Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-01-2024 23:08

General

  • Target

    toolspab4.exe

  • Size

    206KB

  • MD5

    5784cb0aeb2ac45ece0689e7eecfc399

  • SHA1

    2d08f92794072432692225d06768b1b2dd37e2d5

  • SHA256

    12eb79f7104c4b5f780f5fc86145924fb81f3bc043c782328ad69c660a287670

  • SHA512

    cc2d49ee58955a3edbc08002e91caf63f9610bb4b3d34101d6025f047cc734ad0d825685114d5ae894d1c250ebd6c3fe265d8fb2120110d559cf345606fdfce1

  • SSDEEP

    3072:qXNx5tV7E7ycJc5GD5LhwrXoD6hYNRQSpPtgLE5eYoAVN:K3fV7WCGdhCoUi9pWLiZP

Malware Config

Extracted

Family

smokeloader

Botnet

pub4

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 4 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 3 IoCs
  • NSIS installer 8 IoCs
  • Checks SCSI registry key(s) 3 TTPs 6 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 34 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\toolspab4.exe
    "C:\Users\Admin\AppData\Local\Temp\toolspab4.exe"
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    PID:4044
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4044 -s 476
      2⤵
      • Program crash
      PID:3896
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4044 -ip 4044
    1⤵
      PID:2036
    • C:\Users\Admin\AppData\Local\Temp\A8F2.exe
      C:\Users\Admin\AppData\Local\Temp\A8F2.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:4420
      • 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:548
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 548 -s 1140
          3⤵
          • Program crash
          PID:1544
    • C:\Users\Admin\AppData\Local\Temp\ACAC.exe
      C:\Users\Admin\AppData\Local\Temp\ACAC.exe
      1⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:2176
      • C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe
        "C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe"
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:4892
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 548 -ip 548
      1⤵
        PID:1468
      • C:\Users\Admin\AppData\Roaming\cgrwcst
        C:\Users\Admin\AppData\Roaming\cgrwcst
        1⤵
        • Executes dropped EXE
        • Checks SCSI registry key(s)
        • Suspicious behavior: MapViewOfSection
        PID:4952
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4952 -s 476
          2⤵
          • Program crash
          PID:4228
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 4952 -ip 4952
        1⤵
          PID:976

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\A8F2.exe

          Filesize

          360KB

          MD5

          80c413180b6bd0dd664adc4e0665b494

          SHA1

          e791e4a3391fc6b7bcb58399cd4fa3c52a06b940

          SHA256

          6d99cec56614b6b8a23dfa84a50c6bbfde535411c6366ac2bcc20c9f5af62880

          SHA512

          347f4ae6f308b37d055a6177478e45ab3838d7020abed70c7aa138d2c3771e709de204da8550aebdcaa6139d869dc7328cc7e645c4dd48d1066f9ad70225644a

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

          Filesize

          133KB

          MD5

          9cab0d52e82a0509214d25a9910060f7

          SHA1

          076a3605fabc1df1dcefd88b2664dae065d72efd

          SHA256

          b46c7a9ae98c192ee94298ec4b25c92f7756e4771eee65a9a52a9b458075509b

          SHA512

          08867427a7ccf04923520b5c1c58c299cae407b91d8eb03078662889072d7be608df6d69024d7a5ac6bcd35ccf7406dff1c73b4fc242b9dddf088843e70d6d66

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

          Filesize

          150KB

          MD5

          42861d527d36683cacc680f040874c41

          SHA1

          7b2a9980f6c4d60afdc70abac264dc262d65523c

          SHA256

          5a595e488bafa28b564b2702676824804a7f09dd577e3ac05f5674b3127eb12d

          SHA512

          721ac63931ccc93acb297b7e85cebbd861b64c46fd1826b44ae361f84cfbc1e4dd6cc824a530a0fff95d163b3f5ffcff13912c8d785dc7d943c18b258e916618

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

          Filesize

          192KB

          MD5

          fe26279d30946d954ceaa0747d208c82

          SHA1

          d3083e7da29722457fcb2c8877f0abf02a17ea60

          SHA256

          588466502ab995da882eedfffd48e0e50e123acc2369a89287ddaaea22d49e30

          SHA512

          c59eb8bb6c66bae0656fd749d13abf03a294dfdeced0788dd03414e68aeb9c23071aa7d0fc13f711abfd0538354cce18070d7e700d6b778577bde809543eae7f

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

          Filesize

          97KB

          MD5

          c3f83b2d1178869e4963a0dd867b0daf

          SHA1

          cab1e0fd51872623cd1526e4a70af2b32fbaf1cc

          SHA256

          3014d5f0f6c192493b19e583553c3f0e2abb2e0363ba2a010b931172f5ebae1d

          SHA512

          7ad5409b7124c570483e590165b1ac59d29cae0c3435ae7facbd872c731a01451120dfe2d9c90e8fdcb63ebfbf659ca06025e3d303065bbdc2d7199883c409fd

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

          Filesize

          137KB

          MD5

          c2b368b7f276a1960cc2dfcdb7684301

          SHA1

          2663466a4aa719aa4790f9ca3829b7f3ece61910

          SHA256

          e0baa9603853d9c5ee302820587a0fe1cdd93c2b0cdd26e307a7677779dbb97f

          SHA512

          637039917c1c346ba317625c452e68b32ee83726c1d7b9eef0f5c8dc23a0b695ae5f10e7a3cbbfd8cd599ec001ba9667d0e06ebf85630a79988c87abe8600652

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

          Filesize

          115KB

          MD5

          8d72a822da8132d45fdf819f883bfdd7

          SHA1

          979432bf86848b45721cd6450bf0c1fd5a8aa68b

          SHA256

          f6d7e95be72a2241fa122b8c9dc1165065be9dfdfcee0df718a762f168754e7a

          SHA512

          daa232d578420fd838641761e50d2639bbf6df43ef303031e1c82e326e6b987dc17d81e261490689aa7eeff69348f7782fe7f3cad642e033731ffd3b94be14b6

        • C:\Users\Admin\AppData\Local\Temp\nsgAE33.tmp\System.dll

          Filesize

          12KB

          MD5

          dd87a973e01c5d9f8e0fcc81a0af7c7a

          SHA1

          c9206ced48d1e5bc648b1d0f54cccc18bf643a14

          SHA256

          7fb0f8d452fefaac789986b933df050f3d3e4feb8a8d9944ada995f572dcdca1

          SHA512

          4910b39b1a99622ac8b3c42f173bbe7035ac2f8d40c946468e7db7e2868a2da81ea94da453857f06f39957dd690c7f1ba498936a7aaa0039975e472376f92e8f

        • C:\Users\Admin\AppData\Roaming\cgrwcst

          Filesize

          206KB

          MD5

          5784cb0aeb2ac45ece0689e7eecfc399

          SHA1

          2d08f92794072432692225d06768b1b2dd37e2d5

          SHA256

          12eb79f7104c4b5f780f5fc86145924fb81f3bc043c782328ad69c660a287670

          SHA512

          cc2d49ee58955a3edbc08002e91caf63f9610bb4b3d34101d6025f047cc734ad0d825685114d5ae894d1c250ebd6c3fe265d8fb2120110d559cf345606fdfce1

        • memory/548-49-0x0000000003230000-0x0000000003231000-memory.dmp

          Filesize

          4KB

        • memory/548-59-0x0000000004A90000-0x0000000004A92000-memory.dmp

          Filesize

          8KB

        • memory/548-62-0x0000000001200000-0x00000000012C4000-memory.dmp

          Filesize

          784KB

        • memory/548-61-0x0000000000A40000-0x0000000000E73000-memory.dmp

          Filesize

          4.2MB

        • memory/548-28-0x0000000001200000-0x00000000012C4000-memory.dmp

          Filesize

          784KB

        • memory/548-30-0x0000000001200000-0x00000000012C4000-memory.dmp

          Filesize

          784KB

        • memory/548-25-0x0000000000A40000-0x0000000000E74000-memory.dmp

          Filesize

          4.2MB

        • memory/548-27-0x0000000000A40000-0x0000000000E74000-memory.dmp

          Filesize

          4.2MB

        • memory/548-32-0x0000000001200000-0x00000000012C4000-memory.dmp

          Filesize

          784KB

        • memory/2176-46-0x0000000000540000-0x0000000000AD6000-memory.dmp

          Filesize

          5.6MB

        • memory/2176-36-0x0000000000540000-0x0000000000AD6000-memory.dmp

          Filesize

          5.6MB

        • memory/3536-68-0x0000000002E50000-0x0000000002E66000-memory.dmp

          Filesize

          88KB

        • memory/3536-4-0x0000000002FE0000-0x0000000002FF6000-memory.dmp

          Filesize

          88KB

        • memory/4044-2-0x00000000006E0000-0x00000000006E9000-memory.dmp

          Filesize

          36KB

        • memory/4044-3-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/4044-1-0x0000000000720000-0x0000000000820000-memory.dmp

          Filesize

          1024KB

        • memory/4044-7-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/4420-23-0x0000000002280000-0x00000000022E6000-memory.dmp

          Filesize

          408KB

        • memory/4420-21-0x0000000002800000-0x0000000002801000-memory.dmp

          Filesize

          4KB

        • memory/4420-19-0x0000000002640000-0x000000000264D000-memory.dmp

          Filesize

          52KB

        • memory/4420-43-0x0000000002280000-0x00000000022E6000-memory.dmp

          Filesize

          408KB

        • memory/4420-14-0x0000000000010000-0x000000000006D000-memory.dmp

          Filesize

          372KB

        • memory/4420-22-0x0000000002830000-0x000000000283C000-memory.dmp

          Filesize

          48KB

        • memory/4420-17-0x0000000002280000-0x00000000022E6000-memory.dmp

          Filesize

          408KB

        • memory/4420-16-0x0000000002280000-0x00000000022E6000-memory.dmp

          Filesize

          408KB

        • memory/4420-20-0x0000000077544000-0x0000000077545000-memory.dmp

          Filesize

          4KB

        • memory/4420-24-0x0000000002280000-0x00000000022E6000-memory.dmp

          Filesize

          408KB

        • memory/4952-71-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/4952-67-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/4952-66-0x0000000000630000-0x0000000000730000-memory.dmp

          Filesize

          1024KB