Analysis

  • max time kernel
    153s
  • max time network
    150s
  • platform
    windows10_x64
  • resource
    win10-en-20211014
  • submitted
    10-11-2021 14:36

General

  • Target

    order_pdf.exe

  • Size

    558KB

  • MD5

    f701380621cd00eaebe9be15aab38322

  • SHA1

    0ed1622d9293863e74abf12997ddbb907e9740fc

  • SHA256

    5897e2feb000fd14575cb3dd4e871c2cc2374c3811ab51a9cf4ff49a46f05689

  • SHA512

    034b55e4845b55e8f1160f1bc2ef3643a5638be36887bca1f55c5e865c82246c7d05513003d7da4457e6a7f02715eb90cbdad5f69503fac64e75993d769b2f53

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

dn7r

C2

http://www.yourherogarden.net/dn7r/

Decoy

eventphotographerdfw.com

thehalalcoinstaking.com

philipfaziofineart.com

intercoh.com

gaiaseyephotography.com

chatbotforrealestate.com

lovelancemg.com

marlieskasberger.com

elcongoenespanol.info

lepirecredit.com

distribution-concept.com

e99game.com

exit11festival.com

twodollartoothbrushclub.com

cocktailsandlawn.com

performimprove.network

24horas-telefono-11840.com

cosmossify.com

kellenleote.com

perovskite.energy

Signatures

  • Formbook

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

  • Formbook Payload 3 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 58 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:3024
    • C:\Users\Admin\AppData\Local\Temp\order_pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\order_pdf.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:2780
      • C:\Users\Admin\AppData\Local\Temp\order_pdf.exe
        "C:\Users\Admin\AppData\Local\Temp\order_pdf.exe"
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of AdjustPrivilegeToken
        PID:1460
    • C:\Windows\SysWOW64\rundll32.exe
      "C:\Windows\SysWOW64\rundll32.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1496
      • C:\Windows\SysWOW64\cmd.exe
        /c del "C:\Users\Admin\AppData\Local\Temp\order_pdf.exe"
        3⤵
          PID:3268

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Discovery

    System Information Discovery

    1
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • \Users\Admin\AppData\Local\Temp\nsdE522.tmp\zbjmehtgrem.dll
      MD5

      4ab3ba7ed270a7000329c389fc2ea1ca

      SHA1

      73c7a6e08cc614890d7c7af9465050ec79a4b31d

      SHA256

      d9eac565c15e1ebb04f1470737155fdbad92e27d070375ad478e3a946b6d84e9

      SHA512

      878f23852d79864d270db94e18331eb479632a962554bb79fa2430dd3365f0a3d2bf658ca62742bed802b391e6915e70b2ddac16e925ff511cdeb4ebc9f4151f

    • memory/1460-119-0x0000000000400000-0x000000000042F000-memory.dmp
      Filesize

      188KB

    • memory/1460-120-0x000000000041F200-mapping.dmp
    • memory/1460-121-0x00000000009C0000-0x0000000000CE0000-memory.dmp
      Filesize

      3.1MB

    • memory/1460-123-0x0000000000DD0000-0x0000000000DE5000-memory.dmp
      Filesize

      84KB

    • memory/1496-125-0x0000000000000000-mapping.dmp
    • memory/1496-127-0x0000000001380000-0x0000000001393000-memory.dmp
      Filesize

      76KB

    • memory/1496-128-0x00000000003A0000-0x00000000003CF000-memory.dmp
      Filesize

      188KB

    • memory/1496-129-0x0000000000DA0000-0x00000000010C0000-memory.dmp
      Filesize

      3.1MB

    • memory/1496-130-0x0000000000C90000-0x0000000000D24000-memory.dmp
      Filesize

      592KB

    • memory/3024-124-0x0000000002F70000-0x000000000303E000-memory.dmp
      Filesize

      824KB

    • memory/3024-131-0x0000000006490000-0x00000000065F0000-memory.dmp
      Filesize

      1.4MB

    • memory/3268-126-0x0000000000000000-mapping.dmp