Analysis

  • max time kernel
    8s
  • max time network
    152s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    28-09-2021 09:08

General

  • Target

    efacb905cbe59645ce57ea6ac46d32add5f48278aefd411bf4f53116ca0fb0e0.exe

  • Size

    2.0MB

  • MD5

    b0b78da613422be0de8de2e2a2d0ce68

  • SHA1

    a1aea30e16b3bbf15baf1fbb78499adcc5e11d97

  • SHA256

    efacb905cbe59645ce57ea6ac46d32add5f48278aefd411bf4f53116ca0fb0e0

  • SHA512

    6448d7a633aceae8c20fd077e5d4a83f5a542f4b229f0299440bd1b9d90772c83e5a9ca831fed1cf34e75fe08ade8cd386d651d50d1dfee1e102df496252ea57

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.

  • Maps connected drives based on registry 3 TTPs 2 IoCs

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

  • 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 AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 22 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\efacb905cbe59645ce57ea6ac46d32add5f48278aefd411bf4f53116ca0fb0e0.exe
    "C:\Users\Admin\AppData\Local\Temp\efacb905cbe59645ce57ea6ac46d32add5f48278aefd411bf4f53116ca0fb0e0.exe"
    1⤵
    • Enumerates connected drives
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1764
    • 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:2360
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
        • Maps connected drives based on registry
        PID:2608
    • C:\Users\Admin\AppData\Local\Temp\windef.exe
      "C:\Users\Admin\AppData\Local\Temp\windef.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2800
      • 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:644
      • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
        "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
        3⤵
          PID:3716
          • 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:908
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\xrR07nLI6ewF.bat" "
            4⤵
              PID:1468
              • C:\Windows\SysWOW64\chcp.com
                chcp 65001
                5⤵
                  PID:2624
                • C:\Windows\SysWOW64\PING.EXE
                  ping -n 10 localhost
                  5⤵
                  • Runs ping.exe
                  PID:1960
                • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                  "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                  5⤵
                    PID:652
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -u -p 3716 -s 1896
                  4⤵
                  • Program crash
                  PID:4036
            • C:\Users\Admin\AppData\Local\Temp\efacb905cbe59645ce57ea6ac46d32add5f48278aefd411bf4f53116ca0fb0e0.exe
              "C:\Users\Admin\AppData\Local\Temp\efacb905cbe59645ce57ea6ac46d32add5f48278aefd411bf4f53116ca0fb0e0.exe"
              2⤵
                PID:3496
              • 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:2580
            • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
              C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
              1⤵
                PID:3988
                • C:\Users\Admin\AppData\Local\Temp\vnc.exe
                  "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
                  2⤵
                    PID:1036
                    • C:\Windows\system32\svchost.exe
                      C:\Windows\system32\svchost.exe -k
                      3⤵
                        PID:1888
                    • C:\Users\Admin\AppData\Local\Temp\windef.exe
                      "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                      2⤵
                        PID:360
                      • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                        "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
                        2⤵
                          PID:2372
                        • 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:2624

                      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

                      2
                      T1012

                      Peripheral Device Discovery

                      2
                      T1120

                      System Information Discovery

                      3
                      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\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\Local\Temp\xrR07nLI6ewF.bat
                        MD5

                        c841ce0b31c88dce5d5d35dca938c0ad

                        SHA1

                        3cecfff5b0a1bfb8465fe2562f914718517de9ce

                        SHA256

                        116277661292e6439151844f0f25e0425c1772665a470fa0d7f894401dfeabe9

                        SHA512

                        656b8e85d89708e77f36f009830da4a8ce2c3654f171640e1a645413edd9dffc35ba111c2881e62c28e9f0319de6e26f3398a3b8847079709636f1b2daa7331a

                      • 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

                        49b2f43a866dab33d06d5fc7b777a26c

                        SHA1

                        b7e0b23f7c184fcaba4a32d9737ce56f022a9ade

                        SHA256

                        4b46713e2d520338bfd85befbb670583c85735fcfb264e61407d044cf7a1f34b

                        SHA512

                        40ff4940ffbbf69424166ad5d28f9aafa122240ba254533549055f02e8caccbe118c522fc0b0153683bdb2e61e7a4fe59f509ded0772416dd3a93af7536823d7

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

                        49b2f43a866dab33d06d5fc7b777a26c

                        SHA1

                        b7e0b23f7c184fcaba4a32d9737ce56f022a9ade

                        SHA256

                        4b46713e2d520338bfd85befbb670583c85735fcfb264e61407d044cf7a1f34b

                        SHA512

                        40ff4940ffbbf69424166ad5d28f9aafa122240ba254533549055f02e8caccbe118c522fc0b0153683bdb2e61e7a4fe59f509ded0772416dd3a93af7536823d7

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

                        49b2f43a866dab33d06d5fc7b777a26c

                        SHA1

                        b7e0b23f7c184fcaba4a32d9737ce56f022a9ade

                        SHA256

                        4b46713e2d520338bfd85befbb670583c85735fcfb264e61407d044cf7a1f34b

                        SHA512

                        40ff4940ffbbf69424166ad5d28f9aafa122240ba254533549055f02e8caccbe118c522fc0b0153683bdb2e61e7a4fe59f509ded0772416dd3a93af7536823d7

                      • memory/360-170-0x0000000000000000-mapping.dmp
                      • memory/360-178-0x00000000048F0000-0x00000000048F1000-memory.dmp
                        Filesize

                        4KB

                      • memory/644-139-0x0000000000000000-mapping.dmp
                      • memory/652-163-0x0000000005050000-0x0000000005051000-memory.dmp
                        Filesize

                        4KB

                      • memory/652-157-0x0000000000000000-mapping.dmp
                      • memory/908-151-0x0000000000000000-mapping.dmp
                      • memory/1036-167-0x0000000000000000-mapping.dmp
                      • memory/1468-153-0x0000000000000000-mapping.dmp
                      • memory/1764-128-0x0000000003DE0000-0x0000000003DE1000-memory.dmp
                        Filesize

                        4KB

                      • memory/1888-180-0x0000000000200000-0x000000000029C000-memory.dmp
                        Filesize

                        624KB

                      • memory/1888-169-0x0000000000000000-mapping.dmp
                      • memory/1888-179-0x00000000002A0000-0x00000000002A1000-memory.dmp
                        Filesize

                        4KB

                      • memory/1960-156-0x0000000000000000-mapping.dmp
                      • memory/2360-115-0x0000000000000000-mapping.dmp
                      • memory/2372-182-0x00000000000D0000-0x00000000000F0000-memory.dmp
                        Filesize

                        128KB

                      • memory/2372-186-0x00000000000EA1F8-mapping.dmp
                      • memory/2580-127-0x0000000000000000-mapping.dmp
                      • memory/2608-129-0x0000000000A10000-0x0000000000A11000-memory.dmp
                        Filesize

                        4KB

                      • memory/2608-118-0x0000000000000000-mapping.dmp
                      • memory/2608-130-0x0000000000970000-0x0000000000A0C000-memory.dmp
                        Filesize

                        624KB

                      • memory/2624-155-0x0000000000000000-mapping.dmp
                      • memory/2624-188-0x0000000000000000-mapping.dmp
                      • memory/2800-136-0x0000000005860000-0x0000000005861000-memory.dmp
                        Filesize

                        4KB

                      • memory/2800-137-0x00000000067E0000-0x00000000067E1000-memory.dmp
                        Filesize

                        4KB

                      • memory/2800-133-0x0000000005D60000-0x0000000005D61000-memory.dmp
                        Filesize

                        4KB

                      • memory/2800-134-0x0000000005900000-0x0000000005901000-memory.dmp
                        Filesize

                        4KB

                      • memory/2800-131-0x0000000000FB0000-0x0000000000FB1000-memory.dmp
                        Filesize

                        4KB

                      • memory/2800-138-0x0000000006BB0000-0x0000000006BB1000-memory.dmp
                        Filesize

                        4KB

                      • memory/2800-119-0x0000000000000000-mapping.dmp
                      • memory/2800-135-0x0000000005860000-0x0000000005D5E000-memory.dmp
                        Filesize

                        5.0MB

                      • memory/3496-125-0x000000000041A1F8-mapping.dmp
                      • memory/3496-121-0x0000000000400000-0x0000000000420000-memory.dmp
                        Filesize

                        128KB

                      • memory/3716-152-0x0000000006500000-0x0000000006501000-memory.dmp
                        Filesize

                        4KB

                      • memory/3716-147-0x0000000004FE0000-0x00000000054DE000-memory.dmp
                        Filesize

                        5.0MB

                      • memory/3716-140-0x0000000000000000-mapping.dmp
                      • memory/3988-181-0x0000000001800000-0x000000000194A000-memory.dmp
                        Filesize

                        1.3MB