Analysis

  • max time kernel
    150s
  • max time network
    138s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    16/04/2021, 05:38

General

  • Target
    SHIPPING DOCUMENTS.exe
  • Size 228KB
  • Sample210416-fd5mcewlr6
  • SHA256 d669d899b7cd236de403fd42807fffcf3600d5070d42e09e21f67ded211a504f
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • formbook

Version
  • 4.1

C2
  • http://www.riceandginger.com/fcn/

Decoy
  • bellee-select.com

  • unlock-motorola.com

  • courtneyrunyon.com

  • hnzywjz.com

  • retrievingbest.net

  • ayescarrental.com

  • beyoutifulblessings.com

  • heritagediscovery.net

  • fasoum.com

  • wbz.xyz

  • lownak.com

  • alinkarmay.com

  • coffeyquiltco.com

  • validdreamers.com

  • yuksukcu.club

  • buildnextfrc.com

  • avantfarme.com

  • xyfs360.com

  • holisticpacific.com

  • banejia.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 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 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of WriteProcessMemory
    PID:3044
    • C:\Users\Admin\AppData\Local\Temp\SHIPPING DOCUMENTS.exe
      "C:\Users\Admin\AppData\Local\Temp\SHIPPING DOCUMENTS.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:856
      • C:\Users\Admin\AppData\Local\Temp\SHIPPING DOCUMENTS.exe
        "C:\Users\Admin\AppData\Local\Temp\SHIPPING DOCUMENTS.exe"
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of AdjustPrivilegeToken
        PID:2952
    • C:\Windows\SysWOW64\autochk.exe
      "C:\Windows\SysWOW64\autochk.exe"
      2⤵
        PID:2920
      • C:\Windows\SysWOW64\cmstp.exe
        "C:\Windows\SysWOW64\cmstp.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:632
        • C:\Windows\SysWOW64\cmd.exe
          /c del "C:\Users\Admin\AppData\Local\Temp\SHIPPING DOCUMENTS.exe"
          3⤵
            PID:2336

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            memory/632-123-0x0000000000DB0000-0x0000000000DC6000-memory.dmp

            memory/632-127-0x0000000000CA0000-0x0000000000D33000-memory.dmp

            memory/632-126-0x0000000004370000-0x0000000004690000-memory.dmp

            memory/632-124-0x0000000000140000-0x000000000016E000-memory.dmp

            memory/856-116-0x0000000003160000-0x0000000003161000-memory.dmp

            memory/856-118-0x0000000003161000-0x0000000003163000-memory.dmp

            memory/2952-117-0x0000000000A70000-0x0000000000D90000-memory.dmp

            memory/2952-119-0x0000000000400000-0x000000000042E000-memory.dmp

            memory/2952-120-0x0000000000560000-0x00000000006AA000-memory.dmp

            memory/3044-121-0x0000000005800000-0x00000000058EF000-memory.dmp

            memory/3044-128-0x00000000058F0000-0x0000000005A51000-memory.dmp