Analysis

  • max time kernel
    1780s
  • max time network
    1796s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15-05-2024 10:00

General

  • Target

    Client-built.exe

  • Size

    3.1MB

  • MD5

    a5ec52e235b51b62737775708aa75b41

  • SHA1

    2fb3d2b31ec5cc4f81d8000ab73e1c42e56d9696

  • SHA256

    36e9de882ef9c44bf0b55c230ae42233a142f5d416c114221b6bc6db2eb8d9db

  • SHA512

    c89a016cae8e27bbc080300834410e72c00279ea74004f52c1c82bb5293c3abdda0b0aa5634b3157cd88bc81acadeeb4e8114789d0dd292273a3d2871ba094dd

  • SSDEEP

    49152:Wv+I22SsaNYfdPBldt698dBcjHR3DkE2HLk/+FMoGdECTHHB72eh2NT:Wvz22SsaNYfdPBldt6+dBcjHR3DMq0

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

FINAL

C2

192.168.1.3:4782

0.tcp.ap.ngrok.io:19777

Mutex

07349335-02d4-4e1c-9997-b1ec2161a0e1

Attributes
  • encryption_key

    DE496BF144B8EBE8F8D89996CC77BEE88B0F6BCB

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    GET FUCKED

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 23 IoCs
  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies data under HKEY_USERS 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 18 IoCs
  • Suspicious use of FindShellTrayWindow 27 IoCs
  • Suspicious use of SendNotifyMessage 24 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Client-built.exe
    "C:\Users\Admin\AppData\Local\Temp\Client-built.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4808
    • 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
      PID:2132
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:5116
    • C:\Program Files\Google\Chrome\Application\chrome.exe
      "C:\Program Files\Google\Chrome\Application\chrome.exe"
      1⤵
      • 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:4668
      • 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:7 --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=110.0.5481.104 --initial-client-data=0x11c,0x120,0x124,0xf8,0x128,0x7ffa48c3ab58,0x7ffa48c3ab68,0x7ffa48c3ab78
        2⤵
          PID:1164
        • C:\Program Files\Google\Chrome\Application\chrome.exe
          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=1700 --field-trial-handle=1928,i,6736188313312510419,5939220661036732304,131072 /prefetch:2
          2⤵
            PID:1316
          • 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 --mojo-platform-channel-handle=2252 --field-trial-handle=1928,i,6736188313312510419,5939220661036732304,131072 /prefetch:8
            2⤵
              PID:1976
            • 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 --mojo-platform-channel-handle=2320 --field-trial-handle=1928,i,6736188313312510419,5939220661036732304,131072 /prefetch:8
              2⤵
                PID:1856
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --first-renderer-process --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --mojo-platform-channel-handle=1720 --field-trial-handle=1928,i,6736188313312510419,5939220661036732304,131072 /prefetch:1
                2⤵
                  PID:2948
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=3080 --field-trial-handle=1928,i,6736188313312510419,5939220661036732304,131072 /prefetch:1
                  2⤵
                    PID:828
                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --mojo-platform-channel-handle=4324 --field-trial-handle=1928,i,6736188313312510419,5939220661036732304,131072 /prefetch:1
                    2⤵
                      PID:2240
                    • 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 --mojo-platform-channel-handle=4516 --field-trial-handle=1928,i,6736188313312510419,5939220661036732304,131072 /prefetch:8
                      2⤵
                        PID:5088
                      • 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 --mojo-platform-channel-handle=4580 --field-trial-handle=1928,i,6736188313312510419,5939220661036732304,131072 /prefetch:8
                        2⤵
                          PID:5112
                        • 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 --mojo-platform-channel-handle=4816 --field-trial-handle=1928,i,6736188313312510419,5939220661036732304,131072 /prefetch:8
                          2⤵
                            PID:2144
                          • 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 --mojo-platform-channel-handle=4852 --field-trial-handle=1928,i,6736188313312510419,5939220661036732304,131072 /prefetch:8
                            2⤵
                              PID:3068
                            • 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 --mojo-platform-channel-handle=4688 --field-trial-handle=1928,i,6736188313312510419,5939220661036732304,131072 /prefetch:8
                              2⤵
                                PID:1720
                            • C:\Program Files\Google\Chrome\Application\110.0.5481.104\elevation_service.exe
                              "C:\Program Files\Google\Chrome\Application\110.0.5481.104\elevation_service.exe"
                              1⤵
                                PID:2464

                              Network

                              MITRE ATT&CK Enterprise v15

                              Replay Monitor

                              Loading Replay Monitor...

                              Downloads

                              • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\GPUCache\data_1

                                Filesize

                                264KB

                                MD5

                                f50f89a0a91564d0b8a211f8921aa7de

                                SHA1

                                112403a17dd69d5b9018b8cede023cb3b54eab7d

                                SHA256

                                b1e963d702392fb7224786e7d56d43973e9b9efd1b89c17814d7c558ffc0cdec

                                SHA512

                                bf8cda48cf1ec4e73f0dd1d4fa5562af1836120214edb74957430cd3e4a2783e801fa3f4ed2afb375257caeed4abe958265237d6e0aacf35a9ede7a2e8898d58

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

                                Filesize

                                1KB

                                MD5

                                8ac409f85b2fcd4fa5a1ccec8cc64c15

                                SHA1

                                27f149c197c3c006803cbebf5ad67f8619840af1

                                SHA256

                                c19b4cd3bd40d9b1315e0c8dcbe98f482d590341c1dbcc60c9e41b846976d177

                                SHA512

                                7a3dc8e3eb513716cc9612052c3159a9c8b39d3adebb99c502556d9789bdb60caf1d76cb58ae5037476b90b303014f60182846be0afd938c87163bcd659c005b

                              • 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

                                c02a800e3aba902b4cf0d0c328ad8a52

                                SHA1

                                e04f3d79dee81536c3d8806092e0e539ac812665

                                SHA256

                                b995706bf6f714b0ea75ff91f8cd8f375e01cd19e3767501513faea7b86081cc

                                SHA512

                                243e4f92349edbf5978be16caa25c1cb801dcb2f29b1a3219f5b9b1d9c71bfda2b609fce30819d65142e1269341fef5d207f9c811f6fa676e00e9d4b828ba5d6

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

                                Filesize

                                6KB

                                MD5

                                8bdac59e386cc117b38842eb969bae33

                                SHA1

                                1708cd289fd4ae176bf9ac067f3209867023dbb8

                                SHA256

                                990766ba5cdffe38c35f300823cc5c3422d2eba8a5f8d723371b33952f8bdc06

                                SHA512

                                0d03ed7a50d584e680abb8cbf220acf1448deaeb7896a6d9c155e288d40b850abb7ad89fe7397c84f9aae796bca3bd8d130229ffc03cf4b8ae860ac51d38d134

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

                                Filesize

                                16KB

                                MD5

                                19f6f31dac36a26c990ff043f63b0747

                                SHA1

                                ab6cff9130d5711f63374b006b6eed9e2cf41cb8

                                SHA256

                                4a3871b9b9ad65d02d7b348a4deab2cb5c1a95207f611512eba3c7689eb196e9

                                SHA512

                                a02eff385483bb5831f3d984833e1fd65c5699ff82e01c76c0e77fee4ea8ad0da54f399e34f382a1d0c2325ad42d1bcedf95b3acb2dac00fa826ae12b5b0c733

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

                                Filesize

                                259KB

                                MD5

                                7e4b611d47a518ce5fef9b77b6d423c1

                                SHA1

                                838be013a205af747d3b591b6e2ee14b450bcd35

                                SHA256

                                c06eb47615fd2514356c4d3b2e5a093f59d9680590e83d94a106dbe4eae87d65

                                SHA512

                                3031cfe0f8c7d286e1814552563265d9f55b30fed8d1df8632ea93c5a0632c776f43458bf2ade898089d909008ec862b045a92f8754c2982092ff46eddb7ac53

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

                                Filesize

                                257KB

                                MD5

                                13ebc292c1431f5675bc48749193aaab

                                SHA1

                                7329f1a4d51c697e6c5fd92449138c80197c0452

                                SHA256

                                cb2682335844227e6d5186090e83327b254b8df9ed4f03b536377ba12dd28294

                                SHA512

                                ccfc6221b5c94b7b5fe61e33b286ccf57f6804a8cf0564395ba63af2bacae710f439bee3d5e4397341ad585995fc6e4691013b5e626ff89522973bab72c95072

                              • C:\Users\Admin\AppData\Roaming\SubDir\Client.exe

                                Filesize

                                3.1MB

                                MD5

                                a5ec52e235b51b62737775708aa75b41

                                SHA1

                                2fb3d2b31ec5cc4f81d8000ab73e1c42e56d9696

                                SHA256

                                36e9de882ef9c44bf0b55c230ae42233a142f5d416c114221b6bc6db2eb8d9db

                                SHA512

                                c89a016cae8e27bbc080300834410e72c00279ea74004f52c1c82bb5293c3abdda0b0aa5634b3157cd88bc81acadeeb4e8114789d0dd292273a3d2871ba094dd

                              • \??\pipe\crashpad_4668_BNNLWTWNBSNELGLY

                                MD5

                                d41d8cd98f00b204e9800998ecf8427e

                                SHA1

                                da39a3ee5e6b4b0d3255bfef95601890afd80709

                                SHA256

                                e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                                SHA512

                                cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

                              • memory/2132-12-0x000000001BD10000-0x000000001BDC2000-memory.dmp

                                Filesize

                                712KB

                              • memory/2132-13-0x00007FFA4C3A0000-0x00007FFA4CE61000-memory.dmp

                                Filesize

                                10.8MB

                              • memory/2132-11-0x000000001BC00000-0x000000001BC50000-memory.dmp

                                Filesize

                                320KB

                              • memory/2132-10-0x00007FFA4C3A0000-0x00007FFA4CE61000-memory.dmp

                                Filesize

                                10.8MB

                              • memory/2132-8-0x00007FFA4C3A0000-0x00007FFA4CE61000-memory.dmp

                                Filesize

                                10.8MB

                              • memory/4808-0-0x00007FFA4C3A3000-0x00007FFA4C3A5000-memory.dmp

                                Filesize

                                8KB

                              • memory/4808-9-0x00007FFA4C3A0000-0x00007FFA4CE61000-memory.dmp

                                Filesize

                                10.8MB

                              • memory/4808-2-0x00007FFA4C3A0000-0x00007FFA4CE61000-memory.dmp

                                Filesize

                                10.8MB

                              • memory/4808-1-0x0000000000720000-0x0000000000A44000-memory.dmp

                                Filesize

                                3.1MB