Analysis

  • max time kernel
    149s
  • max time network
    133s
  • platform
    windows7_x64
  • resource
    win7-en-20211014
  • submitted
    21-10-2021 13:32

General

  • Target

    Factura de proforma.exe

  • Size

    973KB

  • MD5

    3b28cc0c40a9122c19279e34ede6b2a6

  • SHA1

    2c97655615b623605be40e708295e12499674640

  • SHA256

    c4b4ddf8aec0347fd4640a12009f51ba60ed1b202e18b421a3faef74bfe18ea1

  • SHA512

    95fc3c78c572285fa8b13993dab2cf25e5c2efbe6aa40930c7745d5b3f3bdecb14a51f6a3f78ac66ec5307b7a97d4843615f78639b5d815f16b4b31e086e3d08

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

bc3s

C2

http://www.topei-products.com/bc3s/

Decoy

anna-ng.com

mariangelamata.com

szqnbl.com

nesherguitars.com

mysekrit.com

againbeautyviensui.xyz

appf.life

bilalsolution.com

technoratii.com

11restoran.com

birthingly.com

crystalcarrillo.com

cohenasset.info

bunchofdesign.com

highstreetmag.com

talentkerning.com

outdoor-glassesadvice.com

aliceeety.com

habbuhot.info

pao91.com

Signatures

  • Formbook

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

  • suricata: ET MALWARE FormBook CnC Checkin (GET)

    suricata: ET MALWARE FormBook CnC Checkin (GET)

  • Formbook Payload 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 2 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 FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 5 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Factura de proforma.exe
    "C:\Users\Admin\AppData\Local\Temp\Factura de proforma.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:1836
    • C:\Windows\SysWOW64\DpiScaling.exe
      C:\Windows\System32\DpiScaling.exe
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      PID:1664
  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1276
    • C:\Windows\SysWOW64\systray.exe
      "C:\Windows\SysWOW64\systray.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1176
      • C:\Windows\SysWOW64\cmd.exe
        /c del "C:\Windows\SysWOW64\DpiScaling.exe"
        3⤵
          PID:1992

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Defense Evasion

    Modify Registry

    1
    T1112

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1176-74-0x0000000001CC0000-0x0000000001D53000-memory.dmp
      Filesize

      588KB

    • memory/1176-72-0x0000000001E40000-0x0000000002143000-memory.dmp
      Filesize

      3.0MB

    • memory/1176-70-0x00000000002C0000-0x00000000002C5000-memory.dmp
      Filesize

      20KB

    • memory/1176-71-0x0000000000100000-0x000000000012E000-memory.dmp
      Filesize

      184KB

    • memory/1176-69-0x0000000000000000-mapping.dmp
    • memory/1276-68-0x0000000004390000-0x0000000004463000-memory.dmp
      Filesize

      844KB

    • memory/1276-75-0x0000000007100000-0x000000000722C000-memory.dmp
      Filesize

      1.2MB

    • memory/1664-59-0x0000000000080000-0x0000000000081000-memory.dmp
      Filesize

      4KB

    • memory/1664-66-0x0000000001EF0000-0x00000000021F3000-memory.dmp
      Filesize

      3.0MB

    • memory/1664-65-0x0000000072480000-0x00000000724AE000-memory.dmp
      Filesize

      184KB

    • memory/1664-67-0x0000000000280000-0x0000000000294000-memory.dmp
      Filesize

      80KB

    • memory/1664-64-0x0000000000090000-0x0000000000091000-memory.dmp
      Filesize

      4KB

    • memory/1664-61-0x0000000000000000-mapping.dmp
    • memory/1664-58-0x0000000072480000-0x00000000724AE000-memory.dmp
      Filesize

      184KB

    • memory/1836-55-0x0000000000220000-0x0000000000221000-memory.dmp
      Filesize

      4KB

    • memory/1836-57-0x0000000075D41000-0x0000000075D43000-memory.dmp
      Filesize

      8KB

    • memory/1836-56-0x0000000000241000-0x0000000000255000-memory.dmp
      Filesize

      80KB

    • memory/1992-73-0x0000000000000000-mapping.dmp