Resubmissions

14-03-2022 13:53

220314-q7ffkagbb2 10

14-03-2022 13:10

220314-qev1jshfal 10

14-03-2022 13:10

220314-qejmhsffd9 1

14-03-2022 13:09

220314-qeba5sffd4 1

14-03-2022 13:09

220314-qdstsshegp 1

25-02-2022 17:41

220225-v9edhaabek 10

25-02-2022 17:33

220225-v49x8aabcr 10

25-02-2022 17:26

220225-vz7masggh9 10

25-02-2022 17:01

220225-vjlpwsggd5 10

Analysis

  • max time kernel
    365s
  • max time network
    365s
  • platform
    windows10_x64
  • resource
    win10-20220223-en
  • submitted
    25-02-2022 17:33

General

  • Target

    INV21029.exe

  • Size

    577KB

  • MD5

    740dd9c14dea0b98df6ad434abfe789e

  • SHA1

    cbec4d898e68c12fb7dcaddb17d0aca16e8e0e7b

  • SHA256

    35295675b2fbd8ff9900336325e3324270f083705fd0cf51f4ef28763430cdd6

  • SHA512

    66041e42091e83889a6da93c4242a01a0a3122774dc2db8baf909fb0ec6b0d6e847183ac92a24f2ca99f99de7dd4abddddda4a908887f354e3a333202bc0a66e

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

ahc8

Decoy

192451.com

wwwripostes.net

sirikhalsalaw.com

bitterbaybay.com

stella-scrubs.com

almanecermezcal.com

goodgood.online

translate-now.online

sincerefilm.com

quadrantforensics.com

johnfrenchart.com

plick-click.com

alnileen.com

tghi.xyz

172711.com

maymakita.com

punnyaseva.com

ukash-online.com

sho-yururi-blog.com

hebergement-solidaire.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)

  • suricata: ET MALWARE FormBook CnC Checkin (POST) M2

    suricata: ET MALWARE FormBook CnC Checkin (POST) M2

  • Xloader Payload 2 IoCs
  • Executes dropped EXE 3 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 4 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Modifies registry class 1 IoCs
  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: LoadsDriver 64 IoCs
  • Suspicious behavior: MapViewOfSection 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 54 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of WriteProcessMemory 32 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:2284
    • C:\Users\Admin\AppData\Local\Temp\INV21029.exe
      "C:\Users\Admin\AppData\Local\Temp\INV21029.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3708
      • C:\Users\Admin\AppData\Local\Temp\reqbqonire.exe
        C:\Users\Admin\AppData\Local\Temp\reqbqonire.exe C:\Users\Admin\AppData\Local\Temp\truuumm
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3732
        • C:\Users\Admin\AppData\Local\Temp\reqbqonire.exe
          C:\Users\Admin\AppData\Local\Temp\reqbqonire.exe C:\Users\Admin\AppData\Local\Temp\truuumm
          4⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of AdjustPrivilegeToken
          PID:2420
    • C:\Windows\SysWOW64\raserver.exe
      "C:\Windows\SysWOW64\raserver.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:4060
      • C:\Windows\SysWOW64\cmd.exe
        /c del "C:\Users\Admin\AppData\Local\Temp\reqbqonire.exe"
        3⤵
          PID:1328
        • C:\Windows\SysWOW64\cmd.exe
          /c copy "C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V
          3⤵
            PID:1220
          • C:\Program Files\Mozilla Firefox\Firefox.exe
            "C:\Program Files\Mozilla Firefox\Firefox.exe"
            3⤵
              PID:3732
          • C:\Windows\system32\cmd.exe
            "C:\Windows\system32\cmd.exe"
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1808
            • C:\Windows\system32\net.exe
              net user test /add
              3⤵
              • Suspicious use of WriteProcessMemory
              PID:3120
              • C:\Windows\system32\net1.exe
                C:\Windows\system32\net1 user test /add
                4⤵
                  PID:2364
            • C:\Windows\system32\taskmgr.exe
              "C:\Windows\system32\taskmgr.exe" /4
              2⤵
              • Drops file in Windows directory
              • Checks SCSI registry key(s)
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of FindShellTrayWindow
              • Suspicious use of SendNotifyMessage
              PID:3400
            • C:\Program Files (x86)\Nvpx4any0\altux5xnbq8.exe
              "C:\Program Files (x86)\Nvpx4any0\altux5xnbq8.exe"
              2⤵
              • Executes dropped EXE
              PID:2352
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 2352 -s 568
                3⤵
                • Program crash
                • Suspicious use of AdjustPrivilegeToken
                PID:3252

          Network

          MITRE ATT&CK Matrix ATT&CK v6

          Persistence

          Registry Run Keys / Startup Folder

          1
          T1060

          Defense Evasion

          Modify Registry

          2
          T1112

          Credential Access

          Credentials in Files

          1
          T1081

          Discovery

          System Information Discovery

          3
          T1082

          Query Registry

          2
          T1012

          Peripheral Device Discovery

          1
          T1120

          Collection

          Data from Local System

          1
          T1005

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Program Files (x86)\Nvpx4any0\altux5xnbq8.exe
            MD5

            b83e207b80ad38dccaf5b38b9a64cf97

            SHA1

            a28cba27c256021902f8150d47ced82565bb8558

            SHA256

            97658ad1a093a80ac9f16949b1971079bbdddc8cdd3515bb681b821203794741

            SHA512

            190ee397a064ca8caf6e0625a79ab764d7bae84007790b2157804f9ae2f16454d430c17402b4d7df76ce5cdea24b3f56d2298c56a5a38215fd9a65fb8e68e0a6

          • C:\Program Files (x86)\Nvpx4any0\altux5xnbq8.exe
            MD5

            b83e207b80ad38dccaf5b38b9a64cf97

            SHA1

            a28cba27c256021902f8150d47ced82565bb8558

            SHA256

            97658ad1a093a80ac9f16949b1971079bbdddc8cdd3515bb681b821203794741

            SHA512

            190ee397a064ca8caf6e0625a79ab764d7bae84007790b2157804f9ae2f16454d430c17402b4d7df76ce5cdea24b3f56d2298c56a5a38215fd9a65fb8e68e0a6

          • C:\Users\Admin\AppData\Local\Temp\1djuqculeikkmhtz2x2
            MD5

            199f72b6103b1ad570f3a810d06c332a

            SHA1

            43b9341301394deec3c674cf98fc3c6cc629ee2b

            SHA256

            a61bbd1659ba2338fe6e4df411d709834285b54991c403ba07bc9459af5320fc

            SHA512

            0ce6be58193b0bcdccd003218597ce8f6bd0de35563c32d28c2e111903445f12ece5fa0a536dd2b79153b9c265c10a6ec17f8ef67b11edb95d155c0f502adeb5

          • C:\Users\Admin\AppData\Local\Temp\DB1
            MD5

            b608d407fc15adea97c26936bc6f03f6

            SHA1

            953e7420801c76393902c0d6bb56148947e41571

            SHA256

            b281ce54125d4250a80f48fcc02a8eea53f2c35c3b726e2512c3d493da0013bf

            SHA512

            cc96ddf4bf90d6aaa9d86803cb2aa30cd8e9b295aee1bd5544b88aeab63dc60bb1d4641e846c9771bab51aabbfbcd984c6d3ee83b96f5b65d09c0841d464b9e4

          • C:\Users\Admin\AppData\Local\Temp\reqbqonire.exe
            MD5

            b83e207b80ad38dccaf5b38b9a64cf97

            SHA1

            a28cba27c256021902f8150d47ced82565bb8558

            SHA256

            97658ad1a093a80ac9f16949b1971079bbdddc8cdd3515bb681b821203794741

            SHA512

            190ee397a064ca8caf6e0625a79ab764d7bae84007790b2157804f9ae2f16454d430c17402b4d7df76ce5cdea24b3f56d2298c56a5a38215fd9a65fb8e68e0a6

          • C:\Users\Admin\AppData\Local\Temp\reqbqonire.exe
            MD5

            b83e207b80ad38dccaf5b38b9a64cf97

            SHA1

            a28cba27c256021902f8150d47ced82565bb8558

            SHA256

            97658ad1a093a80ac9f16949b1971079bbdddc8cdd3515bb681b821203794741

            SHA512

            190ee397a064ca8caf6e0625a79ab764d7bae84007790b2157804f9ae2f16454d430c17402b4d7df76ce5cdea24b3f56d2298c56a5a38215fd9a65fb8e68e0a6

          • C:\Users\Admin\AppData\Local\Temp\reqbqonire.exe
            MD5

            b83e207b80ad38dccaf5b38b9a64cf97

            SHA1

            a28cba27c256021902f8150d47ced82565bb8558

            SHA256

            97658ad1a093a80ac9f16949b1971079bbdddc8cdd3515bb681b821203794741

            SHA512

            190ee397a064ca8caf6e0625a79ab764d7bae84007790b2157804f9ae2f16454d430c17402b4d7df76ce5cdea24b3f56d2298c56a5a38215fd9a65fb8e68e0a6

          • C:\Users\Admin\AppData\Local\Temp\truuumm
            MD5

            0a99632c69bc8d3fe6231d0a50bff785

            SHA1

            ad875f4428f17d0474be5ee8667158bd14d10f22

            SHA256

            0a11eae20268581b0ad9c67defaf1a4dc4bf183ede922eca10c5da698eec8078

            SHA512

            93905216a40975163edfcc94cf3c55c40a27e4cf7143d028ef6c5caead6ceaaa1504bd4c5a05d043d61be3df08991ea7e1e8c98cdfafd9d8744ccacdc5d7de2f

          • memory/2284-129-0x0000000004D20000-0x0000000004EA0000-memory.dmp
            Filesize

            1.5MB

          • memory/2284-124-0x0000000004C50000-0x0000000004D1C000-memory.dmp
            Filesize

            816KB

          • memory/2420-123-0x0000000000DD0000-0x0000000000DE1000-memory.dmp
            Filesize

            68KB

          • memory/2420-121-0x00000000009B0000-0x0000000000CD0000-memory.dmp
            Filesize

            3.1MB

          • memory/2420-122-0x000000000041D000-0x000000000041E000-memory.dmp
            Filesize

            4KB

          • memory/2420-118-0x0000000000400000-0x0000000000429000-memory.dmp
            Filesize

            164KB

          • memory/4060-126-0x0000000003000000-0x0000000003029000-memory.dmp
            Filesize

            164KB

          • memory/4060-127-0x0000000004530000-0x0000000004850000-memory.dmp
            Filesize

            3.1MB

          • memory/4060-128-0x00000000048E0000-0x0000000004970000-memory.dmp
            Filesize

            576KB

          • memory/4060-125-0x0000000000C90000-0x0000000000CAF000-memory.dmp
            Filesize

            124KB