Analysis

  • max time kernel
    5s
  • max time network
    113s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16/01/2025, 08:25

General

  • Target
    d25077b6b3c6d3cd8ca38dd4eb410a8f56fa2f889459c96fe4746d9c4dc9a7cfN.exe
  • Size 2.0MB
  • Sample250116-kbraassmbk
  • SHA256 d25077b6b3c6d3cd8ca38dd4eb410a8f56fa2f889459c96fe4746d9c4dc9a7cf
  • 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.

  • Azorult family
  • Quasar RAT 3 IoCs

    Quasar is an open source Remote Access Tool.

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

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

  • Executes dropped EXE 5 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 10 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 32 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d25077b6b3c6d3cd8ca38dd4eb410a8f56fa2f889459c96fe4746d9c4dc9a7cfN.exe
    "C:\Users\Admin\AppData\Local\Temp\d25077b6b3c6d3cd8ca38dd4eb410a8f56fa2f889459c96fe4746d9c4dc9a7cfN.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:4028
    • 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:1836
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
          PID:2324
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1836 -s 552
          3⤵
          • Program crash
          PID:736
      • 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:548
        • 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:2060
        • 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:2212
          • 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:5032
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\oCyPRzyFHu3W.bat" "
            4⤵
              PID:1072
              • C:\Windows\SysWOW64\chcp.com
                chcp 65001
                5⤵
                  PID:1600
                • C:\Windows\SysWOW64\PING.EXE
                  ping -n 10 localhost
                  5⤵
                  • System Network Configuration Discovery: Internet Connection Discovery
                  • Runs ping.exe
                  PID:1872
                • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                  "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                  5⤵
                    PID:3404
                    • 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:1020
                    • C:\Windows\SysWOW64\cmd.exe
                      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\2lZnNMFUsBmQ.bat" "
                      6⤵
                        PID:1132
                        • C:\Windows\SysWOW64\chcp.com
                          chcp 65001
                          7⤵
                            PID:4900
                          • C:\Windows\SysWOW64\PING.EXE
                            ping -n 10 localhost
                            7⤵
                            • System Network Configuration Discovery: Internet Connection Discovery
                            • Runs ping.exe
                            PID:4016
                          • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                            "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                            7⤵
                              PID:4452
                              • 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:4108
                          • C:\Windows\SysWOW64\WerFault.exe
                            C:\Windows\SysWOW64\WerFault.exe -u -p 3404 -s 2220
                            6⤵
                            • Program crash
                            PID:4856
                      • C:\Windows\SysWOW64\WerFault.exe
                        C:\Windows\SysWOW64\WerFault.exe -u -p 2212 -s 2008
                        4⤵
                        • Program crash
                        PID:4920
                  • C:\Users\Admin\AppData\Local\Temp\d25077b6b3c6d3cd8ca38dd4eb410a8f56fa2f889459c96fe4746d9c4dc9a7cfN.exe
                    "C:\Users\Admin\AppData\Local\Temp\d25077b6b3c6d3cd8ca38dd4eb410a8f56fa2f889459c96fe4746d9c4dc9a7cfN.exe"
                    2⤵
                    • System Location Discovery: System Language Discovery
                    PID:5104
                  • 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:2140
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1836 -ip 1836
                  1⤵
                    PID:4448
                  • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                    C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                    1⤵
                    • Checks computer location settings
                    • Executes dropped EXE
                    • System Location Discovery: System Language Discovery
                    • Suspicious behavior: EnumeratesProcesses
                    • Suspicious use of WriteProcessMemory
                    PID:3352
                    • 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:3692
                      • C:\Windows\system32\svchost.exe
                        C:\Windows\system32\svchost.exe -k
                        3⤵
                          PID:920
                        • C:\Windows\SysWOW64\WerFault.exe
                          C:\Windows\SysWOW64\WerFault.exe -u -p 3692 -s 520
                          3⤵
                          • Program crash
                          PID:1156
                      • C:\Users\Admin\AppData\Local\Temp\windef.exe
                        "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                        2⤵
                          PID:4108
                        • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                          "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
                          2⤵
                            PID:2964
                          • 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:2600
                        • C:\Windows\SysWOW64\WerFault.exe
                          C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 3692 -ip 3692
                          1⤵
                            PID:4300
                          • C:\Windows\SysWOW64\WerFault.exe
                            C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 2212 -ip 2212
                            1⤵
                              PID:3452
                            • C:\Windows\SysWOW64\WerFault.exe
                              C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 3404 -ip 3404
                              1⤵
                                PID:4544

                              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

                                    2lZnNMFUsBmQ.bat

                                    • Path C:\Users\Admin\AppData\Local\Temp\2lZnNMFUsBmQ.bat
                                    • Size 208B
                                    • SHA256 03ef91b5867416300beb158446c335b99f69dcf115d10811004d271b3bac6151
                                    • MD5 SHA1 SHA512

                                    oCyPRzyFHu3W.bat

                                    • Path C:\Users\Admin\AppData\Local\Temp\oCyPRzyFHu3W.bat
                                    • Size 208B
                                    • SHA256 ebe77834afbe74ac8d0e02f0b50c7139220b5f157bcf794e50aed6205000ff89
                                    • 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

                                    01-16-2025

                                    • Path C:\Users\Admin\AppData\Roaming\Logs\01-16-2025
                                    • Size 224B
                                    • SHA256 715060af7432ce6524086de0d1d67a5c4c0de0269ca9449ac911ac61a1b22795
                                    • MD5 SHA1 SHA512

                                    01-16-2025

                                    • Path C:\Users\Admin\AppData\Roaming\Logs\01-16-2025
                                    • Size 224B
                                    • SHA256 6b8ab13fe108a913d5faeaa2fa59f475b5f8b0e0b49e35d2e07c7054c5057b1f
                                    • MD5 SHA1 SHA512

                                    SystemPropertiesPerformance.exe

                                    • Path C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                                    • Size 2.0MB
                                    • SHA256 3998674fe09c6bc0cfe8a4bfb5c0f0e4e9140b44455277c8fc981276cd02af97
                                    • MD5 SHA1 SHA512 SSDEEP

                                    memory/548-36-0x0000000005F30000-0x0000000005F42000-memory.dmp

                                    memory/548-35-0x0000000005320000-0x0000000005386000-memory.dmp

                                    memory/548-34-0x0000000005280000-0x0000000005312000-memory.dmp

                                    memory/548-37-0x0000000006470000-0x00000000064AC000-memory.dmp

                                    memory/548-33-0x0000000005700000-0x0000000005CA4000-memory.dmp

                                    memory/548-32-0x0000000000900000-0x000000000095E000-memory.dmp

                                    memory/548-29-0x00000000736EE000-0x00000000736EF000-memory.dmp

                                    memory/2212-48-0x0000000006860000-0x000000000686A000-memory.dmp

                                    memory/2964-67-0x00000000003D0000-0x00000000003F0000-memory.dmp

                                    memory/2964-73-0x00000000003D0000-0x00000000003F0000-memory.dmp

                                    memory/4028-18-0x0000000003AA0000-0x0000000003AA1000-memory.dmp

                                    memory/5104-28-0x0000000000400000-0x0000000000420000-memory.dmp

                                    memory/5104-20-0x0000000000400000-0x0000000000420000-memory.dmp