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Analysis

  • max time kernel
    145s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/03/2024, 20:39

General

  • Target

    https://cdn.discordapp.com/attachments/1207434057038958613/1213583919073468466/eulen_by_zesk_1.rar?ex=65f60119&is=65e38c19&hm=3f59a8c1364cdc49410fc3bcefd8edf58f9c93598daab0e9796c5bfd13c33b9c&

Malware Config

Extracted

Family

discordrat

Attributes
  • discord_token

    MTIxMzU2ODI2MzA3MDY3OTA1MQ.Gb4ha7.Z_jo3j74ZphpFTAOS0awTkjb90p6B3JbJQ4Bms

  • server_id

    1213575249237639189

Signatures

  • Discord RAT

    A RAT written in C# using Discord as a C2.

  • Executes dropped EXE 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 5 IoCs
  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of FindShellTrayWindow 35 IoCs
  • Suspicious use of SendNotifyMessage 24 IoCs
  • Suspicious use of WriteProcessMemory 64 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/1207434057038958613/1213583919073468466/eulen_by_zesk_1.rar?ex=65f60119&is=65e38c19&hm=3f59a8c1364cdc49410fc3bcefd8edf58f9c93598daab0e9796c5bfd13c33b9c&
    1⤵
    • Enumerates system info in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:3060
    • 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,0x100,0x104,0xd8,0x108,0x7fff97af46f8,0x7fff97af4708,0x7fff97af4718
      2⤵
        PID:2432
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2100,16172137599131126463,1560327780659930497,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2108 /prefetch:2
        2⤵
          PID:3620
        • 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=2100,16172137599131126463,1560327780659930497,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2104 /prefetch:3
          2⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:3556
        • 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=2100,16172137599131126463,1560327780659930497,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2880 /prefetch:8
          2⤵
            PID:2224
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2100,16172137599131126463,1560327780659930497,131072 --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=3376 /prefetch:1
            2⤵
              PID:3008
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2100,16172137599131126463,1560327780659930497,131072 --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=3380 /prefetch:1
              2⤵
                PID:4220
              • 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=2100,16172137599131126463,1560327780659930497,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5380 /prefetch:8
                2⤵
                  PID:2092
                • 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=2100,16172137599131126463,1560327780659930497,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5380 /prefetch:8
                  2⤵
                  • Suspicious behavior: EnumeratesProcesses
                  PID:2228
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2100,16172137599131126463,1560327780659930497,131072 --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=5456 /prefetch:1
                  2⤵
                    PID:3560
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2100,16172137599131126463,1560327780659930497,131072 --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=5460 /prefetch:1
                    2⤵
                      PID:1252
                    • 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=2100,16172137599131126463,1560327780659930497,131072 --lang=en-US --service-sandbox-type=collections --mojo-platform-channel-handle=5792 /prefetch:8
                      2⤵
                        PID:4312
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2100,16172137599131126463,1560327780659930497,131072 --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=4136 /prefetch:1
                        2⤵
                          PID:608
                        • 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=2100,16172137599131126463,1560327780659930497,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5952 /prefetch:8
                          2⤵
                          • Suspicious behavior: EnumeratesProcesses
                          PID:4448
                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2100,16172137599131126463,1560327780659930497,131072 --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=6040 /prefetch:1
                          2⤵
                            PID:3864
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2100,16172137599131126463,1560327780659930497,131072 --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=15 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=6060 /prefetch:1
                            2⤵
                              PID:2148
                            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2100,16172137599131126463,1560327780659930497,131072 --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=3764 /prefetch:2
                              2⤵
                              • Suspicious behavior: EnumeratesProcesses
                              PID:2844
                          • C:\Windows\System32\CompPkgSrv.exe
                            C:\Windows\System32\CompPkgSrv.exe -Embedding
                            1⤵
                              PID:3864
                            • C:\Windows\System32\CompPkgSrv.exe
                              C:\Windows\System32\CompPkgSrv.exe -Embedding
                              1⤵
                                PID:2828
                              • C:\Windows\System32\rundll32.exe
                                C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
                                1⤵
                                  PID:2108
                                • C:\Program Files\7-Zip\7zFM.exe
                                  "C:\Program Files\7-Zip\7zFM.exe" "C:\Users\Admin\Downloads\eulen_by_zesk_1.rar"
                                  1⤵
                                  • Suspicious behavior: GetForegroundWindowSpam
                                  • Suspicious use of AdjustPrivilegeToken
                                  • Suspicious use of FindShellTrayWindow
                                  PID:3992
                                  • C:\Users\Admin\AppData\Local\Temp\7zO89F2CD37\eulen by zesk (1).exe
                                    "C:\Users\Admin\AppData\Local\Temp\7zO89F2CD37\eulen by zesk (1).exe"
                                    2⤵
                                    • Executes dropped EXE
                                    • Suspicious use of AdjustPrivilegeToken
                                    PID:2188

                                Network

                                MITRE ATT&CK Enterprise v15

                                Replay Monitor

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                                Downloads

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

                                  Filesize

                                  152B

                                  MD5

                                  9ffb5f81e8eccd0963c46cbfea1abc20

                                  SHA1

                                  a02a610afd3543de215565bc488a4343bb5c1a59

                                  SHA256

                                  3a654b499247e59e34040f3b192a0069e8f3904e2398cbed90e86d981378e8bc

                                  SHA512

                                  2d21e18ef3f800e6e43b8cf03639d04510433c04215923f5a96432a8aa361fdda282cd444210150d9dbf8f028825d5bc8a451fd53bd3e0c9528eeb80d6e86597

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

                                  Filesize

                                  152B

                                  MD5

                                  e1b45169ebca0dceadb0f45697799d62

                                  SHA1

                                  803604277318898e6f5c6fb92270ca83b5609cd5

                                  SHA256

                                  4c0224fb7cc26ccf74f5be586f18401db57cce935c767a446659b828a7b5ee60

                                  SHA512

                                  357965b8d5cfaf773dbd9b371d7e308d1c86a6c428e542adbfe6bac34a7d2061d0a2f59e84e5b42768930e9b109e9e9f2a87e95cf26b3a69cbff05654ee42b4e

                                • 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

                                  d4cf09851b5c4a0945e7455ce531c612

                                  SHA1

                                  875d0861bdc9b7c970c80f6e1f57a9d263b54ba8

                                  SHA256

                                  0fa0d7052c0eee49d80a78147bc2b3a1ee40193c91391b44bc60279971c70958

                                  SHA512

                                  4ff45d089831cfaa4fb7a9aeedb7111277bb1f0a6ffba80de27500ed73dd764ac6e8fec2fa4d3acc4b9d1e8efe78a1c069a3a0ebd8a7709b785119893f265772

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

                                  Filesize

                                  6KB

                                  MD5

                                  83b0ab6f40a0971b28b8a8ee42d47215

                                  SHA1

                                  76d8af6d0c91030fbcdf23165c57a8b02ea1b2cb

                                  SHA256

                                  22f7ab1c5137920bbf4a706facbc47860d19b8d59af8d0b3f91bef3f8fb29ce2

                                  SHA512

                                  9fe65fcdc9739fde49739dc4127c594872320cabe2423b4f42d04195062d760b2433856f8083e50128d4c0783240b83554aea4966aa705b0d58302edf50f4492

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

                                  Filesize

                                  6KB

                                  MD5

                                  a5792b6a7b60923ef595b2af59c8b799

                                  SHA1

                                  a49aa4c605b9a5622a14519f96dde895e08b8a1b

                                  SHA256

                                  266f5079fef83d0ab4bae243a8fb655d9b11f24044b7be4ad5fcbad5f44e8382

                                  SHA512

                                  dfec1d72d0ea816c1a6b8ae51b96edd73feeb1501ba4286dd20ad41b314d7c6fc9f78ce04ac159d85ff5946e5ef9cf2af7786c8c79d4f8ee6c0996bcbc607c7f

                                • 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

                                  544920997ece4b59541bfbcbb8758b19

                                  SHA1

                                  ea4a33266b1329ddfe1119bd59f4ef046f51b22c

                                  SHA256

                                  4152d39515a2555f26cf98820245ca1d10b07baddb416f01f6c4e6c68eb29c62

                                  SHA512

                                  20adc359f733d963cb480b98e445d26602ae586a10e09a291e5a6882a75fe7e7c95d8911ac3f944f77e62b1fdb4d019957efc338bf9778cda0b041480767b1a0

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

                                  Filesize

                                  11KB

                                  MD5

                                  069a070f75d8e9fd5800e3a04d48b9fc

                                  SHA1

                                  d116b37562527ba99f134c87881fa6d378fcf496

                                  SHA256

                                  84cabc6bb844186db44dbd3dad95bd85ef098068f599f2c4053f4f129c1ee102

                                  SHA512

                                  03296ee30e2af95920dad5fe721f7b061c69b3dc61b2c64c57a4a12ed3deca8cf1f9e3aeddd014c60a6c904654028c4831a6c5dc682aff035b0ff5b69e72d7cb

                                • C:\Users\Admin\AppData\Local\Temp\7zO89F2CD37\eulen by zesk (1).exe

                                  Filesize

                                  78KB

                                  MD5

                                  2f8ebf410b5f7dcdcb74896cf39f5913

                                  SHA1

                                  602391026babea06341d7b3679062afd3a3dcc31

                                  SHA256

                                  2d7c90f221ea2287016c50613491b24d7e3eefd35778e3a8e417f5459f184dd2

                                  SHA512

                                  24c3d92a771e32eaeeb1892c92be555e444e332d759ca6e037df145ceeac79ef1ddca74147d810b16b7c1453539de4ec4a2590f16e2c980b0670485ee0b6514e

                                • C:\Users\Admin\Downloads\eulen_by_zesk_1.rar

                                  Filesize

                                  26KB

                                  MD5

                                  21aa5cd098f26bfbd980dbb6f6ff96d5

                                  SHA1

                                  dd859088a73e8bdda5be5a4a18a9d04c829203aa

                                  SHA256

                                  5f82eb400042a4a63f5188d1de3f85192003b867e62e3340db971a2a578212b6

                                  SHA512

                                  0d52599708ac165a1430a3552e67c58263dfd4424b4ccc4c20914d8cb2bf03cda5f45d6b157c783d48d90308b925075ff59b7aad5cce0a17d7adff8f4cf1c3ef

                                • memory/2188-72-0x00007FFF83F00000-0x00007FFF849C1000-memory.dmp

                                  Filesize

                                  10.8MB

                                • memory/2188-71-0x00000209F38E0000-0x00000209F3AA2000-memory.dmp

                                  Filesize

                                  1.8MB

                                • memory/2188-73-0x00000209F3840000-0x00000209F3850000-memory.dmp

                                  Filesize

                                  64KB

                                • memory/2188-74-0x00000209F4120000-0x00000209F4648000-memory.dmp

                                  Filesize

                                  5.2MB

                                • memory/2188-86-0x00007FFF83F00000-0x00007FFF849C1000-memory.dmp

                                  Filesize

                                  10.8MB

                                • memory/2188-90-0x00000209F3840000-0x00000209F3850000-memory.dmp

                                  Filesize

                                  64KB

                                • memory/2188-70-0x00000209D92D0000-0x00000209D92E8000-memory.dmp

                                  Filesize

                                  96KB