Analysis

  • max time kernel
    3s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    09-09-2024 11:54

General

  • Target

    98ace9f94c3c7319003cf5bf4dd93480N.exe

  • Size

    2.0MB

  • MD5

    98ace9f94c3c7319003cf5bf4dd93480

  • SHA1

    45dc5e6152f95f6ae17028ece647ede0dbd7cead

  • SHA256

    9c0576b27ea39081f9e433870a8b276e4b6e79be1ac1a9534b0d2c5e10996af3

  • SHA512

    b5e0889cfbba00ef468e5fbd33b5344dbbfb21f05c0de0e8131df1e77b76def3a551ab5295a3a6773a085b9984afdaca2b69b361f93e93b23acb09c207ad531c

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKY1:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9Yj

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 3 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 6 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 AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\98ace9f94c3c7319003cf5bf4dd93480N.exe
    "C:\Users\Admin\AppData\Local\Temp\98ace9f94c3c7319003cf5bf4dd93480N.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:2056
    • 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:2356
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
        • Maps connected drives based on registry
        PID:2956
    • 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
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1232
      • 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:1484
      • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
        "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
        3⤵
          PID:852
          • 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:1808
      • C:\Users\Admin\AppData\Local\Temp\98ace9f94c3c7319003cf5bf4dd93480N.exe
        "C:\Users\Admin\AppData\Local\Temp\98ace9f94c3c7319003cf5bf4dd93480N.exe"
        2⤵
        • System Location Discovery: System Language Discovery
        PID:2748
      • 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:2848
    • C:\Windows\system32\taskeng.exe
      taskeng.exe {DB7330E9-5CA9-409F-B344-071AA479F370} S-1-5-21-3290804112-2823094203-3137964600-1000:VORHPBAB\Admin:Interactive:[1]
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:1020
      • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
        C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
        2⤵
        • Executes dropped EXE
        PID:1512
        • C:\Users\Admin\AppData\Local\Temp\vnc.exe
          "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
          3⤵
            PID:1632
            • C:\Windows\system32\svchost.exe
              C:\Windows\system32\svchost.exe -k
              4⤵
                PID:2336
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 1632 -s 160
                4⤵
                • Program crash
                PID:2208
            • C:\Users\Admin\AppData\Local\Temp\windef.exe
              "C:\Users\Admin\AppData\Local\Temp\windef.exe"
              3⤵
                PID:2136
              • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
                3⤵
                  PID:3032
                • 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:1892

            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\DDIF8HRM.txt

              Filesize

              209B

              MD5

              b1f1f6826382b15b4b4f59d7d9b9023e

              SHA1

              6e6fc3221cff124325bd02f6b488ea0646b22cc4

              SHA256

              4ee62275a21f8228305442a2ae6ac083638ac39bfa71bdc6c2d9303da5496797

              SHA512

              0e49ab76f0ec26b44c196e2e1a8e9bd667796d42e64c094a3391bc2be8d9c15256363a9cf4ea61ca67af785232c70abbd0b7ae9761aa623735272c288a00b813

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

              Filesize

              2.0MB

              MD5

              d8e626641bae98cdd1662705d280380c

              SHA1

              16a615db9a74b7780a61dd4b213ed5d980e6c2d5

              SHA256

              8276305e3bcbf2199029ace9d4d449415350689c3030caf64e345d0fa230e16d

              SHA512

              f1790730a52486140357a8827aa9d272c7b61d5ac4a9172a52eb788da82e528a81eb750967358bec267a936738151748c86dd24b6b7796b162cce891a9594dd3

            • \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/852-64-0x0000000000E90000-0x0000000000EEE000-memory.dmp

              Filesize

              376KB

            • memory/1232-46-0x00000000000E0000-0x000000000013E000-memory.dmp

              Filesize

              376KB

            • memory/2056-30-0x0000000000780000-0x0000000000781000-memory.dmp

              Filesize

              4KB

            • memory/2136-99-0x0000000000900000-0x000000000095E000-memory.dmp

              Filesize

              376KB

            • memory/2748-39-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

              Filesize

              4KB

            • memory/2748-33-0x0000000000080000-0x00000000000A0000-memory.dmp

              Filesize

              128KB

            • memory/2748-43-0x0000000000080000-0x00000000000A0000-memory.dmp

              Filesize

              128KB

            • memory/2748-31-0x0000000000080000-0x00000000000A0000-memory.dmp

              Filesize

              128KB

            • memory/2956-50-0x00000000003F0000-0x000000000048C000-memory.dmp

              Filesize

              624KB

            • memory/2956-54-0x00000000003F0000-0x000000000048C000-memory.dmp

              Filesize

              624KB

            • memory/2956-47-0x0000000000020000-0x0000000000021000-memory.dmp

              Filesize

              4KB

            • memory/2956-49-0x000007FFFFFD3000-0x000007FFFFFD4000-memory.dmp

              Filesize

              4KB

            • memory/3032-105-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

              Filesize

              4KB