Analysis

  • max time kernel
    1s
  • max time network
    23s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    28-01-2025 03:34

General

  • Target

    cd2fbad7de3454ead5efd638a3d42799665c7b3ec2a818f9aea661f96a6b27b2.exe

  • Size

    2.0MB

  • MD5

    37ec6a58666f4198cec32690f5efd70b

  • SHA1

    d91b490f7030bb64b7950dbf2a761ea49b301458

  • SHA256

    cd2fbad7de3454ead5efd638a3d42799665c7b3ec2a818f9aea661f96a6b27b2

  • SHA512

    40c304613abe69fef1668e629dbc8e5432ecb830fcd30254947a595bde0d2c004ee7e745e594eb3e6f0e88acd1daf68390ffab981d096346ed64349b75bd3391

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKY9:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9YL

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.

  • Azorult family
  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar family
  • 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).

  • 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 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\cd2fbad7de3454ead5efd638a3d42799665c7b3ec2a818f9aea661f96a6b27b2.exe
    "C:\Users\Admin\AppData\Local\Temp\cd2fbad7de3454ead5efd638a3d42799665c7b3ec2a818f9aea661f96a6b27b2.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:2512
    • 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:348
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
        • Maps connected drives based on registry
        PID:3028
    • 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:2780
      • 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:784
      • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
        "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
        3⤵
          PID:320
          • 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:2912
      • C:\Users\Admin\AppData\Local\Temp\cd2fbad7de3454ead5efd638a3d42799665c7b3ec2a818f9aea661f96a6b27b2.exe
        "C:\Users\Admin\AppData\Local\Temp\cd2fbad7de3454ead5efd638a3d42799665c7b3ec2a818f9aea661f96a6b27b2.exe"
        2⤵
        • System Location Discovery: System Language Discovery
        PID:2724
      • 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:2816
    • C:\Windows\system32\taskeng.exe
      taskeng.exe {B37F9D83-BA72-4035-BCFC-FEEE95D3E566} S-1-5-21-3063565911-2056067323-3330884624-1000:KHBTHJFA\Admin:Interactive:[1]
      1⤵
        PID:1932
        • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
          C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
          2⤵
            PID:1616
            • C:\Users\Admin\AppData\Local\Temp\vnc.exe
              "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
              3⤵
                PID:2116

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

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

            Filesize

            2.0MB

            MD5

            87e03270afaead0899da10e4ada4977b

            SHA1

            ad976292e53a661085ecc8dba08cd2ed7554dacb

            SHA256

            2b6e6364ebe6c4682a8de3632581be799a670fec8ea0713115350de4d6c464c7

            SHA512

            61f111aaef3dc9862f5e7d33ceea9d916a20d9016e709d7240491f7ca109db2305ee743a5cdc2459063df62b407e8fa3091231ce83b61d0669aa33c4901299c8

          • \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/320-64-0x00000000003B0000-0x000000000040E000-memory.dmp

            Filesize

            376KB

          • memory/2512-29-0x0000000000B00000-0x0000000000B01000-memory.dmp

            Filesize

            4KB

          • memory/2724-43-0x0000000000080000-0x00000000000A0000-memory.dmp

            Filesize

            128KB

          • memory/2724-30-0x0000000000080000-0x00000000000A0000-memory.dmp

            Filesize

            128KB

          • memory/2724-32-0x0000000000080000-0x00000000000A0000-memory.dmp

            Filesize

            128KB

          • memory/2724-38-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

            Filesize

            4KB

          • memory/2780-46-0x0000000000DD0000-0x0000000000E2E000-memory.dmp

            Filesize

            376KB

          • memory/3028-49-0x000007FFFFFDB000-0x000007FFFFFDC000-memory.dmp

            Filesize

            4KB

          • memory/3028-47-0x0000000000020000-0x0000000000021000-memory.dmp

            Filesize

            4KB

          • memory/3028-50-0x00000000001E0000-0x000000000027C000-memory.dmp

            Filesize

            624KB

          • memory/3028-54-0x00000000001E0000-0x000000000027C000-memory.dmp

            Filesize

            624KB