Analysis

  • max time kernel
    10s
  • max time network
    145s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    28-09-2021 09:08

General

  • Target

    c468c0cee1e4f984dddcd81bfa0108b6f8fa97f6666ece1df8f912c52109feb9.exe

  • Size

    2.0MB

  • MD5

    5920ed3468ccde85c92f59e04d5130d4

  • SHA1

    330083a380514918a1f0af9c4abfabf9aabf46e1

  • SHA256

    c468c0cee1e4f984dddcd81bfa0108b6f8fa97f6666ece1df8f912c52109feb9

  • SHA512

    5b5b97b8ad268d81bcc967dabb99ca3fdd855f443502a634de2ac3405c87eb525f4390dd240536ece3bff9ac8c2fc1a772faf5b16692ca769aa98456e1f30723

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 Payload 10 IoCs
  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Executes dropped EXE 2 IoCs
  • Enumerates connected drives 3 TTPs 24 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.

  • Suspicious use of SetThreadContext 2 IoCs
  • autoit_exe 3 IoCs

    AutoIT scripts compiled to PE executables.

  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Creates scheduled task(s) 1 TTPs 4 IoCs

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

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c468c0cee1e4f984dddcd81bfa0108b6f8fa97f6666ece1df8f912c52109feb9.exe
    "C:\Users\Admin\AppData\Local\Temp\c468c0cee1e4f984dddcd81bfa0108b6f8fa97f6666ece1df8f912c52109feb9.exe"
    1⤵
    • Enumerates connected drives
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:808
    • 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:616
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
          PID:1336
      • C:\Users\Admin\AppData\Local\Temp\windef.exe
        "C:\Users\Admin\AppData\Local\Temp\windef.exe"
        2⤵
        • Executes dropped EXE
        PID:1404
        • 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:3568
        • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
          "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
          3⤵
            PID:2268
            • 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:3496
            • C:\Windows\SysWOW64\cmd.exe
              C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\k4Ce2KiUEZBW.bat" "
              4⤵
                PID:3456
                • C:\Windows\SysWOW64\chcp.com
                  chcp 65001
                  5⤵
                    PID:3752
                  • C:\Windows\SysWOW64\PING.EXE
                    ping -n 10 localhost
                    5⤵
                    • Runs ping.exe
                    PID:1084
                  • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                    "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                    5⤵
                      PID:412
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -u -p 2268 -s 1864
                    4⤵
                    • Program crash
                    PID:1304
              • C:\Users\Admin\AppData\Local\Temp\c468c0cee1e4f984dddcd81bfa0108b6f8fa97f6666ece1df8f912c52109feb9.exe
                "C:\Users\Admin\AppData\Local\Temp\c468c0cee1e4f984dddcd81bfa0108b6f8fa97f6666ece1df8f912c52109feb9.exe"
                2⤵
                  PID:1472
                • 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:2136
              • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                1⤵
                  PID:1600
                  • C:\Users\Admin\AppData\Local\Temp\vnc.exe
                    "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
                    2⤵
                      PID:2480
                      • C:\Windows\system32\svchost.exe
                        C:\Windows\system32\svchost.exe -k
                        3⤵
                          PID:768
                      • C:\Users\Admin\AppData\Local\Temp\windef.exe
                        "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                        2⤵
                          PID:1664
                        • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                          "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
                          2⤵
                            PID:1720
                          • 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:3184

                        Network

                        MITRE ATT&CK Matrix ATT&CK v6

                        Execution

                        Scheduled Task

                        1
                        T1053

                        Persistence

                        Scheduled Task

                        1
                        T1053

                        Privilege Escalation

                        Scheduled Task

                        1
                        T1053

                        Discovery

                        Query Registry

                        1
                        T1012

                        Peripheral Device Discovery

                        1
                        T1120

                        System Information Discovery

                        2
                        T1082

                        Remote System Discovery

                        1
                        T1018

                        Replay Monitor

                        Loading Replay Monitor...

                        Downloads

                        • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\windef.exe.log
                          MD5

                          1efce85e583a7a2f123317a20f889d04

                          SHA1

                          60f71aa73ea2e2a48ed1c17e3c6d440abf39c914

                          SHA256

                          2b5532a94879134a876b11c188ade1a61deaba6a80fe1f3a3a77cc442f1cca0d

                          SHA512

                          45a5cd283e6a6ac34c3d8b1a6d73dc1cf52d8c974cf84624e8e9924eddaf354ccda929bce728b47db2b62175e47bdc3eaca6bc6b84d3565881fa87c50319d24c

                        • C:\Users\Admin\AppData\Local\Temp\k4Ce2KiUEZBW.bat
                          MD5

                          922dc70a1558eee1fd5b0b53b7a6f4ca

                          SHA1

                          832b77faad6c433672c889b4e97e0c5c6a30d87a

                          SHA256

                          427570be12939775947354bbd69ee3573cb475e6a7a5468c7fbd8d4d4ccdbd31

                          SHA512

                          6d6a410589588e095e7a10bc0a51f7cd70c90f9a94403dff09737ac51758d5c55b906e0561373d03418a13697d9dc16751f56827fd801397164aee6712a1acb0

                        • C:\Users\Admin\AppData\Local\Temp\vnc.exe
                          MD5

                          b8ba87ee4c3fc085a2fed0d839aadce1

                          SHA1

                          b3a2e3256406330e8b1779199bb2b9865122d766

                          SHA256

                          4e8a99cd33c9e5c747a3ce8f1a3e17824846f4a8f7cb0631aebd0815db2ce3a4

                          SHA512

                          7a775a12cd5bcd182d64be0d31f800b456ca6d1b531189cea9c72e1940871cfe92ccd005938f67bfa4784ae44c54b3a7ea29a5bb59766e98c78bf53b680f2ab2

                        • C:\Users\Admin\AppData\Local\Temp\vnc.exe
                          MD5

                          b8ba87ee4c3fc085a2fed0d839aadce1

                          SHA1

                          b3a2e3256406330e8b1779199bb2b9865122d766

                          SHA256

                          4e8a99cd33c9e5c747a3ce8f1a3e17824846f4a8f7cb0631aebd0815db2ce3a4

                          SHA512

                          7a775a12cd5bcd182d64be0d31f800b456ca6d1b531189cea9c72e1940871cfe92ccd005938f67bfa4784ae44c54b3a7ea29a5bb59766e98c78bf53b680f2ab2

                        • C:\Users\Admin\AppData\Local\Temp\vnc.exe
                          MD5

                          b8ba87ee4c3fc085a2fed0d839aadce1

                          SHA1

                          b3a2e3256406330e8b1779199bb2b9865122d766

                          SHA256

                          4e8a99cd33c9e5c747a3ce8f1a3e17824846f4a8f7cb0631aebd0815db2ce3a4

                          SHA512

                          7a775a12cd5bcd182d64be0d31f800b456ca6d1b531189cea9c72e1940871cfe92ccd005938f67bfa4784ae44c54b3a7ea29a5bb59766e98c78bf53b680f2ab2

                        • C:\Users\Admin\AppData\Local\Temp\windef.exe
                          MD5

                          b4a202e03d4135484d0e730173abcc72

                          SHA1

                          01b30014545ea526c15a60931d676f9392ea0c70

                          SHA256

                          7050608d53f80269df951d00883ed79815c060ce7678a76b5c3f6a2a985beea9

                          SHA512

                          632a035a3b722ea29b02aad1f0da3df5bdc38abc7e6617223790955c6c0830f1070b528680416d5c63ea5e846074cdad87f06c21c35a77b1ccc4edc089d8b1fb

                        • C:\Users\Admin\AppData\Local\Temp\windef.exe
                          MD5

                          b4a202e03d4135484d0e730173abcc72

                          SHA1

                          01b30014545ea526c15a60931d676f9392ea0c70

                          SHA256

                          7050608d53f80269df951d00883ed79815c060ce7678a76b5c3f6a2a985beea9

                          SHA512

                          632a035a3b722ea29b02aad1f0da3df5bdc38abc7e6617223790955c6c0830f1070b528680416d5c63ea5e846074cdad87f06c21c35a77b1ccc4edc089d8b1fb

                        • C:\Users\Admin\AppData\Local\Temp\windef.exe
                          MD5

                          b4a202e03d4135484d0e730173abcc72

                          SHA1

                          01b30014545ea526c15a60931d676f9392ea0c70

                          SHA256

                          7050608d53f80269df951d00883ed79815c060ce7678a76b5c3f6a2a985beea9

                          SHA512

                          632a035a3b722ea29b02aad1f0da3df5bdc38abc7e6617223790955c6c0830f1070b528680416d5c63ea5e846074cdad87f06c21c35a77b1ccc4edc089d8b1fb

                        • C:\Users\Admin\AppData\Local\Temp\windef.exe
                          MD5

                          b4a202e03d4135484d0e730173abcc72

                          SHA1

                          01b30014545ea526c15a60931d676f9392ea0c70

                          SHA256

                          7050608d53f80269df951d00883ed79815c060ce7678a76b5c3f6a2a985beea9

                          SHA512

                          632a035a3b722ea29b02aad1f0da3df5bdc38abc7e6617223790955c6c0830f1070b528680416d5c63ea5e846074cdad87f06c21c35a77b1ccc4edc089d8b1fb

                        • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                          MD5

                          b4a202e03d4135484d0e730173abcc72

                          SHA1

                          01b30014545ea526c15a60931d676f9392ea0c70

                          SHA256

                          7050608d53f80269df951d00883ed79815c060ce7678a76b5c3f6a2a985beea9

                          SHA512

                          632a035a3b722ea29b02aad1f0da3df5bdc38abc7e6617223790955c6c0830f1070b528680416d5c63ea5e846074cdad87f06c21c35a77b1ccc4edc089d8b1fb

                        • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                          MD5

                          b4a202e03d4135484d0e730173abcc72

                          SHA1

                          01b30014545ea526c15a60931d676f9392ea0c70

                          SHA256

                          7050608d53f80269df951d00883ed79815c060ce7678a76b5c3f6a2a985beea9

                          SHA512

                          632a035a3b722ea29b02aad1f0da3df5bdc38abc7e6617223790955c6c0830f1070b528680416d5c63ea5e846074cdad87f06c21c35a77b1ccc4edc089d8b1fb

                        • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                          MD5

                          b4a202e03d4135484d0e730173abcc72

                          SHA1

                          01b30014545ea526c15a60931d676f9392ea0c70

                          SHA256

                          7050608d53f80269df951d00883ed79815c060ce7678a76b5c3f6a2a985beea9

                          SHA512

                          632a035a3b722ea29b02aad1f0da3df5bdc38abc7e6617223790955c6c0830f1070b528680416d5c63ea5e846074cdad87f06c21c35a77b1ccc4edc089d8b1fb

                        • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                          MD5

                          8e730c9dceb6d63ea3032e5bd4e60368

                          SHA1

                          ef2d5cdf5d1a9f3050f9d1f39ba55edd71083a01

                          SHA256

                          87c3eb89af770962b714bdfddefb1d1b75b71893f506fdaf7ecfb54670a99792

                          SHA512

                          0826e609f702816e07a78e2423dd3ffa75bd2aee442273a9d670498f2cfa2d232e532264eb7d0ee9cc4db4aa8e88f9f2f2475c10384193d3c481dc528c750c61

                        • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                          MD5

                          8e730c9dceb6d63ea3032e5bd4e60368

                          SHA1

                          ef2d5cdf5d1a9f3050f9d1f39ba55edd71083a01

                          SHA256

                          87c3eb89af770962b714bdfddefb1d1b75b71893f506fdaf7ecfb54670a99792

                          SHA512

                          0826e609f702816e07a78e2423dd3ffa75bd2aee442273a9d670498f2cfa2d232e532264eb7d0ee9cc4db4aa8e88f9f2f2475c10384193d3c481dc528c750c61

                        • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                          MD5

                          8e730c9dceb6d63ea3032e5bd4e60368

                          SHA1

                          ef2d5cdf5d1a9f3050f9d1f39ba55edd71083a01

                          SHA256

                          87c3eb89af770962b714bdfddefb1d1b75b71893f506fdaf7ecfb54670a99792

                          SHA512

                          0826e609f702816e07a78e2423dd3ffa75bd2aee442273a9d670498f2cfa2d232e532264eb7d0ee9cc4db4aa8e88f9f2f2475c10384193d3c481dc528c750c61

                        • memory/412-162-0x0000000005360000-0x000000000585E000-memory.dmp
                          Filesize

                          5.0MB

                        • memory/412-156-0x0000000000000000-mapping.dmp
                        • memory/616-114-0x0000000000000000-mapping.dmp
                        • memory/768-168-0x0000000000000000-mapping.dmp
                        • memory/768-178-0x00000000009F0000-0x00000000009F1000-memory.dmp
                          Filesize

                          4KB

                        • memory/768-179-0x0000000000950000-0x00000000009EC000-memory.dmp
                          Filesize

                          624KB

                        • memory/808-126-0x0000000001130000-0x000000000127A000-memory.dmp
                          Filesize

                          1.3MB

                        • memory/1084-155-0x0000000000000000-mapping.dmp
                        • memory/1336-128-0x0000000000010000-0x00000000000AC000-memory.dmp
                          Filesize

                          624KB

                        • memory/1336-127-0x00000000000B0000-0x00000000000B1000-memory.dmp
                          Filesize

                          4KB

                        • memory/1336-119-0x0000000000000000-mapping.dmp
                        • memory/1404-130-0x0000000000DB0000-0x0000000000DB1000-memory.dmp
                          Filesize

                          4KB

                        • memory/1404-137-0x00000000069B0000-0x00000000069B1000-memory.dmp
                          Filesize

                          4KB

                        • memory/1404-134-0x0000000005590000-0x0000000005A8E000-memory.dmp
                          Filesize

                          5.0MB

                        • memory/1404-117-0x0000000000000000-mapping.dmp
                        • memory/1404-135-0x0000000005710000-0x0000000005711000-memory.dmp
                          Filesize

                          4KB

                        • memory/1404-132-0x0000000005A90000-0x0000000005A91000-memory.dmp
                          Filesize

                          4KB

                        • memory/1404-136-0x00000000065C0000-0x00000000065C1000-memory.dmp
                          Filesize

                          4KB

                        • memory/1404-133-0x0000000005670000-0x0000000005671000-memory.dmp
                          Filesize

                          4KB

                        • memory/1472-125-0x000000000041A1F8-mapping.dmp
                        • memory/1472-120-0x0000000000400000-0x0000000000420000-memory.dmp
                          Filesize

                          128KB

                        • memory/1600-186-0x0000000001320000-0x0000000001321000-memory.dmp
                          Filesize

                          4KB

                        • memory/1664-177-0x0000000004B70000-0x0000000004B71000-memory.dmp
                          Filesize

                          4KB

                        • memory/1664-169-0x0000000000000000-mapping.dmp
                        • memory/1720-184-0x000000000041A1F8-mapping.dmp
                        • memory/2136-129-0x0000000000000000-mapping.dmp
                        • memory/2268-139-0x0000000000000000-mapping.dmp
                        • memory/2268-146-0x0000000005470000-0x000000000596E000-memory.dmp
                          Filesize

                          5.0MB

                        • memory/2268-151-0x0000000006A10000-0x0000000006A11000-memory.dmp
                          Filesize

                          4KB

                        • memory/2480-166-0x0000000000000000-mapping.dmp
                        • memory/3184-187-0x0000000000000000-mapping.dmp
                        • memory/3456-152-0x0000000000000000-mapping.dmp
                        • memory/3496-150-0x0000000000000000-mapping.dmp
                        • memory/3568-138-0x0000000000000000-mapping.dmp
                        • memory/3752-154-0x0000000000000000-mapping.dmp