Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240215-en
  • resource tags

    arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
  • submitted
    19-05-2024 11:19

General

  • Target

    759b9b44ab8b9852b1465a87b22bae6169012b304ea1920fb6c5553ff87116fc.exe

  • Size

    4.1MB

  • MD5

    fb2e39a18034b445e399231ee30e2975

  • SHA1

    049da88aa893e985cc5641c4c214189f0ab407f4

  • SHA256

    759b9b44ab8b9852b1465a87b22bae6169012b304ea1920fb6c5553ff87116fc

  • SHA512

    6b57c8b90187f1a3cc8ea0fde900420de8a574ee75160f25914d1bbf5dcd17e33a54bf73423d6309d5758f9c4d3c87cf76951f1fe7c66935684dba78be0a7c13

  • SSDEEP

    98304:1H+PiUxpnK5pcCD6RLXH4DRMjOnEmJ5mWZ44js55cU5wvI2g:1H+PiSfw6Rz4ejOEAZ44S5J5ww2g

Malware Config

Signatures

  • Glupteba

    Glupteba is a modular loader written in Golang with various components.

  • Glupteba payload 19 IoCs
  • Windows security bypass 2 TTPs 7 IoCs
  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 12 IoCs
  • Windows security modification 2 TTPs 7 IoCs
  • Adds Run key to start application 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 for VirtualBox DLLs, possible anti-VM trick 1 TTPs 1 IoCs

    Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.

  • Drops file in Windows directory 3 IoCs
  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Modifies data under HKEY_USERS 64 IoCs
  • Modifies system certificate store 2 TTPs 11 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 15 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.

Processes

  • C:\Users\Admin\AppData\Local\Temp\759b9b44ab8b9852b1465a87b22bae6169012b304ea1920fb6c5553ff87116fc.exe
    "C:\Users\Admin\AppData\Local\Temp\759b9b44ab8b9852b1465a87b22bae6169012b304ea1920fb6c5553ff87116fc.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:2908
    • C:\Users\Admin\AppData\Local\Temp\759b9b44ab8b9852b1465a87b22bae6169012b304ea1920fb6c5553ff87116fc.exe
      "C:\Users\Admin\AppData\Local\Temp\759b9b44ab8b9852b1465a87b22bae6169012b304ea1920fb6c5553ff87116fc.exe"
      2⤵
      • Windows security bypass
      • Loads dropped DLL
      • Windows security modification
      • Adds Run key to start application
      • Checks for VirtualBox DLLs, possible anti-VM trick
      • Drops file in Windows directory
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2796
      • C:\Windows\system32\cmd.exe
        C:\Windows\Sysnative\cmd.exe /C "netsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2284
        • C:\Windows\system32\netsh.exe
          netsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes
          4⤵
          • Modifies Windows Firewall
          • Modifies data under HKEY_USERS
          PID:2388
      • C:\Windows\rss\csrss.exe
        C:\Windows\rss\csrss.exe
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Modifies system certificate store
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2128
        • C:\Windows\system32\schtasks.exe
          schtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F
          4⤵
          • Creates scheduled task(s)
          PID:2748
        • C:\Windows\system32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:1340
          • C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe
            "C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe"
            4⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Modifies system certificate store
            PID:1588
          • C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe
            C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe taskmgr.exe C:\Users\Admin\AppData\Local\Temp\csrss\injector\NtQuerySystemInformationHook.dll
            4⤵
            • Executes dropped EXE
            • Suspicious behavior: EnumeratesProcesses
            PID:1368
    • C:\Windows\system32\makecab.exe
      "C:\Windows\system32\makecab.exe" C:\Windows\Logs\CBS\CbsPersist_20240519111945.log C:\Windows\Logs\CBS\CbsPersist_20240519111945.cab
      1⤵
      • Drops file in Windows directory
      PID:2800

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

      Filesize

      68KB

      MD5

      29f65ba8e88c063813cc50a4ea544e93

      SHA1

      05a7040d5c127e68c25d81cc51271ffb8bef3568

      SHA256

      1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

      SHA512

      e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

    • C:\Users\Admin\AppData\Local\Temp\Cab4720.tmp

      Filesize

      65KB

      MD5

      ac05d27423a85adc1622c714f2cb6184

      SHA1

      b0fe2b1abddb97837ea0195be70ab2ff14d43198

      SHA256

      c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

      SHA512

      6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

    • C:\Users\Admin\AppData\Local\Temp\Symbols\ntkrnlmp.pdb\AAF33CF37E194E98957768CF9C02DE8E2\download.error

      Filesize

      8.3MB

      MD5

      fd2727132edd0b59fa33733daa11d9ef

      SHA1

      63e36198d90c4c2b9b09dd6786b82aba5f03d29a

      SHA256

      3a72dbedc490773f90e241c8b3b839383a63ce36426a4f330a0f754b14b4d23e

      SHA512

      3e251be7d0e8db92d50092a4c4be3c74f42f3d564c72981f43a8e0fe06427513bfa0f67821a61a503a4f85741f0b150280389f8f4b4f01cdfd98edce5af29e6e

    • C:\Users\Admin\AppData\Local\Temp\Tar4840.tmp

      Filesize

      177KB

      MD5

      435a9ac180383f9fa094131b173a2f7b

      SHA1

      76944ea657a9db94f9a4bef38f88c46ed4166983

      SHA256

      67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34

      SHA512

      1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a

    • C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe

      Filesize

      281KB

      MD5

      d98e33b66343e7c96158444127a117f6

      SHA1

      bb716c5509a2bf345c6c1152f6e3e1452d39d50d

      SHA256

      5de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1

      SHA512

      705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5

    • C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe

      Filesize

      1.7MB

      MD5

      13aaafe14eb60d6a718230e82c671d57

      SHA1

      e039dd924d12f264521b8e689426fb7ca95a0a7b

      SHA256

      f44a7deb678ae7bbaaadf88e4c620d7cdf7e6831a1656c456545b1c06feb4ef3

      SHA512

      ade02218c0fd1ef9290c3113cf993dd89e87d4fb66fa1b34afdc73c84876123cd742d2a36d8daa95e2a573d2aa7e880f3c8ba0c5c91916ed15e7c4f6ff847de3

    • C:\Users\Admin\AppData\Local\Temp\ntkrnlmp.exe

      Filesize

      5.3MB

      MD5

      1afff8d5352aecef2ecd47ffa02d7f7d

      SHA1

      8b115b84efdb3a1b87f750d35822b2609e665bef

      SHA256

      c41acc53cde89b94d55d6932ddd55a212ba910e1fade3da138670bb5b18ae4e1

      SHA512

      e5dc54c60be702e11772dc729eec5ec7140f293545aa3d57282adacddf686483393b0c940bbd397a9d50a6cda093865b143ae00c51ce3bf5d6b00241f97b3cdb

    • C:\Users\Admin\AppData\Local\Temp\osloader.exe

      Filesize

      591KB

      MD5

      e2f68dc7fbd6e0bf031ca3809a739346

      SHA1

      9c35494898e65c8a62887f28e04c0359ab6f63f5

      SHA256

      b74cd24cef07f0226e7b777f7862943faee4cf288178b423d5344b0769dc15d4

      SHA512

      26256a12b5b8b3a40b34f18e081cdb45ea11845589c9d458a79385a4b8178f32164b417ddc9346fab8299bc6d4b9fedb620274c4edf9321424f37a2e2a6de579

    • C:\Windows\rss\csrss.exe

      Filesize

      4.1MB

      MD5

      fb2e39a18034b445e399231ee30e2975

      SHA1

      049da88aa893e985cc5641c4c214189f0ab407f4

      SHA256

      759b9b44ab8b9852b1465a87b22bae6169012b304ea1920fb6c5553ff87116fc

      SHA512

      6b57c8b90187f1a3cc8ea0fde900420de8a574ee75160f25914d1bbf5dcd17e33a54bf73423d6309d5758f9c4d3c87cf76951f1fe7c66935684dba78be0a7c13

    • \Users\Admin\AppData\Local\Temp\dbghelp.dll

      Filesize

      1.5MB

      MD5

      f0616fa8bc54ece07e3107057f74e4db

      SHA1

      b33995c4f9a004b7d806c4bb36040ee844781fca

      SHA256

      6e58fcf4d763022b1f79a3c448eb2ebd8ad1c15df3acf58416893f1cbc699026

      SHA512

      15242e3f5652d7f1d0e31cebadfe2f238ca3222f0e927eb7feb644ab2b3d33132cf2316ee5089324f20f72f1650ad5bb8dd82b96518386ce5b319fb5ceb8313c

    • \Users\Admin\AppData\Local\Temp\symsrv.dll

      Filesize

      163KB

      MD5

      5c399d34d8dc01741269ff1f1aca7554

      SHA1

      e0ceed500d3cef5558f3f55d33ba9c3a709e8f55

      SHA256

      e11e0f7804bfc485b19103a940be3d382f31c1378caca0c63076e27797d7553f

      SHA512

      8ff9d38b22d73c595cc417427b59f5ca8e1fb7b47a2fa6aef25322bf6e614d6b71339a752d779bd736b4c1057239100ac8cc62629fd5d6556785a69bcdc3d73d

    • memory/1588-32-0x0000000140000000-0x00000001405E8000-memory.dmp

      Filesize

      5.9MB

    • memory/1588-40-0x0000000140000000-0x00000001405E8000-memory.dmp

      Filesize

      5.9MB

    • memory/2128-18-0x0000000003BB0000-0x0000000003FA8000-memory.dmp

      Filesize

      4.0MB

    • memory/2128-122-0x0000000000400000-0x0000000002364000-memory.dmp

      Filesize

      31.4MB

    • memory/2128-137-0x0000000000400000-0x0000000002364000-memory.dmp

      Filesize

      31.4MB

    • memory/2128-136-0x0000000000400000-0x0000000002364000-memory.dmp

      Filesize

      31.4MB

    • memory/2128-135-0x0000000000400000-0x0000000002364000-memory.dmp

      Filesize

      31.4MB

    • memory/2128-124-0x0000000000400000-0x0000000002364000-memory.dmp

      Filesize

      31.4MB

    • memory/2128-123-0x0000000000400000-0x0000000002364000-memory.dmp

      Filesize

      31.4MB

    • memory/2128-118-0x0000000000400000-0x0000000002364000-memory.dmp

      Filesize

      31.4MB

    • memory/2128-97-0x0000000000400000-0x0000000002364000-memory.dmp

      Filesize

      31.4MB

    • memory/2128-112-0x0000000000400000-0x0000000002364000-memory.dmp

      Filesize

      31.4MB

    • memory/2128-113-0x0000000000400000-0x0000000002364000-memory.dmp

      Filesize

      31.4MB

    • memory/2128-114-0x0000000000400000-0x0000000002364000-memory.dmp

      Filesize

      31.4MB

    • memory/2128-115-0x0000000000400000-0x0000000002364000-memory.dmp

      Filesize

      31.4MB

    • memory/2128-116-0x0000000000400000-0x0000000002364000-memory.dmp

      Filesize

      31.4MB

    • memory/2128-117-0x0000000000400000-0x0000000002364000-memory.dmp

      Filesize

      31.4MB

    • memory/2796-19-0x0000000000400000-0x0000000002364000-memory.dmp

      Filesize

      31.4MB

    • memory/2796-5-0x0000000003CB0000-0x00000000040A8000-memory.dmp

      Filesize

      4.0MB

    • memory/2796-7-0x0000000000400000-0x0000000002364000-memory.dmp

      Filesize

      31.4MB

    • memory/2796-8-0x0000000000400000-0x0000000002364000-memory.dmp

      Filesize

      31.4MB

    • memory/2908-3-0x0000000000400000-0x0000000002364000-memory.dmp

      Filesize

      31.4MB

    • memory/2908-6-0x0000000000400000-0x0000000002364000-memory.dmp

      Filesize

      31.4MB

    • memory/2908-2-0x0000000000400000-0x0000000002364000-memory.dmp

      Filesize

      31.4MB

    • memory/2908-1-0x0000000000400000-0x0000000002364000-memory.dmp

      Filesize

      31.4MB

    • memory/2908-0-0x0000000003C40000-0x0000000004038000-memory.dmp

      Filesize

      4.0MB