Resubmissions

28-05-2024 02:35

240528-c3cl8acg65 10

28-05-2024 02:34

240528-c2ncbsbe8y 10

Analysis

  • max time kernel
    145s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-05-2024 02:34

General

  • Target

    SynapseX Revamped V1.5/SynapseXBootstrapper.exe

  • Size

    3.1MB

  • MD5

    9434a1822088cedbce057d280c235864

  • SHA1

    c09173a18e5ae2d9d38bd4d3d196adf1423f924e

  • SHA256

    de29011246319ec8b60774d8c4cad4e8299e27eba6dc7699cd257fbdda338336

  • SHA512

    7461b706ef796abc96d7f2549091061910fdf81a77ae0f8d0c20c5de870164410f5dd3b68e3e33a5bb9b77c3ccf59fd787164530b6d2d03688d4dceccb4fb632

  • SSDEEP

    49152:PvnI22SsaNYfdPBldt698dBcjHHeJ/uBx3ioGdyTHHB72eh2NT:PvI22SsaNYfdPBldt6+dBcjH4/X

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Windows Update

C2

skbidiooiilet-31205.portmap.host:31205

Mutex

b2f09b33-2e5b-4ffa-afbf-3f1aaed274a6

Attributes
  • encryption_key

    6F721445F7E0B1CF58980D84A9D49F4458D4EFD9

  • install_name

    Update.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    WindowsUpdate

  • subdirectory

    Windows Update

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Creates scheduled task(s) 1 TTPs 2 IoCs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 26 IoCs
  • Suspicious use of SendNotifyMessage 24 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:\Users\Admin\AppData\Local\Temp\SynapseX Revamped V1.5\SynapseXBootstrapper.exe
    "C:\Users\Admin\AppData\Local\Temp\SynapseX Revamped V1.5\SynapseXBootstrapper.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4572
    • C:\Windows\SYSTEM32\schtasks.exe
      "schtasks" /create /tn "WindowsUpdate" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Windows Update\Update.exe" /rl HIGHEST /f
      2⤵
      • Creates scheduled task(s)
      PID:1436
    • C:\Users\Admin\AppData\Roaming\Windows Update\Update.exe
      "C:\Users\Admin\AppData\Roaming\Windows Update\Update.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1820
      • C:\Windows\SYSTEM32\schtasks.exe
        "schtasks" /create /tn "WindowsUpdate" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Windows Update\Update.exe" /rl HIGHEST /f
        3⤵
        • Creates scheduled task(s)
        PID:1876
  • C:\Windows\System32\svchost.exe
    C:\Windows\System32\svchost.exe -k UnistackSvcGroup
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3500
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --profile-directory=Default
    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:1276
    • 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=0x11c,0x120,0x124,0xf8,0x128,0x7ffc00a046f8,0x7ffc00a04708,0x7ffc00a04718
      2⤵
        PID:3704
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2152,14748075775162264916,1038877916641964821,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2176 /prefetch:2
        2⤵
          PID:5008
        • 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=2152,14748075775162264916,1038877916641964821,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2240 /prefetch:3
          2⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:3772
        • 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=2152,14748075775162264916,1038877916641964821,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2744 /prefetch:8
          2⤵
            PID:1740
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2152,14748075775162264916,1038877916641964821,131072 --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=3420 /prefetch:1
            2⤵
              PID:3488
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2152,14748075775162264916,1038877916641964821,131072 --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=5 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3428 /prefetch:1
              2⤵
                PID:3940
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2152,14748075775162264916,1038877916641964821,131072 --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=4156 /prefetch:1
                2⤵
                  PID:3608
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2152,14748075775162264916,1038877916641964821,131072 --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=5144 /prefetch:1
                  2⤵
                    PID:2636
                • C:\Windows\System32\CompPkgSrv.exe
                  C:\Windows\System32\CompPkgSrv.exe -Embedding
                  1⤵
                    PID:4064
                  • C:\Windows\System32\CompPkgSrv.exe
                    C:\Windows\System32\CompPkgSrv.exe -Embedding
                    1⤵
                      PID:4476

                    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

                      4158365912175436289496136e7912c2

                      SHA1

                      813d11f772b1cfe9ceac2bf37f4f741e5e8fbe59

                      SHA256

                      354de4b033ba6e4d85f94d91230cb8501f62e0a4e302cd4076c7e0ad73bedbd1

                      SHA512

                      74b4f7b24ad4ea395f3a4cd8dbfae54f112a7c87bce3d286ee5161f6b63d62dfa19bb0d96bb7ed1c6d925f5697a2580c25023d5052c6a09992e6fd9dd49ea82b

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

                      Filesize

                      152B

                      MD5

                      ce4c898f8fc7601e2fbc252fdadb5115

                      SHA1

                      01bf06badc5da353e539c7c07527d30dccc55a91

                      SHA256

                      bce2dfaa91f0d44e977e0f79c60e64954a7b9dc828b0e30fbaa67dbe82f750aa

                      SHA512

                      80fff4c722c8d3e69ec4f09510779b7e3518ae60725d2d36903e606a27ec1eaedbdbfac5b662bf2c19194c572ccf0125445f22a907b329ad256e6c00b9cf032c

                    • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\GPUCache\data_1

                      Filesize

                      264KB

                      MD5

                      f50f89a0a91564d0b8a211f8921aa7de

                      SHA1

                      112403a17dd69d5b9018b8cede023cb3b54eab7d

                      SHA256

                      b1e963d702392fb7224786e7d56d43973e9b9efd1b89c17814d7c558ffc0cdec

                      SHA512

                      bf8cda48cf1ec4e73f0dd1d4fa5562af1836120214edb74957430cd3e4a2783e801fa3f4ed2afb375257caeed4abe958265237d6e0aacf35a9ede7a2e8898d58

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

                      Filesize

                      5KB

                      MD5

                      9b85b701f3e75c8f91f74b0d7b2d2462

                      SHA1

                      baa01d7f212ea92603b705f16dadd66eb70ee40e

                      SHA256

                      f61ceddbbb3c89b96f0a1ce321fe9da83569a5914fcccd1dde848e438cc785be

                      SHA512

                      c42575271b0b30c29de60ac2d20bdba88dc2c01458d99ae4145bda3cf996a28e93b94778110a31a0c72dbde54f2ed41a99996cc41d26f1db36bd12ab36a9514b

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

                      Filesize

                      6KB

                      MD5

                      34faf39f52444b4e50e7a8048928df14

                      SHA1

                      215ca9e3b64574d1f819ab238c2d8a288cc582f8

                      SHA256

                      474ee645c73c81d3e47ee9d35b5c0545fe096bd1c23e0b38d94f949bf513eb12

                      SHA512

                      a0aee18a1a2d14e538bafdf985fa6079e979428821c4130f393879a203b8de0a183134edd87d0b5b7512aa2dffed2f0e0173c42a1eee4e4ea4feb1063e77d3f1

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

                      Filesize

                      11KB

                      MD5

                      06a6cba93144cfe1d1ae1c09618ca59c

                      SHA1

                      4c9c2363490e24d8389e56808382b66889c92559

                      SHA256

                      53a2ccf1c570b466b9d7752be6043d9a11419a3c1b96c513f09e17108b894e12

                      SHA512

                      ec579a3d55326e99c1cc36712d128b2b3410269dc3b93e3dbd75d81eca72364e4107b55ee25f8e770e920dd88f8391ebb18129ee1766f49ba19c9af56f95f218

                    • C:\Users\Admin\AppData\Roaming\Windows Update\Update.exe

                      Filesize

                      3.1MB

                      MD5

                      9434a1822088cedbce057d280c235864

                      SHA1

                      c09173a18e5ae2d9d38bd4d3d196adf1423f924e

                      SHA256

                      de29011246319ec8b60774d8c4cad4e8299e27eba6dc7699cd257fbdda338336

                      SHA512

                      7461b706ef796abc96d7f2549091061910fdf81a77ae0f8d0c20c5de870164410f5dd3b68e3e33a5bb9b77c3ccf59fd787164530b6d2d03688d4dceccb4fb632

                    • \??\pipe\LOCAL\crashpad_1276_FNDTLZQXECTZHGNE

                      MD5

                      d41d8cd98f00b204e9800998ecf8427e

                      SHA1

                      da39a3ee5e6b4b0d3255bfef95601890afd80709

                      SHA256

                      e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                      SHA512

                      cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

                    • memory/1820-11-0x00007FFC0ADF0000-0x00007FFC0B8B1000-memory.dmp

                      Filesize

                      10.8MB

                    • memory/1820-14-0x00007FFC0ADF0000-0x00007FFC0B8B1000-memory.dmp

                      Filesize

                      10.8MB

                    • memory/1820-13-0x000000001BBE0000-0x000000001BC92000-memory.dmp

                      Filesize

                      712KB

                    • memory/1820-12-0x000000001BAD0000-0x000000001BB20000-memory.dmp

                      Filesize

                      320KB

                    • memory/1820-10-0x00007FFC0ADF0000-0x00007FFC0B8B1000-memory.dmp

                      Filesize

                      10.8MB

                    • memory/3500-53-0x00000244E7310000-0x00000244E7311000-memory.dmp

                      Filesize

                      4KB

                    • memory/3500-64-0x00000244E6F20000-0x00000244E6F21000-memory.dmp

                      Filesize

                      4KB

                    • memory/3500-50-0x00000244E7310000-0x00000244E7311000-memory.dmp

                      Filesize

                      4KB

                    • memory/3500-51-0x00000244E7310000-0x00000244E7311000-memory.dmp

                      Filesize

                      4KB

                    • memory/3500-52-0x00000244E7310000-0x00000244E7311000-memory.dmp

                      Filesize

                      4KB

                    • memory/3500-15-0x00000244DEC40000-0x00000244DEC50000-memory.dmp

                      Filesize

                      64KB

                    • memory/3500-54-0x00000244E7310000-0x00000244E7311000-memory.dmp

                      Filesize

                      4KB

                    • memory/3500-55-0x00000244E7310000-0x00000244E7311000-memory.dmp

                      Filesize

                      4KB

                    • memory/3500-56-0x00000244E7310000-0x00000244E7311000-memory.dmp

                      Filesize

                      4KB

                    • memory/3500-57-0x00000244E7310000-0x00000244E7311000-memory.dmp

                      Filesize

                      4KB

                    • memory/3500-59-0x00000244E6F20000-0x00000244E6F21000-memory.dmp

                      Filesize

                      4KB

                    • memory/3500-58-0x00000244E6F30000-0x00000244E6F31000-memory.dmp

                      Filesize

                      4KB

                    • memory/3500-61-0x00000244E6F30000-0x00000244E6F31000-memory.dmp

                      Filesize

                      4KB

                    • memory/3500-49-0x00000244E7310000-0x00000244E7311000-memory.dmp

                      Filesize

                      4KB

                    • memory/3500-67-0x00000244E6E60000-0x00000244E6E61000-memory.dmp

                      Filesize

                      4KB

                    • memory/3500-79-0x00000244E7060000-0x00000244E7061000-memory.dmp

                      Filesize

                      4KB

                    • memory/3500-81-0x00000244E7070000-0x00000244E7071000-memory.dmp

                      Filesize

                      4KB

                    • memory/3500-82-0x00000244E7070000-0x00000244E7071000-memory.dmp

                      Filesize

                      4KB

                    • memory/3500-83-0x00000244E7180000-0x00000244E7181000-memory.dmp

                      Filesize

                      4KB

                    • memory/3500-48-0x00000244E7310000-0x00000244E7311000-memory.dmp

                      Filesize

                      4KB

                    • memory/3500-47-0x00000244E72E0000-0x00000244E72E1000-memory.dmp

                      Filesize

                      4KB

                    • memory/3500-31-0x00000244DED40000-0x00000244DED50000-memory.dmp

                      Filesize

                      64KB

                    • memory/4572-0-0x00007FFC0ADF3000-0x00007FFC0ADF5000-memory.dmp

                      Filesize

                      8KB

                    • memory/4572-9-0x00007FFC0ADF0000-0x00007FFC0B8B1000-memory.dmp

                      Filesize

                      10.8MB

                    • memory/4572-2-0x00007FFC0ADF0000-0x00007FFC0B8B1000-memory.dmp

                      Filesize

                      10.8MB

                    • memory/4572-1-0x0000000000510000-0x0000000000834000-memory.dmp

                      Filesize

                      3.1MB