Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    16/06/2022, 09:52

General

  • Target

    SR20220600525003,xlsx.exe

  • Size

    239KB

  • MD5

    1a6d08a5620ad7bfe08c88f9d47c4529

  • SHA1

    028e7cab4e3c2254bd7c45e52725a5a67ae7ef8c

  • SHA256

    a6e44c3ff8fe63ee5d3b07ad20299fe8f5bf59eead301cf5510974ad5f1285d4

  • SHA512

    cc93ef0ed7324510517a09dd94b727c55bc2943c3294ee031170a39d3b7208d74ff6c0c328d85774f9277fed161b05527201675626a4ee290e0dccf08f97d94f

Malware Config

Extracted

Family

xloader

Version

2.6

Campaign

tn61

Decoy

ryliehorrall.art

mesdco.net

street-art-ink.com

sepetcin.com

stilghar.com

hawaiipooltiles.com

fuerst-von-falkennest.com

totalvirtue.com

xdk0blc0tqy6a7.life

zootowngravel.com

kreditkarten-optionde.com

6888tlbb.xyz

albertakleekai.com

travelnurseinfofinder3.life

valleyinnswat.com

secure-remove-devices.com

digitalswamy.com

www112casinova.com

medifasttrd.com

distritoxermar.com

Signatures

  • Formbook

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

  • Xloader

    Xloader is a rebranded version of Formbook malware.

  • suricata: ET MALWARE FormBook CnC Checkin (GET)

    suricata: ET MALWARE FormBook CnC Checkin (GET)

  • Xloader Payload 5 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Drops file in Program Files directory 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 22 IoCs
  • Suspicious behavior: MapViewOfSection 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of WriteProcessMemory 22 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1204
    • C:\Users\Admin\AppData\Local\Temp\SR20220600525003,xlsx.exe
      "C:\Users\Admin\AppData\Local\Temp\SR20220600525003,xlsx.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:1672
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of AdjustPrivilegeToken
        PID:1164
    • C:\Windows\SysWOW64\rundll32.exe
      "C:\Windows\SysWOW64\rundll32.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Drops file in Program Files directory
      • Modifies Internet Explorer settings
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1344
      • C:\Windows\SysWOW64\cmd.exe
        /c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"
        3⤵
          PID:1268
        • C:\Program Files\Mozilla Firefox\Firefox.exe
          "C:\Program Files\Mozilla Firefox\Firefox.exe"
          3⤵
            PID:796

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • memory/1164-57-0x0000000000400000-0x000000000042B000-memory.dmp

              Filesize

              172KB

            • memory/1164-56-0x0000000000400000-0x000000000042B000-memory.dmp

              Filesize

              172KB

            • memory/1164-59-0x0000000000400000-0x000000000042B000-memory.dmp

              Filesize

              172KB

            • memory/1164-62-0x0000000000400000-0x000000000042B000-memory.dmp

              Filesize

              172KB

            • memory/1164-63-0x0000000000AE0000-0x0000000000DE3000-memory.dmp

              Filesize

              3.0MB

            • memory/1164-64-0x0000000000180000-0x0000000000191000-memory.dmp

              Filesize

              68KB

            • memory/1204-75-0x00000000047F0000-0x00000000048A9000-memory.dmp

              Filesize

              740KB

            • memory/1204-65-0x0000000003DF0000-0x0000000003EA2000-memory.dmp

              Filesize

              712KB

            • memory/1204-73-0x00000000047F0000-0x00000000048A9000-memory.dmp

              Filesize

              740KB

            • memory/1344-67-0x0000000075B61000-0x0000000075B63000-memory.dmp

              Filesize

              8KB

            • memory/1344-69-0x0000000000FA0000-0x0000000000FAE000-memory.dmp

              Filesize

              56KB

            • memory/1344-71-0x00000000023B0000-0x00000000026B3000-memory.dmp

              Filesize

              3.0MB

            • memory/1344-70-0x0000000000110000-0x000000000013B000-memory.dmp

              Filesize

              172KB

            • memory/1344-72-0x00000000007E0000-0x0000000000870000-memory.dmp

              Filesize

              576KB

            • memory/1344-74-0x0000000000110000-0x000000000013B000-memory.dmp

              Filesize

              172KB

            • memory/1672-54-0x0000000001090000-0x00000000010CC000-memory.dmp

              Filesize

              240KB

            • memory/1672-55-0x0000000000270000-0x00000000002A6000-memory.dmp

              Filesize

              216KB