Analysis

  • max time kernel
    4s
  • max time network
    113s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/09/2024, 12:19

General

  • Target
    42dceb3d5a022127275e06b244d4c450N.exe
  • Size 2.0MB
  • Sample240903-pg7lpaxeqc
  • SHA256 51a3616542477bb0c9a9cc0529e070782f8dd41c80e2ff2ea5dbdce15a7fe31d
  • 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 2 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 6 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 1 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\42dceb3d5a022127275e06b244d4c450N.exe
    "C:\Users\Admin\AppData\Local\Temp\42dceb3d5a022127275e06b244d4c450N.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:4512
    • 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:2076
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
          PID:2020
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2076 -s 548
          3⤵
          • Program crash
          PID:1152
      • 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:3448
        • 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:4272
        • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
          "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
          3⤵
            PID:4740
            • 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:820
            • C:\Windows\SysWOW64\cmd.exe
              C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\cDZgCIO9GaB2.bat" "
              4⤵
                PID:2108
                • C:\Windows\SysWOW64\chcp.com
                  chcp 65001
                  5⤵
                    PID:2984
                  • C:\Windows\SysWOW64\PING.EXE
                    ping -n 10 localhost
                    5⤵
                    • System Network Configuration Discovery: Internet Connection Discovery
                    • Runs ping.exe
                    PID:1316
                  • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                    "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                    5⤵
                      PID:1728
                      • 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:3204
                      • C:\Windows\SysWOW64\cmd.exe
                        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\L5JyQeMBkRgJ.bat" "
                        6⤵
                          PID:5076
                          • C:\Windows\SysWOW64\chcp.com
                            chcp 65001
                            7⤵
                              PID:4972
                            • C:\Windows\SysWOW64\PING.EXE
                              ping -n 10 localhost
                              7⤵
                              • System Network Configuration Discovery: Internet Connection Discovery
                              • Runs ping.exe
                              PID:4648
                            • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                              "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                              7⤵
                                PID:2756
                                • 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:4372
                            • C:\Windows\SysWOW64\WerFault.exe
                              C:\Windows\SysWOW64\WerFault.exe -u -p 1728 -s 2244
                              6⤵
                              • Program crash
                              PID:1960
                        • C:\Windows\SysWOW64\WerFault.exe
                          C:\Windows\SysWOW64\WerFault.exe -u -p 4740 -s 2248
                          4⤵
                          • Program crash
                          PID:4528
                    • C:\Users\Admin\AppData\Local\Temp\42dceb3d5a022127275e06b244d4c450N.exe
                      "C:\Users\Admin\AppData\Local\Temp\42dceb3d5a022127275e06b244d4c450N.exe"
                      2⤵
                      • System Location Discovery: System Language Discovery
                      PID:1264
                    • 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:880
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2076 -ip 2076
                    1⤵
                      PID:3168
                    • 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=4344,i,3239535018877284530,3457823197501312703,262144 --variations-seed-version --mojo-platform-channel-handle=4416 /prefetch:8
                      1⤵
                        PID:4276
                      • C:\Windows\SysWOW64\WerFault.exe
                        C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4740 -ip 4740
                        1⤵
                          PID:4696
                        • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                          C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                          1⤵
                            PID:3104
                            • C:\Users\Admin\AppData\Local\Temp\vnc.exe
                              "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
                              2⤵
                                PID:2948
                                • C:\Windows\system32\svchost.exe
                                  C:\Windows\system32\svchost.exe -k
                                  3⤵
                                    PID:4156
                                  • C:\Windows\SysWOW64\WerFault.exe
                                    C:\Windows\SysWOW64\WerFault.exe -u -p 2948 -s 520
                                    3⤵
                                    • Program crash
                                    PID:3028
                                • C:\Users\Admin\AppData\Local\Temp\windef.exe
                                  "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                                  2⤵
                                    PID:3548
                                  • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                                    "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
                                    2⤵
                                      PID:4888
                                    • 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:2584
                                  • C:\Windows\SysWOW64\WerFault.exe
                                    C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 2948 -ip 2948
                                    1⤵
                                      PID:2568
                                    • C:\Windows\SysWOW64\WerFault.exe
                                      C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 1728 -ip 1728
                                      1⤵
                                        PID:4692

                                      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

                                            L5JyQeMBkRgJ.bat

                                            • Path C:\Users\Admin\AppData\Local\Temp\L5JyQeMBkRgJ.bat
                                            • Size 208B
                                            • SHA256 dffee60fb32e4fe9dceef341c937be078ea9654de29be0355429a8923feb46de
                                            • MD5 SHA1 SHA512

                                            cDZgCIO9GaB2.bat

                                            • Path C:\Users\Admin\AppData\Local\Temp\cDZgCIO9GaB2.bat
                                            • Size 208B
                                            • SHA256 f391d0df033965a82a532037cb784e564c53f3105b6abf263740a5743dd7245d
                                            • 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

                                            09-03-2024

                                            • Path C:\Users\Admin\AppData\Roaming\Logs\09-03-2024
                                            • Size 224B
                                            • SHA256 8587607dd8ad51433c39121a114a983e1491f8a4cdf18da7e42597a6bb353581
                                            • MD5 SHA1 SHA512

                                            09-03-2024

                                            • Path C:\Users\Admin\AppData\Roaming\Logs\09-03-2024
                                            • Size 224B
                                            • SHA256 fbcc5df045880d589f6d398a76640f1779d3fe8d47bd876473797dadd95a22e6
                                            • MD5 SHA1 SHA512

                                            SystemPropertiesPerformance.exe

                                            • Path C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                                            • Size 2.0MB
                                            • SHA256 c813ea03f760dffd2c07fbdd714508d2ea3daffab70e1bc80e03e7252508c272
                                            • MD5 SHA1 SHA512 SSDEEP

                                            memory/1264-21-0x0000000000400000-0x0000000000420000-memory.dmp

                                            memory/1264-29-0x0000000000400000-0x0000000000420000-memory.dmp

                                            memory/3448-35-0x0000000005250000-0x00000000052B6000-memory.dmp

                                            memory/3448-36-0x0000000005E30000-0x0000000005E42000-memory.dmp

                                            memory/3448-37-0x0000000006370000-0x00000000063AC000-memory.dmp

                                            memory/3448-34-0x00000000051B0000-0x0000000005242000-memory.dmp

                                            memory/3448-33-0x0000000005660000-0x0000000005C04000-memory.dmp

                                            memory/3448-30-0x00000000006C0000-0x000000000071E000-memory.dmp

                                            memory/3448-19-0x0000000072B7E000-0x0000000072B7F000-memory.dmp

                                            memory/4512-20-0x0000000000DD0000-0x0000000000DD1000-memory.dmp

                                            memory/4740-45-0x0000000006760000-0x000000000676A000-memory.dmp

                                            memory/4888-74-0x0000000000FB0000-0x0000000000FD0000-memory.dmp

                                            memory/4888-80-0x0000000000FB0000-0x0000000000FD0000-memory.dmp