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Analysis

  • max time kernel
    3s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240215-en
  • resource tags

    arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
  • submitted
    02/06/2024, 02:31

General

  • Target

    c66af7563a21e575f94846a343bcc2180555177b238f424ce72cd4a03c81bcb0.exe

  • Size

    2.0MB

  • MD5

    8548db03f99bb1f196f630a90177cc60

  • SHA1

    8e098e4196ae0141ba331f297fb226c8cae19aea

  • SHA256

    c66af7563a21e575f94846a343bcc2180555177b238f424ce72cd4a03c81bcb0

  • SHA512

    8568953517932967da12c84d56055d688f4ce80dd3c8ecd2c2c0d72cd26be4926823e007c33ad5afa89ed6d449a6619bbeccfd934d0fc526d146b4232195c263

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKYA:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9Ye

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
  • Detects Windows executables referencing non-Windows User-Agents 5 IoCs
  • Detects executables containing common artifacts observed in infostealers 5 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 13 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
  • Creates scheduled task(s) 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 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 39 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c66af7563a21e575f94846a343bcc2180555177b238f424ce72cd4a03c81bcb0.exe
    "C:\Users\Admin\AppData\Local\Temp\c66af7563a21e575f94846a343bcc2180555177b238f424ce72cd4a03c81bcb0.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1972
    • C:\Users\Admin\AppData\Local\Temp\vnc.exe
      "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:2212
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
          PID:2596
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2212 -s 160
          3⤵
          • Loads dropped DLL
          • Program crash
          PID:2416
      • C:\Users\Admin\AppData\Local\Temp\windef.exe
        "C:\Users\Admin\AppData\Local\Temp\windef.exe"
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2620
        • 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⤵
          • Creates scheduled task(s)
          PID:640
        • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
          "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:1868
          • 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⤵
            • Creates scheduled task(s)
            PID:1596
      • C:\Users\Admin\AppData\Local\Temp\c66af7563a21e575f94846a343bcc2180555177b238f424ce72cd4a03c81bcb0.exe
        "C:\Users\Admin\AppData\Local\Temp\c66af7563a21e575f94846a343bcc2180555177b238f424ce72cd4a03c81bcb0.exe"
        2⤵
          PID:2408
        • 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⤵
          • Creates scheduled task(s)
          PID:384
      • C:\Windows\system32\taskeng.exe
        taskeng.exe {90EFA261-D3F1-4AAE-88B8-E248C57ECF6B} S-1-5-21-2248906074-2862704502-246302768-1000:GHPZRGFC\Admin:Interactive:[1]
        1⤵
          PID:2196
          • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
            C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
            2⤵
              PID:1284
              • C:\Users\Admin\AppData\Local\Temp\vnc.exe
                "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
                3⤵
                  PID:1700
                  • C:\Windows\system32\svchost.exe
                    C:\Windows\system32\svchost.exe -k
                    4⤵
                      PID:2004
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -u -p 1700 -s 160
                      4⤵
                      • Program crash
                      PID:1976
                  • C:\Users\Admin\AppData\Local\Temp\windef.exe
                    "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                    3⤵
                      PID:2872
                    • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                      "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
                      3⤵
                        PID:2052
                      • 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⤵
                        • Creates scheduled task(s)
                        PID:1808

                  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\Local\Temp\windef.exe

                    Filesize

                    349KB

                    MD5

                    b4a202e03d4135484d0e730173abcc72

                    SHA1

                    01b30014545ea526c15a60931d676f9392ea0c70

                    SHA256

                    7050608d53f80269df951d00883ed79815c060ce7678a76b5c3f6a2a985beea9

                    SHA512

                    632a035a3b722ea29b02aad1f0da3df5bdc38abc7e6617223790955c6c0830f1070b528680416d5c63ea5e846074cdad87f06c21c35a77b1ccc4edc089d8b1fb

                  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\809OCLL1.txt

                    Filesize

                    209B

                    MD5

                    38952d3eccb45d880d1af03c51adfa51

                    SHA1

                    9cbcace4323d14450511d98bb1c020e4174f6864

                    SHA256

                    af42e2f76056b1527a80d66f7981e4240d609c061c73cd8b4943f17bd4bc645f

                    SHA512

                    e5c6bb2cbcf5b62548916ecc3a58a21e2c6ef584f7aa3e1ea5039aca238dbc1dd2ce55210d325f623fb31166346c25df6397f3cb630636a55c2a7532f966faaf

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

                    Filesize

                    2.0MB

                    MD5

                    3b4c3f7077a461c8bcfc06c319ac4311

                    SHA1

                    fd31879d63fda5bd157aa5565cfcdd064f8f9a6b

                    SHA256

                    5fac24a59b3c0d045177d747f481a3799acb1977288da5a1f8cacd4383859e9b

                    SHA512

                    f35022abe23e1e6e61dd582cd786c35be73ae1b55aa515b46db8eced335bdcdeddfd1dc1e4006356cda9c5172bf1df734c61c8cc878e6dbe2a013a8a4b8c6777

                  • memory/1868-60-0x0000000000BC0000-0x0000000000C1E000-memory.dmp

                    Filesize

                    376KB

                  • memory/1972-29-0x00000000001E0000-0x00000000001E1000-memory.dmp

                    Filesize

                    4KB

                  • memory/2052-89-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

                    Filesize

                    4KB

                  • memory/2408-43-0x0000000000080000-0x00000000000A0000-memory.dmp

                    Filesize

                    128KB

                  • memory/2408-32-0x0000000000080000-0x00000000000A0000-memory.dmp

                    Filesize

                    128KB

                  • memory/2408-38-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

                    Filesize

                    4KB

                  • memory/2408-30-0x0000000000080000-0x00000000000A0000-memory.dmp

                    Filesize

                    128KB

                  • memory/2620-46-0x00000000001C0000-0x000000000021E000-memory.dmp

                    Filesize

                    376KB

                  • memory/2872-98-0x0000000001270000-0x00000000012CE000-memory.dmp

                    Filesize

                    376KB