Analysis

  • max time kernel
    2s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    07-12-2024 01:21

General

  • Target

    a3b6559f069073c87c7577e2c4b57580ebcb1139cf5a0c0e0e3e79894b228a5b.exe

  • Size

    2.0MB

  • MD5

    be0b192f83808a302ed9a8e374879076

  • SHA1

    e7b6a24f39961bc9f29836c88029c11aedc9d124

  • SHA256

    a3b6559f069073c87c7577e2c4b57580ebcb1139cf5a0c0e0e3e79894b228a5b

  • SHA512

    f97644932e62803af20aa3636f1c50ede644a839becdca7cafdda29162be677fce52c60b3f3e05dbfcb9a6d29de3fb49c85bbd5894fb18141c724bfea631d847

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKYr:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9YN

Malware Config

Extracted

Family

azorult

C2

http://0x21.in:8000/_az/

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

Signatures

  • Azorult

    An information stealer that was first discovered in 2016, targeting browsing history and passwords.

  • Azorult family
  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar family
  • Quasar payload 4 IoCs
  • Executes dropped EXE 6 IoCs
  • Loads dropped DLL 26 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.

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 4 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 7 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 4 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a3b6559f069073c87c7577e2c4b57580ebcb1139cf5a0c0e0e3e79894b228a5b.exe
    "C:\Users\Admin\AppData\Local\Temp\a3b6559f069073c87c7577e2c4b57580ebcb1139cf5a0c0e0e3e79894b228a5b.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:2436
    • 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 behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:2056
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
          PID:1732
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2056 -s 180
          3⤵
          • Loads dropped DLL
          • Program crash
          PID:2180
      • 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:2400
        • 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:2944
        • 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
          PID:2320
          • 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:880
          • C:\Windows\SysWOW64\cmd.exe
            cmd /c ""C:\Users\Admin\AppData\Local\Temp\zSmHwO1I9OIW.bat" "
            4⤵
              PID:1736
              • C:\Windows\SysWOW64\chcp.com
                chcp 65001
                5⤵
                  PID:2584
                • C:\Windows\SysWOW64\PING.EXE
                  ping -n 10 localhost
                  5⤵
                  • System Network Configuration Discovery: Internet Connection Discovery
                  • Runs ping.exe
                  PID:2332
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 2320 -s 1492
                4⤵
                • Program crash
                PID:3068
          • C:\Users\Admin\AppData\Local\Temp\a3b6559f069073c87c7577e2c4b57580ebcb1139cf5a0c0e0e3e79894b228a5b.exe
            "C:\Users\Admin\AppData\Local\Temp\a3b6559f069073c87c7577e2c4b57580ebcb1139cf5a0c0e0e3e79894b228a5b.exe"
            2⤵
            • System Location Discovery: System Language Discovery
            PID:2808
          • 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:2636

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        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\zSmHwO1I9OIW.bat

          Filesize

          208B

          MD5

          3f70a6f539b637335ad82f730d8e7b30

          SHA1

          2995bd0122fe09907b51b0257addfadfea35c2ec

          SHA256

          0fb3469f4eea242c139ebf95ade2ccf06e054f92d36e7b2600283bc3e2b7e8c8

          SHA512

          faf170bee9fd321a41aaa6f8ff640c3cba1fb5e1cec07152048ceafdac4010d633ae9dd76235153d7afb667b50ce0fcf91dfbe12c67d448571da8e26a46d3a2b

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

          Filesize

          349KB

          MD5

          b4a202e03d4135484d0e730173abcc72

          SHA1

          01b30014545ea526c15a60931d676f9392ea0c70

          SHA256

          7050608d53f80269df951d00883ed79815c060ce7678a76b5c3f6a2a985beea9

          SHA512

          632a035a3b722ea29b02aad1f0da3df5bdc38abc7e6617223790955c6c0830f1070b528680416d5c63ea5e846074cdad87f06c21c35a77b1ccc4edc089d8b1fb

        • memory/2320-58-0x0000000000020000-0x000000000007E000-memory.dmp

          Filesize

          376KB

        • memory/2320-58-0x0000000000020000-0x000000000007E000-memory.dmp

          Filesize

          376KB

        • memory/2400-46-0x0000000000AC0000-0x0000000000B1E000-memory.dmp

          Filesize

          376KB

        • memory/2400-46-0x0000000000AC0000-0x0000000000B1E000-memory.dmp

          Filesize

          376KB

        • memory/2436-42-0x0000000000720000-0x0000000000721000-memory.dmp

          Filesize

          4KB

        • memory/2436-62-0x0000000000720000-0x0000000000721000-memory.dmp

          Filesize

          4KB

        • memory/2436-42-0x0000000000720000-0x0000000000721000-memory.dmp

          Filesize

          4KB

        • memory/2436-62-0x0000000000720000-0x0000000000721000-memory.dmp

          Filesize

          4KB

        • memory/2808-30-0x0000000000080000-0x00000000000A0000-memory.dmp

          Filesize

          128KB

        • memory/2808-36-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

          Filesize

          4KB

        • memory/2808-28-0x0000000000080000-0x00000000000A0000-memory.dmp

          Filesize

          128KB

        • memory/2808-40-0x0000000000080000-0x00000000000A0000-memory.dmp

          Filesize

          128KB

        • memory/2808-40-0x0000000000080000-0x00000000000A0000-memory.dmp

          Filesize

          128KB

        • memory/2808-36-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

          Filesize

          4KB

        • memory/2808-30-0x0000000000080000-0x00000000000A0000-memory.dmp

          Filesize

          128KB

        • memory/2808-28-0x0000000000080000-0x00000000000A0000-memory.dmp

          Filesize

          128KB