Analysis

  • max time kernel
    104s
  • max time network
    104s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240419-en
  • resource tags

    arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    16/06/2024, 17:16

General

  • Target

    dll.exe

  • Size

    82KB

  • MD5

    9468c29751cb71821132a85046514acc

  • SHA1

    b752a90922804417327e3cc5375eea82f4d4c4a0

  • SHA256

    c93306914007b9770d6703be32691fc73a38f6373c74d30b6d0afd1906c1faeb

  • SHA512

    8a29161d0d0aacdadeef39f0760a0287fda89be622ae58959d7ff2801b04b476b69e2191e399b3900346e1c7ac799ef7e2bfa288768cc648cf114f6405ac79e7

  • SSDEEP

    1536:IwqAbo29p4HcTQviSuDFs26Ha8nJgRvqb5RNcfdblQu+x1zYOE0U4GrZW:NPpTQqtDW26Ha8Vb51JYOHU4AW

Malware Config

Extracted

Family

xworm

Attributes
  • Install_directory

    %Temp%

  • install_file

    Runtime Broker.exe

  • pastebin_url

    https://pastebin.com/raw/VT213gz9

  • telegram

    https://api.telegram.org/bot6557690107:AAGE33Usx8HvMpu0f9cIxbOjvXAd1gMz8t4/sendMessage?chat_id=1324649577

Signatures

  • Detect Xworm Payload 2 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Drops startup file 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 6 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies data under HKEY_USERS 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 26 IoCs
  • Suspicious use of SendNotifyMessage 12 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\dll.exe
    "C:\Users\Admin\AppData\Local\Temp\dll.exe"
    1⤵
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3036
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Runtime Broker" /tr "C:\Users\Admin\AppData\Local\Temp\Runtime Broker.exe"
      2⤵
      • Creates scheduled task(s)
      PID:3468
  • C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe"
    1⤵
    • Drops file in Windows directory
    • Enumerates system info in registry
    • Modifies data under HKEY_USERS
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:4552
    • C:\Program Files\Google\Chrome\Application\chrome.exe
      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=123.0.6312.106 --initial-client-data=0xfc,0x100,0x104,0xd8,0x108,0x7ff9492ecc40,0x7ff9492ecc4c,0x7ff9492ecc58
      2⤵
        PID:1836
      • C:\Program Files\Google\Chrome\Application\chrome.exe
        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --no-appcompat-clear --gpu-preferences=WAAAAAAAAADgAAAMAAAAAAAAAAAAAAAAAABgAAEAAAA4AAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGAAAAAAAAAAYAAAAAAAAAAgAAAAAAAAACAAAAAAAAAAIAAAAAAAAAA== --field-trial-handle=1832,i,3602984803534333577,15753549480559491059,262144 --variations-seed-version=20240418-180204.077000 --mojo-platform-channel-handle=1828 /prefetch:2
        2⤵
          PID:1312
        • C:\Program Files\Google\Chrome\Application\chrome.exe
          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --no-appcompat-clear --field-trial-handle=2056,i,3602984803534333577,15753549480559491059,262144 --variations-seed-version=20240418-180204.077000 --mojo-platform-channel-handle=2140 /prefetch:3
          2⤵
            PID:4084
          • C:\Program Files\Google\Chrome\Application\chrome.exe
            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=service --no-appcompat-clear --field-trial-handle=2184,i,3602984803534333577,15753549480559491059,262144 --variations-seed-version=20240418-180204.077000 --mojo-platform-channel-handle=2200 /prefetch:8
            2⤵
              PID:664
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --enable-chrome-cart --no-appcompat-clear --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --field-trial-handle=3144,i,3602984803534333577,15753549480559491059,262144 --variations-seed-version=20240418-180204.077000 --mojo-platform-channel-handle=3168 /prefetch:1
              2⤵
                PID:4892
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --enable-chrome-cart --no-appcompat-clear --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --field-trial-handle=3176,i,3602984803534333577,15753549480559491059,262144 --variations-seed-version=20240418-180204.077000 --mojo-platform-channel-handle=3316 /prefetch:1
                2⤵
                  PID:3148
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --enable-chrome-cart --no-appcompat-clear --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --field-trial-handle=3584,i,3602984803534333577,15753549480559491059,262144 --variations-seed-version=20240418-180204.077000 --mojo-platform-channel-handle=4444 /prefetch:1
                  2⤵
                    PID:1416
                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.ProcessorMetrics --lang=en-US --service-sandbox-type=none --no-appcompat-clear --field-trial-handle=4728,i,3602984803534333577,15753549480559491059,262144 --variations-seed-version=20240418-180204.077000 --mojo-platform-channel-handle=4740 /prefetch:8
                    2⤵
                      PID:3912
                  • C:\Program Files\Google\Chrome\Application\123.0.6312.106\elevation_service.exe
                    "C:\Program Files\Google\Chrome\Application\123.0.6312.106\elevation_service.exe"
                    1⤵
                      PID:1508
                    • C:\Windows\system32\svchost.exe
                      C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s NgcSvc
                      1⤵
                        PID:3596
                      • C:\Users\Admin\AppData\Local\Temp\Runtime Broker.exe
                        "C:\Users\Admin\AppData\Local\Temp\Runtime Broker.exe"
                        1⤵
                        • Executes dropped EXE
                        • Suspicious use of AdjustPrivilegeToken
                        PID:3652

                      Network

                      MITRE ATT&CK Enterprise v15

                      Replay Monitor

                      Loading Replay Monitor...

                      Downloads

                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\BrowsingTopicsState

                        Filesize

                        649B

                        MD5

                        ffb3debcd90b084db77a9cab2ea67028

                        SHA1

                        a608102b16a499d8911e95059b1e3c9e23dd9eef

                        SHA256

                        542f8cc04d90bc2cb6a7f7dace1ed9dfe61fa8a24af3c62d498f50d2835c3e89

                        SHA512

                        4fbd4eebe611ebac07982c3ddeb69d010cac7314b22343f41cdbfb60a3a11ee1f858997cbdaeaec5e9923145a59447219f7c5ebaea3fb462a79a16d2463d80d5

                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\SCT Auditing Pending Reports

                        Filesize

                        2B

                        MD5

                        d751713988987e9331980363e24189ce

                        SHA1

                        97d170e1550eee4afc0af065b78cda302a97674c

                        SHA256

                        4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945

                        SHA512

                        b25b294cb4deb69ea00a4c3cf3113904801b6015e5956bd019a8570b1fe1d6040e944ef3cdee16d0a46503ca6e659a25f21cf9ceddc13f352a3c98138c15d6af

                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences

                        Filesize

                        9KB

                        MD5

                        a4c1d6ee4a87d20374b2c9c9a514a088

                        SHA1

                        2fc9ff7b52af82a51936d40d2b4afcf892405fdf

                        SHA256

                        5f2b28d81b555ee407f867c2e82c267e643e478401678d76a83bf7ecf0197f71

                        SHA512

                        b54d775e26bc4afd5e22f060dd9ec0aea22ae7f36bc3bfee79151dd2599cf6a19992c84385e09d49c7101b09916df8a202f8a0bccf89fb3e93494cba115f5e92

                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences

                        Filesize

                        9KB

                        MD5

                        9b8f549de43f3f7a9cfd91fed3cfaf9e

                        SHA1

                        eaa6a5ed08d555fc2b9565b26c3ab1211d0e5190

                        SHA256

                        19171f373652cdbd07d0426ff1088c3058636c30e10683743f858ca87c67ae32

                        SHA512

                        d0dbaa03d99184e12be1288bc8c6eccc8f28fe17691c2f11ac298322a462dd242117d97e604f728ed2f9df438de2d5087eb92a1b7af0449e761614dfc8d0d2e5

                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences

                        Filesize

                        9KB

                        MD5

                        b66ddadfb7d86af3ca9c5115bd397e64

                        SHA1

                        94ae9ef58e3d68578add667b91fda1763aaa7bf0

                        SHA256

                        3f8c2f915bf35312a139e8af73d6e6b733b583aafa851ee415e927663ea8b4f0

                        SHA512

                        369f47b95493ace19b56d226062ebe5e73885af99fd19d0c9eb99a6b280f355ec30ff2e2df23921c2b7fafa61dbbb1718633fb9560238282d6ec26bd0831b3a6

                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State

                        Filesize

                        77KB

                        MD5

                        58d2a94b890654f96022e8b3d4e1cabf

                        SHA1

                        08bf3dd262454fc8dff81c310dbdb0ed2d1157e3

                        SHA256

                        4437fefa1b3694ce5a241c652144febf765ae8baf2b972a5e1093257764a0889

                        SHA512

                        13a1820d4c5aa66363da71f05047f2ae1d39ec8b16cba84cdd9d75d6e35f6e680ebe0bebbb08be75fcddb807b36fb13ab69c8d15e74ec8202a27989810ce2176

                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State

                        Filesize

                        77KB

                        MD5

                        a67b67fe06e1dcab586aa87da43a8d91

                        SHA1

                        3b9592245ceed2095ff4a4f611ae768219f47a8c

                        SHA256

                        9242b691108b72faf8969864dd9e03bd5d9a99b3f58e5996786aedfd75658407

                        SHA512

                        397076b8b1a1b5cba9e06e6b132c19c2193fdd2748b6bfe885504a22309f6490d67f2bc9f642ada18a440bc85363aedcb41acfbb16c554233dc5c27d3352b906

                      • C:\Users\Admin\AppData\Local\Temp\Runtime Broker.exe

                        Filesize

                        82KB

                        MD5

                        9468c29751cb71821132a85046514acc

                        SHA1

                        b752a90922804417327e3cc5375eea82f4d4c4a0

                        SHA256

                        c93306914007b9770d6703be32691fc73a38f6373c74d30b6d0afd1906c1faeb

                        SHA512

                        8a29161d0d0aacdadeef39f0760a0287fda89be622ae58959d7ff2801b04b476b69e2191e399b3900346e1c7ac799ef7e2bfa288768cc648cf114f6405ac79e7

                      • memory/3036-0-0x00007FF94CB73000-0x00007FF94CB75000-memory.dmp

                        Filesize

                        8KB

                      • memory/3036-7-0x00007FF94CB70000-0x00007FF94D632000-memory.dmp

                        Filesize

                        10.8MB

                      • memory/3036-2-0x00007FF94CB70000-0x00007FF94D632000-memory.dmp

                        Filesize

                        10.8MB

                      • memory/3036-1-0x0000000000CF0000-0x0000000000D0A000-memory.dmp

                        Filesize

                        104KB