Analysis

  • max time kernel
    152s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15-01-2024 11:56

General

  • Target

    f053a903e0bbf05e985dea741187cfeb.exe

  • Size

    255KB

  • MD5

    f053a903e0bbf05e985dea741187cfeb

  • SHA1

    e3a46ce6cbadd862373747054221322dff05d7f5

  • SHA256

    d0cb3e1d35598d959dd03c288f0f55bc0e2368ca1172948a2bc4b7b1b848d11c

  • SHA512

    9be6ffb348f60f40c290bd54136c5affdfaf57ea201547a5875fd12da01c097c4b610b530b181e5d77e445e827731a61e254a80f5dd1c07911ab3d74bb1a3568

  • SSDEEP

    6144:dwLrDSWMZF53kVdVIZBrsv2WRTQs76BVs:mzI3ksBrs76

Malware Config

Extracted

Family

smokeloader

Botnet

t200

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\f053a903e0bbf05e985dea741187cfeb.exe
    "C:\Users\Admin\AppData\Local\Temp\f053a903e0bbf05e985dea741187cfeb.exe"
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    PID:4656
  • C:\Users\Admin\AppData\Local\Temp\6750.exe
    C:\Users\Admin\AppData\Local\Temp\6750.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:740
    • 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:1352
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1352 -s 1076
        3⤵
        • Program crash
        PID:4552
  • C:\Users\Admin\AppData\Local\Temp\75F7.exe
    C:\Users\Admin\AppData\Local\Temp\75F7.exe
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:4388
    • C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe
      "C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:4164
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1352 -ip 1352
    1⤵
      PID:4660

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\6750.exe

      Filesize

      360KB

      MD5

      80c413180b6bd0dd664adc4e0665b494

      SHA1

      e791e4a3391fc6b7bcb58399cd4fa3c52a06b940

      SHA256

      6d99cec56614b6b8a23dfa84a50c6bbfde535411c6366ac2bcc20c9f5af62880

      SHA512

      347f4ae6f308b37d055a6177478e45ab3838d7020abed70c7aa138d2c3771e709de204da8550aebdcaa6139d869dc7328cc7e645c4dd48d1066f9ad70225644a

    • C:\Users\Admin\AppData\Local\Temp\75F7.exe

      Filesize

      5.6MB

      MD5

      f7c6d870f0de20c40388b493d2b315d2

      SHA1

      1b25397776ae0481184f151ec3e608f3b65ac8e6

      SHA256

      4e07a3356bb6ffaa23224884b2ec5d79b6f956acc186475adac89867c0d623d9

      SHA512

      0619a22579ee70745034c547c53180d4319c3dc5db326dfecc275cd3b3025f354a3e6fac093a925611a5e0cca5ff9dbcfbfe246d376bb173829f332b670f5655

    • 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\nso81AF.tmp\System.dll

      Filesize

      12KB

      MD5

      dd87a973e01c5d9f8e0fcc81a0af7c7a

      SHA1

      c9206ced48d1e5bc648b1d0f54cccc18bf643a14

      SHA256

      7fb0f8d452fefaac789986b933df050f3d3e4feb8a8d9944ada995f572dcdca1

      SHA512

      4910b39b1a99622ac8b3c42f173bbe7035ac2f8d40c946468e7db7e2868a2da81ea94da453857f06f39957dd690c7f1ba498936a7aaa0039975e472376f92e8f

    • memory/740-29-0x0000000002820000-0x0000000002821000-memory.dmp

      Filesize

      4KB

    • memory/740-25-0x0000000002800000-0x0000000002801000-memory.dmp

      Filesize

      4KB

    • memory/740-32-0x00000000022A0000-0x0000000002306000-memory.dmp

      Filesize

      408KB

    • memory/740-16-0x0000000000010000-0x000000000006D000-memory.dmp

      Filesize

      372KB

    • memory/740-18-0x00000000022A0000-0x0000000002306000-memory.dmp

      Filesize

      408KB

    • memory/740-19-0x00000000009E0000-0x00000000009ED000-memory.dmp

      Filesize

      52KB

    • memory/740-20-0x0000000077C94000-0x0000000077C95000-memory.dmp

      Filesize

      4KB

    • memory/740-21-0x00000000022A0000-0x0000000002306000-memory.dmp

      Filesize

      408KB

    • memory/740-24-0x00000000022A0000-0x0000000002306000-memory.dmp

      Filesize

      408KB

    • memory/740-23-0x0000000002830000-0x000000000283C000-memory.dmp

      Filesize

      48KB

    • memory/1352-26-0x0000000000890000-0x0000000000CC4000-memory.dmp

      Filesize

      4.2MB

    • memory/1352-28-0x0000000000890000-0x0000000000CC4000-memory.dmp

      Filesize

      4.2MB

    • memory/1352-31-0x0000000000490000-0x0000000000554000-memory.dmp

      Filesize

      784KB

    • memory/1352-64-0x0000000000490000-0x0000000000554000-memory.dmp

      Filesize

      784KB

    • memory/1352-33-0x0000000000490000-0x0000000000554000-memory.dmp

      Filesize

      784KB

    • memory/1352-35-0x0000000000490000-0x0000000000554000-memory.dmp

      Filesize

      784KB

    • memory/1352-63-0x0000000000890000-0x0000000000CC3000-memory.dmp

      Filesize

      4.2MB

    • memory/1352-61-0x00000000041E0000-0x00000000041E2000-memory.dmp

      Filesize

      8KB

    • memory/3552-5-0x0000000002A70000-0x0000000002A86000-memory.dmp

      Filesize

      88KB

    • memory/4164-60-0x00000000731D0000-0x00000000738E7000-memory.dmp

      Filesize

      7.1MB

    • memory/4164-65-0x00000000731D0000-0x00000000738E7000-memory.dmp

      Filesize

      7.1MB

    • memory/4388-40-0x0000000000D60000-0x00000000012F6000-memory.dmp

      Filesize

      5.6MB

    • memory/4388-48-0x0000000000D60000-0x00000000012F6000-memory.dmp

      Filesize

      5.6MB

    • memory/4656-6-0x0000000000400000-0x0000000000862000-memory.dmp

      Filesize

      4.4MB

    • memory/4656-2-0x00000000009D0000-0x00000000009D9000-memory.dmp

      Filesize

      36KB

    • memory/4656-3-0x0000000000400000-0x0000000000862000-memory.dmp

      Filesize

      4.4MB

    • memory/4656-4-0x0000000000400000-0x0000000000862000-memory.dmp

      Filesize

      4.4MB

    • memory/4656-1-0x0000000000A40000-0x0000000000B40000-memory.dmp

      Filesize

      1024KB

    • memory/4656-8-0x00000000009D0000-0x00000000009D9000-memory.dmp

      Filesize

      36KB