Resubmissions

02/03/2024, 22:38

240302-2kwptaae3710

02/03/2024, 22:34

240302-2g86qsad9610

Analysis

  • max time kernel
    150s
  • max time network
    134s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    02/03/2024, 22:34

General

  • Target
    Fake AV/Antivirus2010.exe
  • Size 775KB
  • Sample240302-2g86qsad96
  • SHA256 1501affdcf557a9dcb73ae34d43365d5301532a48328564160fdc1f3acb01e2e
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Modifies security service 2 TTPs 3 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 30 IoCs
  • Suspicious use of SetThreadContext 23 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 32 IoCs
  • Modifies data under HKEY_USERS 30 IoCs
  • Modifies registry class 6 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious behavior: MapViewOfSection 31 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 7 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 NetworkService
    1⤵
      PID:272
    • 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:2124
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Deletes itself
        PID:1724
      • \??\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:3012
        • 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:2520
          • 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:2668
            • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
              "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2668 CREDAT:275457 /prefetch:2
              5⤵
              • Modifies Internet Explorer settings
              • Suspicious use of SetWindowsHookEx
              PID:2792
    • C:\Windows\system32\wbem\WMIADAP.EXE
      wmiadap.exe /F /T /R
      1⤵
        PID:636
      • C:\Windows\system32\wbem\wmiprvse.exe
        C:\Windows\system32\wbem\wmiprvse.exe -Embedding
        1⤵
          PID:1900
        • C:\Windows\system32\DllHost.exe
          C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
          1⤵
            PID:2736
          • C:\Windows\system32\DllHost.exe
            C:\Windows\system32\DllHost.exe /Processid:{F9717507-6651-4EDB-BFF7-AE615179BCCF}
            1⤵
              PID:848

            Network

                  MITRE ATT&CK Enterprise v15

                  Replay Monitor

                  Loading Replay Monitor...

                  Downloads

                  94308059B57B3142E455B38A6EB92015

                  • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
                  • Size 344B
                  • SHA256 b3443acda6dc4679b02eb78011a6abdc9b430be0af87ee16dceeb3caf29f9791
                  • MD5 SHA1 SHA512

                  94308059B57B3142E455B38A6EB92015

                  • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
                  • Size 344B
                  • SHA256 59df0721e4d7a01968a277611b7c87b9f90de375ed49e292b4f4e52d5a8b1c9a
                  • MD5 SHA1 SHA512

                  94308059B57B3142E455B38A6EB92015

                  • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
                  • Size 344B
                  • SHA256 77faa62106444cd9b4ab805fa8090ee361d96fe76ac37cdd6f82da2c089e83e5
                  • MD5 SHA1 SHA512

                  94308059B57B3142E455B38A6EB92015

                  • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
                  • Size 344B
                  • SHA256 6b61aafb816689db87e5623d5f125db9784b40cb65c3b390f99ab39562dd7cec
                  • MD5 SHA1 SHA512

                  94308059B57B3142E455B38A6EB92015

                  • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
                  • Size 344B
                  • SHA256 d8ab6a245af1599728c4c753bc8031e478dfce26e5f0c6738503e994d2243867
                  • MD5 SHA1 SHA512

                  94308059B57B3142E455B38A6EB92015

                  • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
                  • Size 344B
                  • SHA256 6e4e6863335ddcf5978e01482cd0798f325c43c2fa9cf09e5b6e2415004857da
                  • MD5 SHA1 SHA512

                  94308059B57B3142E455B38A6EB92015

                  • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
                  • Size 344B
                  • SHA256 63f7c6561009827c552948ed158caa23ad70e3c4047f59b3575272638c97723b
                  • MD5 SHA1 SHA512

                  94308059B57B3142E455B38A6EB92015

                  • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
                  • Size 344B
                  • SHA256 4c203b1bd151eb4a9ba6b74877f304fa5b2ba7a8d0b86bad8fb32cf950a22b08
                  • MD5 SHA1 SHA512

                  94308059B57B3142E455B38A6EB92015

                  • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
                  • Size 344B
                  • SHA256 41abd4255977c86e552cf7f66e100fe2c52c7694d5c69527090138f147d79fb0
                  • MD5 SHA1 SHA512

                  CabB696.tmp

                  • Path C:\Users\Admin\AppData\Local\Temp\CabB696.tmp
                  • Size 65KB
                  • SHA256 c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d
                  • MD5 SHA1 SHA512 SSDEEP

                  CabB7B0.tmp

                  • Path C:\Users\Admin\AppData\Local\Temp\CabB7B0.tmp
                  • Size 67KB
                  • SHA256 b42dc237e44cbc9a43400e7d3f9cbd406dbdefd62bfe87328f8663897d69df78
                  • MD5 SHA1 SHA512 SSDEEP

                  TarB7D5.tmp

                  • Path C:\Users\Admin\AppData\Local\Temp\TarB7D5.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 2d17533cf49cc30e382b259be3cfd2ed2a65d7d8919705fcde6eda818cb7caf0
                  • 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/272-42-0x0000000000060000-0x0000000000077000-memory.dmp

                  memory/272-33-0x0000000000F50000-0x0000000000F56000-memory.dmp

                  memory/272-41-0x0000000000F50000-0x0000000000F56000-memory.dmp

                  memory/272-37-0x0000000000F50000-0x0000000000F56000-memory.dmp

                  memory/272-32-0x0000000000F30000-0x0000000000F33000-memory.dmp

                  memory/272-123-0x0000000000060000-0x0000000000077000-memory.dmp

                  memory/2124-1-0x0000000000400000-0x00000000004C4400-memory.dmp

                  memory/2124-9-0x0000000000400000-0x00000000004C4400-memory.dmp

                  memory/2124-2-0x0000000000630000-0x0000000000830000-memory.dmp

                  memory/2520-25-0x00000000000A0000-0x00000000000BA000-memory.dmp

                  memory/2520-280-0x00000000000A0000-0x00000000000BA000-memory.dmp

                  memory/2520-63-0x00000000000A0000-0x00000000000BA000-memory.dmp

                  memory/2520-55-0x000007FFFFF80000-0x000007FFFFF90000-memory.dmp

                  memory/2520-30-0x00000000000A0000-0x00000000000BA000-memory.dmp

                  memory/2520-15-0x0000000000060000-0x0000000000077000-memory.dmp

                  memory/2520-20-0x00000000000A0000-0x00000000000BA000-memory.dmp

                  memory/2520-14-0x00000000000A0000-0x00000000000BA000-memory.dmp