Analysis

  • max time kernel
    3s
  • max time network
    141s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    24-01-2025 22:25

General

  • Target

    3a4a38ed839a1f73825b8456fc1efa73a65a7af25ba3513472d05cfac5ecef78.exe

  • Size

    2.0MB

  • MD5

    7b88dc02a3b11e27a3e4595c442d30ea

  • SHA1

    2546ae7b96ffc096d2f4cf5093290d0a74c09948

  • SHA256

    3a4a38ed839a1f73825b8456fc1efa73a65a7af25ba3513472d05cfac5ecef78

  • SHA512

    9125ed37e104c25779ec7e402e4d55894a9e2764604f786bbc6c54918775eb48c46b0373a8800117c314ff9eb6c6ee2224f48aa0fd8bf7efaa30f98f8bf3c9b8

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKYj:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9Yd

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 4 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 9 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.

  • Maps connected drives based on registry 3 TTPs 2 IoCs

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

  • 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).

  • 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.

  • 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 AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3a4a38ed839a1f73825b8456fc1efa73a65a7af25ba3513472d05cfac5ecef78.exe
    "C:\Users\Admin\AppData\Local\Temp\3a4a38ed839a1f73825b8456fc1efa73a65a7af25ba3513472d05cfac5ecef78.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:2496
    • C:\Users\Admin\AppData\Local\Temp\vnc.exe
      "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:1076
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
        • Maps connected drives based on registry
        PID:2084
    • 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:2348
      • 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:2396
      • 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:3016
        • 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:2124
    • C:\Users\Admin\AppData\Local\Temp\3a4a38ed839a1f73825b8456fc1efa73a65a7af25ba3513472d05cfac5ecef78.exe
      "C:\Users\Admin\AppData\Local\Temp\3a4a38ed839a1f73825b8456fc1efa73a65a7af25ba3513472d05cfac5ecef78.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2884
    • 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:2864
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {F3F66BCA-93CA-492D-8607-72A5FA05E07E} S-1-5-21-3533259084-2542256011-65585152-1000:XPAJOTIY\Admin:Interactive:[1]
    1⤵
      PID:1964
      • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
        C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
        2⤵
          PID:1672

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        2.0MB

        MD5

        b79b4cd03a756603182dacdc540e73ce

        SHA1

        19621b0ef78c7ac0352d1809d11b84bf68e0a3a8

        SHA256

        89c7d7612127a60e78ec4f5624526b3a477e25622ce951a67c01c34e8e0ce112

        SHA512

        3ccb3ce463d3a0192ffb667a902c9b3a23d627f8885855295312ad4709463f4e99825db98b88cd848b3f1016e2df0fd7d5b73e5929c2d94f91dd538277df79b1

      • \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/2084-51-0x0000000000330000-0x00000000003CC000-memory.dmp

        Filesize

        624KB

      • memory/2084-55-0x0000000000330000-0x00000000003CC000-memory.dmp

        Filesize

        624KB

      • memory/2084-48-0x0000000000020000-0x0000000000021000-memory.dmp

        Filesize

        4KB

      • memory/2084-50-0x000007FFFFFDF000-0x000007FFFFFE0000-memory.dmp

        Filesize

        4KB

      • memory/2348-31-0x00000000740CE000-0x00000000740CF000-memory.dmp

        Filesize

        4KB

      • memory/2348-45-0x0000000000F80000-0x0000000000FDE000-memory.dmp

        Filesize

        376KB

      • memory/2496-29-0x0000000002560000-0x0000000002561000-memory.dmp

        Filesize

        4KB

      • memory/2884-44-0x0000000000080000-0x00000000000A0000-memory.dmp

        Filesize

        128KB

      • memory/2884-40-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

        Filesize

        4KB

      • memory/2884-34-0x0000000000080000-0x00000000000A0000-memory.dmp

        Filesize

        128KB

      • memory/2884-32-0x0000000000080000-0x00000000000A0000-memory.dmp

        Filesize

        128KB

      • memory/3016-63-0x0000000000D70000-0x0000000000DCE000-memory.dmp

        Filesize

        376KB