Analysis

  • max time kernel
    555s
  • max time network
    487s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19-10-2024 22:49

General

  • Target

    https://cdn.discordapp.com/attachments/1282846872087695425/1297330692757258250/RENAMEME.exe?ex=671588dc&is=6714375c&hm=2662ab40830d84d3a1db48db166ed741fcc403cc74e7c70dc7eb36f2d334591e&

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 5 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • UPX packed file 8 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 5 IoCs
  • Suspicious use of FindShellTrayWindow 37 IoCs
  • Suspicious use of SendNotifyMessage 24 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Views/modifies file attributes 1 TTPs 5 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/1282846872087695425/1297330692757258250/RENAMEME.exe?ex=671588dc&is=6714375c&hm=2662ab40830d84d3a1db48db166ed741fcc403cc74e7c70dc7eb36f2d334591e&
    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:4608
    • 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,0x100,0x104,0xd8,0x108,0x7fff575746f8,0x7fff57574708,0x7fff57574718
      2⤵
        PID:2772
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2056,10447150106399790049,1231450129990392071,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2072 /prefetch:2
        2⤵
          PID:4804
        • 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=2056,10447150106399790049,1231450129990392071,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2328 /prefetch:3
          2⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:3628
        • 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=2056,10447150106399790049,1231450129990392071,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2744 /prefetch:8
          2⤵
            PID:8
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2056,10447150106399790049,1231450129990392071,131072 --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=3324 /prefetch:1
            2⤵
              PID:1748
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2056,10447150106399790049,1231450129990392071,131072 --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=3352 /prefetch:1
              2⤵
                PID:2088
              • 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=2056,10447150106399790049,1231450129990392071,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5024 /prefetch:8
                2⤵
                  PID:3048
                • 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=2056,10447150106399790049,1231450129990392071,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5024 /prefetch:8
                  2⤵
                  • Suspicious behavior: EnumeratesProcesses
                  PID:2540
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2056,10447150106399790049,1231450129990392071,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5096 /prefetch:1
                  2⤵
                    PID:1892
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2056,10447150106399790049,1231450129990392071,131072 --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=9 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5112 /prefetch:1
                    2⤵
                      PID:1688
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2056,10447150106399790049,1231450129990392071,131072 --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=5664 /prefetch:1
                      2⤵
                        PID:4624
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2056,10447150106399790049,1231450129990392071,131072 --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=11 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5692 /prefetch:1
                        2⤵
                          PID:4492
                        • 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=2056,10447150106399790049,1231450129990392071,131072 --lang=en-US --service-sandbox-type=collections --mojo-platform-channel-handle=5384 /prefetch:8
                          2⤵
                            PID:4816
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2056,10447150106399790049,1231450129990392071,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=14 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5656 /prefetch:1
                            2⤵
                              PID:2720
                            • 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=2056,10447150106399790049,1231450129990392071,131072 --lang=en-US --service-sandbox-type=icon_reader --mojo-platform-channel-handle=6280 /prefetch:8
                              2⤵
                                PID:4392
                              • 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=2056,10447150106399790049,1231450129990392071,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5904 /prefetch:8
                                2⤵
                                • Suspicious behavior: EnumeratesProcesses
                                PID:5216
                              • C:\Users\Admin\Downloads\RENAMEME.exe
                                "C:\Users\Admin\Downloads\RENAMEME.exe"
                                2⤵
                                • Executes dropped EXE
                                • Adds Run key to start application
                                • Suspicious use of AdjustPrivilegeToken
                                PID:5372
                                • C:\Windows\system32\attrib.exe
                                  attrib +h +s C:\Users\Admin\Downloads\RENAMEME.exe
                                  3⤵
                                  • Views/modifies file attributes
                                  PID:5568
                              • C:\Users\Admin\Downloads\RENAMEME.exe
                                "C:\Users\Admin\Downloads\RENAMEME.exe"
                                2⤵
                                • Executes dropped EXE
                                • Adds Run key to start application
                                • Suspicious use of AdjustPrivilegeToken
                                PID:5776
                                • C:\Windows\system32\attrib.exe
                                  attrib +h +s C:\Users\Admin\Downloads\RENAMEME.exe
                                  3⤵
                                  • Views/modifies file attributes
                                  PID:5844
                              • C:\Users\Admin\Downloads\RENAMEME.exe
                                "C:\Users\Admin\Downloads\RENAMEME.exe"
                                2⤵
                                • Executes dropped EXE
                                • Adds Run key to start application
                                • Suspicious use of AdjustPrivilegeToken
                                PID:5876
                                • C:\Windows\system32\attrib.exe
                                  attrib +h +s C:\Users\Admin\Downloads\RENAMEME.exe
                                  3⤵
                                  • Views/modifies file attributes
                                  PID:6000
                              • C:\Users\Admin\Downloads\RENAMEME.exe
                                "C:\Users\Admin\Downloads\RENAMEME.exe"
                                2⤵
                                • Executes dropped EXE
                                • Adds Run key to start application
                                • Suspicious use of AdjustPrivilegeToken
                                PID:4312
                                • C:\Windows\system32\attrib.exe
                                  attrib +h +s C:\Users\Admin\Downloads\RENAMEME.exe
                                  3⤵
                                  • Views/modifies file attributes
                                  PID:4564
                              • C:\Users\Admin\Downloads\RENAMEME.exe
                                "C:\Users\Admin\Downloads\RENAMEME.exe"
                                2⤵
                                • Executes dropped EXE
                                • Suspicious use of AdjustPrivilegeToken
                                PID:5240
                                • C:\Windows\system32\attrib.exe
                                  attrib +h +s C:\Users\Admin\Downloads\RENAMEME.exe
                                  3⤵
                                  • Views/modifies file attributes
                                  PID:5248
                              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2056,10447150106399790049,1231450129990392071,131072 --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=4688 /prefetch:2
                                2⤵
                                • Suspicious behavior: EnumeratesProcesses
                                PID:980
                            • C:\Windows\System32\CompPkgSrv.exe
                              C:\Windows\System32\CompPkgSrv.exe -Embedding
                              1⤵
                                PID:2280
                              • C:\Windows\System32\CompPkgSrv.exe
                                C:\Windows\System32\CompPkgSrv.exe -Embedding
                                1⤵
                                  PID:628

                                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

                                  5KB

                                  MD5

                                  1fb3f5fec73320b028b24e9f11007c50

                                  SHA1

                                  4bf6e350079e1efea0266bfcc0de4fc8948abb79

                                  SHA256

                                  36031f7e8fc9acdbad912fa631331f06b7d4bea2da145f3cc9b1210ee21285ca

                                  SHA512

                                  33dccb96e5642cbfc15cc057d7d5af7802974ccdc50f8100c6360385421e5c971ac2d2831646ea512a893976c698ce667bb18781539912545d13b3248d650753

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

                                  Filesize

                                  6KB

                                  MD5

                                  ec1058dda2c6671b4cbb6863ec24f134

                                  SHA1

                                  b0749be2e7ab71521723197805e458caff45bd1a

                                  SHA256

                                  80690d4b57cfd8237f7d3abf9139a42c242e79b446abe5d39a85309a69b47fc4

                                  SHA512

                                  88c5ae0520646f7790ea4b63b3c0f8d584dd4b8ba8ff585da679217acb3f9542da4017405a9e121432f85cbc96e391653fbb5c98c375c27cf51973afe8957c76

                                • 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

                                  11KB

                                  MD5

                                  1fa375815fd90e17608052e653d88463

                                  SHA1

                                  60d8a37a6745db5786254fde490947f5824d8df7

                                  SHA256

                                  c21bbcea4cc324ae501f2160a73097b3f188cfc97d98ff7ad26e3fe3b08cfba4

                                  SHA512

                                  2e65e28340225c639c6c2f7ab7acc8f6ddc080787cd63a7873efefd583324bf02ed93a913d93ada3f80b115e70d2d3555d1aabadefac7e6dd1fb0c7f4c297ef2

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

                                  Filesize

                                  11KB

                                  MD5

                                  b84c6a5842b74389d961a8ddb431a20f

                                  SHA1

                                  29fb01b563562332452b0e3d97921335938a9c25

                                  SHA256

                                  66f3bcce78d2d741434f9f01028f752a5bc98d1d7402e09fb03425b391c6d7c8

                                  SHA512

                                  276389fe1eb83dc5357e54f3286257ae2e45cb53fdd55fa500be41da3c8545a734142c7e49fdba149601ffa5b202ad7123b647528c89e8630d588be5e6a491e7

                                • C:\Users\Admin\Downloads\Unconfirmed 108902.crdownload

                                  Filesize

                                  7.5MB

                                  MD5

                                  bc7955bff8c68d8c7592ea25570e4dfc

                                  SHA1

                                  6f64d4c526c85ad434c209dfa9f6162707603432

                                  SHA256

                                  e51a003857a49867085cbc9397e7655c55bf6892df4e829059d23070019cd4b8

                                  SHA512

                                  2b1c68f0dc0d5689125f71fb9b7279225acf276dd3949512f2ef957a93610fc13ee820ed1f23f1db099e7d4fcd8006f924cc5ef0b38a874dd8fabae8f2e2aaa4

                                • \??\pipe\LOCAL\crashpad_4608_JJKLGXCABAEWLGQA

                                  MD5

                                  d41d8cd98f00b204e9800998ecf8427e

                                  SHA1

                                  da39a3ee5e6b4b0d3255bfef95601890afd80709

                                  SHA256

                                  e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                                  SHA512

                                  cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

                                • memory/4312-103-0x0000000000B10000-0x0000000001A4B000-memory.dmp

                                  Filesize

                                  15.2MB

                                • memory/5240-105-0x0000000000B10000-0x0000000001A4B000-memory.dmp

                                  Filesize

                                  15.2MB

                                • memory/5372-71-0x0000000000160000-0x000000000109B000-memory.dmp

                                  Filesize

                                  15.2MB

                                • memory/5372-73-0x0000000000160000-0x000000000109B000-memory.dmp

                                  Filesize

                                  15.2MB

                                • memory/5776-95-0x0000000000B10000-0x0000000001A4B000-memory.dmp

                                  Filesize

                                  15.2MB

                                • memory/5776-93-0x0000000000B10000-0x0000000001A4B000-memory.dmp

                                  Filesize

                                  15.2MB

                                • memory/5876-97-0x0000000000B10000-0x0000000001A4B000-memory.dmp

                                  Filesize

                                  15.2MB