Analysis

  • max time kernel
    98s
  • max time network
    100s
  • platform
    windows10-ltsc 2021_x64
  • resource
    win10ltsc2021-20241023-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system
  • submitted
    05-11-2024 19:29

General

  • Target

    kreo q zi.7z

  • Size

    922KB

  • MD5

    ec516db688f94e98d5141f4bade557e9

  • SHA1

    198ffbae5eed415ac673f5e371774759f1a53de1

  • SHA256

    282d6f5ddc83351dab51e6decc1293b078638f0cfd0baca4673afc8246fd32bd

  • SHA512

    ecc34ad7d15fbedbbc4e62b469f5e6e5e71099e19831574da61dc9f751ed5b2faad1676b8b3dbf0911c4dac628c7a15e9d07d953692c5ab1b700ea07f6396985

  • SSDEEP

    24576:yScP7qLl4iGQATiKL0aywxTodSrUF+nVZLLymvgDoSAWcNtMXqWOU:07qLl4KATiJUo0UEnLmmvqiWcNtMXDOU

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

hola435-24858.portmap.host:24858

Mutex

e51e2b65-e963-4051-9736-67d57ed46798

Attributes
  • encryption_key

    AEA258EF65BF1786F0F767C0BE2497ECC304C46F

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • 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
  • Modifies registry class 1 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 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 29 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\kreo q zi.7z"
    1⤵
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:2288
  • C:\Users\Admin\Desktop\kreo q zi.exe
    "C:\Users\Admin\Desktop\kreo q zi.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3524
    • C:\Windows\SYSTEM32\schtasks.exe
      "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:3592
    • C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
      "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3132
      • C:\Windows\SYSTEM32\schtasks.exe
        "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:1256
  • 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:696
    • 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,0x7ffedc49cc40,0x7ffedc49cc4c,0x7ffedc49cc58
      2⤵
        PID:1568
      • 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=1836,i,10495278782615917772,12437503823299298718,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=1848 /prefetch:2
        2⤵
          PID:3484
        • 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=2116,i,10495278782615917772,12437503823299298718,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=2216 /prefetch:3
          2⤵
            PID:4924
          • 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=2300,i,10495278782615917772,12437503823299298718,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=2268 /prefetch:8
            2⤵
              PID:1208
            • 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=3144,i,10495278782615917772,12437503823299298718,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=3164 /prefetch:1
              2⤵
                PID:3052
              • 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=3172,i,10495278782615917772,12437503823299298718,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=3204 /prefetch:1
                2⤵
                  PID:4536
                • 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=3712,i,10495278782615917772,12437503823299298718,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=3184 /prefetch:1
                  2⤵
                    PID:4700
                  • 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=4692,i,10495278782615917772,12437503823299298718,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=4568 /prefetch:8
                    2⤵
                      PID:2000
                    • 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=4696,i,10495278782615917772,12437503823299298718,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=4820 /prefetch:8
                      2⤵
                        PID:1912
                      • 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=4828,i,10495278782615917772,12437503823299298718,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=4540 /prefetch:8
                        2⤵
                          PID:4552
                        • 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=4764,i,10495278782615917772,12437503823299298718,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=4716 /prefetch:8
                          2⤵
                            PID:2220
                          • 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=12 --field-trial-handle=4868,i,10495278782615917772,12437503823299298718,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=3788 /prefetch:1
                            2⤵
                              PID:2836
                            • 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=13 --field-trial-handle=5316,i,10495278782615917772,12437503823299298718,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=5260 /prefetch:1
                              2⤵
                                PID:1996
                              • 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=14 --field-trial-handle=3424,i,10495278782615917772,12437503823299298718,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=3364 /prefetch:1
                                2⤵
                                  PID:2364
                                • C:\Program Files\Google\Chrome\Application\chrome.exe
                                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=audio.mojom.AudioService --lang=en-US --service-sandbox-type=audio --no-appcompat-clear --field-trial-handle=3196,i,10495278782615917772,12437503823299298718,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=4560 /prefetch:8
                                  2⤵
                                    PID:2672
                                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=video_capture.mojom.VideoCaptureService --lang=en-US --service-sandbox-type=none --no-appcompat-clear --field-trial-handle=4544,i,10495278782615917772,12437503823299298718,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=4604 /prefetch:8
                                    2⤵
                                    • Modifies registry class
                                    PID:1512
                                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --no-appcompat-clear --field-trial-handle=504,i,10495278782615917772,12437503823299298718,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=4528 /prefetch:8
                                    2⤵
                                      PID:536
                                    • C:\Program Files\Google\Chrome\Application\chrome.exe
                                      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --no-appcompat-clear --field-trial-handle=4604,i,10495278782615917772,12437503823299298718,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=4620 /prefetch:8
                                      2⤵
                                        PID:3440
                                    • 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:2356
                                      • C:\Windows\system32\svchost.exe
                                        C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s NgcSvc
                                        1⤵
                                          PID:2420

                                        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

                                          fe42b9fe85ede00687e7b6df14b92aa1

                                          SHA1

                                          e2f4a0ff511a482f07b0631f245a4eb3a9d0de88

                                          SHA256

                                          c912f7aeaad23e44aadf112f1050dccdbb740a643c229f04d5f62ce8ac0be073

                                          SHA512

                                          6d760fbaf837bb0ff6aa4e4c31c7c92505c71f20384bb4213fb8060192e6c8a61a36c4bfe393df7f354012376c933c024b7d40d5b59ab8a90ac321ba61b25318

                                        • 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

                                          524B

                                          MD5

                                          f2f93663b12e4aeb993bac968c28b73d

                                          SHA1

                                          a2023e248006209ff8ce879b05a25f5f8ef5bd8c

                                          SHA256

                                          53e1ed9505e65ce0feb8cdbf4854f5b867f2ef626c344972f29cf76b616dbd93

                                          SHA512

                                          7189cec16dd7617d33aca7f35f55e65fb83c00c32f1d485e909b11d00c0dd2586e17bb7d7f92d9781bbb7780b9bfe826b5a7816e583d70c89ec51dab57cea234

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

                                          Filesize

                                          1KB

                                          MD5

                                          de638f8c76beafeb9115f881c03af5ac

                                          SHA1

                                          8f068ba6a6bfa180c3e7ca92a59bc859ac1baa6a

                                          SHA256

                                          ecc1abf260c9899873a7637ae180127479cb6cabb70d39fe8b484256bc0a6538

                                          SHA512

                                          9f2dac950434e1ec7af052ec4993bee81ca99fbc0aee036b1bfdef5fcf6539fe467bf96a420edebee450db24b063a92916de9e6ea6e922c29c4bb9472b98b420

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

                                          Filesize

                                          9KB

                                          MD5

                                          cd7ef61fe5853984c65b2630d1f18b0c

                                          SHA1

                                          b2696b945a148966f2a1619f24f6938b16fc6bc9

                                          SHA256

                                          33f5f0d7be8046afa50b0436fb7c582d1db776785f28c5ba50b31a0a438dda92

                                          SHA512

                                          60e2b06f0d3692f75949bce5ae8845182f7e4e734a793a67ffaa94727ee7714ff063bbc7bf16f735905ededad9e7d862a8082d7c5b7c4b6315fcfaff16bb4ca0

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

                                          Filesize

                                          8KB

                                          MD5

                                          47274a25eb166fb22b1a5311b50940ea

                                          SHA1

                                          f12545ec0bc83273eb697efefa9c917674bf9e2e

                                          SHA256

                                          f76c1c7c8803c45d5993b1866c76e3ddb87c471e681cbac5268388a826e680db

                                          SHA512

                                          71cb68db9d0110d1eb1117ca9ee667fecd0c76b01965580abafc053e79498685bf43a7bd9fbabfa0ca96162886d23649868ca4ced48441efb83ffce6e2e2db13

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

                                          Filesize

                                          15KB

                                          MD5

                                          a0747060e48bc1ba28be9e58dcff0b81

                                          SHA1

                                          d336754cc890ac03a42af4b9ca4f6806c99f6801

                                          SHA256

                                          f7cc1d69a36467deca8c3ddad35dd21fa31c833039d5eb994ea0b47e7b53d4c1

                                          SHA512

                                          7de7a70130610c36b41e501b125587bac289e20f450496d236101024ce6fcb4a066519a941292eadd2a725a48ae70b5ceb596792291d8856e11851a8832f6f12

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

                                          Filesize

                                          235KB

                                          MD5

                                          48cd6b250440f6688c65d260b20f80dd

                                          SHA1

                                          6624ec1f0b1133c32dac81905448809ff901f935

                                          SHA256

                                          68276448e929401417b49b45e2f436a8a4d3c9cec4f3f438f280e22a22ba26fc

                                          SHA512

                                          72b5eaf3528601c09be73400e3f43eb83a1ac7ba1cb05ec5d512bdb44d797cb6804afd006f38b783f2cf0e20ccef13d70723ac8134e2525dfb4fafb2023aca63

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

                                          Filesize

                                          120KB

                                          MD5

                                          6303bc3ddc12c19a8b0509b2b2b6654d

                                          SHA1

                                          2c8ee0d4d0dbae888c96cadc2bacd6bf688622e4

                                          SHA256

                                          7d563b3c4795de8fedaf36c7540e31562478bf86fe4ef765f8b1626eec8ebc49

                                          SHA512

                                          0d622cbede04001d70e851d16ce79b642c51715987d58c5ecc52c54f1a168f8e6358c006bd7148811d190ab705f11e052c923748d6ab45f4c59280e72c415d13

                                        • C:\Users\Admin\Desktop\kreo q zi.exe

                                          Filesize

                                          3.1MB

                                          MD5

                                          28ac02fc40c8f1c2a8989ee3c09a1372

                                          SHA1

                                          b182758b62a1482142c0fce4be78c786e08b7025

                                          SHA256

                                          0fe81f9a51cf0068408de3c3605ce2033a00bd7ec90cc9516c38f6069e06433b

                                          SHA512

                                          2cbf2f6af46e5fae8e67144e1ac70bc748036c7adb7f7810d7d7d9f255ccf5d163cce07f11fb6526f9ab61c39f28bdf2356cc315b19a61cd2115612882eab767

                                        • \??\pipe\crashpad_696_KGXJCNKMEDDBUARW

                                          MD5

                                          d41d8cd98f00b204e9800998ecf8427e

                                          SHA1

                                          da39a3ee5e6b4b0d3255bfef95601890afd80709

                                          SHA256

                                          e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                                          SHA512

                                          cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

                                        • memory/3132-15-0x000000001D7D0000-0x000000001D80C000-memory.dmp

                                          Filesize

                                          240KB

                                        • memory/3132-14-0x000000001CC60000-0x000000001CC72000-memory.dmp

                                          Filesize

                                          72KB

                                        • memory/3132-11-0x000000001CCD0000-0x000000001CD82000-memory.dmp

                                          Filesize

                                          712KB

                                        • memory/3132-10-0x000000001CBC0000-0x000000001CC10000-memory.dmp

                                          Filesize

                                          320KB

                                        • memory/3524-9-0x00007FFEE2A40000-0x00007FFEE3502000-memory.dmp

                                          Filesize

                                          10.8MB

                                        • memory/3524-6-0x00007FFEE2A40000-0x00007FFEE3502000-memory.dmp

                                          Filesize

                                          10.8MB

                                        • memory/3524-5-0x0000000000DF0000-0x0000000001114000-memory.dmp

                                          Filesize

                                          3.1MB

                                        • memory/3524-4-0x00007FFEE2A43000-0x00007FFEE2A45000-memory.dmp

                                          Filesize

                                          8KB