Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21/06/2022, 10:21

General

  • Target

    networksec.exe

  • Size

    467KB

  • MD5

    0a7ee72e2b57214272b36a91835ece31

  • SHA1

    4f8ba6b8eee9c2f612cd046b34905cd110ec1b12

  • SHA256

    25773608894ed7dced5dd50dc02483ffdd6d9ee3d79333aa8292c5d2a2586e21

  • SHA512

    22d253e97694d8c62bd188c3ce9008445b3e41389672049ff8d768746fff3fba20a5025ca535b804a9bf976435cb7836e8d728009327c55ada359d2ee35c9f5b

Malware Config

Extracted

Family

xloader

Version

2.6

Campaign

a2es

Decoy

glutenfreebahrain.com

sportrid.com

js-films.com

cie-revolver.com

outsourcinginstitutebd.com

roboticsdatascience.com

tebrunk.com

needgreatwork.com

df1b8j2iwbl33n.life

voluum-training.com

cherna-roza.com

xiyouap.com

bluefiftyfoundation.com

angolettomc.com

yhcp225.com

keondredejawn.com

ifeelsilky.com

coraorganizing.com

smartmindstutorials.com

tanphucuong.info

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
  • 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 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 40 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of WriteProcessMemory
    PID:672
    • C:\Users\Admin\AppData\Local\Temp\networksec.exe
      "C:\Users\Admin\AppData\Local\Temp\networksec.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:4052
      • C:\Users\Admin\AppData\Local\Temp\networksec.exe
        "C:\Users\Admin\AppData\Local\Temp\networksec.exe"
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of AdjustPrivilegeToken
        PID:1096
    • C:\Windows\SysWOW64\colorcpl.exe
      "C:\Windows\SysWOW64\colorcpl.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:4680
      • C:\Windows\SysWOW64\cmd.exe
        /c del "C:\Users\Admin\AppData\Local\Temp\networksec.exe"
        3⤵
          PID:444
        • 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:2404
          • 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:1148
            • C:\Program Files\Mozilla Firefox\Firefox.exe
              "C:\Program Files\Mozilla Firefox\Firefox.exe"
              3⤵
                PID:1664

          Network

                MITRE ATT&CK Enterprise v6

                Replay Monitor

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                Downloads

                • 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/672-141-0x0000000008E70000-0x000000000900C000-memory.dmp

                  Filesize

                  1.6MB

                • memory/672-150-0x0000000003360000-0x000000000345A000-memory.dmp

                  Filesize

                  1000KB

                • memory/672-148-0x0000000003360000-0x000000000345A000-memory.dmp

                  Filesize

                  1000KB

                • memory/1096-136-0x0000000000400000-0x000000000042B000-memory.dmp

                  Filesize

                  172KB

                • memory/1096-139-0x0000000001710000-0x0000000001A5A000-memory.dmp

                  Filesize

                  3.3MB

                • memory/1096-140-0x00000000016B0000-0x00000000016C1000-memory.dmp

                  Filesize

                  68KB

                • memory/1096-138-0x0000000000400000-0x000000000042B000-memory.dmp

                  Filesize

                  172KB

                • memory/4052-133-0x0000000005050000-0x000000000505A000-memory.dmp

                  Filesize

                  40KB

                • memory/4052-130-0x0000000000490000-0x000000000050C000-memory.dmp

                  Filesize

                  496KB

                • memory/4052-131-0x0000000005390000-0x0000000005934000-memory.dmp

                  Filesize

                  5.6MB

                • memory/4052-132-0x0000000004EA0000-0x0000000004F32000-memory.dmp

                  Filesize

                  584KB

                • memory/4052-134-0x0000000008760000-0x00000000087FC000-memory.dmp

                  Filesize

                  624KB

                • memory/4680-149-0x0000000000F00000-0x0000000000F2B000-memory.dmp

                  Filesize

                  172KB

                • memory/4680-147-0x0000000002F60000-0x0000000002FF0000-memory.dmp

                  Filesize

                  576KB

                • memory/4680-145-0x0000000000F00000-0x0000000000F2B000-memory.dmp

                  Filesize

                  172KB

                • memory/4680-146-0x0000000003140000-0x000000000348A000-memory.dmp

                  Filesize

                  3.3MB

                • memory/4680-144-0x0000000000FB0000-0x0000000000FC9000-memory.dmp

                  Filesize

                  100KB