Analysis

  • max time kernel
    147s
  • max time network
    135s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    26-11-2020 06:39

General

  • Target

    purchase order.exe

  • Size

    887KB

  • MD5

    975187a07455d3cbf38ec878d893b490

  • SHA1

    af8ddbf775cdb9dbd3776f717c192094202127be

  • SHA256

    009d9a0f6fafa91b750271413fef5771a4ce5855a59c0e6c16c85eb7de08e52b

  • SHA512

    378768e3aa1a49e6dce7a83197c1eceb86111422a6886fbe9e3ba7df75ce2bdb0f0979620a8eb905153caf276b43a23dd19885ff487586b3069a515cceb15222

Malware Config

Extracted

Family

formbook

C2

http://www.firedoom.com/sbmh/

Decoy

edlasyarns.com

rettexo.com

friendlyksa.com

westhighlandwaytours.com

goudmarket.com

turkime.com

wellnysdirect.com

handydanny.net

ylccmakq.com

benefits-sherpa.com

sousolutions.net

lspcall.com

makgxoimisitzer.info

katrinarask.com

istanbulconsulter.net

mingjiaxuan.com

faculdadegraca.com

kikegbwebdesign.com

69ase.com

downrangedynamics.com

Signatures

  • Formbook

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

  • Formbook Payload 3 IoCs
  • Looks for VirtualBox Guest Additions in registry 2 TTPs
  • Looks for VMWare Tools registry key 2 TTPs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • Suspicious use of SetThreadContext 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 41 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:3028
    • C:\Users\Admin\AppData\Local\Temp\purchase order.exe
      "C:\Users\Admin\AppData\Local\Temp\purchase order.exe"
      2⤵
      • Checks BIOS information in registry
      • Maps connected drives based on registry
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4684
      • C:\Users\Admin\AppData\Local\Temp\purchase order.exe
        "C:\Users\Admin\AppData\Local\Temp\purchase order.exe"
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of AdjustPrivilegeToken
        PID:892
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\SysWOW64\cmd.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:800
      • C:\Windows\SysWOW64\cmd.exe
        /c del "C:\Users\Admin\AppData\Local\Temp\purchase order.exe"
        3⤵
          PID:1108

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Defense Evasion

    Virtualization/Sandbox Evasion

    2
    T1497

    Discovery

    Query Registry

    4
    T1012

    Virtualization/Sandbox Evasion

    2
    T1497

    System Information Discovery

    2
    T1082

    Peripheral Device Discovery

    1
    T1120

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/800-18-0x0000000004020000-0x00000000041B3000-memory.dmp
      Filesize

      1MB

    • memory/800-16-0x00000000001A0000-0x00000000001F9000-memory.dmp
      Filesize

      356KB

    • memory/800-15-0x00000000001A0000-0x00000000001F9000-memory.dmp
      Filesize

      356KB

    • memory/800-14-0x0000000000000000-mapping.dmp
    • memory/892-12-0x0000000000400000-0x000000000042E000-memory.dmp
      Filesize

      184KB

    • memory/892-13-0x000000000041ECD0-mapping.dmp
    • memory/1108-17-0x0000000000000000-mapping.dmp
    • memory/4684-5-0x0000000005A80000-0x0000000005A81000-memory.dmp
      Filesize

      4KB

    • memory/4684-9-0x00000000067E0000-0x0000000006845000-memory.dmp
      Filesize

      404KB

    • memory/4684-10-0x00000000066A0000-0x00000000066D0000-memory.dmp
      Filesize

      192KB

    • memory/4684-11-0x0000000006930000-0x0000000006931000-memory.dmp
      Filesize

      4KB

    • memory/4684-8-0x0000000005A20000-0x0000000005A33000-memory.dmp
      Filesize

      76KB

    • memory/4684-7-0x0000000005BE0000-0x0000000005BE1000-memory.dmp
      Filesize

      4KB

    • memory/4684-6-0x0000000005A00000-0x0000000005A01000-memory.dmp
      Filesize

      4KB

    • memory/4684-0-0x0000000073430000-0x0000000073B1E000-memory.dmp
      Filesize

      6MB

    • memory/4684-4-0x0000000005EE0000-0x0000000005EE1000-memory.dmp
      Filesize

      4KB

    • memory/4684-3-0x0000000005940000-0x0000000005941000-memory.dmp
      Filesize

      4KB

    • memory/4684-1-0x0000000000CB0000-0x0000000000CB1000-memory.dmp
      Filesize

      4KB