Analysis

  • max time kernel
    5s
  • max time network
    132s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/08/2024, 02:13

General

  • Target
    c9bff2976429c2bf5aaebb22ff100e6b11f6e60e2bd085463f1fa42a288c6618.exe
  • Size 2.0MB
  • Sample240830-cng86ascqe
  • SHA256 c9bff2976429c2bf5aaebb22ff100e6b11f6e60e2bd085463f1fa42a288c6618
  • 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 4 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 2 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 5 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\c9bff2976429c2bf5aaebb22ff100e6b11f6e60e2bd085463f1fa42a288c6618.exe
    "C:\Users\Admin\AppData\Local\Temp\c9bff2976429c2bf5aaebb22ff100e6b11f6e60e2bd085463f1fa42a288c6618.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:2444
    • 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:3500
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
          PID:4116
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3500 -s 548
          3⤵
          • Program crash
          PID:1384
      • 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:1500
        • 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:2972
        • 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:1220
          • 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:404
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\sV24omw1Uxc9.bat" "
            4⤵
              PID:3040
              • C:\Windows\SysWOW64\chcp.com
                chcp 65001
                5⤵
                  PID:2552
                • C:\Windows\SysWOW64\PING.EXE
                  ping -n 10 localhost
                  5⤵
                  • System Network Configuration Discovery: Internet Connection Discovery
                  • Runs ping.exe
                  PID:4104
                • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                  "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                  5⤵
                    PID:1384
                    • 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:4348
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -u -p 1220 -s 2276
                  4⤵
                  • Program crash
                  PID:4728
            • C:\Users\Admin\AppData\Local\Temp\c9bff2976429c2bf5aaebb22ff100e6b11f6e60e2bd085463f1fa42a288c6618.exe
              "C:\Users\Admin\AppData\Local\Temp\c9bff2976429c2bf5aaebb22ff100e6b11f6e60e2bd085463f1fa42a288c6618.exe"
              2⤵
              • System Location Discovery: System Language Discovery
              PID:1792
            • 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:60
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3500 -ip 3500
            1⤵
              PID:1672
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4360,i,1602949858158667699,12464335823361976127,262144 --variations-seed-version --mojo-platform-channel-handle=4440 /prefetch:8
              1⤵
                PID:3300
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 1220 -ip 1220
                1⤵
                  PID:1932
                • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                  C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                  1⤵
                    PID:2356
                    • C:\Users\Admin\AppData\Local\Temp\vnc.exe
                      "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
                      2⤵
                        PID:3180
                        • C:\Windows\system32\svchost.exe
                          C:\Windows\system32\svchost.exe -k
                          3⤵
                            PID:2192
                          • C:\Windows\SysWOW64\WerFault.exe
                            C:\Windows\SysWOW64\WerFault.exe -u -p 3180 -s 520
                            3⤵
                            • Program crash
                            PID:1932
                        • C:\Users\Admin\AppData\Local\Temp\windef.exe
                          "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                          2⤵
                            PID:2316
                          • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                            "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
                            2⤵
                              PID:1896
                            • 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:4548
                          • C:\Windows\SysWOW64\WerFault.exe
                            C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3180 -ip 3180
                            1⤵
                              PID:404
                            • 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 --lang=en-US --service-sandbox-type=none --field-trial-handle=3096,i,1602949858158667699,12464335823361976127,262144 --variations-seed-version --mojo-platform-channel-handle=3120 /prefetch:3
                              1⤵
                                PID:2312
                              • 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 --lang=en-US --service-sandbox-type=none --field-trial-handle=3124,i,1602949858158667699,12464335823361976127,262144 --variations-seed-version --mojo-platform-channel-handle=1296 /prefetch:3
                                1⤵
                                  PID:1324

                                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

                                      sV24omw1Uxc9.bat

                                      • Path C:\Users\Admin\AppData\Local\Temp\sV24omw1Uxc9.bat
                                      • Size 208B
                                      • SHA256 4ebba85eaa3986bdaf1974c435ee7858ac4924f4f57a37a804c8d866f83b6b07
                                      • 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

                                      08-30-2024

                                      • Path C:\Users\Admin\AppData\Roaming\Logs\08-30-2024
                                      • Size 224B
                                      • SHA256 899bd462db23d634fadc600bc92b859bc6395007d50ad73d5da33b1e03029b21
                                      • MD5 SHA1 SHA512

                                      SystemPropertiesPerformance.exe

                                      • Path C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                                      • Size 2.0MB
                                      • SHA256 b21a5b813b5f0acc1306532d3bcf11a007d7eaee2e5f4c9497ea0c43b0b64996
                                      • MD5 SHA1 SHA512 SSDEEP

                                      memory/1220-45-0x0000000006570000-0x000000000657A000-memory.dmp

                                      memory/1500-36-0x0000000005300000-0x0000000005312000-memory.dmp

                                      memory/1500-34-0x0000000004CF0000-0x0000000004D82000-memory.dmp

                                      memory/1500-35-0x0000000004DF0000-0x0000000004E56000-memory.dmp

                                      memory/1500-33-0x00000000053A0000-0x0000000005944000-memory.dmp

                                      memory/1500-37-0x0000000005EF0000-0x0000000005F2C000-memory.dmp

                                      memory/1500-30-0x0000000000240000-0x000000000029E000-memory.dmp

                                      memory/1500-19-0x000000007380E000-0x000000007380F000-memory.dmp

                                      memory/1792-21-0x00000000003B0000-0x00000000003D0000-memory.dmp

                                      memory/1792-29-0x00000000003B0000-0x00000000003D0000-memory.dmp

                                      memory/1896-74-0x00000000001B0000-0x00000000001D0000-memory.dmp

                                      memory/1896-80-0x00000000001B0000-0x00000000001D0000-memory.dmp

                                      memory/2356-81-0x00000000008F0000-0x0000000000AFA000-memory.dmp

                                      memory/2444-20-0x0000000001080000-0x0000000001081000-memory.dmp