Analysis

  • max time kernel
    150s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    16/06/2022, 09:43

General

  • Target

    SR20220600525003,pdf.exe

  • Size

    236KB

  • MD5

    9bb6e1be7a871997359c19c8559cabf3

  • SHA1

    a3aff540f8c1af33ea7a215e303bdbe0a131c7c6

  • SHA256

    00468491177bab4d715685cc174538ff0a3c15cdf0b679c7d163b89e3b8d2421

  • SHA512

    ef65c69b16f636ba4ea8c48a51778643a6a4b437d36d481ba31e723b7c1d8645983ca83a91fdfca805a715300f1d42374ccf1c72fec93552a39a5dc408e0d23a

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

  • 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 4 IoCs
  • Adds policy Run key to start application 2 TTPs 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Suspicious use of SetThreadContext 3 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 50 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 11 IoCs
  • Suspicious use of WriteProcessMemory 27 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Drops file in Program Files directory
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2092
    • C:\Users\Admin\AppData\Local\Temp\SR20220600525003,pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\SR20220600525003,pdf.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4324
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"
        3⤵
          PID:4788
        • 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:4784
      • C:\Windows\SysWOW64\control.exe
        "C:\Windows\SysWOW64\control.exe"
        2⤵
        • Adds policy 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:2156
        • C:\Windows\SysWOW64\cmd.exe
          /c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"
          3⤵
            PID:32
          • 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:5076
            • C:\Windows\SysWOW64\cmd.exe
              /c copy "C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V
              3⤵
                PID:4780
              • C:\Program Files\Mozilla Firefox\Firefox.exe
                "C:\Program Files\Mozilla Firefox\Firefox.exe"
                3⤵
                  PID:2732
              • C:\Program Files (x86)\Adhkdulo\ThumbCacheht2tb2e.exe
                "C:\Program Files (x86)\Adhkdulo\ThumbCacheht2tb2e.exe"
                2⤵
                • Executes dropped EXE
                PID:1836

            Network

                  MITRE ATT&CK Enterprise v6

                  Replay Monitor

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                  Downloads

                  • C:\Program Files (x86)\Adhkdulo\ThumbCacheht2tb2e.exe

                    Filesize

                    45KB

                    MD5

                    70d838a7dc5b359c3f938a71fad77db0

                    SHA1

                    66b83eb16481c334719eed406bc58a3c2b910923

                    SHA256

                    e4dbdbf7888ea96f3f8aa5c4c7f2bcf6e57d724dd8194fe5f35b673c6ef724ea

                    SHA512

                    9c9a945db5b5e7ff8105bfe74578e6f00b5f707f7c3d8f1f1fb41553a6d0eab29cef026e77877a1ad6435fa7bc369141921442e1485f2b0894c6bbcbd7791034

                  • C:\Program Files (x86)\Adhkdulo\ThumbCacheht2tb2e.exe

                    Filesize

                    45KB

                    MD5

                    70d838a7dc5b359c3f938a71fad77db0

                    SHA1

                    66b83eb16481c334719eed406bc58a3c2b910923

                    SHA256

                    e4dbdbf7888ea96f3f8aa5c4c7f2bcf6e57d724dd8194fe5f35b673c6ef724ea

                    SHA512

                    9c9a945db5b5e7ff8105bfe74578e6f00b5f707f7c3d8f1f1fb41553a6d0eab29cef026e77877a1ad6435fa7bc369141921442e1485f2b0894c6bbcbd7791034

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

                    Filesize

                    40KB

                    MD5

                    b608d407fc15adea97c26936bc6f03f6

                    SHA1

                    953e7420801c76393902c0d6bb56148947e41571

                    SHA256

                    b281ce54125d4250a80f48fcc02a8eea53f2c35c3b726e2512c3d493da0013bf

                    SHA512

                    cc96ddf4bf90d6aaa9d86803cb2aa30cd8e9b295aee1bd5544b88aeab63dc60bb1d4641e846c9771bab51aabbfbcd984c6d3ee83b96f5b65d09c0841d464b9e4

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

                    Filesize

                    48KB

                    MD5

                    349e6eb110e34a08924d92f6b334801d

                    SHA1

                    bdfb289daff51890cc71697b6322aa4b35ec9169

                    SHA256

                    c9fd7be4579e4aa942e8c2b44ab10115fa6c2fe6afd0c584865413d9d53f3b2a

                    SHA512

                    2a635b815a5e117ea181ee79305ee1baf591459427acc5210d8c6c7e447be3513ead871c605eb3d32e4ab4111b2a335f26520d0ef8c1245a4af44e1faec44574

                  • memory/2092-147-0x0000000007920000-0x0000000007AA9000-memory.dmp

                    Filesize

                    1.5MB

                  • memory/2092-138-0x00000000077F0000-0x000000000791A000-memory.dmp

                    Filesize

                    1.2MB

                  • memory/2092-146-0x0000000007920000-0x0000000007AA9000-memory.dmp

                    Filesize

                    1.5MB

                  • memory/2156-143-0x0000000002D40000-0x000000000308A000-memory.dmp

                    Filesize

                    3.3MB

                  • memory/2156-140-0x00000000005B0000-0x00000000005D7000-memory.dmp

                    Filesize

                    156KB

                  • memory/2156-141-0x0000000000BC0000-0x0000000000BEB000-memory.dmp

                    Filesize

                    172KB

                  • memory/2156-144-0x0000000002AD0000-0x0000000002B60000-memory.dmp

                    Filesize

                    576KB

                  • memory/2156-145-0x0000000000BC0000-0x0000000000BEB000-memory.dmp

                    Filesize

                    172KB

                  • memory/4324-130-0x0000000000640000-0x000000000067C000-memory.dmp

                    Filesize

                    240KB

                  • memory/4784-136-0x0000000001A50000-0x0000000001D9A000-memory.dmp

                    Filesize

                    3.3MB

                  • memory/4784-137-0x0000000001420000-0x0000000001431000-memory.dmp

                    Filesize

                    68KB

                  • memory/4784-135-0x0000000000400000-0x000000000042B000-memory.dmp

                    Filesize

                    172KB

                  • memory/4784-133-0x0000000000400000-0x000000000042B000-memory.dmp

                    Filesize

                    172KB