Analysis

  • max time kernel
    1144s
  • max time network
    1146s
  • 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 23:11

General

  • Target

    https://cdn.discordapp.com/attachments/1282846872087695425/1297336024262774907/v.exe?ex=67158dd3&is=67143c53&hm=0374c9cd1d1d534c04fdecb413d1886716b6863a3b05c3b3b0b952688551955e&

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
  • Adds Run key to start application 2 TTPs 2 IoCs
  • UPX packed file 5 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 37 IoCs
  • Suspicious use of SendNotifyMessage 24 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Views/modifies file attributes 1 TTPs 2 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/1282846872087695425/1297336024262774907/v.exe?ex=67158dd3&is=67143c53&hm=0374c9cd1d1d534c04fdecb413d1886716b6863a3b05c3b3b0b952688551955e&
    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:4208
    • 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,0x100,0x104,0xd8,0x108,0x7ffc3d6846f8,0x7ffc3d684708,0x7ffc3d684718
      2⤵
        PID:4120
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2128,7769053441038284553,16091145386004080986,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2364 /prefetch:2
        2⤵
          PID:2988
        • 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=2128,7769053441038284553,16091145386004080986,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2352 /prefetch:3
          2⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:2224
        • 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=2128,7769053441038284553,16091145386004080986,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2440 /prefetch:8
          2⤵
            PID:1184
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2128,7769053441038284553,16091145386004080986,131072 --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=3312 /prefetch:1
            2⤵
              PID:3372
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2128,7769053441038284553,16091145386004080986,131072 --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=3328 /prefetch:1
              2⤵
                PID:464
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2128,7769053441038284553,16091145386004080986,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5268 /prefetch:1
                2⤵
                  PID:3600
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2128,7769053441038284553,16091145386004080986,131072 --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=8 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5036 /prefetch:1
                  2⤵
                    PID:2680
                  • 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=2128,7769053441038284553,16091145386004080986,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5544 /prefetch:8
                    2⤵
                      PID:4356
                    • 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=2128,7769053441038284553,16091145386004080986,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5544 /prefetch:8
                      2⤵
                      • Suspicious behavior: EnumeratesProcesses
                      PID:4076
                    • 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=2128,7769053441038284553,16091145386004080986,131072 --lang=en-US --service-sandbox-type=collections --mojo-platform-channel-handle=2424 /prefetch:8
                      2⤵
                        PID:5096
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2128,7769053441038284553,16091145386004080986,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=12 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3384 /prefetch:1
                        2⤵
                          PID:1148
                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2128,7769053441038284553,16091145386004080986,131072 --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=4696 /prefetch:1
                          2⤵
                            PID:2844
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2128,7769053441038284553,16091145386004080986,131072 --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=3408 /prefetch:1
                            2⤵
                              PID:2016
                            • 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=2128,7769053441038284553,16091145386004080986,131072 --lang=en-US --service-sandbox-type=icon_reader --mojo-platform-channel-handle=6296 /prefetch:8
                              2⤵
                                PID:3584
                              • 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=2128,7769053441038284553,16091145386004080986,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5580 /prefetch:8
                                2⤵
                                • Suspicious behavior: EnumeratesProcesses
                                PID:4284
                              • C:\Users\Admin\Downloads\v.exe
                                "C:\Users\Admin\Downloads\v.exe"
                                2⤵
                                • Executes dropped EXE
                                • Adds Run key to start application
                                • Suspicious use of AdjustPrivilegeToken
                                PID:5232
                                • C:\Windows\system32\attrib.exe
                                  attrib +h +s C:\Users\Admin\Downloads\v.exe
                                  3⤵
                                  • Views/modifies file attributes
                                  PID:5376
                              • C:\Users\Admin\Downloads\v.exe
                                "C:\Users\Admin\Downloads\v.exe"
                                2⤵
                                • Executes dropped EXE
                                • Adds Run key to start application
                                • Suspicious use of AdjustPrivilegeToken
                                PID:5400
                                • C:\Windows\system32\attrib.exe
                                  attrib +h +s C:\Users\Admin\Downloads\v.exe
                                  3⤵
                                  • Views/modifies file attributes
                                  PID:5468
                              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2128,7769053441038284553,16091145386004080986,131072 --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=1756 /prefetch:2
                                2⤵
                                • Suspicious behavior: EnumeratesProcesses
                                PID:1964
                            • C:\Windows\System32\CompPkgSrv.exe
                              C:\Windows\System32\CompPkgSrv.exe -Embedding
                              1⤵
                                PID:436
                              • C:\Windows\System32\CompPkgSrv.exe
                                C:\Windows\System32\CompPkgSrv.exe -Embedding
                                1⤵
                                  PID:928

                                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

                                  dc058ebc0f8181946a312f0be99ed79c

                                  SHA1

                                  0c6f376ed8f2d4c275336048c7c9ef9edf18bff0

                                  SHA256

                                  378701e87dcff90aa092702bc299859d6ae8f7e313f773bf594f81df6f40bf6a

                                  SHA512

                                  36e0de64a554762b28045baebf9f71930c59d608f8d05c5faf8906d62eaf83f6d856ef1d1b38110e512fbb1a85d3e2310be11a7f679c6b5b3c62313cc7af52aa

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

                                  Filesize

                                  152B

                                  MD5

                                  a0486d6f8406d852dd805b66ff467692

                                  SHA1

                                  77ba1f63142e86b21c951b808f4bc5d8ed89b571

                                  SHA256

                                  c0745fd195f3a51b27e4d35a626378a62935dccebefb94db404166befd68b2be

                                  SHA512

                                  065a62032eb799fade5fe75f390e7ab3c9442d74cb8b520d846662d144433f39b9186b3ef3db3480cd1d1d655d8f0630855ed5d6e85cf157a40c38a19375ed8a

                                • 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

                                  9c4e252f0419150eadc0865957e1b584

                                  SHA1

                                  ad7ec767cc1968eaac8ffd8af47fa1f57bc375f1

                                  SHA256

                                  f719c5ef12e0a92b270be80deaa654a6bc8240cf54191c2adfa727187328e77a

                                  SHA512

                                  e331755de263f2d91b57f15367a3af0e3b04d132b3ce97ffaebb88d1249c74887b444e80630184696c8a7e27e1a55cc96ea200b6e92195abc6f39618ca6930b8

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

                                  Filesize

                                  6KB

                                  MD5

                                  1785d3237138a3b3819d9e8972db5848

                                  SHA1

                                  7300d541f4d9bd35cb01652a867f3563f39c8f7c

                                  SHA256

                                  9c542bafbf75212fe33cb6894507049c9de4259a65627073aeb7ab44cfe0d66f

                                  SHA512

                                  e778bd21546ec37846efc58e7d38ea7d25b43a028d5ea7b1015a9b77b1b35709c3c86c0a39bf8ec26c0142b9b28c763a86281a5b18f668dfaeb775aa9e97c456

                                • 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

                                  fa51c0b0bc247c84fe67c8ea60ca5592

                                  SHA1

                                  b93273ae7fcbc6afa208dc053a41e4e30faad2e3

                                  SHA256

                                  8a4d3c35d569a9b2560353f6195111447805910db323e31b6f55de6cc646b326

                                  SHA512

                                  f5ab21fbe7397a0ec042476e20f3a4f16d2d44f5303ce696db64d4f5631d260e3057f7499e71e9479994e5025e1486e2e8584004bbeb9285e5827e265fa73b37

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

                                  Filesize

                                  11KB

                                  MD5

                                  3f59f18c84f11e4af4eedbf826e008a7

                                  SHA1

                                  210fa65f03a071de4124f9ee065f9f119558da41

                                  SHA256

                                  ba197f152ece9cfb9a84ad7280aebd7101afbef4d056b6767e7631f6a4bc62ef

                                  SHA512

                                  06418218d76a4f89c4ffd4a53f39f3a6265f8caed5584967819c82bb2214f24a0bfa61bec30231f75e3e3372d0ab5a5955ed0a850b481b1c9169f937553d7097

                                • C:\Users\Admin\Downloads\Unconfirmed 991684.crdownload

                                  Filesize

                                  7.5MB

                                  MD5

                                  bc7955bff8c68d8c7592ea25570e4dfc

                                  SHA1

                                  6f64d4c526c85ad434c209dfa9f6162707603432

                                  SHA256

                                  e51a003857a49867085cbc9397e7655c55bf6892df4e829059d23070019cd4b8

                                  SHA512

                                  2b1c68f0dc0d5689125f71fb9b7279225acf276dd3949512f2ef957a93610fc13ee820ed1f23f1db099e7d4fcd8006f924cc5ef0b38a874dd8fabae8f2e2aaa4

                                • \??\pipe\LOCAL\crashpad_4208_LDWFFLVXDEVSEWFA

                                  MD5

                                  d41d8cd98f00b204e9800998ecf8427e

                                  SHA1

                                  da39a3ee5e6b4b0d3255bfef95601890afd80709

                                  SHA256

                                  e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                                  SHA512

                                  cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

                                • memory/5232-70-0x0000000000520000-0x000000000145B000-memory.dmp

                                  Filesize

                                  15.2MB

                                • memory/5232-72-0x0000000000520000-0x000000000145B000-memory.dmp

                                  Filesize

                                  15.2MB

                                • memory/5400-74-0x0000000000550000-0x000000000148B000-memory.dmp

                                  Filesize

                                  15.2MB

                                • memory/5400-77-0x0000000000550000-0x000000000148B000-memory.dmp

                                  Filesize

                                  15.2MB