Analysis

  • max time kernel
    2s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    21-11-2024 01:38

General

  • Target

    b83110e94dfe017a8b56e2d8c62cd1cc8625b3d51f1c00f0b3e2acf2993b686f.exe

  • Size

    2.0MB

  • MD5

    36f81684d6dba8fe44fd17044482ab55

  • SHA1

    7c404cfed92d509d35b5b32ff10d5a6751ec1585

  • SHA256

    b83110e94dfe017a8b56e2d8c62cd1cc8625b3d51f1c00f0b3e2acf2993b686f

  • SHA512

    0e66e47e8e8d3fb383a49f18a0b6da4a430bd8fc97cecb13587c652d3bd8068bb55fb71fe98ea31370099b8d5e0f31ba1788ba2a61777e4c952d100ec7442fc5

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKYV:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9Yz

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 13 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 2 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.

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Runs ping.exe 1 TTPs 1 IoCs
  • 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 use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 35 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b83110e94dfe017a8b56e2d8c62cd1cc8625b3d51f1c00f0b3e2acf2993b686f.exe
    "C:\Users\Admin\AppData\Local\Temp\b83110e94dfe017a8b56e2d8c62cd1cc8625b3d51f1c00f0b3e2acf2993b686f.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:1404
    • 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:1156
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
          PID:1928
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1156 -s 160
          3⤵
          • Loads dropped DLL
          • Program crash
          PID:2732
      • 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:2640
        • 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:756
        • 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
          PID:1520
          • 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:1784
          • C:\Windows\SysWOW64\cmd.exe
            cmd /c ""C:\Users\Admin\AppData\Local\Temp\lsTzWz2AofAa.bat" "
            4⤵
              PID:3040
              • C:\Windows\SysWOW64\chcp.com
                chcp 65001
                5⤵
                  PID:996
                • C:\Windows\SysWOW64\PING.EXE
                  ping -n 10 localhost
                  5⤵
                  • System Network Configuration Discovery: Internet Connection Discovery
                  • Runs ping.exe
                  PID:3036
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 1520 -s 1508
                4⤵
                • Program crash
                PID:3064
          • C:\Users\Admin\AppData\Local\Temp\b83110e94dfe017a8b56e2d8c62cd1cc8625b3d51f1c00f0b3e2acf2993b686f.exe
            "C:\Users\Admin\AppData\Local\Temp\b83110e94dfe017a8b56e2d8c62cd1cc8625b3d51f1c00f0b3e2acf2993b686f.exe"
            2⤵
            • System Location Discovery: System Language Discovery
            PID:2780
          • 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:2996
        • C:\Windows\system32\taskeng.exe
          taskeng.exe {6231AF59-47E8-4B16-B783-77666832B416} S-1-5-21-3290804112-2823094203-3137964600-1000:VORHPBAB\Admin:Interactive:[1]
          1⤵
            PID:2956
            • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
              C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
              2⤵
                PID:2968
                • C:\Users\Admin\AppData\Local\Temp\vnc.exe
                  "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
                  3⤵
                    PID:2072
                    • C:\Windows\system32\svchost.exe
                      C:\Windows\system32\svchost.exe -k
                      4⤵
                        PID:1772
                    • C:\Users\Admin\AppData\Local\Temp\windef.exe
                      "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                      3⤵
                        PID:908
                      • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                        "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
                        3⤵
                          PID:1500
                        • 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:2240

                    Network

                    MITRE ATT&CK Enterprise v15

                    Replay Monitor

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                    Downloads

                    • C:\Users\Admin\AppData\Local\Temp\lsTzWz2AofAa.bat

                      Filesize

                      208B

                      MD5

                      477346df426aedfa2ca74578275b2e86

                      SHA1

                      46245a018c604fc738a19bbb283de1571d5e09b9

                      SHA256

                      3249560dc19d25563a7c77b2e9b21ad7a8a6c16f05d93b7f7d89a99a5affb4b9

                      SHA512

                      7d0dcffacdaf0afc2ad766f36b80457d283e5bfb5e2ab25aab66ec0eaa420571c29f8a784e43335df4c561bb7f51b266362f060b0c5805568ecdfcb588cda591

                    • 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\Microsoft\Windows\Cookies\CUCH6TYQ.txt

                      Filesize

                      213B

                      MD5

                      4d1992a37a65071a5171b7035ff2c29a

                      SHA1

                      b77ca70b27618a92467504d5c05015d2f3512909

                      SHA256

                      f78ef11a5c0ff69531c364b0c79c5deed22140d6c8f0e33df3e92b3330ef0ce8

                      SHA512

                      9ea78c46f042bb2b5057fcf89a686dcb452d5fe74e7364f6c4099258aa46a59340531d055aac637b8d2d6b0f7d406d57368056ec892df4278702883064030af3

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

                      Filesize

                      2.0MB

                      MD5

                      fedc675fdc0d9d273588e9ea4912ba6b

                      SHA1

                      b0357ec1a1f6550655b5812ce20e37be89393abf

                      SHA256

                      e6f90ee30131cada406d64b88fc0f8ff22a11136b3166af53c6b1cb4c5385012

                      SHA512

                      de0335226ea55d90ca24489dc44bb82e9a4638015a61b110e5aa50a05e958b4969c55a5298a9f181b778323b5fcb5e79f8c69fedc1e6806070ad6dfa494bd662

                    • memory/908-94-0x0000000000390000-0x00000000003EE000-memory.dmp

                      Filesize

                      376KB

                    • memory/1404-30-0x0000000000930000-0x0000000000931000-memory.dmp

                      Filesize

                      4KB

                    • memory/1500-100-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

                      Filesize

                      4KB

                    • memory/1520-57-0x0000000000E70000-0x0000000000ECE000-memory.dmp

                      Filesize

                      376KB

                    • memory/1772-108-0x00000000000D0000-0x000000000016C000-memory.dmp

                      Filesize

                      624KB

                    • memory/1772-106-0x000007FFFFFD4000-0x000007FFFFFD5000-memory.dmp

                      Filesize

                      4KB

                    • memory/1772-104-0x0000000000020000-0x0000000000021000-memory.dmp

                      Filesize

                      4KB

                    • memory/1772-112-0x00000000000D0000-0x000000000016C000-memory.dmp

                      Filesize

                      624KB

                    • memory/2640-45-0x0000000000D00000-0x0000000000D5E000-memory.dmp

                      Filesize

                      376KB

                    • memory/2780-31-0x0000000000080000-0x00000000000A0000-memory.dmp

                      Filesize

                      128KB

                    • memory/2780-32-0x0000000000080000-0x00000000000A0000-memory.dmp

                      Filesize

                      128KB

                    • memory/2780-38-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

                      Filesize

                      4KB

                    • memory/2780-42-0x0000000000080000-0x00000000000A0000-memory.dmp

                      Filesize

                      128KB