
  • SHA256 1501affdcf557a9dcb73ae34d43365d5301532a48328564160fdc1f3acb01e2e
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Modifies security service 2 TTPs 4 IoCs
  • Windows security bypass 2 TTPs 4 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Checks registry for disk virtualization 3 TTPs 1 IoCs

    Detecting virtualization disks is order done to detect sandboxing environments.

  • Enumerates connected drives 3 TTPs 23 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • Drops file in System32 directory 2 IoCs
  • Suspicious use of NtCreateThreadExHideFromDebugger 31 IoCs
  • Suspicious use of SetThreadContext 25 IoCs
  • Drops file in Windows directory 1 IoCs
  • Checks SCSI registry key(s) 3 TTPs 6 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Checks processor information in registry 2 TTPs 6 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 42 IoCs
  • Modifies Internet Explorer settings 1 TTPs 34 IoCs
  • Modifies data under HKEY_USERS 64 IoCs
  • Modifies registry class 6 IoCs
  • Suspicious behavior: EnumeratesProcesses 20 IoCs
  • Suspicious behavior: MapViewOfSection 32 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of UnmapMainImage 5 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

  • Uses Volume Shadow Copy WMI provider

    The Volume Shadow Copy service is used to manage backups/snapshots.

  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalService
    1⤵
      PID:980
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k NetworkService
      1⤵
      • Modifies data under HKEY_USERS
      • Suspicious use of UnmapMainImage
      PID:296
    • C:\Users\Admin\AppData\Local\Temp\Fake AV\Antivirus2010.exe
      "C:\Users\Admin\AppData\Local\Temp\Fake AV\Antivirus2010.exe"
      1⤵
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1184
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Deletes itself
        PID:2240
      • \??\globalroot\systemroot\system32\usеrinit.exe
        /install
        2⤵
        • Sets service image path in registry
        • Executes dropped EXE
        • Drops file in System32 directory
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2088
        • C:\Windows\system32\svchost.exe
          "C:\Windows\system32\svchost.exe"
          3⤵
          • Modifies security service
          • Windows security bypass
          • Modifies system executable filetype association
          • Checks registry for disk virtualization
          • Enumerates connected drives
          • Maps connected drives based on registry
          • Suspicious use of NtCreateThreadExHideFromDebugger
          • Suspicious use of SetThreadContext
          • Checks SCSI registry key(s)
          • Checks processor information in registry
          • Enumerates system info in registry
          • Modifies data under HKEY_USERS
          • Modifies registry class
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SendNotifyMessage
          • Suspicious use of WriteProcessMemory
          PID:2552
          • C:\Program Files\Internet Explorer\iexplore.exe
            "C:\Program Files\Internet Explorer\iexplore.exe" https://secure.2010billing.com/purchase/get.php?i=antvir&advert=3&extern=4&lang=EN
            4⤵
            • Modifies Internet Explorer settings
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:1244
            • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
              "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1244 CREDAT:275457 /prefetch:2
              5⤵
              • Modifies Internet Explorer settings
              • Suspicious use of SetWindowsHookEx
              PID:920
    • C:\Windows\system32\wbem\WMIADAP.EXE
      wmiadap.exe /F /T /R
      1⤵
        PID:940
      • C:\Windows\system32\wbem\wmiprvse.exe
        C:\Windows\system32\wbem\wmiprvse.exe -Embedding
        1⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:1924
      • C:\Windows\system32\DllHost.exe
        C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
        1⤵
          PID:1308
        • C:\Windows\system32\DllHost.exe
          C:\Windows\system32\DllHost.exe /Processid:{F9717507-6651-4EDB-BFF7-AE615179BCCF}
          1⤵
            PID:2432

          Network

                MITRE ATT&CK Enterprise v15

                Replay Monitor

                Loading Replay Monitor...

                Downloads

                94308059B57B3142E455B38A6EB92015

                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
                • Size 67KB
                • SHA256 b42dc237e44cbc9a43400e7d3f9cbd406dbdefd62bfe87328f8663897d69df78
                • MD5 SHA1 SHA512 SSDEEP

                94308059B57B3142E455B38A6EB92015

                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
                • Size 344B
                • SHA256 373edd904a50942869f53e05466b0e4916066815c18be31d935bf22ed75c4b44
                • MD5 SHA1 SHA512

                94308059B57B3142E455B38A6EB92015

                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
                • Size 344B
                • SHA256 498873bada3fdd994b53bfdb8eb6a04c8b30b2601907da6534eb8e03737262df
                • MD5 SHA1 SHA512

                94308059B57B3142E455B38A6EB92015

                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
                • Size 344B
                • SHA256 82c506bea27cd6609ae3e4defdb04b43be7d570371d0320ba0affb7f3af77ba9
                • MD5 SHA1 SHA512

                94308059B57B3142E455B38A6EB92015

                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
                • Size 344B
                • SHA256 a6c96f2afa6f49f97d931c6addf5e84f8a5ae6b610524203947bcc933392aa25
                • MD5 SHA1 SHA512

                94308059B57B3142E455B38A6EB92015

                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
                • Size 344B
                • SHA256 4d84498fb4db8da945c8ed872caf61c444ea82d3f51816b215e52255289f2e5e
                • MD5 SHA1 SHA512

                94308059B57B3142E455B38A6EB92015

                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
                • Size 344B
                • SHA256 7a67aa8f9d88ad91c96e4bcd88eda8bb1b4429e7120e5237ca8c3f483c1ed266
                • MD5 SHA1 SHA512

                94308059B57B3142E455B38A6EB92015

                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
                • Size 344B
                • SHA256 083ab225b1256564cc4498c92f5e48af3cd7115590a43799070f55b9a09699b8
                • MD5 SHA1 SHA512

                94308059B57B3142E455B38A6EB92015

                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
                • Size 344B
                • SHA256 67f4b38fdd501b79ffc454f8d1a7a8852cd8c4e997fabb633f45d40257e8259c
                • MD5 SHA1 SHA512

                94308059B57B3142E455B38A6EB92015

                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
                • Size 344B
                • SHA256 1d84532ef38a9a5c90b5aef7f52aaabe2efdc15ea677f515dfb61eb078837fb4
                • MD5 SHA1 SHA512

                94308059B57B3142E455B38A6EB92015

                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
                • Size 344B
                • SHA256 c2468634890450dcef099d550fa5141fb29bbd6b357cd872f398f25d4d92c34b
                • MD5 SHA1 SHA512

                94308059B57B3142E455B38A6EB92015

                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
                • Size 344B
                • SHA256 7f84656251063a022cd5aabc62771416652fd995e660faa18a7b56b126a40bb2
                • MD5 SHA1 SHA512

                94308059B57B3142E455B38A6EB92015

                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
                • Size 344B
                • SHA256 8e705287b46a90bf854070ba3552b4290404f49777f4ed06ef5578929d058f6a
                • MD5 SHA1 SHA512

                94308059B57B3142E455B38A6EB92015

                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
                • Size 344B
                • SHA256 4aa84982ccadd1ae3828eb71388272ae4db061fcc13bdc5bdcca1b418b780b6b
                • MD5 SHA1 SHA512

                94308059B57B3142E455B38A6EB92015

                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
                • Size 344B
                • SHA256 23ba1a98e8ef2b5fbf3de9b5961e40c792433eef7d5210f2e83ce1ab45c8ed5f
                • MD5 SHA1 SHA512

                94308059B57B3142E455B38A6EB92015

                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
                • Size 344B
                • SHA256 dcac0934c394eff06821646a18b2fe4b231a44eb83a5826ba5787e35ab44fc88
                • MD5 SHA1 SHA512

                94308059B57B3142E455B38A6EB92015

                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
                • Size 344B
                • SHA256 839a73018ae7b59f792b31d9f474315544f17c4df3249e039525c33b4efbb21a
                • MD5 SHA1 SHA512

                94308059B57B3142E455B38A6EB92015

                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
                • Size 344B
                • SHA256 6e0699c9db4123227cb7e79709c660ba201881f0cce5d2315f1c3c16b821c9c1
                • MD5 SHA1 SHA512

                94308059B57B3142E455B38A6EB92015

                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
                • Size 344B
                • SHA256 60a9ab1acecaffe456eb135ca2eae42e52faa71e4194f8a215b1008ac0fea09e
                • MD5 SHA1 SHA512

                94308059B57B3142E455B38A6EB92015

                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
                • Size 344B
                • SHA256 3608203d6ce8b36fb03ac40cf37a9dcc8c0d01e57952da3f23b514d41c266d0d
                • MD5 SHA1 SHA512

                CabBEFF.tmp

                • Path C:\Users\Admin\AppData\Local\Temp\CabBEFF.tmp
                • Size 65KB
                • SHA256 c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d
                • MD5 SHA1 SHA512 SSDEEP

                TarC1E3.tmp

                • Path C:\Users\Admin\AppData\Local\Temp\TarC1E3.tmp
                • Size 175KB
                • SHA256 a6752b7851b591550e4625b832a393aabcc428de18d83e8593cd540f7d7cae22
                • MD5 SHA1 SHA512 SSDEEP

                {E9C1E0AC-C9B1-4c85-94DE-9C1518918D02}.tlb

                • Path C:\Users\Admin\AppData\Local\Temp\{E9C1E0AC-C9B1-4c85-94DE-9C1518918D02}.tlb
                • Size 2KB
                • SHA256 50d712b007a3339855619a4ad283661c07e13ec0a74465ea3d121439005cd1e5
                • MD5 SHA1 SHA512

                exefile.exe

                • Path C:\Windows\System32\exefile.exe
                • Size 115KB
                • SHA256 09cd3c864182b703a1384a15e60424c0ee8c82c3fd19f197c391a0e3ec5bd16e
                • MD5 SHA1 SHA512 SSDEEP

                Microsoft-Windows-Kernel-EventTracing%4Admin.evtx

                • Path C:\Windows\System32\winevt\Logs\Microsoft-Windows-Kernel-EventTracing%4Admin.evtx
                • Size 68KB
                • SHA256 2c5af935a6aa5a84ccf281b70fc33696e17f514433bbfcb5f99001a654a35730
                • MD5 SHA1 SHA512 SSDEEP

                usеrinit.exe

                • Path \Windows\System32\usеrinit.exe
                • Size 139KB
                • SHA256 29b5b65a1cdf119ac7c6c9df76c6843b25a81bd00aa5a5e995ec675e34bf1acb
                • MD5 SHA1 SHA512 SSDEEP

                msiavjyv.dll

                • Path \systemroot\system32\msiavjyv.dll
                • Size 718KB
                • SHA256 be8dbcb59c3181ec518a6934931efc725a128310956fd076f0f0bd537b96a9eb
                • MD5 SHA1 SHA512 SSDEEP

                memory/296-32-0x0000000000900000-0x0000000000906000-memory.dmp

                memory/296-48-0x0000000000900000-0x0000000000906000-memory.dmp

                memory/296-31-0x00000000008E0000-0x00000000008E3000-memory.dmp

                memory/296-38-0x0000000000900000-0x0000000000906000-memory.dmp

                memory/1184-1-0x0000000000400000-0x00000000004C4400-memory.dmp

                memory/1184-2-0x0000000000660000-0x0000000000860000-memory.dmp

                memory/2552-61-0x00000000003D0000-0x00000000003EA000-memory.dmp

                memory/2552-53-0x000007FFFFF80000-0x000007FFFFF90000-memory.dmp

                memory/2552-275-0x00000000003D0000-0x00000000003EA000-memory.dmp

                memory/2552-66-0x0000000002E60000-0x0000000002E80000-memory.dmp

                memory/2552-70-0x0000000002E60000-0x0000000002E80000-memory.dmp

                memory/2552-30-0x00000000003D0000-0x00000000003EA000-memory.dmp

                memory/2552-29-0x00000000003D0000-0x00000000003EA000-memory.dmp

                memory/2552-24-0x00000000003D0000-0x00000000003EA000-memory.dmp

                memory/2552-19-0x00000000003D0000-0x00000000003EA000-memory.dmp

                memory/2552-13-0x00000000003D0000-0x00000000003EA000-memory.dmp

                memory/2552-14-0x0000000000060000-0x0000000000077000-memory.dmp

                memory/2552-217-0x0000000002E60000-0x0000000002E80000-memory.dmp