Analysis

  • max time kernel
    4s
  • max time network
    94s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-09-2024 20:13

General

  • Target

    b4c9d317ae919f607b76c58bf2198180N.exe

  • Size

    2.0MB

  • MD5

    b4c9d317ae919f607b76c58bf2198180

  • SHA1

    05a1ea58385035598e78d51d2943c2d30239a3fb

  • SHA256

    4f11284336c65064a76c810d1a8e21fae07a5e785a99a8c3b7f8fdc2a1309ed5

  • SHA512

    d422feb4af476b3eb084d8d8af6e7924d580994a01a86757fc077d81a037f0fdefa556f3ad9bbc4defdb3ff3b499eb031b7a1b834bdbe7e115a936f0e0cb8685

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKYV:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9Y7

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 3 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 3 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.

  • AutoIT Executable 1 IoCs

    AutoIT scripts compiled to PE executables.

  • Suspicious use of SetThreadContext 1 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 8 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 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Runs ping.exe 1 TTPs 2 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 5 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b4c9d317ae919f607b76c58bf2198180N.exe
    "C:\Users\Admin\AppData\Local\Temp\b4c9d317ae919f607b76c58bf2198180N.exe"
    1⤵
    • Checks computer location settings
    • Enumerates connected drives
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:548
    • 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 use of WriteProcessMemory
      PID:2596
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
          PID:4072
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2596 -s 552
          3⤵
          • Program crash
          PID:3260
      • 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:1276
        • 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:1692
        • 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
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:2056
          • 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⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:4964
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\Y1BJo9xaNWGe.bat" "
            4⤵
              PID:4016
              • C:\Windows\SysWOW64\chcp.com
                chcp 65001
                5⤵
                  PID:4204
                • C:\Windows\SysWOW64\PING.EXE
                  ping -n 10 localhost
                  5⤵
                  • System Network Configuration Discovery: Internet Connection Discovery
                  • Runs ping.exe
                  PID:1880
                • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                  "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                  5⤵
                    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
                      6⤵
                      • Scheduled Task/Job: Scheduled Task
                      PID:3944
                    • C:\Windows\SysWOW64\cmd.exe
                      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\kW2CrKt4XuJy.bat" "
                      6⤵
                        PID:1252
                        • C:\Windows\SysWOW64\chcp.com
                          chcp 65001
                          7⤵
                            PID:4476
                          • C:\Windows\SysWOW64\PING.EXE
                            ping -n 10 localhost
                            7⤵
                            • System Network Configuration Discovery: Internet Connection Discovery
                            • Runs ping.exe
                            PID:4464
                          • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                            "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                            7⤵
                              PID:4116
                          • C:\Windows\SysWOW64\WerFault.exe
                            C:\Windows\SysWOW64\WerFault.exe -u -p 320 -s 2208
                            6⤵
                            • Program crash
                            PID:4344
                      • C:\Windows\SysWOW64\WerFault.exe
                        C:\Windows\SysWOW64\WerFault.exe -u -p 2056 -s 1072
                        4⤵
                        • Program crash
                        PID:4116
                  • C:\Users\Admin\AppData\Local\Temp\b4c9d317ae919f607b76c58bf2198180N.exe
                    "C:\Users\Admin\AppData\Local\Temp\b4c9d317ae919f607b76c58bf2198180N.exe"
                    2⤵
                    • System Location Discovery: System Language Discovery
                    PID:2560
                  • 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:4612
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2596 -ip 2596
                  1⤵
                    PID:1408
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 2056 -ip 2056
                    1⤵
                      PID:4384
                    • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                      C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                      1⤵
                        PID:4932
                        • C:\Users\Admin\AppData\Local\Temp\vnc.exe
                          "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
                          2⤵
                            PID:4692
                            • C:\Windows\system32\svchost.exe
                              C:\Windows\system32\svchost.exe -k
                              3⤵
                                PID:4748
                              • C:\Windows\SysWOW64\WerFault.exe
                                C:\Windows\SysWOW64\WerFault.exe -u -p 4692 -s 520
                                3⤵
                                • Program crash
                                PID:2768
                            • C:\Users\Admin\AppData\Local\Temp\windef.exe
                              "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                              2⤵
                                PID:2696
                              • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                                "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
                                2⤵
                                  PID:4432
                                • 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:3508
                              • C:\Windows\SysWOW64\WerFault.exe
                                C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 4692 -ip 4692
                                1⤵
                                  PID:2804
                                • C:\Windows\SysWOW64\WerFault.exe
                                  C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 320 -ip 320
                                  1⤵
                                    PID:4568
                                  • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
                                    "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
                                    1⤵
                                      PID:1992
                                    • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
                                      "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
                                      1⤵
                                        PID:1324

                                      Network

                                      MITRE ATT&CK Enterprise v15

                                      Replay Monitor

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                                      Downloads

                                      • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\windef.exe.log

                                        Filesize

                                        1KB

                                        MD5

                                        10eab9c2684febb5327b6976f2047587

                                        SHA1

                                        a12ed54146a7f5c4c580416aecb899549712449e

                                        SHA256

                                        f49dbd55029bfbc15134f7c6a4f967d6c39142c63f2e8f1f8c78fab108a2c928

                                        SHA512

                                        7e5fd90fffae723bd0c662a90e0730b507805f072771ee673d1d8c262dbf60c8a03ba5fe088f699a97c2e886380de158b2ccd59ee62e3d012dd6dd14ea9d0e50

                                      • C:\Users\Admin\AppData\Local\Temp\Y1BJo9xaNWGe.bat

                                        Filesize

                                        208B

                                        MD5

                                        acf4035913f968d2226756db27ea998b

                                        SHA1

                                        dcc4c0a31dbad191ac4b0358b6a00855ff247a0b

                                        SHA256

                                        08fb8bb4c77fb38d9b53a54ccf943a79094f493035ee8fbd5c1cb9e3ed4ea836

                                        SHA512

                                        94934d2fd1e42d3b9e663639c277eecc44290ed16760d994a268e632f7efd014f23d7462f4c606708cc0b47470a08254974e2a508f5e308b76c8a339b42146ab

                                      • C:\Users\Admin\AppData\Local\Temp\kW2CrKt4XuJy.bat

                                        Filesize

                                        208B

                                        MD5

                                        6619c622684d62bfe96ec0e27441d0ff

                                        SHA1

                                        6e79d0a7c97382ca9e1e9b874dc6da6c14aa26a0

                                        SHA256

                                        db80876dffc99a3e8cb31db454bac32a186f09b72a7fdfa1f721cf909f70f97d

                                        SHA512

                                        d7927aebbe1b9ba3f018b144aa94194ff4c4c40be097de00886f02daa2e36f2152ae72d94879176d77c548431f1bc5998a80e1ef80531a21b5a53b41a4682932

                                      • C:\Users\Admin\AppData\Local\Temp\vnc.exe

                                        Filesize

                                        405KB

                                        MD5

                                        b8ba87ee4c3fc085a2fed0d839aadce1

                                        SHA1

                                        b3a2e3256406330e8b1779199bb2b9865122d766

                                        SHA256

                                        4e8a99cd33c9e5c747a3ce8f1a3e17824846f4a8f7cb0631aebd0815db2ce3a4

                                        SHA512

                                        7a775a12cd5bcd182d64be0d31f800b456ca6d1b531189cea9c72e1940871cfe92ccd005938f67bfa4784ae44c54b3a7ea29a5bb59766e98c78bf53b680f2ab2

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

                                        Filesize

                                        349KB

                                        MD5

                                        b4a202e03d4135484d0e730173abcc72

                                        SHA1

                                        01b30014545ea526c15a60931d676f9392ea0c70

                                        SHA256

                                        7050608d53f80269df951d00883ed79815c060ce7678a76b5c3f6a2a985beea9

                                        SHA512

                                        632a035a3b722ea29b02aad1f0da3df5bdc38abc7e6617223790955c6c0830f1070b528680416d5c63ea5e846074cdad87f06c21c35a77b1ccc4edc089d8b1fb

                                      • C:\Users\Admin\AppData\Roaming\Logs\09-14-2024

                                        Filesize

                                        224B

                                        MD5

                                        ab90076f1eb64dc68fcf5163e9eef58c

                                        SHA1

                                        ca8846f914a178db6e638847cb099a7176740d51

                                        SHA256

                                        6db5b25a7a39c902774c5bd11952444e89caa8b01ac921c5c5199628ea69caac

                                        SHA512

                                        4c53b99e305e956df660833e713203d81dc782e040e90fb3be58cc5a15e7ec70eb9f864c894fc6630079df51449f21b03409aa23e8a27a9498650406ddab4981

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

                                        Filesize

                                        2.0MB

                                        MD5

                                        2b80f6d3a87a3df746fc24c145441256

                                        SHA1

                                        20bc48f8ef7cb9618e6a813c210d67309332eb96

                                        SHA256

                                        d86819c7fafbe864ab03670c6a1977fc48db631def50b3bb5cc4211c347db52a

                                        SHA512

                                        b4ed1568f4d27f784011376e6c4fc5667ddcf936cd050e243671ac02da7ca78fb30aa38adf110b3a4b3bf9283ca17553f80e1c3ed1f46aa580f73d45b5e92eb2

                                      • memory/548-19-0x00000000014E0000-0x00000000014E1000-memory.dmp

                                        Filesize

                                        4KB

                                      • memory/1276-29-0x0000000072F7E000-0x0000000072F7F000-memory.dmp

                                        Filesize

                                        4KB

                                      • memory/1276-35-0x0000000004C20000-0x0000000004C86000-memory.dmp

                                        Filesize

                                        408KB

                                      • memory/1276-36-0x0000000005970000-0x0000000005982000-memory.dmp

                                        Filesize

                                        72KB

                                      • memory/1276-37-0x0000000005EB0000-0x0000000005EEC000-memory.dmp

                                        Filesize

                                        240KB

                                      • memory/1276-34-0x0000000004CD0000-0x0000000004D62000-memory.dmp

                                        Filesize

                                        584KB

                                      • memory/1276-33-0x0000000005280000-0x0000000005824000-memory.dmp

                                        Filesize

                                        5.6MB

                                      • memory/1276-30-0x0000000000320000-0x000000000037E000-memory.dmp

                                        Filesize

                                        376KB

                                      • memory/2056-45-0x0000000006470000-0x000000000647A000-memory.dmp

                                        Filesize

                                        40KB

                                      • memory/2560-28-0x0000000000AB0000-0x0000000000AD0000-memory.dmp

                                        Filesize

                                        128KB

                                      • memory/2560-20-0x0000000000AB0000-0x0000000000AD0000-memory.dmp

                                        Filesize

                                        128KB

                                      • memory/4432-74-0x0000000000400000-0x0000000000420000-memory.dmp

                                        Filesize

                                        128KB

                                      • memory/4432-80-0x0000000000400000-0x0000000000420000-memory.dmp

                                        Filesize

                                        128KB