Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16-12-2024 18:45

General

  • Target

    Client-built.exe

  • Size

    348KB

  • MD5

    1b3caea7f3034ec10eecb722a369c652

  • SHA1

    7bf564e5695c879a823068f19b9c5b25d9c3ed53

  • SHA256

    4ca77febd10fb2e3a0ebd202ffd7efb798912d80c76ebdbc76b68b7b59de115a

  • SHA512

    96d59d9a0bca26121ea0643840a3c568fb5ee5fa21cb4e6278cb229ad9b34c9445c22f406daa3c8c11f84f30995064612a1e24eff3211878eae2fd5c5b81a646

  • SSDEEP

    6144:9MNHXf500ME3EaGbbJ23fR34sZh85r+UxRXNO:ud50LNqR3nh8l+UxRXNO

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Meedo

C2

2.tcp.eu.ngrok.io:8080

2.tcp.eu.ngrok.io:13677

Mutex

QSR_MUTEX_F7GTMqsQBGCZlMGQ5p

Attributes
  • encryption_key

    U2vyTIQERz1Bf5527M3K

  • install_name

    win.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Windows Runtime

  • subdirectory

    Subdir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar family
  • Quasar payload 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 1 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • 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 8 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Runs ping.exe 1 TTPs 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 4 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 25 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⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1920
    • C:\Windows\SysWOW64\schtasks.exe
      "schtasks" /create /tn "Windows Runtime" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\Client-built.exe" /rl HIGHEST /f
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2128
    • C:\Users\Admin\AppData\Roaming\Subdir\win.exe
      "C:\Users\Admin\AppData\Roaming\Subdir\win.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:5048
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks" /create /tn "Windows Runtime" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Subdir\win.exe" /rl HIGHEST /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:4660
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument http://roblox.com/
        3⤵
        • Enumerates system info in registry
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of WriteProcessMemory
        PID:1076
        • 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,0x100,0x104,0xd8,0x108,0x7fff4add46f8,0x7fff4add4708,0x7fff4add4718
          4⤵
            PID:1532
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2076,10804614254819325838,9194159791669147399,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2104 /prefetch:2
            4⤵
              PID:3632
            • 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=2076,10804614254819325838,9194159791669147399,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2412 /prefetch:3
              4⤵
                PID:1344
              • 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=2076,10804614254819325838,9194159791669147399,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2896 /prefetch:8
                4⤵
                  PID:5076
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2076,10804614254819325838,9194159791669147399,131072 --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=3340 /prefetch:1
                  4⤵
                    PID:5084
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2076,10804614254819325838,9194159791669147399,131072 --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=3388 /prefetch:1
                    4⤵
                      PID:2196
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2076,10804614254819325838,9194159791669147399,131072 --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=4868 /prefetch:1
                      4⤵
                        PID:4420
                      • 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=2076,10804614254819325838,9194159791669147399,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4036 /prefetch:8
                        4⤵
                          PID:4944
                        • 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=2076,10804614254819325838,9194159791669147399,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4036 /prefetch:8
                          4⤵
                          • Suspicious behavior: EnumeratesProcesses
                          PID:2372
                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2076,10804614254819325838,9194159791669147399,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=9 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3996 /prefetch:1
                          4⤵
                            PID:2420
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2076,10804614254819325838,9194159791669147399,131072 --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=10 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5456 /prefetch:1
                            4⤵
                              PID:1772
                            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2076,10804614254819325838,9194159791669147399,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=11 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5260 /prefetch:1
                              4⤵
                                PID:1888
                              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2076,10804614254819325838,9194159791669147399,131072 --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=12 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5792 /prefetch:1
                                4⤵
                                  PID:4224
                              • C:\Windows\SysWOW64\schtasks.exe
                                "schtasks" /delete /tn "Windows Runtime" /f
                                3⤵
                                • System Location Discovery: System Language Discovery
                                PID:3836
                              • C:\Windows\SysWOW64\cmd.exe
                                C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\LvkX4LQc6UnD.bat" "
                                3⤵
                                • System Location Discovery: System Language Discovery
                                PID:4744
                                • C:\Windows\SysWOW64\chcp.com
                                  chcp 65001
                                  4⤵
                                  • System Location Discovery: System Language Discovery
                                  PID:5096
                                • C:\Windows\SysWOW64\PING.EXE
                                  ping -n 10 localhost
                                  4⤵
                                  • System Location Discovery: System Language Discovery
                                  • System Network Configuration Discovery: Internet Connection Discovery
                                  • Runs ping.exe
                                  PID:2836
                          • C:\Windows\System32\CompPkgSrv.exe
                            C:\Windows\System32\CompPkgSrv.exe -Embedding
                            1⤵
                              PID:4744
                            • C:\Windows\System32\CompPkgSrv.exe
                              C:\Windows\System32\CompPkgSrv.exe -Embedding
                              1⤵
                                PID:1716

                              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

                                34d2c4f40f47672ecdf6f66fea242f4a

                                SHA1

                                4bcad62542aeb44cae38a907d8b5a8604115ada2

                                SHA256

                                b214e3affb02a2ea4469a8bbdfa8a179e7cc57cababd83b4bafae9cdbe23fa33

                                SHA512

                                50fba54ec95d694211a005d0e3e6cf5b5677efa16989cbf854207a1a67e3a139f32b757c6f2ce824a48f621440b93fde60ad1dc790fcec4b76edddd0d92a75d6

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

                                Filesize

                                152B

                                MD5

                                8749e21d9d0a17dac32d5aa2027f7a75

                                SHA1

                                a5d555f8b035c7938a4a864e89218c0402ab7cde

                                SHA256

                                915193bd331ee9ea7c750398a37fbb552b8c5a1d90edec6293688296bda6f304

                                SHA512

                                c645a41180ed01e854f197868283f9b40620dbbc813a1c122f6870db574ebc1c4917da4d320bdfd1cc67f23303a2c6d74e4f36dd9d3ffcfa92d3dfca3b7ca31a

                              • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Code Cache\js\index-dir\the-real-index

                                Filesize

                                1KB

                                MD5

                                967adc1c06f255759f998b73eada6546

                                SHA1

                                87e1d0b6b3e153544b840767f30529d04340a9c6

                                SHA256

                                ffcc61c3ef05ecc7bcf51f413179b8b849d212a6f35a0b4eb147b1d671094987

                                SHA512

                                00aa0929def5207c90251f310b2b4e3ad1039211e7b8480b2d57713792ed97da701aa975e11a07d9713504da24a537a3690a1c24afad346ef9831d66c5ab3023

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

                                Filesize

                                5KB

                                MD5

                                10b0b3447e575d596e8bc0203c739c9b

                                SHA1

                                44f605213974731e7e4d6854c9687840d7cb7e80

                                SHA256

                                64e66fa3661d85822e5629a5d4393943687eed35e522121389339fbd2e98bd25

                                SHA512

                                b2ba3e28c1be15678284d5cbaea7743eb5ac2f27497949b08d69643c8bb9210a27189dabdc049525f24f2a7c70d38f8272ee3e11c1c598b46df6ad36bacbda4c

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

                                Filesize

                                6KB

                                MD5

                                9e58ea3f83460950bf27ee5e3d9f94dc

                                SHA1

                                759e487f74349ae861c6f330734c41e9d58a3e1a

                                SHA256

                                322d955f0182a18f9cfa48f80860d8c93caaf5a657f33ee34af475d77950dc92

                                SHA512

                                5c7dee2c53144e4014b81f2ff4432a0f1498e833a59923a9d66c57ea413828dde334000b26f9f29dd2d7679dafc808c86e2010a3ce8a17f731e0470461d87748

                              • 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

                                0c0c2e2b6b1b320fcbb59cbc378bc7f7

                                SHA1

                                ac14abfcc81913d6e0c8ad59807da2391bd5315c

                                SHA256

                                cf4e5830cfb78c1aeb6ce385b95a83a8a97fdb630fc617187a50ad129a64d973

                                SHA512

                                da50d29c08aa2617a6fda760fcb1f39e03c0db82c65d89395f0e748cc1ecc8e9de35c63ab08823ecacfcfdc787ecc74946c597bbadfa8f134ed5d5fda2860c06

                              • C:\Users\Admin\AppData\Local\Temp\LvkX4LQc6UnD.bat

                                Filesize

                                259B

                                MD5

                                ec90a3136d456ae9dc5a4e6053e9c4d6

                                SHA1

                                abc806cd87e5c8a3e096ab35e2aa74aff8c1a794

                                SHA256

                                9bb146265b84e13fdc6c6419df1d4cc80104180441adc75003c5c086d0ae419a

                                SHA512

                                7fa6e95eed009229ff58f18c31fa06d6af66648d8bdfec39565b967439a0381720aefd4570d5326366c7aa95dac6a5ab9a356a0425a7c7baf5cfa89561a9cb7e

                              • C:\Users\Admin\AppData\Roaming\Logs\12-16-~1

                                Filesize

                                224B

                                MD5

                                418bf365c73a34b5816a49801bddd211

                                SHA1

                                a8202fdce60cc9aaf3cb339554c805747104fa09

                                SHA256

                                b7913ca247415201d91e87fc2c99141497b386c780c7f069e4d3c9a920efd7e0

                                SHA512

                                28c7c41b3aed3b4f1b619ba0e8147cfbf65618b7b6077fc5a270d3d7d185fa5de566211ca0a503c2b8cb4b3acc47a8c2fbdf8f25771ccb765df21f2453625898

                              • C:\Users\Admin\AppData\Roaming\Subdir\win.exe

                                Filesize

                                348KB

                                MD5

                                1b3caea7f3034ec10eecb722a369c652

                                SHA1

                                7bf564e5695c879a823068f19b9c5b25d9c3ed53

                                SHA256

                                4ca77febd10fb2e3a0ebd202ffd7efb798912d80c76ebdbc76b68b7b59de115a

                                SHA512

                                96d59d9a0bca26121ea0643840a3c568fb5ee5fa21cb4e6278cb229ad9b34c9445c22f406daa3c8c11f84f30995064612a1e24eff3211878eae2fd5c5b81a646

                              • memory/1920-6-0x0000000005EB0000-0x0000000005EC2000-memory.dmp

                                Filesize

                                72KB

                              • memory/1920-0-0x000000007541E000-0x000000007541F000-memory.dmp

                                Filesize

                                4KB

                              • memory/1920-1-0x0000000000740000-0x000000000079E000-memory.dmp

                                Filesize

                                376KB

                              • memory/1920-2-0x0000000005640000-0x0000000005BE4000-memory.dmp

                                Filesize

                                5.6MB

                              • memory/1920-14-0x0000000075410000-0x0000000075BC0000-memory.dmp

                                Filesize

                                7.7MB

                              • memory/1920-3-0x0000000005090000-0x0000000005122000-memory.dmp

                                Filesize

                                584KB

                              • memory/1920-7-0x00000000063F0000-0x000000000642C000-memory.dmp

                                Filesize

                                240KB

                              • memory/1920-4-0x0000000075410000-0x0000000075BC0000-memory.dmp

                                Filesize

                                7.7MB

                              • memory/1920-5-0x00000000052C0000-0x0000000005326000-memory.dmp

                                Filesize

                                408KB

                              • memory/5048-156-0x0000000075410000-0x0000000075BC0000-memory.dmp

                                Filesize

                                7.7MB

                              • memory/5048-18-0x0000000006710000-0x000000000671A000-memory.dmp

                                Filesize

                                40KB

                              • memory/5048-15-0x0000000075410000-0x0000000075BC0000-memory.dmp

                                Filesize

                                7.7MB

                              • memory/5048-16-0x0000000075410000-0x0000000075BC0000-memory.dmp

                                Filesize

                                7.7MB

                              • memory/5048-19-0x0000000075410000-0x0000000075BC0000-memory.dmp

                                Filesize

                                7.7MB