Analysis

  • max time kernel
    4s
  • max time network
    145s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    31-08-2024 01:46

General

  • Target

    877106f8412be6c602573e6ece4b51e3dd4eaa33030946b9ae785ed9d19933a4.exe

  • Size

    2.0MB

  • MD5

    b83b407650a4430de314fab0699bee00

  • SHA1

    daa90ab02e6073469b64ff0ff17aeb6e11cdb6f4

  • SHA256

    877106f8412be6c602573e6ece4b51e3dd4eaa33030946b9ae785ed9d19933a4

  • SHA512

    4bc00830b9f31f69fe45584b06373527e0941d3a967f76ce681a05fa07b1d1f0ac7ffed1f1a926bdece3c78d6ea5d5f6b02b9ce29e97899afb4c968d850497b6

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKYJ:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9YT

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 5 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).

  • 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 4 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 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 37 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\877106f8412be6c602573e6ece4b51e3dd4eaa33030946b9ae785ed9d19933a4.exe
    "C:\Users\Admin\AppData\Local\Temp\877106f8412be6c602573e6ece4b51e3dd4eaa33030946b9ae785ed9d19933a4.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:3004
    • 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:2344
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
        • Maps connected drives based on registry
        PID:2644
    • 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:3056
      • 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:1944
      • 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
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1708
        • 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⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:2352
    • C:\Users\Admin\AppData\Local\Temp\877106f8412be6c602573e6ece4b51e3dd4eaa33030946b9ae785ed9d19933a4.exe
      "C:\Users\Admin\AppData\Local\Temp\877106f8412be6c602573e6ece4b51e3dd4eaa33030946b9ae785ed9d19933a4.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2764
    • 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:2824
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {9046641B-055D-4C22-B1F5-6FE7569BAEB5} S-1-5-21-1506706701-1246725540-2219210854-1000:MUYDDIIS\Admin:Interactive:[1]
    1⤵
      PID:380
      • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
        C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
        2⤵
          PID:468
          • C:\Users\Admin\AppData\Local\Temp\vnc.exe
            "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
            3⤵
              PID:1692
              • C:\Windows\system32\svchost.exe
                C:\Windows\system32\svchost.exe -k
                4⤵
                  PID:1176
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -u -p 1692 -s 160
                  4⤵
                  • Program crash
                  PID:780
              • C:\Users\Admin\AppData\Local\Temp\windef.exe
                "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                3⤵
                  PID:1788
                • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                  "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
                  3⤵
                    PID:2392
                  • 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
                    3⤵
                    • Scheduled Task/Job: Scheduled Task
                    PID:408

              Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              • C:\Users\Admin\AppData\Local\Temp\vnc.exe

                MD5

                d41d8cd98f00b204e9800998ecf8427e

                SHA1

                da39a3ee5e6b4b0d3255bfef95601890afd80709

                SHA256

                e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                SHA512

                cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

              • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\RJ6RAQ0H.txt

                Filesize

                211B

                MD5

                5db795e562d3c41ae6f75b250744e1b1

                SHA1

                1f43d7232648a1e17a7ffd5f999c293554507402

                SHA256

                134b921662c2dd53ac03462b962ef5b15cc6e1a5cf6b0ec5771c0eec86094bdf

                SHA512

                1dd1b98589b7d01df35536fc62706f0f18ae27ebf4aa217fc422d0f84c3f6775182e5916be5cf6538527fc7b310efd0f3b6d3001bac28bf20b31fd7b2e56f153

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

                Filesize

                2.0MB

                MD5

                e9cd32bcd7b80c49f4d08e1541d5dd18

                SHA1

                d0b639e9253858334a1b3f7571ce4fb2d342d1b0

                SHA256

                e506c67548627db0ec69eb96190abf8b3cd0fdc4aca5051a72316328024351a3

                SHA512

                88886af9207a39710a778d1794a2041042b0bbd64ea94c006f96767b7c9bafc0b7a1803fa1907306969de1a8b6307804dca0b8c7bfd4890ef57970ea718a8073

              • \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/1708-62-0x0000000000BB0000-0x0000000000C0E000-memory.dmp

                Filesize

                376KB

              • memory/1788-109-0x0000000000FA0000-0x0000000000FFE000-memory.dmp

                Filesize

                376KB

              • memory/2392-99-0x00000000000C0000-0x00000000000E0000-memory.dmp

                Filesize

                128KB

              • memory/2392-102-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

                Filesize

                4KB

              • memory/2392-106-0x00000000000C0000-0x00000000000E0000-memory.dmp

                Filesize

                128KB

              • memory/2644-54-0x00000000000D0000-0x000000000016C000-memory.dmp

                Filesize

                624KB

              • memory/2644-50-0x00000000000D0000-0x000000000016C000-memory.dmp

                Filesize

                624KB

              • memory/2644-47-0x0000000000020000-0x0000000000021000-memory.dmp

                Filesize

                4KB

              • memory/2644-49-0x000007FFFFFDF000-0x000007FFFFFE0000-memory.dmp

                Filesize

                4KB

              • memory/2764-33-0x0000000000080000-0x00000000000A0000-memory.dmp

                Filesize

                128KB

              • memory/2764-31-0x0000000000080000-0x00000000000A0000-memory.dmp

                Filesize

                128KB

              • memory/2764-39-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

                Filesize

                4KB

              • memory/2764-43-0x0000000000080000-0x00000000000A0000-memory.dmp

                Filesize

                128KB

              • memory/3004-30-0x0000000002560000-0x0000000002561000-memory.dmp

                Filesize

                4KB

              • memory/3056-46-0x0000000000C00000-0x0000000000C5E000-memory.dmp

                Filesize

                376KB