Analysis

  • max time kernel
    3s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    06-09-2024 06:42

General

  • Target

    a4ebf39cba4ff9fe727f9e0f6b965620N.exe

  • Size

    2.0MB

  • MD5

    a4ebf39cba4ff9fe727f9e0f6b965620

  • SHA1

    595e28bbb4071eaa622ca79c3f54d320a823a17a

  • SHA256

    6aa9609343f8ab04adcd92c3b6a9b9b3520283fce9342a2e1a239569dcdc571d

  • SHA512

    3f20bbece7fa8f4474c3eb696ecde6d371efd7a4fe77b23a42ff03fa848fe633b33afd518087b0c04815a317950d585cf917f3de6a045c95bec58589657bbd5f

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKYO:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9YQ

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 4 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.

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Runs ping.exe 1 TTPs 1 IoCs
  • 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 2 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a4ebf39cba4ff9fe727f9e0f6b965620N.exe
    "C:\Users\Admin\AppData\Local\Temp\a4ebf39cba4ff9fe727f9e0f6b965620N.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:1804
    • 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:1716
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
        • Maps connected drives based on registry
        PID:2632
    • 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:1596
      • 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:1376
      • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
        "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
        3⤵
          PID:2876
          • 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:1656
          • C:\Windows\SysWOW64\cmd.exe
            cmd /c ""C:\Users\Admin\AppData\Local\Temp\Yv8VOHs33tFS.bat" "
            4⤵
              PID:1772
              • C:\Windows\SysWOW64\chcp.com
                chcp 65001
                5⤵
                  PID:1940
                • C:\Windows\SysWOW64\PING.EXE
                  ping -n 10 localhost
                  5⤵
                  • System Network Configuration Discovery: Internet Connection Discovery
                  • Runs ping.exe
                  PID:696
                • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                  "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                  5⤵
                    PID:1036
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -u -p 2876 -s 1532
                  4⤵
                  • Program crash
                  PID:1952
            • C:\Users\Admin\AppData\Local\Temp\a4ebf39cba4ff9fe727f9e0f6b965620N.exe
              "C:\Users\Admin\AppData\Local\Temp\a4ebf39cba4ff9fe727f9e0f6b965620N.exe"
              2⤵
              • System Location Discovery: System Language Discovery
              PID:2732
            • 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:2704
          • C:\Windows\system32\taskeng.exe
            taskeng.exe {58DAE576-879E-47E3-9D14-2E0B0583B248} S-1-5-21-457978338-2990298471-2379561640-1000:WOUOSVRD\Admin:Interactive:[1]
            1⤵
              PID:1736
              • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                2⤵
                  PID:2864
                  • C:\Users\Admin\AppData\Local\Temp\vnc.exe
                    "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
                    3⤵
                      PID:2380
                      • C:\Windows\system32\svchost.exe
                        C:\Windows\system32\svchost.exe -k
                        4⤵
                          PID:1592
                      • C:\Users\Admin\AppData\Local\Temp\windef.exe
                        "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                        3⤵
                          PID:1340

                    Network

                    MITRE ATT&CK Enterprise v15

                    Replay Monitor

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                    Downloads

                    • C:\Users\Admin\AppData\Local\Temp\Yv8VOHs33tFS.bat

                      Filesize

                      208B

                      MD5

                      14cf280bb67bca9b4f725281ba7e375f

                      SHA1

                      5a0b75e7ef6760a8a86f8c5ed321de77748a1b19

                      SHA256

                      1a9044894a5fa7533d453899e285812e93a704b76786c2fcce0fcf23f531cefc

                      SHA512

                      5382417377b7d49e0bf4a36b800cc4e05bfe1c7bf06e52c71b0f6a2404d4c1216251832f39d3e2428e04f67b79c547c068300ff9e5ce528b96610a29bc7d4864

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

                      Filesize

                      2.0MB

                      MD5

                      28d4d0d65ddecc9c4c6ff7831b7bb87d

                      SHA1

                      58f24f52bdc233ba1c9bfaaf4628850a190c46bb

                      SHA256

                      a1c736c5b70688038c59244e807a3b10c97eefdc3d918aec9efaa8dc3b5d3497

                      SHA512

                      30110e830a7d7bb58871b4c4cd67a3f1f2bcfae13561b0ee68364d1451ca3aa812f03ddd050189855b05ea62cc0713be44014086cc350bb87a4f4d926e075d05

                    • \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/1592-102-0x000007FFFFFDC000-0x000007FFFFFDD000-memory.dmp

                      Filesize

                      4KB

                    • memory/1592-103-0x00000000003A0000-0x000000000043C000-memory.dmp

                      Filesize

                      624KB

                    • memory/1592-109-0x00000000003A0000-0x000000000043C000-memory.dmp

                      Filesize

                      624KB

                    • memory/1596-54-0x0000000001160000-0x00000000011BE000-memory.dmp

                      Filesize

                      376KB

                    • memory/1804-30-0x0000000000880000-0x0000000000881000-memory.dmp

                      Filesize

                      4KB

                    • memory/2632-46-0x000007FFFFFD5000-0x000007FFFFFD6000-memory.dmp

                      Filesize

                      4KB

                    • memory/2632-44-0x0000000000020000-0x0000000000021000-memory.dmp

                      Filesize

                      4KB

                    • memory/2632-47-0x0000000000350000-0x00000000003EC000-memory.dmp

                      Filesize

                      624KB

                    • memory/2632-51-0x0000000000350000-0x00000000003EC000-memory.dmp

                      Filesize

                      624KB

                    • memory/2732-39-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

                      Filesize

                      4KB

                    • memory/2732-31-0x0000000000080000-0x00000000000A0000-memory.dmp

                      Filesize

                      128KB

                    • memory/2732-33-0x0000000000080000-0x00000000000A0000-memory.dmp

                      Filesize

                      128KB

                    • memory/2732-43-0x0000000000080000-0x00000000000A0000-memory.dmp

                      Filesize

                      128KB

                    • memory/2876-64-0x0000000001000000-0x000000000105E000-memory.dmp

                      Filesize

                      376KB