Analysis

  • max time kernel
    150s
  • max time network
    144s
  • platform
    windows7_x64
  • resource
    win7-en-20211104
  • submitted
    10-11-2021 14:08

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.

  • suricata: ET MALWARE FormBook CnC Checkin (GET)

    suricata: ET MALWARE FormBook CnC Checkin (GET)

  • Formbook Payload 3 IoCs
  • Deletes itself 1 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 30 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 2 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • 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:1412
    • 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:976
      • 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:1212
    • C:\Windows\SysWOW64\wscript.exe
      "C:\Windows\SysWOW64\wscript.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1376
      • C:\Windows\SysWOW64\cmd.exe
        /c del "C:\Users\Admin\AppData\Local\Temp\order_pdf.exe"
        3⤵
        • Deletes itself
        PID:1696

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\nstE976.tmp\zbjmehtgrem.dll
    MD5

    4ab3ba7ed270a7000329c389fc2ea1ca

    SHA1

    73c7a6e08cc614890d7c7af9465050ec79a4b31d

    SHA256

    d9eac565c15e1ebb04f1470737155fdbad92e27d070375ad478e3a946b6d84e9

    SHA512

    878f23852d79864d270db94e18331eb479632a962554bb79fa2430dd3365f0a3d2bf658ca62742bed802b391e6915e70b2ddac16e925ff511cdeb4ebc9f4151f

  • memory/976-55-0x0000000075C51000-0x0000000075C53000-memory.dmp
    Filesize

    8KB

  • memory/1212-57-0x0000000000400000-0x000000000042F000-memory.dmp
    Filesize

    188KB

  • memory/1212-58-0x000000000041F200-mapping.dmp
  • memory/1212-60-0x00000000008C0000-0x0000000000BC3000-memory.dmp
    Filesize

    3.0MB

  • memory/1212-61-0x0000000000480000-0x0000000000495000-memory.dmp
    Filesize

    84KB

  • memory/1376-64-0x0000000000750000-0x0000000000776000-memory.dmp
    Filesize

    152KB

  • memory/1376-63-0x0000000000000000-mapping.dmp
  • memory/1376-65-0x0000000001FE0000-0x00000000022E3000-memory.dmp
    Filesize

    3.0MB

  • memory/1376-66-0x00000000000D0000-0x00000000000FF000-memory.dmp
    Filesize

    188KB

  • memory/1376-68-0x0000000001ED0000-0x0000000001F64000-memory.dmp
    Filesize

    592KB

  • memory/1412-62-0x0000000006D10000-0x0000000006E19000-memory.dmp
    Filesize

    1.0MB

  • memory/1412-69-0x0000000007CE0000-0x0000000007E5E000-memory.dmp
    Filesize

    1.5MB

  • memory/1696-67-0x0000000000000000-mapping.dmp