Analysis

  • max time kernel
    1s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    16-10-2024 08:36

General

  • Target

    a71d11b5a3342630144b38c1e6144f3fa1db2fab560a1a15e63984e93f476d9eN.exe

  • Size

    2.0MB

  • MD5

    386be81df66358401e1f15650f20d290

  • SHA1

    3705ee0aab1ee903e17a2c30e67bd7bcc31ccabe

  • SHA256

    a71d11b5a3342630144b38c1e6144f3fa1db2fab560a1a15e63984e93f476d9e

  • SHA512

    44c3895365db1d8666008c8dca75007e300515a02b4dc8d5115c6e6b145515edd72101155b6f63a767c43404a46c0d714f622faf3ea9b53a3391181085456dfc

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKYP:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9Yt

Malware Config

Extracted

Family

azorult

C2

http://0x21.in:8000/_az/

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

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 6 IoCs
  • Executes dropped EXE 6 IoCs
  • Loads dropped DLL 33 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 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 3 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 6 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a71d11b5a3342630144b38c1e6144f3fa1db2fab560a1a15e63984e93f476d9eN.exe
    "C:\Users\Admin\AppData\Local\Temp\a71d11b5a3342630144b38c1e6144f3fa1db2fab560a1a15e63984e93f476d9eN.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:2668
    • 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:2808
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
          PID:2800
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2808 -s 160
          3⤵
          • Loads dropped DLL
          • Program crash
          PID:2868
      • 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:2676
        • 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:2860
        • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
          "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
          3⤵
            PID:2796
            • 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:1904
        • C:\Users\Admin\AppData\Local\Temp\a71d11b5a3342630144b38c1e6144f3fa1db2fab560a1a15e63984e93f476d9eN.exe
          "C:\Users\Admin\AppData\Local\Temp\a71d11b5a3342630144b38c1e6144f3fa1db2fab560a1a15e63984e93f476d9eN.exe"
          2⤵
          • System Location Discovery: System Language Discovery
          PID:2044
        • 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:2624

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      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/2044-39-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

        Filesize

        4KB

      • memory/2044-43-0x0000000000080000-0x00000000000A0000-memory.dmp

        Filesize

        128KB

      • memory/2044-33-0x0000000000080000-0x00000000000A0000-memory.dmp

        Filesize

        128KB

      • memory/2044-31-0x0000000000080000-0x00000000000A0000-memory.dmp

        Filesize

        128KB

      • memory/2044-31-0x0000000000080000-0x00000000000A0000-memory.dmp

        Filesize

        128KB

      • memory/2044-33-0x0000000000080000-0x00000000000A0000-memory.dmp

        Filesize

        128KB

      • memory/2044-39-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

        Filesize

        4KB

      • memory/2044-43-0x0000000000080000-0x00000000000A0000-memory.dmp

        Filesize

        128KB

      • memory/2044-43-0x0000000000080000-0x00000000000A0000-memory.dmp

        Filesize

        128KB

      • memory/2044-33-0x0000000000080000-0x00000000000A0000-memory.dmp

        Filesize

        128KB

      • memory/2044-31-0x0000000000080000-0x00000000000A0000-memory.dmp

        Filesize

        128KB

      • memory/2044-39-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

        Filesize

        4KB

      • memory/2668-30-0x0000000000FA0000-0x0000000000FA1000-memory.dmp

        Filesize

        4KB

      • memory/2668-30-0x0000000000FA0000-0x0000000000FA1000-memory.dmp

        Filesize

        4KB

      • memory/2668-30-0x0000000000FA0000-0x0000000000FA1000-memory.dmp

        Filesize

        4KB

      • memory/2676-46-0x0000000000E50000-0x0000000000EAE000-memory.dmp

        Filesize

        376KB

      • memory/2676-46-0x0000000000E50000-0x0000000000EAE000-memory.dmp

        Filesize

        376KB

      • memory/2676-46-0x0000000000E50000-0x0000000000EAE000-memory.dmp

        Filesize

        376KB

      • memory/2796-60-0x00000000013B0000-0x000000000140E000-memory.dmp

        Filesize

        376KB

      • memory/2796-60-0x00000000013B0000-0x000000000140E000-memory.dmp

        Filesize

        376KB

      • memory/2796-60-0x00000000013B0000-0x000000000140E000-memory.dmp

        Filesize

        376KB