Analysis

  • max time kernel
    152s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-01-2024 05:56

General

  • Target

    f5fb47c4fe365a3478323507e9f8dd7e.exe

  • Size

    234KB

  • MD5

    f5fb47c4fe365a3478323507e9f8dd7e

  • SHA1

    8ef08c96a8ee01629cb531315f144b9abada8c2d

  • SHA256

    4677c4aba91d3ad1687bae284e80deae2ebe9dd4a23e5bc071fab312f02baa8f

  • SHA512

    ba3ebca465122a46ce5db8a6fd83a68e04efda1dbf1a786f4e915992aeed2e6fc45b73c234ef07f2b4727bb440b26bf2617d7af28ced602cd2e2b537c2e51bcd

  • SSDEEP

    3072:ORSupGanOMAuJi4k1KjHPpxGDo0ixVijrPz5Bafw3ER/I:OR3RAIx70MijrVBQI

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 3 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 30 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\f5fb47c4fe365a3478323507e9f8dd7e.exe
    "C:\Users\Admin\AppData\Local\Temp\f5fb47c4fe365a3478323507e9f8dd7e.exe"
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    PID:4292
  • C:\Users\Admin\AppData\Local\Temp\F6DE.exe
    C:\Users\Admin\AppData\Local\Temp\F6DE.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:2912
    • 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:1464
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1464 -s 1088
        3⤵
        • Program crash
        PID:3468
  • C:\Users\Admin\AppData\Local\Temp\111.exe
    C:\Users\Admin\AppData\Local\Temp\111.exe
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:4764
    • C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe
      "C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:996
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 1464 -ip 1464
    1⤵
      PID:2772

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\111.exe

      Filesize

      5.6MB

      MD5

      f7c6d870f0de20c40388b493d2b315d2

      SHA1

      1b25397776ae0481184f151ec3e608f3b65ac8e6

      SHA256

      4e07a3356bb6ffaa23224884b2ec5d79b6f956acc186475adac89867c0d623d9

      SHA512

      0619a22579ee70745034c547c53180d4319c3dc5db326dfecc275cd3b3025f354a3e6fac093a925611a5e0cca5ff9dbcfbfe246d376bb173829f332b670f5655

    • C:\Users\Admin\AppData\Local\Temp\F6DE.exe

      Filesize

      360KB

      MD5

      80c413180b6bd0dd664adc4e0665b494

      SHA1

      e791e4a3391fc6b7bcb58399cd4fa3c52a06b940

      SHA256

      6d99cec56614b6b8a23dfa84a50c6bbfde535411c6366ac2bcc20c9f5af62880

      SHA512

      347f4ae6f308b37d055a6177478e45ab3838d7020abed70c7aa138d2c3771e709de204da8550aebdcaa6139d869dc7328cc7e645c4dd48d1066f9ad70225644a

    • 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\nsm2E3B.tmp\System.dll

      Filesize

      12KB

      MD5

      dd87a973e01c5d9f8e0fcc81a0af7c7a

      SHA1

      c9206ced48d1e5bc648b1d0f54cccc18bf643a14

      SHA256

      7fb0f8d452fefaac789986b933df050f3d3e4feb8a8d9944ada995f572dcdca1

      SHA512

      4910b39b1a99622ac8b3c42f173bbe7035ac2f8d40c946468e7db7e2868a2da81ea94da453857f06f39957dd690c7f1ba498936a7aaa0039975e472376f92e8f

    • memory/996-68-0x0000000072C60000-0x0000000073377000-memory.dmp

      Filesize

      7.1MB

    • memory/996-62-0x0000000072C60000-0x0000000073377000-memory.dmp

      Filesize

      7.1MB

    • memory/1464-32-0x0000000000C40000-0x0000000001074000-memory.dmp

      Filesize

      4.2MB

    • memory/1464-47-0x0000000001080000-0x0000000001144000-memory.dmp

      Filesize

      784KB

    • memory/1464-67-0x0000000001080000-0x0000000001144000-memory.dmp

      Filesize

      784KB

    • memory/1464-64-0x0000000004940000-0x0000000004942000-memory.dmp

      Filesize

      8KB

    • memory/1464-43-0x00000000014C0000-0x00000000014CD000-memory.dmp

      Filesize

      52KB

    • memory/1464-44-0x0000000001080000-0x0000000001144000-memory.dmp

      Filesize

      784KB

    • memory/1464-42-0x0000000001080000-0x0000000001144000-memory.dmp

      Filesize

      784KB

    • memory/1464-38-0x0000000000C40000-0x0000000001074000-memory.dmp

      Filesize

      4.2MB

    • memory/1464-63-0x0000000000C40000-0x0000000001073000-memory.dmp

      Filesize

      4.2MB

    • memory/2912-30-0x0000000002830000-0x000000000283C000-memory.dmp

      Filesize

      48KB

    • memory/2912-31-0x00000000022A0000-0x0000000002306000-memory.dmp

      Filesize

      408KB

    • memory/2912-29-0x0000000002800000-0x0000000002801000-memory.dmp

      Filesize

      4KB

    • memory/2912-35-0x0000000002820000-0x0000000002821000-memory.dmp

      Filesize

      4KB

    • memory/2912-37-0x00000000022A0000-0x0000000002306000-memory.dmp

      Filesize

      408KB

    • memory/2912-27-0x00000000022A0000-0x0000000002306000-memory.dmp

      Filesize

      408KB

    • memory/2912-16-0x0000000000010000-0x000000000006D000-memory.dmp

      Filesize

      372KB

    • memory/2912-26-0x0000000077614000-0x0000000077615000-memory.dmp

      Filesize

      4KB

    • memory/2912-25-0x0000000000730000-0x000000000073D000-memory.dmp

      Filesize

      52KB

    • memory/2912-24-0x00000000022A0000-0x0000000002306000-memory.dmp

      Filesize

      408KB

    • memory/3480-5-0x00000000014F0000-0x0000000001506000-memory.dmp

      Filesize

      88KB

    • memory/4292-6-0x0000000000400000-0x000000000043F000-memory.dmp

      Filesize

      252KB

    • memory/4292-4-0x0000000000400000-0x000000000043F000-memory.dmp

      Filesize

      252KB

    • memory/4292-3-0x0000000000400000-0x000000000043F000-memory.dmp

      Filesize

      252KB

    • memory/4292-1-0x0000000000770000-0x0000000000870000-memory.dmp

      Filesize

      1024KB

    • memory/4292-9-0x0000000000590000-0x0000000000599000-memory.dmp

      Filesize

      36KB

    • memory/4292-2-0x0000000000590000-0x0000000000599000-memory.dmp

      Filesize

      36KB

    • memory/4764-46-0x00000000007A0000-0x0000000000D36000-memory.dmp

      Filesize

      5.6MB

    • memory/4764-50-0x00000000007A0000-0x0000000000D36000-memory.dmp

      Filesize

      5.6MB

    • memory/4764-22-0x00000000007A0000-0x0000000000D36000-memory.dmp

      Filesize

      5.6MB