Analysis

  • max time kernel
    148s
  • max time network
    142s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    16/06/2022, 09:47

General

  • Target

    Order no.22 3737-3748.xlsx

  • Size

    255KB

  • MD5

    cdfa41a744ed703285b377268108a2af

  • SHA1

    316f7c7129ca29c19d4227c78480bff784de29a3

  • SHA256

    ee473a7accd124448fb8eccd49328baa2cf597ea14d9d1b7a1dac80fc53057ad

  • SHA512

    93013216c4069348e279206b94f80e9826079ec1409cdd497aeb81e604935ba94398a400c779396034de4c5f3be5d10ada8c27c54edaa46e219357aa2d22c38f

Malware Config

Extracted

Family

xloader

Version

2.6

Campaign

oecd

Decoy

mrcrickethighlights.com

milozzo.com

biggorillacreative.com

pecwi67.store

stoneeast.com

redicredi.com

warrentonvalodging.com

lexbbc.com

acmet-shirtco.com

grocits.com

vlconstruction.info

jxstore1.com

lifeenrollmarketplace.com

wgr5n.xyz

710wgm.com

ccrdidkqpoxzrrpfpmcb.com

boswellbrothersofnc.net

girajewelry.com

primesukkah.com

daotengge.com

Signatures

  • 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
  • Blocklisted process makes network request 1 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 4 IoCs
  • Uses the VBS compiler for execution 1 TTPs
  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Launches Equation Editor 1 TTPs 1 IoCs

    Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1292
    • 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\Order no.22 3737-3748.xlsx"
      2⤵
      • Enumerates system info in registry
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      PID:1080
    • C:\Windows\SysWOW64\raserver.exe
      "C:\Windows\SysWOW64\raserver.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1600
      • C:\Windows\SysWOW64\cmd.exe
        /c del "C:\Users\Public\vbc.exe"
        3⤵
          PID:932
    • C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
      "C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
      1⤵
      • Blocklisted process makes network request
      • Loads dropped DLL
      • Launches Equation Editor
      • Suspicious use of WriteProcessMemory
      PID:1776
      • C:\Users\Public\vbc.exe
        "C:\Users\Public\vbc.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1172
        • C:\Users\Public\vbc.exe
          "C:\Users\Public\vbc.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of AdjustPrivilegeToken
          PID:1076

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Public\vbc.exe

            Filesize

            632KB

            MD5

            f413642263b39b39fc90ea1ef32bcc01

            SHA1

            6ae21aa75be549567131a4d4acf4dfb68d40ecf7

            SHA256

            f62c3f81cd0f8db52470b8ca25ffae0c0eb20c202e90db9425e9904d3e673b8d

            SHA512

            71893e9a24e54af2acda3aea6cdc9be27c64287fb849b55b0ac0512b9aeda88a446f7054b6ccfc75668a9ce285235d970204817e786ab6409ae41a58dcd15af3

          • C:\Users\Public\vbc.exe

            Filesize

            632KB

            MD5

            f413642263b39b39fc90ea1ef32bcc01

            SHA1

            6ae21aa75be549567131a4d4acf4dfb68d40ecf7

            SHA256

            f62c3f81cd0f8db52470b8ca25ffae0c0eb20c202e90db9425e9904d3e673b8d

            SHA512

            71893e9a24e54af2acda3aea6cdc9be27c64287fb849b55b0ac0512b9aeda88a446f7054b6ccfc75668a9ce285235d970204817e786ab6409ae41a58dcd15af3

          • C:\Users\Public\vbc.exe

            Filesize

            632KB

            MD5

            f413642263b39b39fc90ea1ef32bcc01

            SHA1

            6ae21aa75be549567131a4d4acf4dfb68d40ecf7

            SHA256

            f62c3f81cd0f8db52470b8ca25ffae0c0eb20c202e90db9425e9904d3e673b8d

            SHA512

            71893e9a24e54af2acda3aea6cdc9be27c64287fb849b55b0ac0512b9aeda88a446f7054b6ccfc75668a9ce285235d970204817e786ab6409ae41a58dcd15af3

          • \Users\Public\vbc.exe

            Filesize

            632KB

            MD5

            f413642263b39b39fc90ea1ef32bcc01

            SHA1

            6ae21aa75be549567131a4d4acf4dfb68d40ecf7

            SHA256

            f62c3f81cd0f8db52470b8ca25ffae0c0eb20c202e90db9425e9904d3e673b8d

            SHA512

            71893e9a24e54af2acda3aea6cdc9be27c64287fb849b55b0ac0512b9aeda88a446f7054b6ccfc75668a9ce285235d970204817e786ab6409ae41a58dcd15af3

          • \Users\Public\vbc.exe

            Filesize

            632KB

            MD5

            f413642263b39b39fc90ea1ef32bcc01

            SHA1

            6ae21aa75be549567131a4d4acf4dfb68d40ecf7

            SHA256

            f62c3f81cd0f8db52470b8ca25ffae0c0eb20c202e90db9425e9904d3e673b8d

            SHA512

            71893e9a24e54af2acda3aea6cdc9be27c64287fb849b55b0ac0512b9aeda88a446f7054b6ccfc75668a9ce285235d970204817e786ab6409ae41a58dcd15af3

          • \Users\Public\vbc.exe

            Filesize

            632KB

            MD5

            f413642263b39b39fc90ea1ef32bcc01

            SHA1

            6ae21aa75be549567131a4d4acf4dfb68d40ecf7

            SHA256

            f62c3f81cd0f8db52470b8ca25ffae0c0eb20c202e90db9425e9904d3e673b8d

            SHA512

            71893e9a24e54af2acda3aea6cdc9be27c64287fb849b55b0ac0512b9aeda88a446f7054b6ccfc75668a9ce285235d970204817e786ab6409ae41a58dcd15af3

          • \Users\Public\vbc.exe

            Filesize

            632KB

            MD5

            f413642263b39b39fc90ea1ef32bcc01

            SHA1

            6ae21aa75be549567131a4d4acf4dfb68d40ecf7

            SHA256

            f62c3f81cd0f8db52470b8ca25ffae0c0eb20c202e90db9425e9904d3e673b8d

            SHA512

            71893e9a24e54af2acda3aea6cdc9be27c64287fb849b55b0ac0512b9aeda88a446f7054b6ccfc75668a9ce285235d970204817e786ab6409ae41a58dcd15af3

          • memory/1076-82-0x00000000003C0000-0x00000000003D1000-memory.dmp

            Filesize

            68KB

          • memory/1076-76-0x0000000000400000-0x000000000042B000-memory.dmp

            Filesize

            172KB

          • memory/1076-80-0x0000000000400000-0x000000000042B000-memory.dmp

            Filesize

            172KB

          • memory/1076-73-0x0000000000400000-0x000000000042B000-memory.dmp

            Filesize

            172KB

          • memory/1076-74-0x0000000000400000-0x000000000042B000-memory.dmp

            Filesize

            172KB

          • memory/1076-81-0x00000000009D0000-0x0000000000CD3000-memory.dmp

            Filesize

            3.0MB

          • memory/1080-70-0x000000007249D000-0x00000000724A8000-memory.dmp

            Filesize

            44KB

          • memory/1080-58-0x00000000752D1000-0x00000000752D3000-memory.dmp

            Filesize

            8KB

          • memory/1080-91-0x000000005FFF0000-0x0000000060000000-memory.dmp

            Filesize

            64KB

          • memory/1080-54-0x000000002F771000-0x000000002F774000-memory.dmp

            Filesize

            12KB

          • memory/1080-92-0x000000007249D000-0x00000000724A8000-memory.dmp

            Filesize

            44KB

          • memory/1080-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

            Filesize

            64KB

          • memory/1080-55-0x00000000714B1000-0x00000000714B3000-memory.dmp

            Filesize

            8KB

          • memory/1080-57-0x000000007249D000-0x00000000724A8000-memory.dmp

            Filesize

            44KB

          • memory/1172-67-0x0000000000920000-0x00000000009C4000-memory.dmp

            Filesize

            656KB

          • memory/1172-72-0x00000000007B0000-0x00000000007E2000-memory.dmp

            Filesize

            200KB

          • memory/1172-69-0x0000000000350000-0x000000000035C000-memory.dmp

            Filesize

            48KB

          • memory/1172-71-0x0000000004D40000-0x0000000004DA8000-memory.dmp

            Filesize

            416KB

          • memory/1292-83-0x0000000006A10000-0x0000000006B0F000-memory.dmp

            Filesize

            1020KB

          • memory/1292-93-0x0000000006C00000-0x0000000006CCE000-memory.dmp

            Filesize

            824KB

          • memory/1292-95-0x0000000006C00000-0x0000000006CCE000-memory.dmp

            Filesize

            824KB

          • memory/1600-87-0x0000000000080000-0x00000000000AB000-memory.dmp

            Filesize

            172KB

          • memory/1600-89-0x0000000001F50000-0x0000000002253000-memory.dmp

            Filesize

            3.0MB

          • memory/1600-86-0x0000000000230000-0x000000000024C000-memory.dmp

            Filesize

            112KB

          • memory/1600-90-0x0000000001D70000-0x0000000001E00000-memory.dmp

            Filesize

            576KB

          • memory/1600-94-0x0000000000080000-0x00000000000AB000-memory.dmp

            Filesize

            172KB