Analysis

  • max time kernel
    72s
  • max time network
    73s
  • platform
    windows10-ltsc 2021_x64
  • resource
    win10ltsc2021-20241023-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system
  • submitted
    04-12-2024 09:33

General

  • Target

    Top4smm Dinero Ilimitado.zip

  • Size

    1.1MB

  • MD5

    bfa47aae21e145867fa2536f3adb0fbb

  • SHA1

    b7b6eaccdf32b323421b75ad8e4e420a4527b151

  • SHA256

    a9fc07683b0c89a1a3cfba37fd4548e6b28ebf334dca8cf79d4edada41ece724

  • SHA512

    8ca4870f1949aaf6476b3ed18bfa5764110184242d0ae2d631b28b618cb167ec4de3267776be67a6bfd1de66e5f777fc75d25a8de2c75ef16578637f514906ae

  • SSDEEP

    24576:+NEcxEieY4MkUNZfAzaSbhDmRsYyAo1GMvTSplXql0pDAkddsid2g4:6Ecx5UUnfW9qRU4E2lXSH0sidD4

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

azxq0ap.localto.net:3425

Mutex

e51e2b65-e963-4051-9736-67d57ed46798

Attributes
  • encryption_key

    AEA258EF65BF1786F0F767C0BE2497ECC304C46F

  • install_name

    WindowsUpdate.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    WindowsUpdate

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar family
  • Quasar payload 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Drops file in Windows directory 1 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies data under HKEY_USERS 2 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 47 IoCs
  • Suspicious use of FindShellTrayWindow 28 IoCs
  • Suspicious use of SendNotifyMessage 24 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Program Files\7-Zip\7zFM.exe
    "C:\Program Files\7-Zip\7zFM.exe" "C:\Users\Admin\AppData\Local\Temp\Top4smm Dinero Ilimitado.zip"
    1⤵
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:968
  • C:\Users\Admin\Desktop\Top4smm Dinero Ilimitado.exe
    "C:\Users\Admin\Desktop\Top4smm Dinero Ilimitado.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2040
    • C:\Windows\SYSTEM32\schtasks.exe
      "schtasks" /create /tn "WindowsUpdate" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\WindowsUpdate.exe" /rl HIGHEST /f
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:3888
    • C:\Users\Admin\AppData\Roaming\SubDir\WindowsUpdate.exe
      "C:\Users\Admin\AppData\Roaming\SubDir\WindowsUpdate.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:984
      • C:\Windows\SYSTEM32\schtasks.exe
        "schtasks" /create /tn "WindowsUpdate" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\WindowsUpdate.exe" /rl HIGHEST /f
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:3580
  • C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe"
    1⤵
    • Drops file in Windows directory
    • Enumerates system info in registry
    • Modifies data under HKEY_USERS
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:4420
    • C:\Program Files\Google\Chrome\Application\chrome.exe
      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=123.0.6312.123 --initial-client-data=0x220,0x224,0x228,0x1fc,0x22c,0x7ffb301fcc40,0x7ffb301fcc4c,0x7ffb301fcc58
      2⤵
        PID:1680
      • C:\Program Files\Google\Chrome\Application\chrome.exe
        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --no-appcompat-clear --gpu-preferences=WAAAAAAAAADgAAAMAAAAAAAAAAAAAAAAAABgAAEAAAA4AAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGAAAAAAAAAAYAAAAAAAAAAgAAAAAAAAACAAAAAAAAAAIAAAAAAAAAA== --field-trial-handle=1936,i,11457582565198031133,16719503274814836119,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=1904 /prefetch:2
        2⤵
          PID:2484
        • C:\Program Files\Google\Chrome\Application\chrome.exe
          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --no-appcompat-clear --field-trial-handle=2196,i,11457582565198031133,16719503274814836119,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=2260 /prefetch:3
          2⤵
            PID:1544
          • C:\Program Files\Google\Chrome\Application\chrome.exe
            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=service --no-appcompat-clear --field-trial-handle=2280,i,11457582565198031133,16719503274814836119,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=2276 /prefetch:8
            2⤵
              PID:2424
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --no-appcompat-clear --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --field-trial-handle=3172,i,11457582565198031133,16719503274814836119,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=3180 /prefetch:1
              2⤵
                PID:1472
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --no-appcompat-clear --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --field-trial-handle=3200,i,11457582565198031133,16719503274814836119,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=3240 /prefetch:1
                2⤵
                  PID:4428
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --no-appcompat-clear --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --field-trial-handle=4604,i,11457582565198031133,16719503274814836119,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=3704 /prefetch:1
                  2⤵
                    PID:3592
                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.ProcessorMetrics --lang=en-US --service-sandbox-type=none --no-appcompat-clear --field-trial-handle=4816,i,11457582565198031133,16719503274814836119,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=4828 /prefetch:8
                    2⤵
                      PID:3840
                    • C:\Program Files\Google\Chrome\Application\chrome.exe
                      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --no-appcompat-clear --field-trial-handle=4984,i,11457582565198031133,16719503274814836119,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=4860 /prefetch:8
                      2⤵
                        PID:2364
                      • C:\Program Files\Google\Chrome\Application\chrome.exe
                        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=unzip.mojom.Unzipper --lang=en-US --service-sandbox-type=service --no-appcompat-clear --field-trial-handle=4860,i,11457582565198031133,16719503274814836119,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=4840 /prefetch:8
                        2⤵
                          PID:2716
                        • C:\Program Files\Google\Chrome\Application\chrome.exe
                          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --no-appcompat-clear --field-trial-handle=4540,i,11457582565198031133,16719503274814836119,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=4844 /prefetch:8
                          2⤵
                            PID:448
                          • C:\Program Files\Google\Chrome\Application\chrome.exe
                            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=unzip.mojom.Unzipper --lang=en-US --service-sandbox-type=service --no-appcompat-clear --field-trial-handle=5132,i,11457582565198031133,16719503274814836119,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=4992 /prefetch:8
                            2⤵
                              PID:1920
                            • C:\Program Files\Google\Chrome\Application\chrome.exe
                              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --no-appcompat-clear --field-trial-handle=5104,i,11457582565198031133,16719503274814836119,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=5172 /prefetch:8
                              2⤵
                                PID:1940
                              • C:\Program Files\Google\Chrome\Application\chrome.exe
                                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --extension-process --no-appcompat-clear --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=14 --field-trial-handle=5184,i,11457582565198031133,16719503274814836119,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=5176 /prefetch:2
                                2⤵
                                  PID:1828
                              • C:\Program Files\Google\Chrome\Application\123.0.6312.123\elevation_service.exe
                                "C:\Program Files\Google\Chrome\Application\123.0.6312.123\elevation_service.exe"
                                1⤵
                                  PID:2468
                                • C:\Windows\system32\svchost.exe
                                  C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s NgcSvc
                                  1⤵
                                    PID:3716

                                  Network

                                  MITRE ATT&CK Enterprise v15

                                  Replay Monitor

                                  Loading Replay Monitor...

                                  Downloads

                                  • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\BrowsingTopicsState

                                    Filesize

                                    649B

                                    MD5

                                    c234c7c9220c74cbe29227b83f5dbd7d

                                    SHA1

                                    c9174655b62687fa0158f357a5844728cb295317

                                    SHA256

                                    5d700be65451c2b750cc60305feba6dad005fb7608de05076b8fb47b12176f80

                                    SHA512

                                    0daf8fc1a811bb891ead10107c87885cd7d0c29a377056ec7ace7ee5bc6db3431d84ae8d9eb19caca9ae96dacd72f3b3b196cbf5304d63200692ae0ca60787bb

                                  • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Extensions\ghbmnnjooekpmoecnnnilnnbdlolhkhi\1.84.1_0\_locales\en_CA\messages.json

                                    Filesize

                                    851B

                                    MD5

                                    07ffbe5f24ca348723ff8c6c488abfb8

                                    SHA1

                                    6dc2851e39b2ee38f88cf5c35a90171dbea5b690

                                    SHA256

                                    6895648577286002f1dc9c3366f558484eb7020d52bbf64a296406e61d09599c

                                    SHA512

                                    7ed2c8db851a84f614d5daf1d5fe633bd70301fd7ff8a6723430f05f642ceb3b1ad0a40de65b224661c782ffcec69d996ebe3e5bb6b2f478181e9a07d8cd41f6

                                  • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Extensions\ghbmnnjooekpmoecnnnilnnbdlolhkhi\1.84.1_0\dasherSettingSchema.json

                                    Filesize

                                    854B

                                    MD5

                                    4ec1df2da46182103d2ffc3b92d20ca5

                                    SHA1

                                    fb9d1ba3710cf31a87165317c6edc110e98994ce

                                    SHA256

                                    6c69ce0fe6fab14f1990a320d704fee362c175c00eb6c9224aa6f41108918ca6

                                    SHA512

                                    939d81e6a82b10ff73a35c931052d8d53d42d915e526665079eeb4820df4d70f1c6aebab70b59519a0014a48514833fefd687d5a3ed1b06482223a168292105d

                                  • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\SCT Auditing Pending Reports

                                    Filesize

                                    2B

                                    MD5

                                    d751713988987e9331980363e24189ce

                                    SHA1

                                    97d170e1550eee4afc0af065b78cda302a97674c

                                    SHA256

                                    4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945

                                    SHA512

                                    b25b294cb4deb69ea00a4c3cf3113904801b6015e5956bd019a8570b1fe1d6040e944ef3cdee16d0a46503ca6e659a25f21cf9ceddc13f352a3c98138c15d6af

                                  • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\TransportSecurity

                                    Filesize

                                    356B

                                    MD5

                                    52a3074f105c59c820f7aa4497a980c8

                                    SHA1

                                    e39f4e0aea008cbc01950faff5f6d5fff6015b36

                                    SHA256

                                    126c6e9dc06656efdd317d8a2fb0e3bfa318deeb3c5e9f3def25e7c379c4eac1

                                    SHA512

                                    a99b5f2acb92529ce1bd486e87bda0acc5ec440dc34964d494e6e41560ac3fdaa7d2254258a0975bbd1a45d2a8b02093cdae4f2a336ecfa9b227890ce3471051

                                  • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences

                                    Filesize

                                    9KB

                                    MD5

                                    7cfadbe64170146c288d790247b02e8e

                                    SHA1

                                    5f84f7eb130e7619ebe9795dd023ee0ca3612377

                                    SHA256

                                    c033b94d95db4ad00e353614554c36c3023da5c085b3935cdf4eb4c4253ca474

                                    SHA512

                                    d098f3207fd53d1f92b4a28ba4e081c6218bb911ebea4d4961bb4d92861769aefd23d65aca2b535599b947a072d6e7ce9058780c79863555231cab3aa44f3117

                                  • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Secure Preferences

                                    Filesize

                                    15KB

                                    MD5

                                    903d68768e1fa198f5f792af479be565

                                    SHA1

                                    8bf51e1bce480c68b99852b29664997d66ced7b8

                                    SHA256

                                    a895b3df811e6ce1f3d434f3ce16f42ea6913ff1092f807d55d8a58546c12116

                                    SHA512

                                    5ed1c5299433f0c849df0db3eaebdc7162ee79bdc19735c41552adcc940a1e2a6215cde08240fff6fbc81c10b79b433fdecd7321dbe0e7f3d02e1933a4033c10

                                  • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State

                                    Filesize

                                    236KB

                                    MD5

                                    6848ca144246ba6834843e383b460506

                                    SHA1

                                    a2d7feb76c8d20c2f06cd4e2e213e321e226911c

                                    SHA256

                                    7bbd89a2a9392fd2f19af53aaa4589f5b8882c462060adfb559e1577fa7008a5

                                    SHA512

                                    8030c5587d0a2277f8345157729b6baa5e3eb1cbab94eae54a001616a4d23fe233e956aab263bce8355468303993161e1551909e428aca709e6970e303aa0e14

                                  • C:\Users\Admin\AppData\Local\Temp\scoped_dir4420_389297740\CRX_INSTALL\_locales\en_CA\messages.json

                                    Filesize

                                    711B

                                    MD5

                                    558659936250e03cc14b60ebf648aa09

                                    SHA1

                                    32f1ce0361bbfdff11e2ffd53d3ae88a8b81a825

                                    SHA256

                                    2445cad863be47bb1c15b57a4960b7b0d01864e63cdfde6395f3b2689dc1444b

                                    SHA512

                                    1632f5a3cd71887774bf3cb8a4d8b787ea6278271657b0f1d113dbe1a7fd42c4daa717cc449f157ce8972037572b882dc946a7dc2c0e549d71982dcdee89f727

                                  • C:\Users\Admin\Desktop\Top4smm Dinero Ilimitado.exe

                                    Filesize

                                    3.2MB

                                    MD5

                                    74474ce327c2d8e2b74eba981a7e3249

                                    SHA1

                                    48544696b4ce7c96559a791efb58ec7481092454

                                    SHA256

                                    46ca3722c1851d6a68aea45c19e64a4c735eb236403e172422d02bbff4e35cca

                                    SHA512

                                    0c5b75305b19e0dcaacb9f3df556cdb136c002a5732625cb096fdd0a69e4a6a4b96507bb2948b847e2726d98e424462a237e0c0cecb1210c45cef52c7c1accc1

                                  • \??\pipe\crashpad_4420_QIMEQUSDBFWUGKKV

                                    MD5

                                    d41d8cd98f00b204e9800998ecf8427e

                                    SHA1

                                    da39a3ee5e6b4b0d3255bfef95601890afd80709

                                    SHA256

                                    e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                                    SHA512

                                    cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

                                  • memory/984-15-0x000000001D370000-0x000000001D3AC000-memory.dmp

                                    Filesize

                                    240KB

                                  • memory/984-14-0x000000001C6F0000-0x000000001C702000-memory.dmp

                                    Filesize

                                    72KB

                                  • memory/984-11-0x000000001C730000-0x000000001C7E2000-memory.dmp

                                    Filesize

                                    712KB

                                  • memory/984-10-0x000000001C620000-0x000000001C670000-memory.dmp

                                    Filesize

                                    320KB

                                  • memory/2040-9-0x00007FFB388F0000-0x00007FFB393B2000-memory.dmp

                                    Filesize

                                    10.8MB

                                  • memory/2040-6-0x00007FFB388F0000-0x00007FFB393B2000-memory.dmp

                                    Filesize

                                    10.8MB

                                  • memory/2040-5-0x0000000000970000-0x0000000000CA2000-memory.dmp

                                    Filesize

                                    3.2MB

                                  • memory/2040-4-0x00007FFB388F3000-0x00007FFB388F5000-memory.dmp

                                    Filesize

                                    8KB