Analysis

  • max time kernel
    2s
  • max time network
    68s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    02-04-2024 23:06

General

  • Target

    818d900af1ef03e94a077f06e6531278ee35f2510439922b8f583e7abb7094f7.exe

  • Size

    2.0MB

  • MD5

    ccad408c7ce69d5e4f2d635c46458202

  • SHA1

    0c9e336b44a67d65843311bfe8711cd32b965c8c

  • SHA256

    818d900af1ef03e94a077f06e6531278ee35f2510439922b8f583e7abb7094f7

  • SHA512

    be40f01f9a7d5dfa5967a20d82cb509075be95e4cba0fc69119c7d252a110c4e34e0988a4418243df8afef7642c65d9f4b7f11aaf640941670a2621a00fa8707

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKYO:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9Y0

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 4 IoCs
  • Detects Windows executables referencing non-Windows User-Agents 4 IoCs
  • Detects executables containing common artifacts observed in infostealers 4 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 8 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 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 2 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\818d900af1ef03e94a077f06e6531278ee35f2510439922b8f583e7abb7094f7.exe
    "C:\Users\Admin\AppData\Local\Temp\818d900af1ef03e94a077f06e6531278ee35f2510439922b8f583e7abb7094f7.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2784
    • 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:2156
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
          PID:2516
      • C:\Users\Admin\AppData\Local\Temp\windef.exe
        "C:\Users\Admin\AppData\Local\Temp\windef.exe"
        2⤵
        • Executes dropped EXE
        PID:2592
        • 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:2436
        • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
          "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
          3⤵
            PID:576
            • 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:872
        • C:\Users\Admin\AppData\Local\Temp\818d900af1ef03e94a077f06e6531278ee35f2510439922b8f583e7abb7094f7.exe
          "C:\Users\Admin\AppData\Local\Temp\818d900af1ef03e94a077f06e6531278ee35f2510439922b8f583e7abb7094f7.exe"
          2⤵
            PID:2724
          • 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:2480
        • C:\Windows\system32\taskeng.exe
          taskeng.exe {573E9894-0984-42BA-A536-AEA9D68DC2A8} S-1-5-21-778096762-2241304387-192235952-1000:AYFLYVMK\Admin:Interactive:[1]
          1⤵
            PID:2664
            • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
              C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
              2⤵
                PID:1648

            Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

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

              Filesize

              2.0MB

              MD5

              c7e2caeb2c4fc1b18cf1aa2d94e464f1

              SHA1

              e8c67220445fd0ba7a779d14de4779eb6cd3e687

              SHA256

              4834b5345f13b46317055e61473806581b594a561039f8d1608387dfadce87af

              SHA512

              2b36e61476c4348485dc3f07412faaf5fe9e89e7b65d9cf93ae9175b8fefba40fbc531ca968684eaf94265345c7ea22937e6b5745bfe63bec74b670a9086f619

            • \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/576-63-0x0000000000DE0000-0x0000000000E3E000-memory.dmp

              Filesize

              376KB

            • memory/576-70-0x0000000073CA0000-0x000000007438E000-memory.dmp

              Filesize

              6.9MB

            • memory/576-64-0x0000000073CA0000-0x000000007438E000-memory.dmp

              Filesize

              6.9MB

            • memory/2516-35-0x0000000000020000-0x0000000000021000-memory.dmp

              Filesize

              4KB

            • memory/2516-38-0x000007FFFFFD7000-0x000007FFFFFD8000-memory.dmp

              Filesize

              4KB

            • memory/2516-43-0x0000000000020000-0x0000000000021000-memory.dmp

              Filesize

              4KB

            • memory/2516-41-0x0000000000420000-0x00000000004BC000-memory.dmp

              Filesize

              624KB

            • memory/2516-67-0x0000000000420000-0x00000000004BC000-memory.dmp

              Filesize

              624KB

            • memory/2592-65-0x0000000073CA0000-0x000000007438E000-memory.dmp

              Filesize

              6.9MB

            • memory/2592-55-0x0000000004810000-0x0000000004850000-memory.dmp

              Filesize

              256KB

            • memory/2592-54-0x0000000073CA0000-0x000000007438E000-memory.dmp

              Filesize

              6.9MB

            • memory/2592-53-0x0000000000FD0000-0x000000000102E000-memory.dmp

              Filesize

              376KB

            • memory/2724-52-0x0000000000080000-0x00000000000A0000-memory.dmp

              Filesize

              128KB

            • memory/2724-40-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

              Filesize

              4KB

            • memory/2724-30-0x0000000000080000-0x00000000000A0000-memory.dmp

              Filesize

              128KB

            • memory/2724-29-0x0000000000080000-0x00000000000A0000-memory.dmp

              Filesize

              128KB

            • memory/2784-31-0x0000000000A40000-0x0000000000A41000-memory.dmp

              Filesize

              4KB