Analysis

  • max time kernel
    5s
  • max time network
    91s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-10-2023 18:03

General

  • Target

    NEAS.842d3ce72bde73fbfaae364ad7d05110.exe

  • Size

    2.0MB

  • MD5

    842d3ce72bde73fbfaae364ad7d05110

  • SHA1

    4421b42c353827a3cb6df4289bf1b1306ae99974

  • SHA256

    e108f1c69d5ad4290ff18370948f4bfb3a347995b93c003ef5d64ba307cc0e82

  • SHA512

    e26c17d5254f9c1ff485e27483816d2c57ec6eedfa4cb92890e4e94c45be828010edddd0934209ba4aa5c0f5b6e013422215f8ade4f794fb6a3648d11567e885

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKYa:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9Y8

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.

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 10 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 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 2 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).

  • Creates scheduled task(s) 1 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\NEAS.842d3ce72bde73fbfaae364ad7d05110.exe
    "C:\Users\Admin\AppData\Local\Temp\NEAS.842d3ce72bde73fbfaae364ad7d05110.exe"
    1⤵
    • Checks computer location settings
    • Enumerates connected drives
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:920
    • C:\Users\Admin\AppData\Local\Temp\vnc.exe
      "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:4532
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
        • Maps connected drives based on registry
        PID:808
    • C:\Users\Admin\AppData\Local\Temp\windef.exe
      "C:\Users\Admin\AppData\Local\Temp\windef.exe"
      2⤵
      • Executes dropped EXE
      PID:2780
      • 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⤵
        • Creates scheduled task(s)
        PID:1460
      • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
        "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
        3⤵
          PID:5100
          • 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⤵
            • Creates scheduled task(s)
            PID:3220
      • C:\Users\Admin\AppData\Local\Temp\NEAS.842d3ce72bde73fbfaae364ad7d05110.exe
        "C:\Users\Admin\AppData\Local\Temp\NEAS.842d3ce72bde73fbfaae364ad7d05110.exe"
        2⤵
          PID:2140
        • 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⤵
          • Creates scheduled task(s)
          PID:4356
      • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
        C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
        1⤵
          PID:2116
          • C:\Users\Admin\AppData\Local\Temp\vnc.exe
            "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
            2⤵
              PID:4304
              • C:\Windows\system32\svchost.exe
                C:\Windows\system32\svchost.exe -k
                3⤵
                  PID:1904
              • C:\Users\Admin\AppData\Local\Temp\windef.exe
                "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                2⤵
                  PID:2364

              Network

              MITRE ATT&CK Matrix ATT&CK v13

              Execution

              Scheduled Task/Job

              1
              T1053

              Persistence

              Scheduled Task/Job

              1
              T1053

              Privilege Escalation

              Scheduled Task/Job

              1
              T1053

              Discovery

              Query Registry

              3
              T1012

              System Information Discovery

              4
              T1082

              Peripheral Device Discovery

              2
              T1120

              Replay Monitor

              Loading Replay Monitor...

              Downloads

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

                405KB

                MD5

                b8ba87ee4c3fc085a2fed0d839aadce1

                SHA1

                b3a2e3256406330e8b1779199bb2b9865122d766

                SHA256

                4e8a99cd33c9e5c747a3ce8f1a3e17824846f4a8f7cb0631aebd0815db2ce3a4

                SHA512

                7a775a12cd5bcd182d64be0d31f800b456ca6d1b531189cea9c72e1940871cfe92ccd005938f67bfa4784ae44c54b3a7ea29a5bb59766e98c78bf53b680f2ab2

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

                405KB

                MD5

                b8ba87ee4c3fc085a2fed0d839aadce1

                SHA1

                b3a2e3256406330e8b1779199bb2b9865122d766

                SHA256

                4e8a99cd33c9e5c747a3ce8f1a3e17824846f4a8f7cb0631aebd0815db2ce3a4

                SHA512

                7a775a12cd5bcd182d64be0d31f800b456ca6d1b531189cea9c72e1940871cfe92ccd005938f67bfa4784ae44c54b3a7ea29a5bb59766e98c78bf53b680f2ab2

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

                405KB

                MD5

                b8ba87ee4c3fc085a2fed0d839aadce1

                SHA1

                b3a2e3256406330e8b1779199bb2b9865122d766

                SHA256

                4e8a99cd33c9e5c747a3ce8f1a3e17824846f4a8f7cb0631aebd0815db2ce3a4

                SHA512

                7a775a12cd5bcd182d64be0d31f800b456ca6d1b531189cea9c72e1940871cfe92ccd005938f67bfa4784ae44c54b3a7ea29a5bb59766e98c78bf53b680f2ab2

              • 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\Local\Temp\windef.exe
                Filesize

                349KB

                MD5

                b4a202e03d4135484d0e730173abcc72

                SHA1

                01b30014545ea526c15a60931d676f9392ea0c70

                SHA256

                7050608d53f80269df951d00883ed79815c060ce7678a76b5c3f6a2a985beea9

                SHA512

                632a035a3b722ea29b02aad1f0da3df5bdc38abc7e6617223790955c6c0830f1070b528680416d5c63ea5e846074cdad87f06c21c35a77b1ccc4edc089d8b1fb

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

                349KB

                MD5

                b4a202e03d4135484d0e730173abcc72

                SHA1

                01b30014545ea526c15a60931d676f9392ea0c70

                SHA256

                7050608d53f80269df951d00883ed79815c060ce7678a76b5c3f6a2a985beea9

                SHA512

                632a035a3b722ea29b02aad1f0da3df5bdc38abc7e6617223790955c6c0830f1070b528680416d5c63ea5e846074cdad87f06c21c35a77b1ccc4edc089d8b1fb

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

                349KB

                MD5

                b4a202e03d4135484d0e730173abcc72

                SHA1

                01b30014545ea526c15a60931d676f9392ea0c70

                SHA256

                7050608d53f80269df951d00883ed79815c060ce7678a76b5c3f6a2a985beea9

                SHA512

                632a035a3b722ea29b02aad1f0da3df5bdc38abc7e6617223790955c6c0830f1070b528680416d5c63ea5e846074cdad87f06c21c35a77b1ccc4edc089d8b1fb

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

                349KB

                MD5

                b4a202e03d4135484d0e730173abcc72

                SHA1

                01b30014545ea526c15a60931d676f9392ea0c70

                SHA256

                7050608d53f80269df951d00883ed79815c060ce7678a76b5c3f6a2a985beea9

                SHA512

                632a035a3b722ea29b02aad1f0da3df5bdc38abc7e6617223790955c6c0830f1070b528680416d5c63ea5e846074cdad87f06c21c35a77b1ccc4edc089d8b1fb

              • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                Filesize

                349KB

                MD5

                b4a202e03d4135484d0e730173abcc72

                SHA1

                01b30014545ea526c15a60931d676f9392ea0c70

                SHA256

                7050608d53f80269df951d00883ed79815c060ce7678a76b5c3f6a2a985beea9

                SHA512

                632a035a3b722ea29b02aad1f0da3df5bdc38abc7e6617223790955c6c0830f1070b528680416d5c63ea5e846074cdad87f06c21c35a77b1ccc4edc089d8b1fb

              • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                Filesize

                349KB

                MD5

                b4a202e03d4135484d0e730173abcc72

                SHA1

                01b30014545ea526c15a60931d676f9392ea0c70

                SHA256

                7050608d53f80269df951d00883ed79815c060ce7678a76b5c3f6a2a985beea9

                SHA512

                632a035a3b722ea29b02aad1f0da3df5bdc38abc7e6617223790955c6c0830f1070b528680416d5c63ea5e846074cdad87f06c21c35a77b1ccc4edc089d8b1fb

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

                2.0MB

                MD5

                93a8a04cca2127540863bb50f99b279f

                SHA1

                7fcb970698a73fc8baa48e59679b8c7ace23f8fd

                SHA256

                2d5a6a941df17bd1329225b67e622fa848ef187233feeb3678af7acbbfc43c11

                SHA512

                a884f5f325a0a5f05e2042022ff5ef8e046d18f715c9927ac1f1ab9a8d84adc5b316c1dee09d9934999707936778a55f5412efcebca6f998713c1f35b9489f43

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

                2.0MB

                MD5

                93a8a04cca2127540863bb50f99b279f

                SHA1

                7fcb970698a73fc8baa48e59679b8c7ace23f8fd

                SHA256

                2d5a6a941df17bd1329225b67e622fa848ef187233feeb3678af7acbbfc43c11

                SHA512

                a884f5f325a0a5f05e2042022ff5ef8e046d18f715c9927ac1f1ab9a8d84adc5b316c1dee09d9934999707936778a55f5412efcebca6f998713c1f35b9489f43

              • memory/808-38-0x00000000005A0000-0x000000000063C000-memory.dmp
                Filesize

                624KB

              • memory/808-28-0x00000000005A0000-0x000000000063C000-memory.dmp
                Filesize

                624KB

              • memory/808-32-0x0000000000640000-0x0000000000641000-memory.dmp
                Filesize

                4KB

              • memory/808-58-0x00000000005A0000-0x000000000063C000-memory.dmp
                Filesize

                624KB

              • memory/920-19-0x00000000043D0000-0x00000000043D1000-memory.dmp
                Filesize

                4KB

              • memory/2140-35-0x0000000000400000-0x0000000000420000-memory.dmp
                Filesize

                128KB

              • memory/2140-20-0x0000000000400000-0x0000000000420000-memory.dmp
                Filesize

                128KB

              • memory/2780-42-0x0000000004F70000-0x0000000004F80000-memory.dmp
                Filesize

                64KB

              • memory/2780-45-0x0000000006440000-0x000000000647C000-memory.dmp
                Filesize

                240KB

              • memory/2780-53-0x00000000733B0000-0x0000000073B60000-memory.dmp
                Filesize

                7.7MB

              • memory/2780-44-0x0000000006000000-0x0000000006012000-memory.dmp
                Filesize

                72KB

              • memory/2780-43-0x0000000005400000-0x0000000005466000-memory.dmp
                Filesize

                408KB

              • memory/2780-41-0x0000000005060000-0x00000000050F2000-memory.dmp
                Filesize

                584KB

              • memory/2780-37-0x0000000005610000-0x0000000005BB4000-memory.dmp
                Filesize

                5.6MB

              • memory/2780-29-0x00000000733B0000-0x0000000073B60000-memory.dmp
                Filesize

                7.7MB

              • memory/2780-27-0x00000000006D0000-0x000000000072E000-memory.dmp
                Filesize

                376KB

              • memory/5100-52-0x00000000733B0000-0x0000000073B60000-memory.dmp
                Filesize

                7.7MB

              • memory/5100-54-0x0000000005750000-0x0000000005760000-memory.dmp
                Filesize

                64KB

              • memory/5100-56-0x0000000006EA0000-0x0000000006EAA000-memory.dmp
                Filesize

                40KB