Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10_x64
  • resource
    win10-en-20211014
  • submitted
    23/11/2021, 19:55

General

  • Target
    DHL_119040 documento de recibo de la compra,pdf.exe
  • Size 324KB
  • Sample211123-ym4xesecf4
  • SHA256 d96040239b3b2251bbe2e9aeb3f00cfef3917b6427ce2b42260bb437351e6476
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • formbook

Version
  • 4.1

Campaign
  • c1h5

C2
  • http://www.coralxlix.com/c1h5/

Decoy
  • ui4dev.com

  • horrycountyrealtor.com

  • abivz.icu

  • toxicwokeness.com

  • fillthegap.site

  • surprisessinside.com

  • metaversefinder.xyz

  • freeshipflowers.com

  • apacheicon.com

  • greenfootprintpros.com

  • topauonlinecasino.com

  • weqffg.site

  • bountylux.com

  • eedrvheyn.sbs

  • whiskeybentmobile.com

  • yupeg.xyz

  • thenorthwesthome.com

  • cyril.ventures

  • zukunsmart.com

  • 1l7kng51j4nm.site

Signatures

  • Formbook

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

  • Formbook Payload 4 IoCs
  • Loads dropped DLL 1 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 60 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of WriteProcessMemory
    PID:3056
    • C:\Users\Admin\AppData\Local\Temp\DHL_119040 documento de recibo de la compra,pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\DHL_119040 documento de recibo de la compra,pdf.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:2748
      • C:\Users\Admin\AppData\Local\Temp\DHL_119040 documento de recibo de la compra,pdf.exe
        "C:\Users\Admin\AppData\Local\Temp\DHL_119040 documento de recibo de la compra,pdf.exe"
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of AdjustPrivilegeToken
        PID:3756
    • C:\Windows\SysWOW64\raserver.exe
      "C:\Windows\SysWOW64\raserver.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4048
      • C:\Windows\SysWOW64\cmd.exe
        /c del "C:\Users\Admin\AppData\Local\Temp\DHL_119040 documento de recibo de la compra,pdf.exe"
        3⤵
          PID:1648

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          memory/3056-129-0x0000000005E10000-0x0000000005F25000-memory.dmp

          memory/3056-122-0x0000000005050000-0x00000000051A2000-memory.dmp

          memory/3756-117-0x0000000000400000-0x000000000042F000-memory.dmp

          memory/3756-121-0x00000000004F0000-0x000000000063A000-memory.dmp

          memory/3756-120-0x0000000000A40000-0x0000000000D60000-memory.dmp

          memory/4048-126-0x00000000001B0000-0x00000000001DF000-memory.dmp

          memory/4048-127-0x0000000000EB0000-0x00000000011D0000-memory.dmp

          memory/4048-128-0x0000000000D10000-0x0000000000DA3000-memory.dmp

          memory/4048-125-0x0000000001290000-0x00000000012AF000-memory.dmp