Analysis

  • max time kernel
    140s
  • max time network
    105s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09-05-2024 19:02

General

  • Target

    PO181219.exe

  • Size

    466KB

  • MD5

    9f1c4ea29a9490e84c85ee622ebbee83

  • SHA1

    03eb6bec9ca71f61726134e031ef1c96609c6fbf

  • SHA256

    4cf3f2e4957d449f51f1a5dd6b20765aa7a1fe89231f1ea3748cd0c0e90d74c4

  • SHA512

    2eccd244877aae74692294905fa6d11e7b1d67d03c44147f59dddf1b6d6ffe849529bf1e0ccd1b142d5767c281e229053d6d5d513bcc3c0ec9b428a735ed5f97

  • SSDEEP

    12288:jGNJ561IweViPtQjDMEnSHTigQWX+T/XRfoxwo4P:jGGy+t8kTEOY/4wo4

Malware Config

Extracted

Family

formbook

Version

3.9

Campaign

h332

Decoy

mericashoppe.com

campbneiakiva.com

retronix.info

capellisnyc.com

lapcameratot.com

otheroffice.win

biofrez.com

servo-electric.com

hfhkjd.com

chemungccecornell.com

leanneetsaparure.com

collaboraveit.com

thecarewear.info

truymanhaaseinsurance.com

krishnagruhudhyog.com

maxwellbeing.store

cgevent35.com

easyclick.directory

andseniorhomesok.live

dagashiya-bitcoin.com

Signatures

  • Formbook

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

  • Formbook payload 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Program crash 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PO181219.exe
    "C:\Users\Admin\AppData\Local\Temp\PO181219.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2244
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c copy "C:\Users\Admin\AppData\Local\Temp\PO181219.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\thxx.exe"
      2⤵
        PID:4540
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c, "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\thxx.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1648
        • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\thxx.exe
          "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\thxx.exe"
          3⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious use of SetThreadContext
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:4424
          • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\thxx.exe
            "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\thxx.exe"
            4⤵
            • Executes dropped EXE
            PID:4696
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 4696 -s 184
              5⤵
              • Program crash
              PID:3044
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4696 -ip 4696
      1⤵
        PID:1976

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\thxx.exe

        Filesize

        466KB

        MD5

        9f1c4ea29a9490e84c85ee622ebbee83

        SHA1

        03eb6bec9ca71f61726134e031ef1c96609c6fbf

        SHA256

        4cf3f2e4957d449f51f1a5dd6b20765aa7a1fe89231f1ea3748cd0c0e90d74c4

        SHA512

        2eccd244877aae74692294905fa6d11e7b1d67d03c44147f59dddf1b6d6ffe849529bf1e0ccd1b142d5767c281e229053d6d5d513bcc3c0ec9b428a735ed5f97

      • memory/2244-6-0x0000000074CE0000-0x0000000075490000-memory.dmp

        Filesize

        7.7MB

      • memory/2244-1-0x0000000000710000-0x000000000078E000-memory.dmp

        Filesize

        504KB

      • memory/2244-3-0x0000000005210000-0x00000000052A2000-memory.dmp

        Filesize

        584KB

      • memory/2244-4-0x0000000005170000-0x00000000051AA000-memory.dmp

        Filesize

        232KB

      • memory/2244-5-0x0000000005130000-0x000000000514C000-memory.dmp

        Filesize

        112KB

      • memory/2244-0-0x0000000074CEE000-0x0000000074CEF000-memory.dmp

        Filesize

        4KB

      • memory/2244-10-0x0000000074CE0000-0x0000000075490000-memory.dmp

        Filesize

        7.7MB

      • memory/2244-2-0x0000000005720000-0x0000000005CC4000-memory.dmp

        Filesize

        5.6MB

      • memory/4424-14-0x0000000074CE0000-0x0000000075490000-memory.dmp

        Filesize

        7.7MB

      • memory/4424-15-0x0000000074CE0000-0x0000000075490000-memory.dmp

        Filesize

        7.7MB

      • memory/4424-16-0x00000000087C0000-0x000000000885C000-memory.dmp

        Filesize

        624KB

      • memory/4424-17-0x0000000074CE0000-0x0000000075490000-memory.dmp

        Filesize

        7.7MB

      • memory/4424-22-0x0000000074CE0000-0x0000000075490000-memory.dmp

        Filesize

        7.7MB

      • memory/4696-19-0x0000000000810000-0x000000000083A000-memory.dmp

        Filesize

        168KB