Analysis

  • max time kernel
    2s
  • max time network
    115s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    09-10-2024 18:07

General

  • Target

    27fe4a4fda2bb49f457c8d09ddd52e953a1812fcb442a0303033f5124d28e05bN.exe

  • Size

    2.0MB

  • MD5

    8eafa73c310e5696ef8c6eede692bcb0

  • SHA1

    8c006502c13c906ba1c425bd60777d744ec6759b

  • SHA256

    27fe4a4fda2bb49f457c8d09ddd52e953a1812fcb442a0303033f5124d28e05b

  • SHA512

    a0d661976d9e28343db958f544439db726a17e29d8fb5e81c5a9de09cfd5f73d6629e2c2a52be110f17ee2363111e8e5659d8ec94909f49dbe1c7a1f59558c92

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKYQ:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9YK

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 8 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 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 behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\27fe4a4fda2bb49f457c8d09ddd52e953a1812fcb442a0303033f5124d28e05bN.exe
    "C:\Users\Admin\AppData\Local\Temp\27fe4a4fda2bb49f457c8d09ddd52e953a1812fcb442a0303033f5124d28e05bN.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:1712
    • 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:2400
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
        • Maps connected drives based on registry
        PID:1920
    • 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
      PID:1792
      • 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:2816
      • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
        "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
        3⤵
          PID:2628
          • 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:872
      • C:\Users\Admin\AppData\Local\Temp\27fe4a4fda2bb49f457c8d09ddd52e953a1812fcb442a0303033f5124d28e05bN.exe
        "C:\Users\Admin\AppData\Local\Temp\27fe4a4fda2bb49f457c8d09ddd52e953a1812fcb442a0303033f5124d28e05bN.exe"
        2⤵
        • System Location Discovery: System Language Discovery
        PID:2996
      • 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:2600
    • C:\Windows\system32\taskeng.exe
      taskeng.exe {1739344F-DA07-4CC9-B3C7-33EC6287B062} S-1-5-21-3063565911-2056067323-3330884624-1000:KHBTHJFA\Admin:Interactive:[1]
      1⤵
        PID:2524
        • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
          C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
          2⤵
            PID:1636
            • C:\Users\Admin\AppData\Local\Temp\vnc.exe
              "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
              3⤵
                PID:1628
                • C:\Windows\system32\svchost.exe
                  C:\Windows\system32\svchost.exe -k
                  4⤵
                    PID:1988
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -u -p 1628 -s 160
                    4⤵
                    • Program crash
                    PID:2080
                • C:\Users\Admin\AppData\Local\Temp\windef.exe
                  "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                  3⤵
                    PID:2820
                  • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                    "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
                    3⤵
                      PID:2916
                    • 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:3052

                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\62B1RQ7E.txt

                  Filesize

                  209B

                  MD5

                  87cd75453bd877e38bb8f0ef952732f0

                  SHA1

                  f9dfc3c2de7c1025385c69ef56ef7073cb423fb2

                  SHA256

                  2c71ea61b4c42692c5a9955bcbf2ae59f6e4393e88a0f59b98a1491f762e41c4

                  SHA512

                  5b91283427cea4e115f13eadd4499c70c859ce94c9919da088b4a339d39dbb4ce110ebe122eb00990db7ad202bf4e6632dd35deb674055a7bf2995e0f0d99318

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

                  Filesize

                  2.0MB

                  MD5

                  bfefbf767b7422cf28f63da85bb78545

                  SHA1

                  8f9a39b8aa1c19a0c342cc0d9a16b95096a61043

                  SHA256

                  c8adba06732b7fefac2fac4f3fca623d6495e206284f9df598ef40a1bb2f6d0b

                  SHA512

                  2166fef23e8ced9617d67d86d9b764fd38674f00c34c9abd56ede0b945281951034a0095ac9f50543e3d0a3ded15d61f9dd1b661330b510cab68bfbce9733c4e

                • \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/1712-31-0x0000000000C90000-0x0000000000C91000-memory.dmp

                  Filesize

                  4KB

                • memory/1792-32-0x0000000000380000-0x00000000003DE000-memory.dmp

                  Filesize

                  376KB

                • memory/1792-30-0x00000000742DE000-0x00000000742DF000-memory.dmp

                  Filesize

                  4KB

                • memory/1920-53-0x0000000000150000-0x00000000001EC000-memory.dmp

                  Filesize

                  624KB

                • memory/1920-49-0x0000000000150000-0x00000000001EC000-memory.dmp

                  Filesize

                  624KB

                • memory/1920-48-0x000007FFFFFDB000-0x000007FFFFFDC000-memory.dmp

                  Filesize

                  4KB

                • memory/1920-46-0x0000000000020000-0x0000000000021000-memory.dmp

                  Filesize

                  4KB

                • memory/2628-63-0x0000000000AD0000-0x0000000000B2E000-memory.dmp

                  Filesize

                  376KB

                • memory/2820-100-0x00000000001F0000-0x000000000024E000-memory.dmp

                  Filesize

                  376KB

                • memory/2916-106-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

                  Filesize

                  4KB

                • memory/2996-33-0x0000000000080000-0x00000000000A0000-memory.dmp

                  Filesize

                  128KB

                • memory/2996-35-0x0000000000080000-0x00000000000A0000-memory.dmp

                  Filesize

                  128KB

                • memory/2996-41-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

                  Filesize

                  4KB

                • memory/2996-45-0x0000000000080000-0x00000000000A0000-memory.dmp

                  Filesize

                  128KB