Analysis

  • max time kernel
    302s
  • max time network
    243s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-es
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-eslocale:es-esos:windows10-2004-x64systemwindows
  • submitted
    14-01-2024 19:41

General

  • Target

    toolspub2.exe

  • Size

    203KB

  • MD5

    d9077796101f063d05d1b18ef03639d8

  • SHA1

    035d12383b9bcdbba8393fa643a375a19cbab559

  • SHA256

    17d15c3e994b704c8b11393ee9e83dc7ecc3cdfd981820501beaf98c6e34cc94

  • SHA512

    c79350993ced4a8e18b071e866a69b664143e35c5f6704afe4ff5f70437522d90722b29f0fd9bf6c66ddd331c5ebc65378915a3de062fd26ae213fbb252ac2ad

  • SSDEEP

    3072:pfUB/bLaZdXUNc8iirJiM21K7uLX6Qn+62oM42fL4iBNkRDxs+cmH:pfUVclVrXpbGEx7co

Malware Config

Extracted

Family

smokeloader

Botnet

up3

Extracted

Family

smokeloader

Version

2020

C2

http://host-file-host6.com/

http://host-host-file8.com/

rc4.i32
rc4.i32

Signatures

  • BetaBot

    Beta Bot is a Trojan that infects computers and disables Antivirus.

  • Modifies firewall policy service 2 TTPs 4 IoCs
  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Sets file execution options in registry 2 TTPs 4 IoCs
  • Checks BIOS information in registry 2 TTPs 1 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 8 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Program crash 1 IoCs
  • NSIS installer 4 IoCs
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Checks processor information in registry 2 TTPs 4 IoCs

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

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Modifies Internet Explorer Protected Mode 1 TTPs 4 IoCs
  • Modifies Internet Explorer Protected Mode Banner 1 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 32 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 12 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\toolspub2.exe
    "C:\Users\Admin\AppData\Local\Temp\toolspub2.exe"
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    PID:2160
  • C:\Users\Admin\AppData\Local\Temp\AF36.exe
    C:\Users\Admin\AppData\Local\Temp\AF36.exe
    1⤵
    • Sets file execution options in registry
    • Executes dropped EXE
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Checks processor information in registry
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2336
    • C:\Windows\SysWOW64\explorer.exe
      C:\Windows\SysWOW64\explorer.exe
      2⤵
      • Modifies firewall policy service
      • Sets file execution options in registry
      • Checks BIOS information in registry
      • Adds Run key to start application
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Checks processor information in registry
      • Enumerates system info in registry
      • Modifies Internet Explorer Protected Mode
      • Modifies Internet Explorer Protected Mode Banner
      • Modifies Internet Explorer settings
      • Suspicious use of AdjustPrivilegeToken
      PID:264
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 264 -s 1128
        3⤵
        • Program crash
        PID:2384
  • C:\Users\Admin\AppData\Local\Temp\BA24.exe
    C:\Users\Admin\AppData\Local\Temp\BA24.exe
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:1908
    • C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe
      "C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:2452
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 264 -ip 264
    1⤵
      PID:3924

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\AF36.exe

      Filesize

      360KB

      MD5

      80c413180b6bd0dd664adc4e0665b494

      SHA1

      e791e4a3391fc6b7bcb58399cd4fa3c52a06b940

      SHA256

      6d99cec56614b6b8a23dfa84a50c6bbfde535411c6366ac2bcc20c9f5af62880

      SHA512

      347f4ae6f308b37d055a6177478e45ab3838d7020abed70c7aa138d2c3771e709de204da8550aebdcaa6139d869dc7328cc7e645c4dd48d1066f9ad70225644a

    • C:\Users\Admin\AppData\Local\Temp\BA24.exe

      Filesize

      3.1MB

      MD5

      c892fd85a6c67dc89a1bf42778c8c4d1

      SHA1

      8402bcf6cdedcd9826f07b9d66b7e3fcd217a525

      SHA256

      b824f593362de8a9535dab64d0ef1002b084ba1d0633ea439c4b108ef29a2383

      SHA512

      1abe8f63363b8d4c6bd7e646224f3b658c6db5bdb99430075f80dce3143a8a12d1afbd54184d9cf363b329d8a26186b512750387e5da0b1235d68c634ca8f4ab

    • C:\Users\Admin\AppData\Local\Temp\BA24.exe

      Filesize

      2.8MB

      MD5

      e08de7e7e8d2fac718c83b97e650982a

      SHA1

      9f0d7b5c2ab4c635ff1a7663f38732c7e70dc682

      SHA256

      f4ab43fa98dddeecdeb4c908806df4a3dd0fa646508f82f2f4a8dd15e5ff150d

      SHA512

      90b596770d31f4414bacb33dcc86e7d8ad63947a42605f22c540094686740858b1a02616862f777a4e9ae7f64c0863083050c01cf8501045c58c26ed4d8fb612

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

      Filesize

      2.2MB

      MD5

      0badb0e573d95db49ac23c11163d9386

      SHA1

      d86dd20e4498ba5576272df07cd71dd9ed40bf8d

      SHA256

      5ebb608342d1306743d1ab56bb587b00d7e14737f5af48be3fa738a98cf29668

      SHA512

      a83d397fdcf2b749aac8f1db38a991b06a70c58d21c84d09cd8a732ee744287e7d7d58edeb817006b6ee245ed313993a3280aea32fd4c5a079b4f960ab35eff8

    • C:\Users\Admin\AppData\Local\Temp\lib.dll

      Filesize

      2.2MB

      MD5

      bc94fe5f3a7d234dceefa5a25c109358

      SHA1

      eefd19123cb554bd975d9848eff08f195c7794bb

      SHA256

      fdbd693e2a9eab791967e78eef8e1a3423c63b570d6fc8ccd9367be931c779c4

      SHA512

      650632899edc1bce009244cf228500c26df33c2036f774f60529c10bf7b277a49d3e635846097cf2d821a54e066a07f5f6ef2be055e1054e8c4a1a938fad9c69

    • C:\Users\Admin\AppData\Local\Temp\nswC89B.tmp\System.dll

      Filesize

      12KB

      MD5

      dd87a973e01c5d9f8e0fcc81a0af7c7a

      SHA1

      c9206ced48d1e5bc648b1d0f54cccc18bf643a14

      SHA256

      7fb0f8d452fefaac789986b933df050f3d3e4feb8a8d9944ada995f572dcdca1

      SHA512

      4910b39b1a99622ac8b3c42f173bbe7035ac2f8d40c946468e7db7e2868a2da81ea94da453857f06f39957dd690c7f1ba498936a7aaa0039975e472376f92e8f

    • memory/264-41-0x0000000000E50000-0x0000000000F14000-memory.dmp

      Filesize

      784KB

    • memory/264-62-0x00000000002B0000-0x00000000006E3000-memory.dmp

      Filesize

      4.2MB

    • memory/264-63-0x0000000002D70000-0x0000000002D72000-memory.dmp

      Filesize

      8KB

    • memory/264-42-0x0000000000E50000-0x0000000000F14000-memory.dmp

      Filesize

      784KB

    • memory/264-39-0x0000000000E50000-0x0000000000F14000-memory.dmp

      Filesize

      784KB

    • memory/264-38-0x00000000012E0000-0x00000000012ED000-memory.dmp

      Filesize

      52KB

    • memory/264-37-0x0000000000E50000-0x0000000000F14000-memory.dmp

      Filesize

      784KB

    • memory/264-32-0x00000000002B0000-0x00000000006E4000-memory.dmp

      Filesize

      4.2MB

    • memory/264-66-0x0000000000E50000-0x0000000000F14000-memory.dmp

      Filesize

      784KB

    • memory/264-25-0x00000000002B0000-0x00000000006E4000-memory.dmp

      Filesize

      4.2MB

    • memory/1908-31-0x0000000000210000-0x00000000007A6000-memory.dmp

      Filesize

      5.6MB

    • memory/1908-49-0x0000000000210000-0x00000000007A6000-memory.dmp

      Filesize

      5.6MB

    • memory/2160-1-0x00000000007A0000-0x00000000008A0000-memory.dmp

      Filesize

      1024KB

    • memory/2160-2-0x00000000006E0000-0x00000000006E9000-memory.dmp

      Filesize

      36KB

    • memory/2160-3-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/2160-5-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/2160-8-0x00000000006E0000-0x00000000006E9000-memory.dmp

      Filesize

      36KB

    • memory/2336-36-0x0000000002290000-0x00000000022F6000-memory.dmp

      Filesize

      408KB

    • memory/2336-20-0x0000000002290000-0x00000000022F6000-memory.dmp

      Filesize

      408KB

    • memory/2336-18-0x0000000002640000-0x000000000264D000-memory.dmp

      Filesize

      52KB

    • memory/2336-17-0x0000000002290000-0x00000000022F6000-memory.dmp

      Filesize

      408KB

    • memory/2336-15-0x0000000000010000-0x000000000006D000-memory.dmp

      Filesize

      372KB

    • memory/2336-22-0x0000000002830000-0x000000000283C000-memory.dmp

      Filesize

      48KB

    • memory/2336-23-0x0000000002800000-0x0000000002801000-memory.dmp

      Filesize

      4KB

    • memory/2336-19-0x00000000777F4000-0x00000000777F5000-memory.dmp

      Filesize

      4KB

    • memory/2336-24-0x0000000002290000-0x00000000022F6000-memory.dmp

      Filesize

      408KB

    • memory/2336-34-0x0000000002820000-0x0000000002821000-memory.dmp

      Filesize

      4KB

    • memory/2452-61-0x0000000072FF0000-0x0000000073707000-memory.dmp

      Filesize

      7.1MB

    • memory/2452-67-0x0000000072FF0000-0x0000000073707000-memory.dmp

      Filesize

      7.1MB

    • memory/3424-4-0x0000000002EC0000-0x0000000002ED6000-memory.dmp

      Filesize

      88KB