Analysis

  • max time kernel
    1s
  • max time network
    54s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    17-08-2024 02:58

General

  • Target

    9fa318cb2c70bee831d5b90995440a761475fd009c365a38ccff54b0bbb30c35.exe

  • Size

    2.0MB

  • MD5

    501808bb1c3e0cfb633963fc6b73c1d4

  • SHA1

    b872efdbbd6b18a6f15942204443529c8bcf87e6

  • SHA256

    9fa318cb2c70bee831d5b90995440a761475fd009c365a38ccff54b0bbb30c35

  • SHA512

    76f58b21b8596e8c4db3979728bfb0e97ae9632b52df2687929ba380b9fea777c77f19c906462aed08ac27a220f33117e674be422d8e7826ed586e552c9083b3

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKYt:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9YH

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 3 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 11 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.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Scheduled Task/Job: Scheduled Task 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 27 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9fa318cb2c70bee831d5b90995440a761475fd009c365a38ccff54b0bbb30c35.exe
    "C:\Users\Admin\AppData\Local\Temp\9fa318cb2c70bee831d5b90995440a761475fd009c365a38ccff54b0bbb30c35.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:2384
    • 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 behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:2396
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
          PID:2196
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2396 -s 180
          3⤵
          • Loads dropped DLL
          • Program crash
          PID:2600
      • C:\Users\Admin\AppData\Local\Temp\windef.exe
        "C:\Users\Admin\AppData\Local\Temp\windef.exe"
        2⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:2256
        • 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⤵
          • Scheduled Task/Job: Scheduled Task
          PID:1004
        • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
          "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
          3⤵
            PID:1840
            • 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:2420
        • C:\Users\Admin\AppData\Local\Temp\9fa318cb2c70bee831d5b90995440a761475fd009c365a38ccff54b0bbb30c35.exe
          "C:\Users\Admin\AppData\Local\Temp\9fa318cb2c70bee831d5b90995440a761475fd009c365a38ccff54b0bbb30c35.exe"
          2⤵
          • System Location Discovery: System Language Discovery
          PID:2740
        • 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:2876
      • C:\Windows\system32\taskeng.exe
        taskeng.exe {BA4865F4-DE0D-4712-B412-FFDE773826DE} S-1-5-21-3450744190-3404161390-554719085-1000:PDIZKVQX\Admin:Interactive:[1]
        1⤵
          PID:1356

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • \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/1840-59-0x0000000001240000-0x000000000129E000-memory.dmp

          Filesize

          376KB

        • memory/2256-30-0x000000007473E000-0x000000007473F000-memory.dmp

          Filesize

          4KB

        • memory/2256-31-0x0000000000B10000-0x0000000000B6E000-memory.dmp

          Filesize

          376KB

        • memory/2384-32-0x0000000000700000-0x0000000000701000-memory.dmp

          Filesize

          4KB

        • memory/2740-45-0x0000000000080000-0x00000000000A0000-memory.dmp

          Filesize

          128KB

        • memory/2740-41-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

          Filesize

          4KB

        • memory/2740-35-0x0000000000080000-0x00000000000A0000-memory.dmp

          Filesize

          128KB

        • memory/2740-33-0x0000000000080000-0x00000000000A0000-memory.dmp

          Filesize

          128KB