Analysis

  • max time kernel
    5s
  • max time network
    84s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-08-2024 02:43

General

  • Target

    d51b90da4fbc73a552fc6535765fab90N.exe

  • Size

    2.0MB

  • MD5

    d51b90da4fbc73a552fc6535765fab90

  • SHA1

    23b698e05b97e9c57a280094812254ae8cdb203d

  • SHA256

    ee69e572e5b494b52bbd7d9f058fe0e6920821ed1cdd96a60221d1ff3a5cd3f3

  • SHA512

    661de2af0804a5216f89349155006625e90e96b504b318107e942f626776476b98d7b48b9b1b168dcc4cf8e53b87ef110bc91b555e0dadbe89c0bce3329a6478

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKYo:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9YG

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 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 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\d51b90da4fbc73a552fc6535765fab90N.exe
    "C:\Users\Admin\AppData\Local\Temp\d51b90da4fbc73a552fc6535765fab90N.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:3052
    • 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:4960
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
          PID:1292
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4960 -s 548
          3⤵
          • Program crash
          PID:2396
      • 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:3080
        • 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:5088
        • 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:4792
          • 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:1348
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\lxsGmWXMgiw7.bat" "
            4⤵
              PID:3672
              • C:\Windows\SysWOW64\chcp.com
                chcp 65001
                5⤵
                  PID:3064
                • C:\Windows\SysWOW64\PING.EXE
                  ping -n 10 localhost
                  5⤵
                  • System Network Configuration Discovery: Internet Connection Discovery
                  • Runs ping.exe
                  PID:2344
                • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                  "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                  5⤵
                    PID:2736
                    • 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:544
                    • C:\Windows\SysWOW64\cmd.exe
                      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\gNBZ8JaPPwQ1.bat" "
                      6⤵
                        PID:4304
                        • C:\Windows\SysWOW64\chcp.com
                          chcp 65001
                          7⤵
                            PID:4640
                          • C:\Windows\SysWOW64\PING.EXE
                            ping -n 10 localhost
                            7⤵
                            • System Network Configuration Discovery: Internet Connection Discovery
                            • Runs ping.exe
                            PID:3020
                        • C:\Windows\SysWOW64\WerFault.exe
                          C:\Windows\SysWOW64\WerFault.exe -u -p 2736 -s 2000
                          6⤵
                          • Program crash
                          PID:2732
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -u -p 4792 -s 2264
                      4⤵
                      • Program crash
                      PID:3108
                • C:\Users\Admin\AppData\Local\Temp\d51b90da4fbc73a552fc6535765fab90N.exe
                  "C:\Users\Admin\AppData\Local\Temp\d51b90da4fbc73a552fc6535765fab90N.exe"
                  2⤵
                  • System Location Discovery: System Language Discovery
                  PID:3100
                • 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:4428
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4960 -ip 4960
                1⤵
                  PID:1352
                • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                  C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                  1⤵
                    PID:4180
                    • C:\Users\Admin\AppData\Local\Temp\vnc.exe
                      "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
                      2⤵
                        PID:2088
                        • C:\Windows\system32\svchost.exe
                          C:\Windows\system32\svchost.exe -k
                          3⤵
                            PID:4704
                          • C:\Windows\SysWOW64\WerFault.exe
                            C:\Windows\SysWOW64\WerFault.exe -u -p 2088 -s 528
                            3⤵
                            • Program crash
                            PID:4588
                        • C:\Users\Admin\AppData\Local\Temp\windef.exe
                          "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                          2⤵
                            PID:3616
                          • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                            "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
                            2⤵
                              PID:4384
                            • 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:4448
                          • C:\Windows\SysWOW64\WerFault.exe
                            C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 2088 -ip 2088
                            1⤵
                              PID:2684
                            • C:\Windows\SysWOW64\WerFault.exe
                              C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4792 -ip 4792
                              1⤵
                                PID:4812
                              • C:\Windows\SysWOW64\WerFault.exe
                                C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 2736 -ip 2736
                                1⤵
                                  PID:4144
                                • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
                                  "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
                                  1⤵
                                    PID:4288
                                  • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
                                    "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
                                    1⤵
                                      PID:3548

                                    Network

                                    MITRE ATT&CK Enterprise v15

                                    Replay Monitor

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                                    Downloads

                                    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\windef.exe.log

                                      Filesize

                                      1KB

                                      MD5

                                      10eab9c2684febb5327b6976f2047587

                                      SHA1

                                      a12ed54146a7f5c4c580416aecb899549712449e

                                      SHA256

                                      f49dbd55029bfbc15134f7c6a4f967d6c39142c63f2e8f1f8c78fab108a2c928

                                      SHA512

                                      7e5fd90fffae723bd0c662a90e0730b507805f072771ee673d1d8c262dbf60c8a03ba5fe088f699a97c2e886380de158b2ccd59ee62e3d012dd6dd14ea9d0e50

                                    • C:\Users\Admin\AppData\Local\Temp\gNBZ8JaPPwQ1.bat

                                      Filesize

                                      208B

                                      MD5

                                      96e001dc7652ddc7642e84b38cb4d787

                                      SHA1

                                      a808f474a2c7c9f03fa0ae044cca3c31a1996ae0

                                      SHA256

                                      0663fb2ffd15f1a993cd8ca7278ff9efdad802367a403a11deeb9625c03df7b8

                                      SHA512

                                      5ef5c0c4b2bc01150bfb75ef99cb4484e019841a3e972ad4fab03f8b30b9a5977de10d665a73868ea79ec8c631d0d0979fa46bd3a6b927674a6488af3404866e

                                    • C:\Users\Admin\AppData\Local\Temp\lxsGmWXMgiw7.bat

                                      Filesize

                                      208B

                                      MD5

                                      bb5b54af277ae3159797021ac5be5fda

                                      SHA1

                                      2f5569bb8a60d38395879bc6c7ff5275abb95493

                                      SHA256

                                      e2aa5c4a6951fb32db4f6fd2e8b762173e1d8820b523e2c38e8dbef0fd8a01d7

                                      SHA512

                                      076e102fb5ed2d79f56dd90b1a816f7a1393b75cff77a067432624c743edea9d7061da2a25b210f6e3c3b6fc04f0303461887b009da439ed7178aa670b2455ff

                                    • C:\Users\Admin\AppData\Local\Temp\vnc.exe

                                      Filesize

                                      405KB

                                      MD5

                                      b8ba87ee4c3fc085a2fed0d839aadce1

                                      SHA1

                                      b3a2e3256406330e8b1779199bb2b9865122d766

                                      SHA256

                                      4e8a99cd33c9e5c747a3ce8f1a3e17824846f4a8f7cb0631aebd0815db2ce3a4

                                      SHA512

                                      7a775a12cd5bcd182d64be0d31f800b456ca6d1b531189cea9c72e1940871cfe92ccd005938f67bfa4784ae44c54b3a7ea29a5bb59766e98c78bf53b680f2ab2

                                    • C:\Users\Admin\AppData\Local\Temp\windef.exe

                                      Filesize

                                      349KB

                                      MD5

                                      b4a202e03d4135484d0e730173abcc72

                                      SHA1

                                      01b30014545ea526c15a60931d676f9392ea0c70

                                      SHA256

                                      7050608d53f80269df951d00883ed79815c060ce7678a76b5c3f6a2a985beea9

                                      SHA512

                                      632a035a3b722ea29b02aad1f0da3df5bdc38abc7e6617223790955c6c0830f1070b528680416d5c63ea5e846074cdad87f06c21c35a77b1ccc4edc089d8b1fb

                                    • C:\Users\Admin\AppData\Roaming\Logs\08-17-2024

                                      Filesize

                                      224B

                                      MD5

                                      2a96be643d0cab25a9fc6281ba8ffe0f

                                      SHA1

                                      e92a93067217d3e908e18951709c84c03b569a7b

                                      SHA256

                                      54b94ed56e9c354d60c4cab8de91c58393c84a95d029541217b70a6626db08dc

                                      SHA512

                                      7c456b1b4b2af5bd3b50593fe0e16cbfd0f9077f23e44e947eb70eb0e2f50729cf8eb9550cea0d8bbba37c41a9b77de87cb9e68196b2d79b992882915cb2180f

                                    • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe

                                      Filesize

                                      2.0MB

                                      MD5

                                      0415546b013a0e6c1732ca68c39da90a

                                      SHA1

                                      dfe9010c122b376cc2f54e51c7f6cd619cb5e431

                                      SHA256

                                      e1a4be88d85d13c1c5626bfd1db17caa7812849fb13bd2b960a34a5590309887

                                      SHA512

                                      9be8f85c8ce318084a9d81be24e8a4197835d8c2c867e9d927cfd753de5dbe350ce944dddc62a1062fe3a9b2dbefe8fe6fa5562f0d352dd54493cfd68bbf695b

                                    • memory/3052-19-0x00000000047A0000-0x00000000047A1000-memory.dmp

                                      Filesize

                                      4KB

                                    • memory/3080-32-0x0000000000B00000-0x0000000000B5E000-memory.dmp

                                      Filesize

                                      376KB

                                    • memory/3080-35-0x0000000005410000-0x0000000005476000-memory.dmp

                                      Filesize

                                      408KB

                                    • memory/3080-36-0x0000000006130000-0x0000000006142000-memory.dmp

                                      Filesize

                                      72KB

                                    • memory/3080-37-0x0000000006670000-0x00000000066AC000-memory.dmp

                                      Filesize

                                      240KB

                                    • memory/3080-34-0x00000000054A0000-0x0000000005532000-memory.dmp

                                      Filesize

                                      584KB

                                    • memory/3080-33-0x0000000005A50000-0x0000000005FF4000-memory.dmp

                                      Filesize

                                      5.6MB

                                    • memory/3080-29-0x0000000072B5E000-0x0000000072B5F000-memory.dmp

                                      Filesize

                                      4KB

                                    • memory/3100-28-0x0000000000400000-0x0000000000420000-memory.dmp

                                      Filesize

                                      128KB

                                    • memory/3100-20-0x0000000000400000-0x0000000000420000-memory.dmp

                                      Filesize

                                      128KB

                                    • memory/4792-45-0x0000000006290000-0x000000000629A000-memory.dmp

                                      Filesize

                                      40KB