Analysis

  • max time kernel
    5s
  • max time network
    135s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    18-01-2025 12:46

General

  • Target

    f252d019f5eea405af89550fdb09f760b516032fa43141d999114513f83037aa.exe

  • Size

    2.0MB

  • MD5

    c62da13fc22bf58bee911169411e8473

  • SHA1

    cab989f50391af928764608db240f388cb8b676f

  • SHA256

    f252d019f5eea405af89550fdb09f760b516032fa43141d999114513f83037aa

  • SHA512

    efcbe8f52231d5eb283b5ebb805f60e5da8fcc17578dd60adfbd6157647ea268d0b589a3ca2ffee491e6ebb620ecdc167edb3763eee29327deeb8f4138f91ee3

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKYb:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9YJ

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 4 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).

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 8 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 3 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 37 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f252d019f5eea405af89550fdb09f760b516032fa43141d999114513f83037aa.exe
    "C:\Users\Admin\AppData\Local\Temp\f252d019f5eea405af89550fdb09f760b516032fa43141d999114513f83037aa.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:2440
    • 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:2756
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
        • Maps connected drives based on registry
        PID:2912
    • 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:2948
      • 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:2600
      • 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
        • Suspicious use of AdjustPrivilegeToken
        PID:3056
        • 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:2944
    • C:\Users\Admin\AppData\Local\Temp\f252d019f5eea405af89550fdb09f760b516032fa43141d999114513f83037aa.exe
      "C:\Users\Admin\AppData\Local\Temp\f252d019f5eea405af89550fdb09f760b516032fa43141d999114513f83037aa.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2848
    • 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:2800
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {C4DA05C4-8831-4101-AC74-EFFA64587260} S-1-5-21-2703099537-420551529-3771253338-1000:XECUDNCD\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1152
    • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
      C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      PID:2492
      • C:\Users\Admin\AppData\Local\Temp\vnc.exe
        "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
        3⤵
          PID:2408
          • C:\Windows\system32\svchost.exe
            C:\Windows\system32\svchost.exe -k
            4⤵
              PID:616
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 2408 -s 160
              4⤵
              • Program crash
              PID:2364
          • C:\Users\Admin\AppData\Local\Temp\windef.exe
            "C:\Users\Admin\AppData\Local\Temp\windef.exe"
            3⤵
              PID:1020
            • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
              "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
              3⤵
                PID:2160

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

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

            Filesize

            2.0MB

            MD5

            c9126cec4a6afe177ce995b720461249

            SHA1

            a3c285ec141d9536d54bc599c5a7219d4a04c19d

            SHA256

            e3d05756542544352b98bccb2cc22231f1eaf420aa5248ee58743b9e4d649342

            SHA512

            3a273a3cdd13e9463410194284f524929ad50628def89111c22c7278ab6dd51f7dba051914872f2037bb214a5c987617a4b5afea2b11208c0f8758a8e9ae4d2c

          • \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/1020-99-0x00000000010A0000-0x00000000010FE000-memory.dmp

            Filesize

            376KB

          • memory/2160-108-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

            Filesize

            4KB

          • memory/2440-96-0x0000000000B40000-0x0000000000B41000-memory.dmp

            Filesize

            4KB

          • memory/2848-38-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

            Filesize

            4KB

          • memory/2848-32-0x0000000000080000-0x00000000000A0000-memory.dmp

            Filesize

            128KB

          • memory/2848-30-0x0000000000080000-0x00000000000A0000-memory.dmp

            Filesize

            128KB

          • memory/2848-42-0x0000000000080000-0x00000000000A0000-memory.dmp

            Filesize

            128KB

          • memory/2912-46-0x0000000000020000-0x0000000000021000-memory.dmp

            Filesize

            4KB

          • memory/2912-53-0x00000000002F0000-0x000000000038C000-memory.dmp

            Filesize

            624KB

          • memory/2912-49-0x00000000002F0000-0x000000000038C000-memory.dmp

            Filesize

            624KB

          • memory/2912-48-0x000007FFFFFD8000-0x000007FFFFFD9000-memory.dmp

            Filesize

            4KB

          • memory/2948-45-0x0000000000D50000-0x0000000000DAE000-memory.dmp

            Filesize

            376KB

          • memory/3056-65-0x0000000000AB0000-0x0000000000B0E000-memory.dmp

            Filesize

            376KB