Analysis

  • max time kernel
    150s
  • max time network
    142s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    20-04-2021 19:45

General

  • Target

    PO.exe

  • Size

    234KB

  • MD5

    220dd8a37c0783d1e906525186ddc95c

  • SHA1

    0153efd575f5ce0afeb5e8e7f40b6d0e0967e456

  • SHA256

    7de63d57554daf81ef5bd3508fce96ae9d2eaae9bee30eb29d147095b3d9ea33

  • SHA512

    5fab23a422fb69d302d4c60cc347007dee423af00657386a3a232ab7faadd70903d11ef7b3cfc957bad431b519bf205e328427f67af3a4303e25c9f009f2c224

Malware Config

Extracted

Family

formbook

Version

4.1

C2

http://www.middlehambooks.com/klf/

Decoy

podcastyourvote.com

northernlsx.com

guide4idiots.com

artebythesea.com

sapanyc.com

livinoutthedreamsco.com

thepowersinyou.com

protocolmodern.com

holdergear.com

betteringthehumanexperience.xyz

agnostec.com

royermaldonado.com

wealthtruckingco.com

artcode-software.com

microsoftpods.com

identityofplace.com

algoritas.com

grandpaurbanfarm.net

zahidibr.com

flawlessdrinking.com

Signatures

  • Formbook

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

  • Formbook Payload 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Suspicious use of SetThreadContext 4 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 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2416
    • C:\Users\Admin\AppData\Local\Temp\PO.exe
      "C:\Users\Admin\AppData\Local\Temp\PO.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:4432
      • C:\Users\Admin\AppData\Local\Temp\PO.exe
        "C:\Users\Admin\AppData\Local\Temp\PO.exe"
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of AdjustPrivilegeToken
        PID:4900
    • C:\Windows\SysWOW64\msdt.exe
      "C:\Windows\SysWOW64\msdt.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3076
      • C:\Windows\SysWOW64\cmd.exe
        /c del "C:\Users\Admin\AppData\Local\Temp\PO.exe"
        3⤵
          PID:4064

    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\nsv9CB.tmp\55po.dll
      MD5

      f8b51fd6f70455d07c7a53a8ace81744

      SHA1

      91aa6dfa7c86b36fa1ddf92852f52325c013616d

      SHA256

      9cd220598c67347558abafebb4208c8c01c0ca692f517325bcc626e013d570ae

      SHA512

      40ab512f99a557252c77bd87d9aae14183272cb3461db8658bda83800293695f54fc6aa7741c02eb280a11805fef5a762ea3cdc61c6ed5bc47cb67ce1aa1a972

    • memory/2416-121-0x0000000005860000-0x00000000059AD000-memory.dmp
      Filesize

      1.3MB

    • memory/2416-130-0x00000000069B0000-0x0000000006B1E000-memory.dmp
      Filesize

      1.4MB

    • memory/2416-123-0x00000000059B0000-0x0000000005AEB000-memory.dmp
      Filesize

      1.2MB

    • memory/3076-125-0x0000000000FF0000-0x0000000001163000-memory.dmp
      Filesize

      1.4MB

    • memory/3076-124-0x0000000000000000-mapping.dmp
    • memory/3076-126-0x0000000000ED0000-0x0000000000EFE000-memory.dmp
      Filesize

      184KB

    • memory/3076-127-0x00000000052E0000-0x0000000005600000-memory.dmp
      Filesize

      3.1MB

    • memory/3076-129-0x0000000005040000-0x00000000050D3000-memory.dmp
      Filesize

      588KB

    • memory/4064-128-0x0000000000000000-mapping.dmp
    • memory/4432-116-0x0000000002710000-0x0000000002711000-memory.dmp
      Filesize

      4KB

    • memory/4432-117-0x0000000002711000-0x0000000002713000-memory.dmp
      Filesize

      8KB

    • memory/4900-118-0x0000000000400000-0x000000000042E000-memory.dmp
      Filesize

      184KB

    • memory/4900-120-0x00000000008D0000-0x00000000008E4000-memory.dmp
      Filesize

      80KB

    • memory/4900-119-0x0000000000970000-0x0000000000C90000-memory.dmp
      Filesize

      3.1MB

    • memory/4900-122-0x0000000000920000-0x0000000000934000-memory.dmp
      Filesize

      80KB

    • memory/4900-115-0x000000000041EB20-mapping.dmp