Analysis

  • max time kernel
    133s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07-05-2024 00:38

General

  • Target

    b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.exe

  • Size

    581KB

  • MD5

    8ebd77032131fa4c9a524b48f241f6ce

  • SHA1

    0cc05beba021427f9a8b6d3b1395bf820355a820

  • SHA256

    b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d

  • SHA512

    a3655e41379df08f23a3242bec23464d261e562785d298b2372275c9040d137209ca9cb6a7e863a796aae02f502456e800a701d0d02de5fcae71c4399a7c832f

  • SSDEEP

    6144:TBMEPlABQ0OaqtszpR8V2hYHgORzw+A9PVsZWeDkDu+I2h7whAzO0KZfNrH/:T9Aq0OaqO/8VTXsNvkRNBXZfNL/

Malware Config

Extracted

Family

formbook

Version

3.9

Campaign

sk

Decoy

ordersakeonline.net

denisekeelebedford.com

vincentbibuld.com

theswordslinger.com

360sowo.com

birimtihanmevsimi.com

loatta.com

vcmwp.info

arthribon.com

penwortham.church

18666964931.com

publibcn.com

purplekisscouture.com

siquieroceremonias.com

4111zzzzz.com

mvpsportstherapy.info

3rdlegion.com

draguleatherworks.com

kp-sonia.com

mysciencegarden.education

Signatures

  • Formbook

    Formbook is a data stealing malware which is capable of stealing data.

  • Detects executables packed with Cassandra/CyaX 2 IoCs
  • Detects executables packed with ConfuserEx Custom; outside of GIT 1 IoCs
  • Formbook payload 1 IoCs
  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
  • Looks for VMWare Tools registry key 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 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.

  • Maps connected drives based on registry 3 TTPs 2 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.exe
    "C:\Users\Admin\AppData\Local\Temp\b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.exe"
    1⤵
    • Looks for VirtualBox Guest Additions in registry
    • Looks for VMWare Tools registry key
    • Checks BIOS information in registry
    • Checks computer location settings
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:552
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\IiTdunToFK" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF01D.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2712
    • C:\Users\Admin\AppData\Local\Temp\b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.exe
      "C:\Users\Admin\AppData\Local\Temp\b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.exe"
      2⤵
        PID:4992
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4992 -s 184
          3⤵
          • Program crash
          PID:3492
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4992 -ip 4992
      1⤵
        PID:4624

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\tmpF01D.tmp

        Filesize

        1KB

        MD5

        b6641dc5108adc81d3db7aae9b3c40b3

        SHA1

        1cea02170cd91f8503e3aecd9790484e701e6427

        SHA256

        8650820b765908d94d24b5824599b04ace28ad0ba0e70c85d0595c3a100ae71c

        SHA512

        5d13d7ee183c23cc44c20d6efdc70deb70c5c4229f1a66953cadd16a3bfdcb391d2d17fa2b9c873e35deb1ad7ee1f9a64f03e7a7bf7e58a87512a856f6b1bdb3

      • memory/552-6-0x00000000073D0000-0x000000000746C000-memory.dmp

        Filesize

        624KB

      • memory/552-8-0x0000000075130000-0x00000000758E0000-memory.dmp

        Filesize

        7.7MB

      • memory/552-3-0x00000000049D0000-0x0000000004A62000-memory.dmp

        Filesize

        584KB

      • memory/552-4-0x0000000004E20000-0x0000000004E64000-memory.dmp

        Filesize

        272KB

      • memory/552-5-0x0000000075130000-0x00000000758E0000-memory.dmp

        Filesize

        7.7MB

      • memory/552-0-0x000000007513E000-0x000000007513F000-memory.dmp

        Filesize

        4KB

      • memory/552-7-0x000000007513E000-0x000000007513F000-memory.dmp

        Filesize

        4KB

      • memory/552-2-0x0000000004920000-0x000000000492A000-memory.dmp

        Filesize

        40KB

      • memory/552-9-0x00000000076E0000-0x0000000007746000-memory.dmp

        Filesize

        408KB

      • memory/552-1-0x00000000000E0000-0x0000000000178000-memory.dmp

        Filesize

        608KB

      • memory/552-15-0x0000000007860000-0x000000000786A000-memory.dmp

        Filesize

        40KB

      • memory/552-16-0x00000000087E0000-0x0000000008D84000-memory.dmp

        Filesize

        5.6MB

      • memory/552-21-0x0000000075130000-0x00000000758E0000-memory.dmp

        Filesize

        7.7MB

      • memory/4992-18-0x0000000000710000-0x000000000073A000-memory.dmp

        Filesize

        168KB