Analysis

  • max time kernel
    3s
  • max time network
    80s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    01-09-2024 15:38

General

  • Target

    815df3ce8f1ebbbdcf8fd3b5391a2a70N.exe

  • Size

    2.0MB

  • MD5

    815df3ce8f1ebbbdcf8fd3b5391a2a70

  • SHA1

    cc19616d3d9ed0dd4ef6bac2fcf5251bec303f67

  • SHA256

    24ce8da6f76bfa558cff3079df170e78893679ccce334fadaf21d961291b30f0

  • SHA512

    0aec8172b2b689874b50d5861a11f16cd8dc22116f46a108f1491e14b669bd15f34b1c5cb9ea356a0c1fbfe154ef66050dbf43e74cedc2992e1c3fa3e11b8bc1

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKY4:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9Y2

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 2 IoCs
  • Loads dropped DLL 12 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.

  • AutoIT Executable 1 IoCs

    AutoIT scripts compiled to PE executables.

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

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

  • Program crash 2 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 4 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 27 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\815df3ce8f1ebbbdcf8fd3b5391a2a70N.exe
    "C:\Users\Admin\AppData\Local\Temp\815df3ce8f1ebbbdcf8fd3b5391a2a70N.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:2472
    • 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:2804
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
          PID:2480
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2804 -s 160
          3⤵
          • Loads dropped DLL
          • Program crash
          PID:2088
      • 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
        • Suspicious use of AdjustPrivilegeToken
        PID:2720
        • 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:2420
        • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
          "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
          3⤵
            PID:1552
            • 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:1592
        • C:\Users\Admin\AppData\Local\Temp\815df3ce8f1ebbbdcf8fd3b5391a2a70N.exe
          "C:\Users\Admin\AppData\Local\Temp\815df3ce8f1ebbbdcf8fd3b5391a2a70N.exe"
          2⤵
          • System Location Discovery: System Language Discovery
          PID:2968
        • 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:2604
      • C:\Windows\system32\taskeng.exe
        taskeng.exe {4B6E6F85-4317-4FDB-88C8-3C7282DF9962} S-1-5-21-3294248377-1418901787-4083263181-1000:FMEDFXFE\Admin:Interactive:[1]
        1⤵
          PID:696
          • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
            C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
            2⤵
              PID:2400
              • C:\Users\Admin\AppData\Local\Temp\vnc.exe
                "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
                3⤵
                  PID:2008
                  • C:\Windows\system32\svchost.exe
                    C:\Windows\system32\svchost.exe -k
                    4⤵
                      PID:3012
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -u -p 2008 -s 180
                      4⤵
                      • Program crash
                      PID:1404
                  • C:\Users\Admin\AppData\Local\Temp\windef.exe
                    "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                    3⤵
                      PID:1124
                    • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                      "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
                      3⤵
                        PID:2272
                      • 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:2040

                  Network

                  MITRE ATT&CK Enterprise v15

                  Replay Monitor

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                  Downloads

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

                    Filesize

                    405KB

                    MD5

                    b8ba87ee4c3fc085a2fed0d839aadce1

                    SHA1

                    b3a2e3256406330e8b1779199bb2b9865122d766

                    SHA256

                    4e8a99cd33c9e5c747a3ce8f1a3e17824846f4a8f7cb0631aebd0815db2ce3a4

                    SHA512

                    7a775a12cd5bcd182d64be0d31f800b456ca6d1b531189cea9c72e1940871cfe92ccd005938f67bfa4784ae44c54b3a7ea29a5bb59766e98c78bf53b680f2ab2

                  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\UHW3ENY7.txt

                    Filesize

                    207B

                    MD5

                    48f0b8ba7ecd9758a9257969f29ba915

                    SHA1

                    14d1575c2f86ed478ce146af61253438a6672847

                    SHA256

                    5abcacae3db3fe70c295a181725a1e3b97ee81cae86be5792496f1e743c53b72

                    SHA512

                    0b9388af92b8639a520dcae7f11e47720de7982f10bcc1f850b44783cdff8c0f73c3026ce2d4f221db475035887852793647088b7d24a5e89f64d1d1b2f0321e

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

                    Filesize

                    2.0MB

                    MD5

                    fc35aa473140baa7b07445fe50846c34

                    SHA1

                    c2dae9c7cd696879529ddd4806fa354f30e90207

                    SHA256

                    9febbdb54726abc15708d17dd4e927f4160897076ce1830b64438a3eb1e2d333

                    SHA512

                    67660c0ed387499ecfed016ac6854bb97c0e63c540cbbc270364c6ca31c4db2121cc7006255159e36c33c65c27e907ed4ab04b027ae3503ff1f243714873b2e2

                  • \Users\Admin\AppData\Local\Temp\windef.exe

                    Filesize

                    349KB

                    MD5

                    b4a202e03d4135484d0e730173abcc72

                    SHA1

                    01b30014545ea526c15a60931d676f9392ea0c70

                    SHA256

                    7050608d53f80269df951d00883ed79815c060ce7678a76b5c3f6a2a985beea9

                    SHA512

                    632a035a3b722ea29b02aad1f0da3df5bdc38abc7e6617223790955c6c0830f1070b528680416d5c63ea5e846074cdad87f06c21c35a77b1ccc4edc089d8b1fb

                  • memory/1124-98-0x0000000000B70000-0x0000000000BCE000-memory.dmp

                    Filesize

                    376KB

                  • memory/1552-60-0x0000000000E40000-0x0000000000E9E000-memory.dmp

                    Filesize

                    376KB

                  • memory/2272-89-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

                    Filesize

                    4KB

                  • memory/2272-93-0x00000000000D0000-0x00000000000F0000-memory.dmp

                    Filesize

                    128KB

                  • memory/2272-86-0x00000000000D0000-0x00000000000F0000-memory.dmp

                    Filesize

                    128KB

                  • memory/2472-28-0x0000000000C60000-0x0000000000C61000-memory.dmp

                    Filesize

                    4KB

                  • memory/2720-46-0x0000000000D40000-0x0000000000D9E000-memory.dmp

                    Filesize

                    376KB

                  • memory/2968-33-0x0000000000080000-0x00000000000A0000-memory.dmp

                    Filesize

                    128KB

                  • memory/2968-31-0x0000000000080000-0x00000000000A0000-memory.dmp

                    Filesize

                    128KB

                  • memory/2968-39-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

                    Filesize

                    4KB

                  • memory/2968-43-0x0000000000080000-0x00000000000A0000-memory.dmp

                    Filesize

                    128KB