Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/10/2023, 15:27

General

  • Target

    Invoice#23615B001.exe

  • Size

    642KB

  • MD5

    2673a176c9729737316a6e6d660f0f79

  • SHA1

    f3466f9e8e6d1c9e9d22e6fe9e2ee601d9c22788

  • SHA256

    02971b038e3224fb89a5aa824cd4388ab3108e86571312d127e32b6a59b1b3ec

  • SHA512

    9e6d7703c8993e27b86bc5d4549e224db18176034e6d4331ab483dc187c77c543084cef2468a368a1dd48b0d678dc8f509ababb185b97d7756c426948442e958

  • SSDEEP

    12288:KayccWwjCUqEupAtlUpQSkHBkiyrhKwAKNdI0U+VRslA7jbA:0CdEupkl4RmkvyeI0TR17j

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

sn26

Decoy

resenha10.bet

gulshan-rajput.com

xbus.tech

z813my.cfd

wlxzjlny.cfd

auntengotiempo.com

canada-reservation.com

thegiftcompany.shop

esthersilveirapropiedades.com

1wapws.top

ymjblnvo.cfd

termokimik.net

kushiro-artist-school.com

bmmboo.com

caceresconstructionservices.com

kentuckywalkabout.com

bringyourcart.com

miamiwinetour.com

bobcatsocial.site

thirdmind.network

Signatures

  • Formbook

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

  • Formbook payload 4 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 28 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:3152
    • C:\Users\Admin\AppData\Local\Temp\Invoice#23615B001.exe
      "C:\Users\Admin\AppData\Local\Temp\Invoice#23615B001.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:4752
      • C:\Users\Admin\AppData\Local\Temp\Invoice#23615B001.exe
        "{path}"
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of AdjustPrivilegeToken
        PID:2272
    • C:\Windows\SysWOW64\chkdsk.exe
      "C:\Windows\SysWOW64\chkdsk.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Enumerates system info in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2160
      • C:\Windows\SysWOW64\cmd.exe
        /c del "C:\Users\Admin\AppData\Local\Temp\Invoice#23615B001.exe"
        3⤵
          PID:5100

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • memory/2160-22-0x00000000008F0000-0x00000000008FA000-memory.dmp

            Filesize

            40KB

          • memory/2160-29-0x00000000012B0000-0x0000000001344000-memory.dmp

            Filesize

            592KB

          • memory/2160-26-0x0000000000C00000-0x0000000000C2F000-memory.dmp

            Filesize

            188KB

          • memory/2160-25-0x0000000001430000-0x000000000177A000-memory.dmp

            Filesize

            3.3MB

          • memory/2160-24-0x0000000000C00000-0x0000000000C2F000-memory.dmp

            Filesize

            188KB

          • memory/2160-23-0x00000000008F0000-0x00000000008FA000-memory.dmp

            Filesize

            40KB

          • memory/2272-14-0x0000000000400000-0x000000000042F000-memory.dmp

            Filesize

            188KB

          • memory/2272-17-0x00000000015D0000-0x000000000191A000-memory.dmp

            Filesize

            3.3MB

          • memory/2272-19-0x0000000000400000-0x000000000042F000-memory.dmp

            Filesize

            188KB

          • memory/2272-20-0x0000000001570000-0x0000000001585000-memory.dmp

            Filesize

            84KB

          • memory/3152-33-0x0000000008B10000-0x0000000008C72000-memory.dmp

            Filesize

            1.4MB

          • memory/3152-31-0x0000000008B10000-0x0000000008C72000-memory.dmp

            Filesize

            1.4MB

          • memory/3152-30-0x0000000008B10000-0x0000000008C72000-memory.dmp

            Filesize

            1.4MB

          • memory/3152-27-0x0000000007670000-0x0000000007766000-memory.dmp

            Filesize

            984KB

          • memory/3152-21-0x0000000007670000-0x0000000007766000-memory.dmp

            Filesize

            984KB

          • memory/4752-12-0x0000000000F10000-0x0000000000FAA000-memory.dmp

            Filesize

            616KB

          • memory/4752-4-0x00000000050A0000-0x0000000005132000-memory.dmp

            Filesize

            584KB

          • memory/4752-0-0x0000000074910000-0x00000000750C0000-memory.dmp

            Filesize

            7.7MB

          • memory/4752-13-0x0000000000FB0000-0x0000000000FF8000-memory.dmp

            Filesize

            288KB

          • memory/4752-7-0x00000000051A0000-0x00000000051F6000-memory.dmp

            Filesize

            344KB

          • memory/4752-6-0x0000000004FB0000-0x0000000004FBA000-memory.dmp

            Filesize

            40KB

          • memory/4752-5-0x0000000005200000-0x0000000005210000-memory.dmp

            Filesize

            64KB

          • memory/4752-16-0x0000000074910000-0x00000000750C0000-memory.dmp

            Filesize

            7.7MB

          • memory/4752-3-0x0000000005650000-0x0000000005BF4000-memory.dmp

            Filesize

            5.6MB

          • memory/4752-2-0x0000000005000000-0x000000000509C000-memory.dmp

            Filesize

            624KB

          • memory/4752-11-0x00000000083A0000-0x00000000083AC000-memory.dmp

            Filesize

            48KB

          • memory/4752-1-0x0000000000550000-0x00000000005F6000-memory.dmp

            Filesize

            664KB

          • memory/4752-10-0x0000000005200000-0x0000000005210000-memory.dmp

            Filesize

            64KB

          • memory/4752-9-0x0000000074910000-0x00000000750C0000-memory.dmp

            Filesize

            7.7MB

          • memory/4752-8-0x0000000005C00000-0x0000000005F54000-memory.dmp

            Filesize

            3.3MB