Analysis

  • max time kernel
    5s
  • max time network
    101s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/09/2024, 15:26

General

  • Target
    8593dddd537ff3f23be4ea3b63a2e420N.exe
  • Size 2.0MB
  • Sample240905-svdsbatcpm
  • SHA256 76b78f932d25e29b7630092249a054fd274b52f2401c5c26e4470621b26c9f35
  • 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

    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 1 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 3 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 1 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Runs ping.exe 1 TTPs 1 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\8593dddd537ff3f23be4ea3b63a2e420N.exe
    "C:\Users\Admin\AppData\Local\Temp\8593dddd537ff3f23be4ea3b63a2e420N.exe"
    1⤵
    • 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:3332
    • 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:808
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
          PID:2272
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 808 -s 552
          3⤵
          • Program crash
          PID:2760
      • 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:4820
        • 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:2248
        • 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:2276
          • 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:4868
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\sPsiXcWQfHV5.bat" "
            4⤵
              PID:3560
              • C:\Windows\SysWOW64\chcp.com
                chcp 65001
                5⤵
                  PID:4672
                • C:\Windows\SysWOW64\PING.EXE
                  ping -n 10 localhost
                  5⤵
                  • System Network Configuration Discovery: Internet Connection Discovery
                  • Runs ping.exe
                  PID:1252
                • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                  "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                  5⤵
                    PID:1400
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -u -p 2276 -s 2224
                  4⤵
                  • Program crash
                  PID:2904
            • C:\Users\Admin\AppData\Local\Temp\8593dddd537ff3f23be4ea3b63a2e420N.exe
              "C:\Users\Admin\AppData\Local\Temp\8593dddd537ff3f23be4ea3b63a2e420N.exe"
              2⤵
              • System Location Discovery: System Language Discovery
              PID:2192
            • 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:1348
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 808 -ip 808
            1⤵
              PID:4392
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 2276 -ip 2276
              1⤵
                PID:3892
              • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                1⤵
                  PID:4568
                  • C:\Users\Admin\AppData\Local\Temp\vnc.exe
                    "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
                    2⤵
                      PID:4808
                      • C:\Windows\system32\svchost.exe
                        C:\Windows\system32\svchost.exe -k
                        3⤵
                          PID:3924
                        • C:\Windows\SysWOW64\WerFault.exe
                          C:\Windows\SysWOW64\WerFault.exe -u -p 4808 -s 520
                          3⤵
                          • Program crash
                          PID:3384
                      • C:\Users\Admin\AppData\Local\Temp\windef.exe
                        "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                        2⤵
                          PID:4736
                          • 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⤵
                            • Scheduled Task/Job: Scheduled Task
                            PID:4004
                          • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                            "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                            3⤵
                              PID:2932
                              • 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⤵
                                • Scheduled Task/Job: Scheduled Task
                                PID:884
                          • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                            "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
                            2⤵
                              PID:2760
                            • 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:3932
                          • C:\Windows\SysWOW64\WerFault.exe
                            C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 4808 -ip 4808
                            1⤵
                              PID:2844
                            • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
                              "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
                              1⤵
                                PID:1972
                              • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
                                "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
                                1⤵
                                  PID:3908

                                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

                                      sPsiXcWQfHV5.bat

                                      • Path C:\Users\Admin\AppData\Local\Temp\sPsiXcWQfHV5.bat
                                      • Size 208B
                                      • SHA256 069db83e1b78f94b148ad1972e7a1528026b612688a171fd2aead6818afdd8b4
                                      • 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

                                      09-05-2024

                                      • Path C:\Users\Admin\AppData\Roaming\Logs\09-05-2024
                                      • Size 224B
                                      • SHA256 bf4a5812b39ce4bd629b39b4e0a964fbfee2d1636e62056ae6d24b42440fa083
                                      • MD5 SHA1 SHA512

                                      SystemPropertiesPerformance.exe

                                      • Path C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                                      • Size 2.0MB
                                      • SHA256 03591041c47a60780a195717b849273f7c89e19da8d2ba833cac9f2c7392d31d
                                      • MD5 SHA1 SHA512 SSDEEP

                                      memory/2192-28-0x0000000000400000-0x0000000000420000-memory.dmp

                                      memory/2192-21-0x0000000000400000-0x0000000000420000-memory.dmp

                                      memory/2276-44-0x0000000006440000-0x000000000644A000-memory.dmp

                                      memory/3332-19-0x0000000003680000-0x0000000003681000-memory.dmp

                                      memory/4820-33-0x0000000005690000-0x0000000005722000-memory.dmp

                                      memory/4820-34-0x0000000005730000-0x0000000005796000-memory.dmp

                                      memory/4820-35-0x0000000005CF0000-0x0000000005D02000-memory.dmp

                                      memory/4820-36-0x00000000068F0000-0x000000000692C000-memory.dmp

                                      memory/4820-32-0x0000000005D80000-0x0000000006324000-memory.dmp

                                      memory/4820-31-0x0000000000D70000-0x0000000000DCE000-memory.dmp