Analysis

  • max time kernel
    5s
  • max time network
    104s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/08/2024, 09:11

General

  • Target
    f3ad3af5291e86d9c2e9ccb25c1efa60N.exe
  • Size 2.0MB
  • Sample240824-k55d1ssgrf
  • SHA256 19cdefdfcf927637375a3260639085cab720b92b163553eb39e6ba4e4924cdd1
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

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

Extracted

Family
  • azorult

C2
  • http://0x21.in:8000/_az/

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 3 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 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 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 4 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\f3ad3af5291e86d9c2e9ccb25c1efa60N.exe
    "C:\Users\Admin\AppData\Local\Temp\f3ad3af5291e86d9c2e9ccb25c1efa60N.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:680
    • 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:4496
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
          PID:1808
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4496 -s 548
          3⤵
          • Program crash
          PID:4480
      • 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:1972
        • 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:1920
        • 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:4588
          • 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:3324
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\x0KgNqMyxSMD.bat" "
            4⤵
              PID:4460
              • C:\Windows\SysWOW64\chcp.com
                chcp 65001
                5⤵
                  PID:1348
                • C:\Windows\SysWOW64\PING.EXE
                  ping -n 10 localhost
                  5⤵
                  • System Network Configuration Discovery: Internet Connection Discovery
                  • Runs ping.exe
                  PID:2624
                • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                  "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                  5⤵
                    PID:1400
                    • 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:4496
                    • C:\Windows\SysWOW64\cmd.exe
                      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\D35t5QFIEgy2.bat" "
                      6⤵
                        PID:4432
                        • C:\Windows\SysWOW64\chcp.com
                          chcp 65001
                          7⤵
                            PID:1732
                          • C:\Windows\SysWOW64\PING.EXE
                            ping -n 10 localhost
                            7⤵
                            • System Network Configuration Discovery: Internet Connection Discovery
                            • Runs ping.exe
                            PID:1972
                          • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                            "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                            7⤵
                              PID:1284
                              • 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:4980
                          • C:\Windows\SysWOW64\WerFault.exe
                            C:\Windows\SysWOW64\WerFault.exe -u -p 1400 -s 2196
                            6⤵
                            • Program crash
                            PID:2080
                      • C:\Windows\SysWOW64\WerFault.exe
                        C:\Windows\SysWOW64\WerFault.exe -u -p 4588 -s 2260
                        4⤵
                        • Program crash
                        PID:3692
                  • C:\Users\Admin\AppData\Local\Temp\f3ad3af5291e86d9c2e9ccb25c1efa60N.exe
                    "C:\Users\Admin\AppData\Local\Temp\f3ad3af5291e86d9c2e9ccb25c1efa60N.exe"
                    2⤵
                    • System Location Discovery: System Language Discovery
                    PID:3776
                  • 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:5060
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4496 -ip 4496
                  1⤵
                    PID:4380
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 4588 -ip 4588
                    1⤵
                      PID:4120
                    • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                      C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                      1⤵
                        PID:4280
                        • C:\Users\Admin\AppData\Local\Temp\vnc.exe
                          "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
                          2⤵
                            PID:1856
                            • C:\Windows\system32\svchost.exe
                              C:\Windows\system32\svchost.exe -k
                              3⤵
                                PID:4088
                              • C:\Windows\SysWOW64\WerFault.exe
                                C:\Windows\SysWOW64\WerFault.exe -u -p 1856 -s 520
                                3⤵
                                • Program crash
                                PID:4924
                            • C:\Users\Admin\AppData\Local\Temp\windef.exe
                              "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                              2⤵
                                PID:4616
                              • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                                "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
                                2⤵
                                  PID:3796
                                • 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:4532
                              • C:\Windows\SysWOW64\WerFault.exe
                                C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 1856 -ip 1856
                                1⤵
                                  PID:1628
                                • C:\Windows\SysWOW64\WerFault.exe
                                  C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1400 -ip 1400
                                  1⤵
                                    PID:640
                                  • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
                                    "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
                                    1⤵
                                      PID:3768
                                    • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
                                      "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
                                      1⤵
                                        PID:4828

                                      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

                                            D35t5QFIEgy2.bat

                                            • Path C:\Users\Admin\AppData\Local\Temp\D35t5QFIEgy2.bat
                                            • Size 208B
                                            • SHA256 f29c1ca745a855d3ab72c5eb28a101deca7958f98374d238db2d64ebd380f7b1
                                            • 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

                                            x0KgNqMyxSMD.bat

                                            • Path C:\Users\Admin\AppData\Local\Temp\x0KgNqMyxSMD.bat
                                            • Size 208B
                                            • SHA256 0098a719ad5889471a9a434514c33bc9d04d61a4cfba78a2dc55360e7aabc723
                                            • MD5 SHA1 SHA512

                                            08-24-2024

                                            • Path C:\Users\Admin\AppData\Roaming\Logs\08-24-2024
                                            • Size 224B
                                            • SHA256 0b9e76ac6face293d7c8e368e14209e4c90a8c7d69b6f36170d768b9c12fb452
                                            • MD5 SHA1 SHA512

                                            08-24-2024

                                            • Path C:\Users\Admin\AppData\Roaming\Logs\08-24-2024
                                            • Size 224B
                                            • SHA256 e006c4fbef895d58ce5702ce9fb653096e1471ec712497b82aac4d76f9bc61d8
                                            • MD5 SHA1 SHA512

                                            SystemPropertiesPerformance.exe

                                            • Path C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                                            • Size 2.0MB
                                            • SHA256 8d33fb5c4da3371afdb73dbf3283ab22e8b9f71f1340f135cfbd8ec8102ca3e5
                                            • MD5 SHA1 SHA512 SSDEEP

                                            memory/680-19-0x0000000001720000-0x0000000001721000-memory.dmp

                                            memory/1972-29-0x000000007378E000-0x000000007378F000-memory.dmp

                                            memory/1972-36-0x00000000061C0000-0x00000000061D2000-memory.dmp

                                            memory/1972-37-0x0000000006700000-0x000000000673C000-memory.dmp

                                            memory/1972-35-0x00000000055E0000-0x0000000005646000-memory.dmp

                                            memory/1972-34-0x0000000005500000-0x0000000005592000-memory.dmp

                                            memory/1972-33-0x0000000005A10000-0x0000000005FB4000-memory.dmp

                                            memory/1972-32-0x0000000000B90000-0x0000000000BEE000-memory.dmp

                                            memory/3776-28-0x0000000000160000-0x0000000000180000-memory.dmp

                                            memory/3776-20-0x0000000000160000-0x0000000000180000-memory.dmp

                                            memory/3796-74-0x00000000001B0000-0x00000000001D0000-memory.dmp

                                            memory/3796-80-0x00000000001B0000-0x00000000001D0000-memory.dmp

                                            memory/4588-45-0x0000000006930000-0x000000000693A000-memory.dmp