Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    27-06-2022 14:14

General

  • Target

    shipping document.exe

  • Size

    521KB

  • MD5

    557350a46a849eb9ae8bc28a629bf3d5

  • SHA1

    8a773187553730b62bc9ba58457b8a97523f953e

  • SHA256

    576d080b4cab07bd5c3ef3e5d6a222b91744368ed837a3e56eb89772c1b5a1de

  • SHA512

    aee4d4881f1d20b7837f690291702c7ead7c6900f0a68fa29f6c5fbd06fc91d7d13f893b70543c172d3a3732d47262aeca3209af81cc396eddc3dd3412ccad64

Malware Config

Extracted

Family

xloader

Version

2.6

Campaign

pdrq

Decoy

welchsunstar.com

mppservicesllc.com

wiresofteflon.com

brabov.xyz

compnonoch.site

yourbuilderworks.com

iamsamirahman.com

eriqoes.com

eastudio.design

skyearth-est.com

teethfitness.com

razaancreates.com

shfbfs.com

joyfulbrokekids.com

kjbolden.com

howirep.com

deedeesmainecoons.website

e-powair.com

aheatea.com

shalfey0009.xyz

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

  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
  • Xloader Payload 4 IoCs
  • Adds policy Run key to start application 2 TTPs 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Looks for VMWare Tools registry key 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Maps connected drives based on registry 3 TTPs 2 IoCs

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

  • Suspicious use of SetThreadContext 3 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • 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 14 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs
  • System policy modification 1 TTPs 1 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:3140
    • C:\Users\Admin\AppData\Local\Temp\shipping document.exe
      "C:\Users\Admin\AppData\Local\Temp\shipping document.exe"
      2⤵
      • Looks for VirtualBox Guest Additions in registry
      • Looks for VMWare Tools registry key
      • Checks BIOS information in registry
      • Checks computer location settings
      • Maps connected drives based on registry
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1480
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\ylJHrC.exe"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:5012
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ylJHrC" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD12F.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:4008
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of AdjustPrivilegeToken
        PID:4344
    • C:\Windows\SysWOW64\cscript.exe
      "C:\Windows\SysWOW64\cscript.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
      • System policy modification
      PID:4220
      • C:\Windows\SysWOW64\cmd.exe
        /c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
        3⤵
          PID:3248
        • 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:4948
          • 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:3972
            • C:\Program Files\Mozilla Firefox\Firefox.exe
              "C:\Program Files\Mozilla Firefox\Firefox.exe"
              3⤵
                PID:4456
            • C:\Program Files (x86)\Irfidt\plm0kfldx44y8l.exe
              "C:\Program Files (x86)\Irfidt\plm0kfldx44y8l.exe"
              2⤵
              • Executes dropped EXE
              PID:2224

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Program Files (x86)\Irfidt\plm0kfldx44y8l.exe
            Filesize

            44KB

            MD5

            9d352bc46709f0cb5ec974633a0c3c94

            SHA1

            1969771b2f022f9a86d77ac4d4d239becdf08d07

            SHA256

            2c1eeb7097023c784c2bd040a2005a5070ed6f3a4abf13929377a9e39fab1390

            SHA512

            13c714244ec56beeb202279e4109d59c2a43c3cf29f90a374a751c04fd472b45228ca5a0178f41109ed863dbd34e0879e4a21f5e38ae3d89559c57e6be990a9b

          • C:\Program Files (x86)\Irfidt\plm0kfldx44y8l.exe
            Filesize

            44KB

            MD5

            9d352bc46709f0cb5ec974633a0c3c94

            SHA1

            1969771b2f022f9a86d77ac4d4d239becdf08d07

            SHA256

            2c1eeb7097023c784c2bd040a2005a5070ed6f3a4abf13929377a9e39fab1390

            SHA512

            13c714244ec56beeb202279e4109d59c2a43c3cf29f90a374a751c04fd472b45228ca5a0178f41109ed863dbd34e0879e4a21f5e38ae3d89559c57e6be990a9b

          • 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

          • C:\Users\Admin\AppData\Local\Temp\tmpD12F.tmp
            Filesize

            1KB

            MD5

            9e796db45b61ec401e163373618084fb

            SHA1

            e1479e399c55abc050c8e14ae4b7d2e729f3238a

            SHA256

            2d86d853a823336e823f28c776ae135ac7005c37b64c336df53c0c18c8f84095

            SHA512

            57ac29d85725009316312a8909b851e99b086a25ebfbc2660547e4a5db18f44b70d2033830a5f6d7676905e4c4fca67b7b8cb8b8b7e260741bd88afc4167cd6c

          • memory/1480-131-0x00000000051A0000-0x0000000005744000-memory.dmp
            Filesize

            5.6MB

          • memory/1480-132-0x0000000004C90000-0x0000000004D22000-memory.dmp
            Filesize

            584KB

          • memory/1480-133-0x0000000004C10000-0x0000000004C1A000-memory.dmp
            Filesize

            40KB

          • memory/1480-134-0x00000000085D0000-0x000000000866C000-memory.dmp
            Filesize

            624KB

          • memory/1480-135-0x0000000008900000-0x0000000008966000-memory.dmp
            Filesize

            408KB

          • memory/1480-130-0x0000000000330000-0x00000000003B8000-memory.dmp
            Filesize

            544KB

          • memory/2224-178-0x0000000004AD0000-0x0000000004B0C000-memory.dmp
            Filesize

            240KB

          • memory/2224-174-0x0000000000000000-mapping.dmp
          • memory/2224-177-0x00000000002F0000-0x00000000002FE000-memory.dmp
            Filesize

            56KB

          • memory/3140-149-0x0000000002690000-0x0000000002753000-memory.dmp
            Filesize

            780KB

          • memory/3140-168-0x0000000007B60000-0x0000000007CA2000-memory.dmp
            Filesize

            1.3MB

          • memory/3140-169-0x0000000007B60000-0x0000000007CA2000-memory.dmp
            Filesize

            1.3MB

          • memory/3248-161-0x0000000000000000-mapping.dmp
          • memory/3972-172-0x0000000000000000-mapping.dmp
          • memory/4008-137-0x0000000000000000-mapping.dmp
          • memory/4220-167-0x0000000000700000-0x000000000072B000-memory.dmp
            Filesize

            172KB

          • memory/4220-158-0x0000000000000000-mapping.dmp
          • memory/4220-166-0x0000000002600000-0x0000000002690000-memory.dmp
            Filesize

            576KB

          • memory/4220-165-0x00000000027A0000-0x0000000002AEA000-memory.dmp
            Filesize

            3.3MB

          • memory/4220-160-0x0000000000700000-0x000000000072B000-memory.dmp
            Filesize

            172KB

          • memory/4220-159-0x0000000001000000-0x0000000001027000-memory.dmp
            Filesize

            156KB

          • memory/4344-142-0x0000000000400000-0x000000000042B000-memory.dmp
            Filesize

            172KB

          • memory/4344-148-0x0000000001550000-0x0000000001561000-memory.dmp
            Filesize

            68KB

          • memory/4344-141-0x0000000000000000-mapping.dmp
          • memory/4344-146-0x0000000000400000-0x000000000042B000-memory.dmp
            Filesize

            172KB

          • memory/4344-147-0x00000000015A0000-0x00000000018EA000-memory.dmp
            Filesize

            3.3MB

          • memory/4948-170-0x0000000000000000-mapping.dmp
          • memory/5012-150-0x0000000006510000-0x000000000652E000-memory.dmp
            Filesize

            120KB

          • memory/5012-162-0x0000000007A40000-0x0000000007A4E000-memory.dmp
            Filesize

            56KB

          • memory/5012-153-0x0000000006AB0000-0x0000000006ACE000-memory.dmp
            Filesize

            120KB

          • memory/5012-152-0x0000000070D70000-0x0000000070DBC000-memory.dmp
            Filesize

            304KB

          • memory/5012-151-0x00000000074C0000-0x00000000074F2000-memory.dmp
            Filesize

            200KB

          • memory/5012-157-0x0000000007A90000-0x0000000007B26000-memory.dmp
            Filesize

            600KB

          • memory/5012-163-0x0000000007B50000-0x0000000007B6A000-memory.dmp
            Filesize

            104KB

          • memory/5012-164-0x0000000007B30000-0x0000000007B38000-memory.dmp
            Filesize

            32KB

          • memory/5012-154-0x0000000007E60000-0x00000000084DA000-memory.dmp
            Filesize

            6.5MB

          • memory/5012-155-0x0000000007810000-0x000000000782A000-memory.dmp
            Filesize

            104KB

          • memory/5012-144-0x0000000005E20000-0x0000000005E86000-memory.dmp
            Filesize

            408KB

          • memory/5012-143-0x0000000005430000-0x0000000005452000-memory.dmp
            Filesize

            136KB

          • memory/5012-156-0x0000000007880000-0x000000000788A000-memory.dmp
            Filesize

            40KB

          • memory/5012-140-0x00000000055C0000-0x0000000005BE8000-memory.dmp
            Filesize

            6.2MB

          • memory/5012-138-0x0000000002C00000-0x0000000002C36000-memory.dmp
            Filesize

            216KB

          • memory/5012-136-0x0000000000000000-mapping.dmp