Analysis

  • max time kernel
    1s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    16-07-2024 12:44

General

  • Target

    c0e141946d1767a29de73428a80a16d0N.exe

  • Size

    2.0MB

  • MD5

    c0e141946d1767a29de73428a80a16d0

  • SHA1

    0f4b0ff61ce688f7d47ba2d1b316d11bf40e85a7

  • SHA256

    2b0c9901e5c28f7d50a09068533ce627f8e3d11c5e7a1d80ea5141a7f7578aed

  • SHA512

    7f0b07261a07d88d737dcf33e4ea25c48041b656ead1ce62626b5c1f208b9f2ae552ae11fb86a3467b567c4a8fc1888776d7773a27995c1eee893eeeb41f6103

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKYN:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9YX

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.

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 4 IoCs
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 24 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 2 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 use of WriteProcessMemory 54 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c0e141946d1767a29de73428a80a16d0N.exe
    "C:\Users\Admin\AppData\Local\Temp\c0e141946d1767a29de73428a80a16d0N.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2880
    • C:\Users\Admin\AppData\Local\Temp\vnc.exe
      "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:2484
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
          PID:2820
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2484 -s 160
          3⤵
          • Loads dropped DLL
          • Program crash
          PID:2192
      • C:\Users\Admin\AppData\Local\Temp\windef.exe
        "C:\Users\Admin\AppData\Local\Temp\windef.exe"
        2⤵
        • Executes dropped EXE
        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:2500
        • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
          "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
          3⤵
            PID:2064
            • 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:1864
        • C:\Users\Admin\AppData\Local\Temp\c0e141946d1767a29de73428a80a16d0N.exe
          "C:\Users\Admin\AppData\Local\Temp\c0e141946d1767a29de73428a80a16d0N.exe"
          2⤵
            PID:1816
          • 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⤵
            • Scheduled Task/Job: Scheduled Task
            PID:3036

        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

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

          Filesize

          349KB

          MD5

          b4a202e03d4135484d0e730173abcc72

          SHA1

          01b30014545ea526c15a60931d676f9392ea0c70

          SHA256

          7050608d53f80269df951d00883ed79815c060ce7678a76b5c3f6a2a985beea9

          SHA512

          632a035a3b722ea29b02aad1f0da3df5bdc38abc7e6617223790955c6c0830f1070b528680416d5c63ea5e846074cdad87f06c21c35a77b1ccc4edc089d8b1fb

        • memory/1816-31-0x0000000000400000-0x0000000000420000-memory.dmp

          Filesize

          128KB

        • memory/1816-33-0x0000000000400000-0x0000000000420000-memory.dmp

          Filesize

          128KB

        • memory/1816-31-0x0000000000400000-0x0000000000420000-memory.dmp

          Filesize

          128KB

        • memory/1816-43-0x0000000000400000-0x0000000000420000-memory.dmp

          Filesize

          128KB

        • memory/1816-39-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

          Filesize

          4KB

        • memory/1816-39-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

          Filesize

          4KB

        • memory/1816-33-0x0000000000400000-0x0000000000420000-memory.dmp

          Filesize

          128KB

        • memory/1816-43-0x0000000000400000-0x0000000000420000-memory.dmp

          Filesize

          128KB

        • memory/2064-60-0x00000000013D0000-0x000000000142E000-memory.dmp

          Filesize

          376KB

        • memory/2064-60-0x00000000013D0000-0x000000000142E000-memory.dmp

          Filesize

          376KB

        • memory/2780-49-0x00000000003B0000-0x000000000040E000-memory.dmp

          Filesize

          376KB

        • memory/2780-49-0x00000000003B0000-0x000000000040E000-memory.dmp

          Filesize

          376KB

        • memory/2880-30-0x0000000000590000-0x0000000000591000-memory.dmp

          Filesize

          4KB

        • memory/2880-30-0x0000000000590000-0x0000000000591000-memory.dmp

          Filesize

          4KB