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Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08/01/2025, 00:02

General

  • Target

    http://185.66.91.17/Downloads/.exe

Malware Config

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers written in C#.

  • Asyncrat family
  • StormKitty

    StormKitty is an open source info stealer written in C#.

  • StormKitty payload 1 IoCs
  • Stormkitty family
  • Async RAT payload 1 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 32 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 38 IoCs
  • Suspicious use of SendNotifyMessage 24 IoCs
  • Suspicious use of SetWindowsHookEx 1 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" --start-maximized --single-argument http://185.66.91.17/Downloads/.exe
    1⤵
    • Enumerates system info in registry
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:2972
    • 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,0x100,0x104,0xd8,0x108,0x7ffa14a546f8,0x7ffa14a54708,0x7ffa14a54718
      2⤵
        PID:4372
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2172,11992249420420640976,8137069975791241766,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2184 /prefetch:2
        2⤵
          PID:3928
        • 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=2172,11992249420420640976,8137069975791241766,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2236 /prefetch:3
          2⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:3516
        • 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=2172,11992249420420640976,8137069975791241766,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2856 /prefetch:8
          2⤵
            PID:4396
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2172,11992249420420640976,8137069975791241766,131072 --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=3224 /prefetch:1
            2⤵
              PID:3564
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2172,11992249420420640976,8137069975791241766,131072 --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=3244 /prefetch:1
              2⤵
                PID:320
              • 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=2172,11992249420420640976,8137069975791241766,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4940 /prefetch:8
                2⤵
                  PID:2528
                • 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=2172,11992249420420640976,8137069975791241766,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4940 /prefetch:8
                  2⤵
                  • Suspicious behavior: EnumeratesProcesses
                  PID:1420
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2172,11992249420420640976,8137069975791241766,131072 --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=4984 /prefetch:1
                  2⤵
                    PID:4688
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2172,11992249420420640976,8137069975791241766,131072 --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=5028 /prefetch:1
                    2⤵
                      PID:64
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2172,11992249420420640976,8137069975791241766,131072 --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=5196 /prefetch:1
                      2⤵
                        PID:3868
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2172,11992249420420640976,8137069975791241766,131072 --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=5144 /prefetch:1
                        2⤵
                          PID:4912
                        • 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=2172,11992249420420640976,8137069975791241766,131072 --lang=en-US --service-sandbox-type=collections --mojo-platform-channel-handle=4984 /prefetch:8
                          2⤵
                            PID:3040
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2172,11992249420420640976,8137069975791241766,131072 --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=5508 /prefetch:1
                            2⤵
                              PID:2100
                            • 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=2172,11992249420420640976,8137069975791241766,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4608 /prefetch:8
                              2⤵
                              • Suspicious behavior: EnumeratesProcesses
                              PID:1300
                            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2172,11992249420420640976,8137069975791241766,131072 --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=1848 /prefetch:2
                              2⤵
                              • Suspicious behavior: EnumeratesProcesses
                              PID:2004
                          • C:\Windows\System32\CompPkgSrv.exe
                            C:\Windows\System32\CompPkgSrv.exe -Embedding
                            1⤵
                              PID:2496
                            • C:\Windows\System32\CompPkgSrv.exe
                              C:\Windows\System32\CompPkgSrv.exe -Embedding
                              1⤵
                                PID:4224
                              • C:\Windows\System32\rundll32.exe
                                C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
                                1⤵
                                  PID:5096
                                • C:\Users\Admin\Downloads\exe.exe
                                  "C:\Users\Admin\Downloads\exe.exe"
                                  1⤵
                                  • Executes dropped EXE
                                  • Adds Run key to start application
                                  • System Location Discovery: System Language Discovery
                                  • Suspicious behavior: EnumeratesProcesses
                                  • Suspicious use of AdjustPrivilegeToken
                                  • Suspicious use of SetWindowsHookEx
                                  PID:832

                                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

                                  85ba073d7015b6ce7da19235a275f6da

                                  SHA1

                                  a23c8c2125e45a0788bac14423ae1f3eab92cf00

                                  SHA256

                                  5ad04b8c19bf43b550ad725202f79086168ecccabe791100fba203d9aa27e617

                                  SHA512

                                  eb4fd72d7030ea1a25af2b59769b671a5760735fb95d18145f036a8d9e6f42c903b34a7e606046c740c644fab0bb9f5b7335c1869b098f121579e71f10f5a9c3

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

                                  Filesize

                                  152B

                                  MD5

                                  7de1bbdc1f9cf1a58ae1de4951ce8cb9

                                  SHA1

                                  010da169e15457c25bd80ef02d76a940c1210301

                                  SHA256

                                  6e390bbc0d03a652516705775e8e9a7b7936312a8a5bea407f9d7d9fa99d957e

                                  SHA512

                                  e4a33f2128883e71ab41e803e8b55d0ac17cbc51be3bde42bed157df24f10f34ad264f74ef3254dbe30d253aca03158fde21518c2b78aaa05dae8308b1c5f30c

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

                                  Filesize

                                  5KB

                                  MD5

                                  c3c210069d0df90b3a31dc29d0416cbc

                                  SHA1

                                  120f318662867ac0724baaf9f7da2a3ab20501f6

                                  SHA256

                                  9fa6f9eb9924bc9c51f90ec755a30f69572323c6443b6ac1cb5ee877d9f189b6

                                  SHA512

                                  cd2193a45960695dd602e973b37645711ce709040186f90bdbeaefe6a9fc3f82dbc2a8f94ab0548a33f1883c9cbb4b0bd08c04b2229e0ee04202996e3bad54fc

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

                                  Filesize

                                  6KB

                                  MD5

                                  a1a14419d90553c3243285245aec94eb

                                  SHA1

                                  f4eb7dd60bc07cec80981b8e41eb7454b2355149

                                  SHA256

                                  2b3e3cac4ead60b72d3c68c11a129e764fede6a6fa3c0c49abe4b4bc23dc08cf

                                  SHA512

                                  3e035e85408b1d380a13a8f00a38e1e5b11635c2459b79713e0f91fa7e0c696cc8aaf0a5d3f461d3c1fe8802e3b9f868823462f1399836a4c7da1ebd62788c3f

                                • 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

                                  5b78b90b450acb262e59892d3f3dc783

                                  SHA1

                                  117d354d14f560c18a80ca621af3123089e3eb11

                                  SHA256

                                  c40c284bafca1923fe78250955498d48c4027c40c4fdb65370b4c377c95ff929

                                  SHA512

                                  c7b6052e9306027c50b2ac95b6030f723cd1454b902fb4c7041c6ef738c40a074e22516f6a500946efcbb4374e674a4a3f8463e375143965c4e1d622585ba2f6

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

                                  Filesize

                                  10KB

                                  MD5

                                  eb0f7b10395d43df0064ac2b176ddda5

                                  SHA1

                                  209dc0d3c6514d1d64d79b418a941897c21dac5d

                                  SHA256

                                  f980277c4c93e278a609ccea8e5ea15d62a556eeef1b21b4b4260bcb48556f05

                                  SHA512

                                  f6ed8b131a329a890c8293c8c0c1a0aa0749f76500ee1545e79d7eb4e0ce35420213fab599855bd6899fd525c459cbefb946b19f6d8fb3defac084b36ee0216d

                                • C:\Users\Admin\Downloads\exe

                                  Filesize

                                  4.2MB

                                  MD5

                                  781da1c06e074c6dfbb0c6b797df9eb7

                                  SHA1

                                  38e79b6ea79d430c6858a976afb0bb60a5aa3320

                                  SHA256

                                  9888ce35d905f7a831dd0ff96757c45c6bd7adea987720b05141f3522c480b18

                                  SHA512

                                  69df833452ea77393c54ffa449dc625720ac0fb449a3ee1da20d867c208555edf5845076ea00dc5a6d05254cf87fdd39fed12e33d3c6f726ba2e42060a9c2b3e

                                • memory/832-60-0x00000000007D0000-0x0000000000C16000-memory.dmp

                                  Filesize

                                  4.3MB

                                • memory/832-61-0x00000000054F0000-0x00000000057F4000-memory.dmp

                                  Filesize

                                  3.0MB

                                • memory/832-62-0x0000000005DE0000-0x0000000006384000-memory.dmp

                                  Filesize

                                  5.6MB

                                • memory/832-81-0x0000000005D10000-0x0000000005DA2000-memory.dmp

                                  Filesize

                                  584KB

                                • memory/832-82-0x0000000005CA0000-0x0000000005CAA000-memory.dmp

                                  Filesize

                                  40KB