Analysis

  • max time kernel
    5s
  • max time network
    103s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/09/2024, 04:31

General

  • Target
    67bbc1928d17c5120b2ca7de1ee3b6b0N.exe
  • Size 2.0MB
  • Sample240910-e5va6aycre
  • SHA256 5ce98a267550b2a6227179bbd80533ffb61a5b049eac2ea8f5a54ded8d102f8a
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • azorult

C2
  • http://0x21.in:8000/_az/

Extracted

Family
  • quasar

Version
  • 1.3.0.0

Botnet
  • EbayProfiles

C2
  • 5.8.88.191:443

  • sockartek.icu:443

Mutex
  • QSR_MUTEX_0kBRNrRz5TDLEQouI0

Attributes
  • encryption_key

    MWhG6wsClMX8aJM2CVXT

  • install_name

    winsock.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    win defender run

  • subdirectory

    SubDir

Signatures

  • Azorult

    An information stealer that was first discovered in 2016, targeting browsing history and passwords.

  • Quasar RAT 3 IoCs

    Quasar is an open source Remote Access Tool.

  • Quasar payload 3 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 4 IoCs
  • Enumerates connected drives 3 TTPs 23 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Looks up external IP address via web service 2 IoCs

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

  • AutoIT Executable 1 IoCs

    AutoIT scripts compiled to PE executables.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 4 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 9 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 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Runs ping.exe 1 TTPs 2 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 6 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\67bbc1928d17c5120b2ca7de1ee3b6b0N.exe
    "C:\Users\Admin\AppData\Local\Temp\67bbc1928d17c5120b2ca7de1ee3b6b0N.exe"
    1⤵
    • Quasar RAT
    • Checks computer location settings
    • Enumerates connected drives
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1696
    • C:\Users\Admin\AppData\Local\Temp\vnc.exe
      "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3364
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
          PID:4752
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3364 -s 548
          3⤵
          • Program crash
          PID:676
      • C:\Users\Admin\AppData\Local\Temp\windef.exe
        "C:\Users\Admin\AppData\Local\Temp\windef.exe"
        2⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4988
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks" /create /tn "win defender run" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\windef.exe" /rl HIGHEST /f
          3⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:1732
        • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
          "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
          3⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:4868
          • C:\Windows\SysWOW64\schtasks.exe
            "schtasks" /create /tn "win defender run" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe" /rl HIGHEST /f
            4⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:1576
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\isl0NrlvK5Jq.bat" "
            4⤵
              PID:3032
              • C:\Windows\SysWOW64\chcp.com
                chcp 65001
                5⤵
                  PID:4708
                • C:\Windows\SysWOW64\PING.EXE
                  ping -n 10 localhost
                  5⤵
                  • System Network Configuration Discovery: Internet Connection Discovery
                  • Runs ping.exe
                  PID:3880
                • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                  "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                  5⤵
                    PID:1820
                    • C:\Windows\SysWOW64\schtasks.exe
                      "schtasks" /create /tn "win defender run" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe" /rl HIGHEST /f
                      6⤵
                      • Scheduled Task/Job: Scheduled Task
                      PID:2888
                    • C:\Windows\SysWOW64\cmd.exe
                      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\hKt2WPyIa7Vd.bat" "
                      6⤵
                        PID:3796
                        • C:\Windows\SysWOW64\chcp.com
                          chcp 65001
                          7⤵
                            PID:1648
                          • C:\Windows\SysWOW64\PING.EXE
                            ping -n 10 localhost
                            7⤵
                            • System Network Configuration Discovery: Internet Connection Discovery
                            • Runs ping.exe
                            PID:2820
                          • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                            "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                            7⤵
                              PID:2036
                              • C:\Windows\SysWOW64\schtasks.exe
                                "schtasks" /create /tn "win defender run" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe" /rl HIGHEST /f
                                8⤵
                                • Scheduled Task/Job: Scheduled Task
                                PID:2380
                          • C:\Windows\SysWOW64\WerFault.exe
                            C:\Windows\SysWOW64\WerFault.exe -u -p 1820 -s 2228
                            6⤵
                            • Program crash
                            PID:1400
                      • C:\Windows\SysWOW64\WerFault.exe
                        C:\Windows\SysWOW64\WerFault.exe -u -p 4868 -s 1992
                        4⤵
                        • Program crash
                        PID:4968
                  • C:\Users\Admin\AppData\Local\Temp\67bbc1928d17c5120b2ca7de1ee3b6b0N.exe
                    "C:\Users\Admin\AppData\Local\Temp\67bbc1928d17c5120b2ca7de1ee3b6b0N.exe"
                    2⤵
                    • System Location Discovery: System Language Discovery
                    PID:2116
                  • C:\Windows\SysWOW64\schtasks.exe
                    "C:\Windows\SysWOW64\schtasks.exe" /create /tn RtkAudioService64 /tr "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe" /sc minute /mo 1 /F
                    2⤵
                    • System Location Discovery: System Language Discovery
                    • Scheduled Task/Job: Scheduled Task
                    PID:2996
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3364 -ip 3364
                  1⤵
                    PID:4964
                  • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                    C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                    1⤵
                    • Executes dropped EXE
                    • System Location Discovery: System Language Discovery
                    • Suspicious behavior: EnumeratesProcesses
                    PID:1848
                    • C:\Users\Admin\AppData\Local\Temp\vnc.exe
                      "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
                      2⤵
                        PID:4216
                        • C:\Windows\system32\svchost.exe
                          C:\Windows\system32\svchost.exe -k
                          3⤵
                            PID:3628
                          • C:\Windows\SysWOW64\WerFault.exe
                            C:\Windows\SysWOW64\WerFault.exe -u -p 4216 -s 520
                            3⤵
                            • Program crash
                            PID:2036
                        • C:\Users\Admin\AppData\Local\Temp\windef.exe
                          "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                          2⤵
                            PID:608
                          • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                            "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
                            2⤵
                              PID:3556
                            • C:\Windows\SysWOW64\schtasks.exe
                              "C:\Windows\SysWOW64\schtasks.exe" /create /tn RtkAudioService64 /tr "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe" /sc minute /mo 1 /F
                              2⤵
                              • Scheduled Task/Job: Scheduled Task
                              PID:1036
                          • C:\Windows\SysWOW64\WerFault.exe
                            C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4216 -ip 4216
                            1⤵
                              PID:4688
                            • C:\Windows\SysWOW64\WerFault.exe
                              C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 4868 -ip 4868
                              1⤵
                                PID:1232
                              • C:\Windows\SysWOW64\WerFault.exe
                                C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 1820 -ip 1820
                                1⤵
                                  PID:4712
                                • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
                                  "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
                                  1⤵
                                    PID:4480
                                  • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
                                    "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
                                    1⤵
                                      PID:4296

                                    Network

                                          MITRE ATT&CK Enterprise v15

                                          Replay Monitor

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                                          Downloads

                                          windef.exe.log

                                          • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\windef.exe.log
                                          • Size 1KB
                                          • SHA256 f49dbd55029bfbc15134f7c6a4f967d6c39142c63f2e8f1f8c78fab108a2c928
                                          • MD5 SHA1 SHA512

                                          hKt2WPyIa7Vd.bat

                                          • Path C:\Users\Admin\AppData\Local\Temp\hKt2WPyIa7Vd.bat
                                          • Size 208B
                                          • SHA256 0f84a22abde8b4f586cd80c24dcf62c39ec2252eb2664ad64c3a1fe535ecfece
                                          • MD5 SHA1 SHA512

                                          isl0NrlvK5Jq.bat

                                          • Path C:\Users\Admin\AppData\Local\Temp\isl0NrlvK5Jq.bat
                                          • Size 208B
                                          • SHA256 2b7b7104b7872f0978e095adf303ccc5be94429b69a8895c11ba2d029b8ceaca
                                          • MD5 SHA1 SHA512

                                          vnc.exe

                                          • Path C:\Users\Admin\AppData\Local\Temp\vnc.exe
                                          • Size 405KB
                                          • SHA256 4e8a99cd33c9e5c747a3ce8f1a3e17824846f4a8f7cb0631aebd0815db2ce3a4
                                          • MD5 SHA1 SHA512 SSDEEP

                                          windef.exe

                                          • Path C:\Users\Admin\AppData\Local\Temp\windef.exe
                                          • Size 349KB
                                          • SHA256 7050608d53f80269df951d00883ed79815c060ce7678a76b5c3f6a2a985beea9
                                          • MD5 SHA1 SHA512 SSDEEP

                                          09-10-2024

                                          • Path C:\Users\Admin\AppData\Roaming\Logs\09-10-2024
                                          • Size 224B
                                          • SHA256 51fa97cdee76f4c5aeb8419222ada128f3b9e8ef0ca2ba4f9907abbc2e93c816
                                          • MD5 SHA1 SHA512

                                          09-10-2024

                                          • Path C:\Users\Admin\AppData\Roaming\Logs\09-10-2024
                                          • Size 224B
                                          • SHA256 8fcef21c39ebdd4aa1b54ecf894453d82b4e1ea5c4db3950dd8a1e74159c7a06
                                          • MD5 SHA1 SHA512

                                          SystemPropertiesPerformance.exe

                                          • Path C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                                          • Size 2.0MB
                                          • SHA256 b4327778ab849f7eff30155b411e87dd15f917334ce5bf7923fcec2d65253d25
                                          • MD5 SHA1 SHA512 SSDEEP

                                          memory/1696-19-0x0000000004360000-0x0000000004361000-memory.dmp

                                          memory/2116-28-0x0000000000170000-0x0000000000190000-memory.dmp

                                          memory/2116-20-0x0000000000170000-0x0000000000190000-memory.dmp

                                          memory/3556-73-0x0000000000400000-0x0000000000420000-memory.dmp

                                          memory/3556-67-0x0000000000400000-0x0000000000420000-memory.dmp

                                          memory/4868-45-0x0000000006AD0000-0x0000000006ADA000-memory.dmp

                                          memory/4988-29-0x0000000072B8E000-0x0000000072B8F000-memory.dmp

                                          memory/4988-37-0x0000000005CD0000-0x0000000005D0C000-memory.dmp

                                          memory/4988-36-0x0000000004FD0000-0x0000000004FE2000-memory.dmp

                                          memory/4988-35-0x0000000004AC0000-0x0000000004B26000-memory.dmp

                                          memory/4988-34-0x0000000004B80000-0x0000000004C12000-memory.dmp

                                          memory/4988-33-0x0000000005000000-0x00000000055A4000-memory.dmp

                                          memory/4988-32-0x0000000000010000-0x000000000006E000-memory.dmp