Analysis

  • max time kernel
    1s
  • max time network
    16s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    15-12-2023 03:32

General

  • Target

    08c110a8bc7a1db1927dc61b31004092.exe

  • Size

    2.0MB

  • MD5

    08c110a8bc7a1db1927dc61b31004092

  • SHA1

    ffcdc5eb36dfcf7e6ab37a8894e98a4606389041

  • SHA256

    505c8655a2adb1ad0976147c6777a9220e38ea6f2ab72d0575c5ef5d3a7a3f83

  • SHA512

    aef2e0fb3a68f9f20ea264841ada8435926e9b0159e8e6b5da9fa1809c8968fa6ef10b7de8b8bc2ae744b26226467c1838bacf0acacb528e6d02fafd3d185a95

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKYc: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 6 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.

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

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

  • Creates scheduled task(s) 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\08c110a8bc7a1db1927dc61b31004092.exe
    "C:\Users\Admin\AppData\Local\Temp\08c110a8bc7a1db1927dc61b31004092.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:624
    • C:\Users\Admin\AppData\Local\Temp\vnc.exe
      "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:2348
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
        • Maps connected drives based on registry
        PID:544
    • C:\Users\Admin\AppData\Local\Temp\windef.exe
      "C:\Users\Admin\AppData\Local\Temp\windef.exe"
      2⤵
      • Executes dropped EXE
      PID:1680
      • 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:2500
      • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
        "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
        3⤵
          PID:2916
          • 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:1516
      • C:\Users\Admin\AppData\Local\Temp\08c110a8bc7a1db1927dc61b31004092.exe
        "C:\Users\Admin\AppData\Local\Temp\08c110a8bc7a1db1927dc61b31004092.exe"
        2⤵
          PID:2656
        • 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:2568

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe

        Filesize

        203KB

        MD5

        b162818259997d66e323b26eb3e34e1b

        SHA1

        2fc74c8211f1a7712a4005e31bc88295c8df2312

        SHA256

        ba91e189d98587fe374a7e03ed39397bd8d0e660f84c768fa23dd1117fa9f2e5

        SHA512

        78776659193ce62e473c76ae675b01fa9f3dd2b676a13b7ddb11b04baaee1f8e427a21f4f380b5b347c28f9a059f8c95fa5170dddfcc16b50563ceaa5bfdcc04

      • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe

        Filesize

        131KB

        MD5

        2ecf48d56e873443887b3395f3b48150

        SHA1

        99d0432e8fb9169189864d01b4a79f028416d2d9

        SHA256

        86f61f82c1e022d0656f51c8bd363d2dd61da19d0adf5d91872c131a837c731a

        SHA512

        780f9501ee44da8d0d1058532f82c8a5e7413203211bcfc18473be902748ff2e5604ed9541d1a8a68d42a37272c0189b2a2ee361f9b911306cd4216f76afc0f5

      • \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

      • \Users\Admin\AppData\Roaming\SubDir\winsock.exe

        Filesize

        327KB

        MD5

        9fe2544cd04962cbcf04c04c67f80e86

        SHA1

        dc78f46f5ecf38775380c86d1bcf89247f386d1c

        SHA256

        da547709f93e096f4b96b4217c711d9cc59ca8424a570eb29e1c2b11b38d1d8b

        SHA512

        2b96813a491a34624977847cc1e7dc69748cdd0aa76b25b7edd86456b1bf6deeb0b1ebf9f7baafe3160608f438217699f8d32a66dd4d9bb0e96b36c8c7d54791

      • memory/544-56-0x0000000000350000-0x00000000003EC000-memory.dmp

        Filesize

        624KB

      • memory/544-39-0x0000000000020000-0x0000000000021000-memory.dmp

        Filesize

        4KB

      • memory/544-43-0x000007FFFFFD6000-0x000007FFFFFD7000-memory.dmp

        Filesize

        4KB

      • memory/544-58-0x0000000000020000-0x0000000000021000-memory.dmp

        Filesize

        4KB

      • memory/544-46-0x0000000000350000-0x00000000003EC000-memory.dmp

        Filesize

        624KB

      • memory/544-54-0x0000000000350000-0x00000000003EC000-memory.dmp

        Filesize

        624KB

      • memory/624-30-0x0000000002B90000-0x0000000002B91000-memory.dmp

        Filesize

        4KB

      • memory/1680-55-0x0000000073F70000-0x000000007465E000-memory.dmp

        Filesize

        6.9MB

      • memory/1680-57-0x00000000041A0000-0x00000000041E0000-memory.dmp

        Filesize

        256KB

      • memory/1680-36-0x00000000002D0000-0x000000000032E000-memory.dmp

        Filesize

        376KB

      • memory/1680-68-0x0000000073F70000-0x000000007465E000-memory.dmp

        Filesize

        6.9MB

      • memory/2656-52-0x0000000000400000-0x0000000000420000-memory.dmp

        Filesize

        128KB

      • memory/2656-42-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

        Filesize

        4KB

      • memory/2656-29-0x0000000000400000-0x0000000000420000-memory.dmp

        Filesize

        128KB

      • memory/2656-33-0x0000000000400000-0x0000000000420000-memory.dmp

        Filesize

        128KB

      • memory/2916-67-0x0000000073F70000-0x000000007465E000-memory.dmp

        Filesize

        6.9MB

      • memory/2916-66-0x0000000000C50000-0x0000000000CAE000-memory.dmp

        Filesize

        376KB

      • memory/2916-69-0x00000000008A0000-0x00000000008E0000-memory.dmp

        Filesize

        256KB