Analysis

  • max time kernel
    13s
  • max time network
    17s
  • platform
    windows11-21h2_x64
  • resource
    win11-20241007-en
  • resource tags

    arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    21-11-2024 10:51

General

  • Target

    Loader_dll/loaderV12.exe

  • Size

    62.3MB

  • MD5

    8e533e9d973e49f1251a5a5343650130

  • SHA1

    2c94ccaf726d034c426425e6b74755b941880566

  • SHA256

    6465765c30c964f99f3afadb81383993893cfcbb47d4740b368a11e5dc614f1e

  • SHA512

    a03ce278551642f8e615dbf617d6480794909f5648e108644f1db9c5a694a334c6b14ed3bc1b82da65e67e78d2d03f3871335d19116ad4624fdc1e0ca32a0d38

  • SSDEEP

    393216:W5HH6Cms5ku95LoagbWWToiadeqW5ZKwq/2Q3HAswsOjNnFRujVebELXD6uP9wjT:WhH6CmsXV1WpaAPZc2ugV2ebVuP+/

Score
10/10

Malware Config

Signatures

  • Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Executes dropped EXE 1 IoCs
  • Program crash 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • GoLang User-Agent 2 IoCs

    Uses default user-agent string defined by GoLang HTTP packages.

  • Modifies system certificate store 2 TTPs 3 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 44 IoCs
  • Suspicious use of WriteProcessMemory 16 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:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
      PID:2360
      • C:\Windows\SysWOW64\svchost.exe
        "C:\Windows\System32\svchost.exe"
        2⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:4300
    • C:\Users\Admin\AppData\Local\Temp\Loader_dll\loaderV12.exe
      "C:\Users\Admin\AppData\Local\Temp\Loader_dll\loaderV12.exe"
      1⤵
      • Modifies system certificate store
      • Suspicious use of WriteProcessMemory
      PID:3572
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        powershell -Command "Add-MpPreference -ExclusionPath \"C:\ProgramData\";" powershell -Command "Add-MpPreference -ExclusionPath \"C:\Users\Admin\AppData\Local\Temp\Loader_dll\loaderV12.exe\""
        2⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2232
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Command Add-MpPreference -ExclusionPath C:\Users\Admin\AppData\Local\Temp\Loader_dll\loaderV12.exe
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4988
      • C:\Windows\System32\Wbem\wmic.exe
        wmic csproduct get uuid
        2⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1184
      • C:\ProgramData\driver1.exe
        C:\ProgramData\driver1.exe
        2⤵
        • Suspicious use of NtCreateUserProcessOtherParentProcess
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:2996
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2996 -s 388
          3⤵
          • Program crash
          PID:2748
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2996 -s 384
          3⤵
          • Program crash
          PID:2860
      • C:\Windows\system32\schtasks.exe
        schtasks /create /tn WinDriver /tr C:\ProgramData\Microsoft\WinDriver.exe /sc onstart /ru SYSTEM
        2⤵
        • Scheduled Task/Job: Scheduled Task
        PID:4640
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 2996 -ip 2996
      1⤵
        PID:2548
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 2996 -ip 2996
        1⤵
          PID:2184

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\ProgramData\driver1.exe

          Filesize

          1.1MB

          MD5

          9cff7f2ffa235062a389eafa44385df5

          SHA1

          97f06a91915400aaf0f2e93352172395e9dc1c66

          SHA256

          1103d24428005f23b7c88bdaafc615d1b4ed4320f3554e096712c80dfc4048f8

          SHA512

          aa242d26d02ed4eefe317781ad0692a2e70269221b26042a6f9e47ae18e286dda5dac3959397f85ea4a40ba82206a553c4b5e82962393142e45ab235fffbeadc

        • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

          Filesize

          2KB

          MD5

          627073ee3ca9676911bee35548eff2b8

          SHA1

          4c4b68c65e2cab9864b51167d710aa29ebdcff2e

          SHA256

          85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

          SHA512

          3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

        • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

          Filesize

          944B

          MD5

          e3840d9bcedfe7017e49ee5d05bd1c46

          SHA1

          272620fb2605bd196df471d62db4b2d280a363c6

          SHA256

          3ac83e70415b9701ee71a4560232d7998e00c3db020fde669eb01b8821d2746f

          SHA512

          76adc88ab3930acc6b8b7668e2de797b8c00edcfc41660ee4485259c72a8adf162db62c2621ead5a9950f12bfe8a76ccab79d02fda11860afb0e217812cac376

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kbbsmibw.24c.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

        • memory/2232-26-0x00007FFF60990000-0x00007FFF61452000-memory.dmp

          Filesize

          10.8MB

        • memory/2232-12-0x00007FFF60990000-0x00007FFF61452000-memory.dmp

          Filesize

          10.8MB

        • memory/2232-11-0x000002E1E8CA0000-0x000002E1E8CC2000-memory.dmp

          Filesize

          136KB

        • memory/2232-2-0x00007FFF60990000-0x00007FFF61452000-memory.dmp

          Filesize

          10.8MB

        • memory/2232-0-0x00007FFF60993000-0x00007FFF60995000-memory.dmp

          Filesize

          8KB

        • memory/2232-1-0x00007FFF60990000-0x00007FFF61452000-memory.dmp

          Filesize

          10.8MB

        • memory/2996-42-0x0000000000F60000-0x0000000001360000-memory.dmp

          Filesize

          4.0MB

        • memory/2996-36-0x0000000000D90000-0x0000000000E11000-memory.dmp

          Filesize

          516KB

        • memory/2996-43-0x0000000000F60000-0x0000000001360000-memory.dmp

          Filesize

          4.0MB

        • memory/2996-44-0x00007FFF81900000-0x00007FFF81B09000-memory.dmp

          Filesize

          2.0MB

        • memory/2996-46-0x0000000076010000-0x0000000076262000-memory.dmp

          Filesize

          2.3MB

        • memory/4300-47-0x0000000000870000-0x000000000087A000-memory.dmp

          Filesize

          40KB

        • memory/4300-49-0x0000000001000000-0x0000000001400000-memory.dmp

          Filesize

          4.0MB

        • memory/4300-50-0x00007FFF81900000-0x00007FFF81B09000-memory.dmp

          Filesize

          2.0MB

        • memory/4300-52-0x0000000076010000-0x0000000076262000-memory.dmp

          Filesize

          2.3MB