Analysis

  • max time kernel
    3s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    04-01-2025 17:55

General

  • Target

    b8898efaa954fc0c03b9c39ddef10afed001d5a2807dfa033d938700035d1c8eN.exe

  • Size

    2.0MB

  • MD5

    e38088f4b0a31ef0137687f74aae8d10

  • SHA1

    aaa60d48c7cdf0ba35d913b54a19193b978f732e

  • SHA256

    b8898efaa954fc0c03b9c39ddef10afed001d5a2807dfa033d938700035d1c8e

  • SHA512

    00129f13004e63de02bd8f25346bd2abcf47aa5a6afa09cd9d1d7b3e81b6ecd2063c501dd7156484ae7e106e8aaccaed40b1a6376bfa6d5ba3d451b024279b9d

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKY7:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9YF

Malware Config

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

Extracted

Family

azorult

C2

http://0x21.in:8000/_az/

Signatures

  • Azorult

    An information stealer that was first discovered in 2016, targeting browsing history and passwords.

  • Azorult family
  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar family
  • Quasar payload 5 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 9 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.

  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • AutoIT Executable 1 IoCs

    AutoIT scripts compiled to PE executables.

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 4 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b8898efaa954fc0c03b9c39ddef10afed001d5a2807dfa033d938700035d1c8eN.exe
    "C:\Users\Admin\AppData\Local\Temp\b8898efaa954fc0c03b9c39ddef10afed001d5a2807dfa033d938700035d1c8eN.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1952
    • C:\Users\Admin\AppData\Local\Temp\vnc.exe
      "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:1416
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
        • Maps connected drives based on registry
        PID:1164
    • C:\Users\Admin\AppData\Local\Temp\windef.exe
      "C:\Users\Admin\AppData\Local\Temp\windef.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2900
      • 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:1020
      • 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
        PID:2036
        • 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:1972
    • C:\Users\Admin\AppData\Local\Temp\b8898efaa954fc0c03b9c39ddef10afed001d5a2807dfa033d938700035d1c8eN.exe
      "C:\Users\Admin\AppData\Local\Temp\b8898efaa954fc0c03b9c39ddef10afed001d5a2807dfa033d938700035d1c8eN.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2752
    • 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:2840
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {962C146A-6E8B-4609-BCB6-7CCA5701ACCC} S-1-5-21-3290804112-2823094203-3137964600-1000:VORHPBAB\Admin:Interactive:[1]
    1⤵
      PID:1804
      • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
        C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
        2⤵
          PID:1640
          • C:\Users\Admin\AppData\Local\Temp\vnc.exe
            "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
            3⤵
              PID:2780
              • C:\Windows\system32\svchost.exe
                C:\Windows\system32\svchost.exe -k
                4⤵
                  PID:2700
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -u -p 2780 -s 160
                  4⤵
                  • Program crash
                  PID:856
              • C:\Users\Admin\AppData\Local\Temp\windef.exe
                "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                3⤵
                  PID:2112
                • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                  "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
                  3⤵
                    PID:1576
                  • 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
                    3⤵
                    • Scheduled Task/Job: Scheduled Task
                    PID:1520

              Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\R7YQ3ZIB.txt

                Filesize

                213B

                MD5

                d673ba1b77fb13d1b064f77be6a6bad5

                SHA1

                e9467d64c491232960c893ad558558d0f0e8b522

                SHA256

                9753890dec0ab30fa970b7b8b17a3dbe69ce44a01d08bb3eecec391cb690a935

                SHA512

                e6e52b18d4b74d33f48d5f52c9494cb1ba43dd916b3a18b158f1c375ae7c3778a1207d565917ad28306787b2265a3509bcf496a6c3c5759646000b66bd89fa1c

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

                Filesize

                2.0MB

                MD5

                78088da187ce35e46c68d4cee2ee85d0

                SHA1

                26f586e549d4c3ce9d7dd49aaa67e310c29328b4

                SHA256

                fc62d536caedfdad671d1563426be3d95417b0b84ecacd1846375fbc902a5363

                SHA512

                52c879d62264c48b249227413417a4536d1988244f9cbe37cf60b26f854fe22fc626e75d07c9a7c0e0c808fb7daa092d2e45e26543417bc8b2cbf8e0cdc10217

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

                Filesize

                405KB

                MD5

                b8ba87ee4c3fc085a2fed0d839aadce1

                SHA1

                b3a2e3256406330e8b1779199bb2b9865122d766

                SHA256

                4e8a99cd33c9e5c747a3ce8f1a3e17824846f4a8f7cb0631aebd0815db2ce3a4

                SHA512

                7a775a12cd5bcd182d64be0d31f800b456ca6d1b531189cea9c72e1940871cfe92ccd005938f67bfa4784ae44c54b3a7ea29a5bb59766e98c78bf53b680f2ab2

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

                Filesize

                349KB

                MD5

                b4a202e03d4135484d0e730173abcc72

                SHA1

                01b30014545ea526c15a60931d676f9392ea0c70

                SHA256

                7050608d53f80269df951d00883ed79815c060ce7678a76b5c3f6a2a985beea9

                SHA512

                632a035a3b722ea29b02aad1f0da3df5bdc38abc7e6617223790955c6c0830f1070b528680416d5c63ea5e846074cdad87f06c21c35a77b1ccc4edc089d8b1fb

              • memory/1164-47-0x0000000000020000-0x0000000000021000-memory.dmp

                Filesize

                4KB

              • memory/1164-50-0x0000000000390000-0x000000000042C000-memory.dmp

                Filesize

                624KB

              • memory/1164-49-0x000007FFFFFDF000-0x000007FFFFFE0000-memory.dmp

                Filesize

                4KB

              • memory/1164-54-0x0000000000390000-0x000000000042C000-memory.dmp

                Filesize

                624KB

              • memory/1576-102-0x00000000000C0000-0x00000000000E0000-memory.dmp

                Filesize

                128KB

              • memory/1576-105-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

                Filesize

                4KB

              • memory/1576-109-0x00000000000C0000-0x00000000000E0000-memory.dmp

                Filesize

                128KB

              • memory/1952-30-0x0000000000710000-0x0000000000711000-memory.dmp

                Filesize

                4KB

              • memory/2036-62-0x0000000000980000-0x00000000009DE000-memory.dmp

                Filesize

                376KB

              • memory/2112-99-0x0000000001390000-0x00000000013EE000-memory.dmp

                Filesize

                376KB

              • memory/2752-33-0x0000000000080000-0x00000000000A0000-memory.dmp

                Filesize

                128KB

              • memory/2752-31-0x0000000000080000-0x00000000000A0000-memory.dmp

                Filesize

                128KB

              • memory/2752-39-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

                Filesize

                4KB

              • memory/2752-43-0x0000000000080000-0x00000000000A0000-memory.dmp

                Filesize

                128KB

              • memory/2900-46-0x00000000001A0000-0x00000000001FE000-memory.dmp

                Filesize

                376KB