Analysis

  • max time kernel
    145s
  • max time network
    139s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-10-2024 20:58

General

  • Target

    https://cdn.discordapp.com/attachments/1295127442817683547/1295127519028183191/test.exe?ex=670d84fe&is=670c337e&hm=0d595559eb02957c997413fdc1a25ae6c5f17c105473114dae648534ffbe7610&

Malware Config

Extracted

Family

skuld

C2

https://discord.com/api/webhooks/1284545435142459497/sZJdu71WF2vnQDFx5DbTlbAwGrlYn3vAhSJnEzrtKI0BnkbaxRVHjY9XeJFuMGr-racb

Signatures

  • Skuld stealer

    An info stealer written in Go lang.

  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • NTFS ADS 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 45 IoCs
  • Suspicious use of SendNotifyMessage 32 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument https://cdn.discordapp.com/attachments/1295127442817683547/1295127519028183191/test.exe?ex=670d84fe&is=670c337e&hm=0d595559eb02957c997413fdc1a25ae6c5f17c105473114dae648534ffbe7610&
    1⤵
    • Enumerates system info in registry
    • NTFS ADS
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:4264
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=92.0.4515.131 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=92.0.902.67 --initial-client-data=0xfc,0x100,0x104,0xd8,0x108,0x7fff764a46f8,0x7fff764a4708,0x7fff764a4718
      2⤵
        PID:2732
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=1468,8416480286047893389,4350797322363362204,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2104 /prefetch:2
        2⤵
          PID:3048
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --field-trial-handle=1468,8416480286047893389,4350797322363362204,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2340 /prefetch:3
          2⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:1232
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --field-trial-handle=1468,8416480286047893389,4350797322363362204,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2552 /prefetch:8
          2⤵
            PID:4944
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1468,8416480286047893389,4350797322363362204,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3268 /prefetch:1
            2⤵
              PID:1968
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1468,8416480286047893389,4350797322363362204,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3288 /prefetch:1
              2⤵
                PID:1460
              • C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=1468,8416480286047893389,4350797322363362204,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4988 /prefetch:8
                2⤵
                  PID:2180
                • C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=1468,8416480286047893389,4350797322363362204,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4988 /prefetch:8
                  2⤵
                  • Suspicious behavior: EnumeratesProcesses
                  PID:3708
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=edge_collections.mojom.CollectionsDataManager --field-trial-handle=1468,8416480286047893389,4350797322363362204,131072 --lang=en-US --service-sandbox-type=collections --mojo-platform-channel-handle=5216 /prefetch:8
                  2⤵
                    PID:4676
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1468,8416480286047893389,4350797322363362204,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=10 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5084 /prefetch:1
                    2⤵
                      PID:4368
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=chrome.mojom.UtilReadIcon --field-trial-handle=1468,8416480286047893389,4350797322363362204,131072 --lang=en-US --service-sandbox-type=icon_reader --mojo-platform-channel-handle=5948 /prefetch:8
                      2⤵
                        PID:4824
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=quarantine.mojom.Quarantine --field-trial-handle=1468,8416480286047893389,4350797322363362204,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5044 /prefetch:8
                        2⤵
                        • Suspicious behavior: EnumeratesProcesses
                        PID:3340
                      • C:\Users\Admin\Downloads\test.exe
                        "C:\Users\Admin\Downloads\test.exe"
                        2⤵
                        • Executes dropped EXE
                        • Suspicious use of AdjustPrivilegeToken
                        PID:1728
                        • C:\Windows\system32\attrib.exe
                          attrib +h +s C:\Users\Admin\Downloads\test.exe
                          3⤵
                          • Views/modifies file attributes
                          PID:720
                      • C:\Users\Admin\Downloads\test.exe
                        "C:\Users\Admin\Downloads\test.exe"
                        2⤵
                        • Executes dropped EXE
                        • Suspicious use of AdjustPrivilegeToken
                        PID:4088
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1468,8416480286047893389,4350797322363362204,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=13 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5396 /prefetch:1
                        2⤵
                          PID:3096
                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1468,8416480286047893389,4350797322363362204,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=14 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4132 /prefetch:1
                          2⤵
                            PID:4904
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1468,8416480286047893389,4350797322363362204,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=15 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5820 /prefetch:1
                            2⤵
                              PID:4860
                            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1468,8416480286047893389,4350797322363362204,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=16 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=2432 /prefetch:1
                              2⤵
                                PID:4600
                              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=1468,8416480286047893389,4350797322363362204,131072 --disable-gpu-sandbox --use-gl=disabled --gpu-vendor-id=4318 --gpu-device-id=140 --gpu-sub-system-id=0 --gpu-revision=0 --gpu-driver-version=10.0.19041.546 --gpu-preferences=UAAAAAAAAADoAAAQAAAAAAAAAAAAAAAAAABgAAAEAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=5244 /prefetch:2
                                2⤵
                                • Suspicious behavior: EnumeratesProcesses
                                PID:3012
                            • C:\Windows\System32\CompPkgSrv.exe
                              C:\Windows\System32\CompPkgSrv.exe -Embedding
                              1⤵
                                PID:4024
                              • C:\Windows\System32\CompPkgSrv.exe
                                C:\Windows\System32\CompPkgSrv.exe -Embedding
                                1⤵
                                  PID:1392
                                • C:\Windows\System32\rundll32.exe
                                  C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
                                  1⤵
                                    PID:4752

                                  Network

                                  MITRE ATT&CK Enterprise v15

                                  Replay Monitor

                                  Loading Replay Monitor...

                                  Downloads

                                  • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat

                                    Filesize

                                    152B

                                    MD5

                                    6960857d16aadfa79d36df8ebbf0e423

                                    SHA1

                                    e1db43bd478274366621a8c6497e270d46c6ed4f

                                    SHA256

                                    f40b812ce44e391423eb66602ac0af138a1e948aa8c4116045fef671ef21cd32

                                    SHA512

                                    6deb2a63055a643759dd0ae125fb2f68ec04a443dbf8b066a812b42352bbcfa4517382ed0910c190c986a864559c3453c772e153ee2e9432fb2de2e1e49ca7fe

                                  • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat

                                    Filesize

                                    152B

                                    MD5

                                    f426165d1e5f7df1b7a3758c306cd4ae

                                    SHA1

                                    59ef728fbbb5c4197600f61daec48556fec651c1

                                    SHA256

                                    b68dfc21866d0abe5c75d70acc54670421fa9b26baf98af852768676a901b841

                                    SHA512

                                    8d437fcb85acb0705bf080141e7a021740901248985a76299ea8c43e46ad78fb88c738322cf302f6a550caa5e79d85b36827e9b329b1094521b17cf638c015b6

                                  • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network Persistent State

                                    Filesize

                                    186B

                                    MD5

                                    094ab275342c45551894b7940ae9ad0d

                                    SHA1

                                    2e7ce26fe2eb9be641ae929d0c9cc0dfa26c018e

                                    SHA256

                                    ef1739b833a1048ee1bd55dcbac5b1397396faca1ad771f4d6c2fe58899495a3

                                    SHA512

                                    19d0c688dc1121569247111e45de732b2ab86c71aecdde34b157cfd1b25c53473ed3ade49a97f8cb2ddc4711be78fa26c9330887094e031e9a71bb5c29080b0d

                                  • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences

                                    Filesize

                                    6KB

                                    MD5

                                    ad7ee39cc42d7640b8f97321ce6b29af

                                    SHA1

                                    a9965ccb6a853c6c3d79f99a93f43b7bb524fe6d

                                    SHA256

                                    3d9ea127d6f7091046e96c7f80d6a5abad837864eff7d69142e27ed290697c5a

                                    SHA512

                                    6e58d968b120883fb678730b4e889cc3bb139b9133f31e260f5846850955df19d3fea96383346995a31953ab2ed79a932dec9a6cfe0775d0209a8461450cc1d3

                                  • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences

                                    Filesize

                                    6KB

                                    MD5

                                    d538e9906df98895050a6d62c26fa5ca

                                    SHA1

                                    e66f937ae26645df56d8c34d9a271b2bdad835d7

                                    SHA256

                                    6c3f8bfda832def6ee7632bb6ce75e1e8f33b4fcad364742c3f3c4fda2eb705e

                                    SHA512

                                    b9ad76fe69a599728fa0ab6d7da92af2342597628d0ae3b4072d971250a994eefa88da4861a28674dc78c68962360c2f3e2327edfacb977072bed039559edd38

                                  • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences

                                    Filesize

                                    6KB

                                    MD5

                                    8d010dccfa559598ffa595109051340e

                                    SHA1

                                    4db86f20dea939213caaf65dac51d3b3f801489a

                                    SHA256

                                    24dc75a2a971d5a1214d4cdacdf901a81594d007c310f781c7399517df4f657d

                                    SHA512

                                    dc57661ddac5a9c898713b9609dacb6a0c904e6f7d52d9d039d3b1f0f2b1aa465093cbe5a31d0badb6b8ca51cae2c7bebd6ac965d9b3e407d5f92d089b509901

                                  • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\data_reduction_proxy_leveldb\CURRENT

                                    Filesize

                                    16B

                                    MD5

                                    6752a1d65b201c13b62ea44016eb221f

                                    SHA1

                                    58ecf154d01a62233ed7fb494ace3c3d4ffce08b

                                    SHA256

                                    0861415cada612ea5834d56e2cf1055d3e63979b69eb71d32ae9ae394d8306cd

                                    SHA512

                                    9cfd838d3fb570b44fc3461623ab2296123404c6c8f576b0de0aabd9a6020840d4c9125eb679ed384170dbcaac2fa30dc7fa9ee5b77d6df7c344a0aa030e0389

                                  • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State

                                    Filesize

                                    10KB

                                    MD5

                                    bcc3685c80b3ce2053a5e97629018344

                                    SHA1

                                    52fc87df4d0d2e4c02b90950933377a885a7880d

                                    SHA256

                                    080152f93e79db7c218f66a1d32f2f50661f7736c6a01494a161364abe4aeb91

                                    SHA512

                                    9aed06f72c2302f9fb04b089238d36840e79b69f55b064368982b9a06aa8d4464faa4f0f56a1b8033124246766ae328016a968107b25252764f785c19c4e4016

                                  • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State

                                    Filesize

                                    10KB

                                    MD5

                                    5cea750b4d5f77cb3eadc75277e303ff

                                    SHA1

                                    6e87aa534810d6f8410b85accf997211424a2a98

                                    SHA256

                                    4087e7cdc27ec8065cf334ce394f975e6116b4af6b62261a7ecb89529b8e9b3b

                                    SHA512

                                    ccb8881acdc8104774f1798372ced89b4a4cf61fb94186e18adccd92f7c9b4bec2d6411ebb369822dd9dc6e1bcc9957ff2ac7ed1fca605a51c9a58da3d2c9d27

                                  • C:\Users\Admin\Downloads\Unconfirmed 852491.crdownload

                                    Filesize

                                    7.5MB

                                    MD5

                                    024120394dfc3e9add0c44cfdf071ab6

                                    SHA1

                                    3efc01703b833342a8f9432a7f32ed4ffb8319fc

                                    SHA256

                                    034c5b494dd9bb03a1d0bf56e6ac78893268aa56384fdcc9b5126813637afdc8

                                    SHA512

                                    efbc70e48cab6f8796dbba79a9a332e21094eeb9c700c76939060dce874976ce34fdff4cfc60e23a9e52e78131ee194a6ac96b5842181dc930cc8b7793269dea

                                  • \??\pipe\LOCAL\crashpad_4264_RRBSNWMGRMSDUCBC

                                    MD5

                                    d41d8cd98f00b204e9800998ecf8427e

                                    SHA1

                                    da39a3ee5e6b4b0d3255bfef95601890afd80709

                                    SHA256

                                    e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                                    SHA512

                                    cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

                                  • memory/1728-72-0x0000000000D10000-0x0000000001C4B000-memory.dmp

                                    Filesize

                                    15.2MB

                                  • memory/1728-76-0x0000000000D10000-0x0000000001C4B000-memory.dmp

                                    Filesize

                                    15.2MB

                                  • memory/4088-77-0x0000000000D10000-0x0000000001C4B000-memory.dmp

                                    Filesize

                                    15.2MB