Analysis

  • max time kernel
    61s
  • max time network
    62s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18-12-2024 17:44

General

  • Target

    https://cdn.discordapp.com/attachments/1294340651575541884/1318993323024846943/picgnp.scr?ex=676457c1&is=67630641&hm=9b669ca6030e1ce5b855d034bfd60486448feab2de1dee98bd5a91f14c6ca4d4&

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Image

C2

192.168.56.1:4782

Mutex

312bce56-67e9-4c48-a27a-de306b9dad89

Attributes
  • encryption_key

    691E85B569FC3C88790A081979AAACDC8A8F7C98

  • 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
  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 3 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • 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
  • NTFS ADS 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 8 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 38 IoCs
  • Suspicious use of SendNotifyMessage 25 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 (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --start-maximized --single-argument https://cdn.discordapp.com/attachments/1294340651575541884/1318993323024846943/picgnp.scr?ex=676457c1&is=67630641&hm=9b669ca6030e1ce5b855d034bfd60486448feab2de1dee98bd5a91f14c6ca4d4&
    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:2208
    • 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,0x100,0x104,0xd8,0x108,0x7ffa3e8846f8,0x7ffa3e884708,0x7ffa3e884718
      2⤵
        PID:1396
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2092,6654323770840366474,8015327911605132914,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2084 /prefetch:2
        2⤵
          PID:3308
        • 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=2092,6654323770840366474,8015327911605132914,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2224 /prefetch:3
          2⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:408
        • 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=2092,6654323770840366474,8015327911605132914,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2856 /prefetch:8
          2⤵
            PID:920
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2092,6654323770840366474,8015327911605132914,131072 --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=3320 /prefetch:1
            2⤵
              PID:2648
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2092,6654323770840366474,8015327911605132914,131072 --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=3332 /prefetch:1
              2⤵
                PID:3168
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2092,6654323770840366474,8015327911605132914,131072 --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=4940 /prefetch:1
                2⤵
                  PID:4944
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2092,6654323770840366474,8015327911605132914,131072 --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=4956 /prefetch:1
                  2⤵
                    PID:2388
                  • 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=2092,6654323770840366474,8015327911605132914,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5248 /prefetch:8
                    2⤵
                      PID:4512
                    • 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=2092,6654323770840366474,8015327911605132914,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5248 /prefetch:8
                      2⤵
                      • Suspicious behavior: EnumeratesProcesses
                      PID:4852
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2092,6654323770840366474,8015327911605132914,131072 --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=4184 /prefetch:1
                      2⤵
                        PID:3688
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2092,6654323770840366474,8015327911605132914,131072 --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=3428 /prefetch:1
                        2⤵
                          PID:4360
                        • 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=2092,6654323770840366474,8015327911605132914,131072 --lang=en-US --service-sandbox-type=collections --mojo-platform-channel-handle=4684 /prefetch:8
                          2⤵
                            PID:208
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2092,6654323770840366474,8015327911605132914,131072 --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=5212 /prefetch:1
                            2⤵
                              PID:2624
                            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2092,6654323770840366474,8015327911605132914,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=16 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5636 /prefetch:1
                              2⤵
                                PID:3652
                              • 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=2092,6654323770840366474,8015327911605132914,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5172 /prefetch:8
                                2⤵
                                • Suspicious behavior: EnumeratesProcesses
                                PID:636
                              • C:\Users\Admin\Downloads\picgnp.scr
                                "C:\Users\Admin\Downloads\picgnp.scr" /S
                                2⤵
                                • Checks computer location settings
                                • Executes dropped EXE
                                • System Location Discovery: System Language Discovery
                                PID:4676
                                • C:\Users\Admin\AppData\Local\Temp\RarSFX0\webhook.exe
                                  "C:\Users\Admin\AppData\Local\Temp\RarSFX0\webhook.exe"
                                  3⤵
                                  • Executes dropped EXE
                                  • Suspicious use of AdjustPrivilegeToken
                                  PID:1960
                                  • 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
                                    4⤵
                                    • Scheduled Task/Job: Scheduled Task
                                    PID:4344
                                  • C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
                                    "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
                                    4⤵
                                    • Executes dropped EXE
                                    • Suspicious use of AdjustPrivilegeToken
                                    • Suspicious use of FindShellTrayWindow
                                    • Suspicious use of SendNotifyMessage
                                    • Suspicious use of SetWindowsHookEx
                                    PID:540
                                    • 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
                                      5⤵
                                      • Scheduled Task/Job: Scheduled Task
                                      PID:3968
                            • C:\Windows\System32\CompPkgSrv.exe
                              C:\Windows\System32\CompPkgSrv.exe -Embedding
                              1⤵
                                PID:2624
                              • C:\Windows\System32\CompPkgSrv.exe
                                C:\Windows\System32\CompPkgSrv.exe -Embedding
                                1⤵
                                  PID:1520

                                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

                                  b8880802fc2bb880a7a869faa01315b0

                                  SHA1

                                  51d1a3fa2c272f094515675d82150bfce08ee8d3

                                  SHA256

                                  467b8cd4aacac66557712f9843023dcedefcc26efc746f3e44157bc8dac73812

                                  SHA512

                                  e1c6dba2579357ba70de58968b167d2c529534d24bff70568144270c48ac18a48ee2af2d58d78ae741e5a36958fa78a57955bd2456f1df00b781fc1002e123d2

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

                                  Filesize

                                  152B

                                  MD5

                                  ba6ef346187b40694d493da98d5da979

                                  SHA1

                                  643c15bec043f8673943885199bb06cd1652ee37

                                  SHA256

                                  d86eec91f295dfda8ed1c5fa99de426f2fe359282c7ebf67e3a40be739475d73

                                  SHA512

                                  2e6cc97330be8868d4b9c53be7e12c558f6eb1ac2c4080a611ba6c43561d0c5bb4791b8a11a8c2371599f0ba73ed1d9a7a2ea6dee2ae6a080f1912e0cb1f656c

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

                                  Filesize

                                  6KB

                                  MD5

                                  ce091a92ef772703970762581901aadc

                                  SHA1

                                  f4c84ca439aa69778eb2627d1380424995ebac87

                                  SHA256

                                  d1cb6be4ca7761499c5a632dd2ab1c31ff42796275b551a86deec82fa5b74aed

                                  SHA512

                                  7539d9dbbaeb48dfb24c35db4a191964953e409d67606d66e511f9df912a5000876c22e2a0f93699fc7cfd7be57e06f3c489cdae88229afd0672441fac95a1c9

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

                                  Filesize

                                  5KB

                                  MD5

                                  85e269d6c121c8462ce2fc36c7d2a6fa

                                  SHA1

                                  7f4f14560e3a4c97d5e3e7214dc7052c97284fcc

                                  SHA256

                                  904a2a539987b3b015d2709423231a359863af1bc2c1dfcb2f5ad078df5cfd7d

                                  SHA512

                                  03b1c77a0889066b72990c65e98ff09d3cb12a4a9068a4d817c0ece29cd1a7c394ecdd1ac2436895360b659a25a8fdffdd42ac04a958c2f4dbc4ee7ccae99f3c

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

                                  Filesize

                                  6KB

                                  MD5

                                  8abdba1353c3f0c28ae727d27c09e450

                                  SHA1

                                  f64a5336942351b715a4af7864ff06ccc4ee4528

                                  SHA256

                                  b3d92f649a5567ad18c25ef0e28f123ffe2bab6ca1b04dda1267b7a7852202c8

                                  SHA512

                                  4e3346abc9e9588398baf2f8f7b429a9f7bec766ff807c1e845096ada8c661f4f04a4567e16e2ebe4f0ca50d3b6a59e531868fcd3c0572d9772b585909672bfb

                                • 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

                                  53ef7ae02c74ff6ab700554a8135c6a6

                                  SHA1

                                  a3218b80b4aa44b344a65732a784fdb431068399

                                  SHA256

                                  64a84cd639144fcfa7a7b435742ef0231fd90c38a6a82065e62a35132dd7f4ca

                                  SHA512

                                  d4eea0ea2168c607c9ef96a06f11094005b7cb40f3646f964b7bba295240ed1abd8430edc94c6885ad5d3fe775c82155c8ebbf0c7b5880b65026d35adf8919dd

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

                                  Filesize

                                  10KB

                                  MD5

                                  339088770974c4315e84f1167cb2c760

                                  SHA1

                                  8c347703cec725f0897ead56e8297e3932ac6398

                                  SHA256

                                  6ac579e1a896b4fe70fe1dffca28dd6b077dfab0b80c331f9164d3ebb66b4c1c

                                  SHA512

                                  dcf05c2ffd3f22669fa39e1e11dc5d9bd29625d018b4b18cb5ad14641c681ab72753b8f1b93afc228254b0a1d0f4e47764262f5e77c616dbfcb9e7630b0d79fd

                                • C:\Users\Admin\AppData\Local\Temp\RarSFX0\webhook.exe

                                  Filesize

                                  3.5MB

                                  MD5

                                  170c1a924929ae9a8122a07dd2c9f049

                                  SHA1

                                  cac9b667bf47e41f3a9cf5cdad18a693722db186

                                  SHA256

                                  d58a97681d8eacf7baf47dc04aca5e26012ee2aa53046ae622dd3e32800ceb89

                                  SHA512

                                  45c49bc4d8a313cadbf630ef66e12e88c5f468bf7cff895dbd14500c406a196bdcbaac017e8d05333f1d2361edd850fffe21de43d648610c34878268270dbee9

                                • C:\Users\Admin\Downloads\Unconfirmed 754791.crdownload

                                  Filesize

                                  2.1MB

                                  MD5

                                  3a8a29de38223ee9c9862c3a166a1726

                                  SHA1

                                  42bbd6b7c03b550b237360bb0d2662c1f864a24f

                                  SHA256

                                  10a641ba0c61ca4b529224ad70963a3c96492e24d9fa2cc4ae3d436f1780fa54

                                  SHA512

                                  bc4ae31d0a1f77af9d3eaa81aa27e5f6eb7eccbee7dcd7156b7a863602b94079216825aed22e90b2de1d05e058982a357ebbc30256d7607bf9ae4188716cc6d9

                                • memory/540-109-0x000000001BB70000-0x000000001BBC0000-memory.dmp

                                  Filesize

                                  320KB

                                • memory/540-110-0x000000001BC80000-0x000000001BD32000-memory.dmp

                                  Filesize

                                  712KB

                                • memory/540-125-0x000000001C470000-0x000000001C998000-memory.dmp

                                  Filesize

                                  5.2MB

                                • memory/1960-84-0x0000000000C80000-0x0000000001004000-memory.dmp

                                  Filesize

                                  3.5MB