Analysis

  • max time kernel
    5s
  • max time network
    99s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-09-2024 03:36

General

  • Target

    c50c0be676a4b7520691ed6ecc6624dc8759aeac90e9aeb9c5ae0fa5088506a7.exe

  • Size

    2.0MB

  • MD5

    5522c9076cce463934c9dd0ab2f74070

  • SHA1

    85d829b1b828c9487ab1a6d226699d1e427e5665

  • SHA256

    c50c0be676a4b7520691ed6ecc6624dc8759aeac90e9aeb9c5ae0fa5088506a7

  • SHA512

    1f90d32666eef0d7392325023be552ff1bc1a4e34da5faaa03cb112c7c452d6bb834a38eb27093ddc17b038ccdd06a02324109237f31428859193f72ef1c0f2b

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKYE:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9Yu

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\c50c0be676a4b7520691ed6ecc6624dc8759aeac90e9aeb9c5ae0fa5088506a7.exe
    "C:\Users\Admin\AppData\Local\Temp\c50c0be676a4b7520691ed6ecc6624dc8759aeac90e9aeb9c5ae0fa5088506a7.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:3952
    • 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:4920
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
          PID:1216
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4920 -s 552
          3⤵
          • Program crash
          PID:1032
      • 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:2152
        • 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:1500
        • 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:3928
          • 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:2420
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\T7HiFLg3l6ak.bat" "
            4⤵
              PID:2260
              • C:\Windows\SysWOW64\chcp.com
                chcp 65001
                5⤵
                  PID:640
                • C:\Windows\SysWOW64\PING.EXE
                  ping -n 10 localhost
                  5⤵
                  • System Network Configuration Discovery: Internet Connection Discovery
                  • Runs ping.exe
                  PID:2052
                • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                  "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                  5⤵
                    PID:4368
                    • 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:2532
                    • C:\Windows\SysWOW64\cmd.exe
                      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\0EZVeIQnUUk0.bat" "
                      6⤵
                        PID:1988
                        • C:\Windows\SysWOW64\chcp.com
                          chcp 65001
                          7⤵
                            PID:2992
                          • C:\Windows\SysWOW64\PING.EXE
                            ping -n 10 localhost
                            7⤵
                            • System Network Configuration Discovery: Internet Connection Discovery
                            • Runs ping.exe
                            PID:1636
                        • C:\Windows\SysWOW64\WerFault.exe
                          C:\Windows\SysWOW64\WerFault.exe -u -p 4368 -s 2252
                          6⤵
                          • Program crash
                          PID:4228
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -u -p 3928 -s 2260
                      4⤵
                      • Program crash
                      PID:840
                • C:\Users\Admin\AppData\Local\Temp\c50c0be676a4b7520691ed6ecc6624dc8759aeac90e9aeb9c5ae0fa5088506a7.exe
                  "C:\Users\Admin\AppData\Local\Temp\c50c0be676a4b7520691ed6ecc6624dc8759aeac90e9aeb9c5ae0fa5088506a7.exe"
                  2⤵
                  • System Location Discovery: System Language Discovery
                  PID:536
                • 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:392
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4920 -ip 4920
                1⤵
                  PID:3660
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3928 -ip 3928
                  1⤵
                    PID:3944
                  • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                    C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                    1⤵
                      PID:4924
                      • C:\Users\Admin\AppData\Local\Temp\vnc.exe
                        "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
                        2⤵
                          PID:5060
                          • C:\Windows\system32\svchost.exe
                            C:\Windows\system32\svchost.exe -k
                            3⤵
                              PID:5112
                            • C:\Windows\SysWOW64\WerFault.exe
                              C:\Windows\SysWOW64\WerFault.exe -u -p 5060 -s 520
                              3⤵
                              • Program crash
                              PID:1032
                          • C:\Users\Admin\AppData\Local\Temp\windef.exe
                            "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                            2⤵
                              PID:2108
                            • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                              "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
                              2⤵
                                PID:1500
                              • 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:2240
                            • C:\Windows\SysWOW64\WerFault.exe
                              C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 5060 -ip 5060
                              1⤵
                                PID:3004
                              • C:\Windows\SysWOW64\WerFault.exe
                                C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 4368 -ip 4368
                                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:4272
                                  • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
                                    "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
                                    1⤵
                                      PID:4404

                                    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\0EZVeIQnUUk0.bat

                                      Filesize

                                      208B

                                      MD5

                                      f1f660af947e7e62d6808e688b2b1070

                                      SHA1

                                      ee9f4ecb7c17fdfb0a3f0efdd8309ef3dedfb9d5

                                      SHA256

                                      12f178d2b3fc1b52696a2162fe23ba42473eeec1f979a1fe5564f479b5d9c4af

                                      SHA512

                                      f1db0f3fabec6a227cbc1d0a0b8bc21b0e96dbee631812557d9a6e1ea477f6904d1505eb7694cc9aa709c3bd60b8287db1db2e47c981a91cf930155132b7b924

                                    • C:\Users\Admin\AppData\Local\Temp\T7HiFLg3l6ak.bat

                                      Filesize

                                      208B

                                      MD5

                                      0089385835060ac88046aee1b3a8f0a0

                                      SHA1

                                      abb401d3ec90c21ff14dbed12177eef5d554d022

                                      SHA256

                                      87006b293b0b1304df9d3863432521eb6964d6052a714e5fa030aadf05c71329

                                      SHA512

                                      c7a576e4abfc2b7710bdaee7369b9eb578acaae49518443198f80854163cae9eef800ed753a8f2d5dbe73f9983caa527b30accc153f5bdc34c86853a4421337d

                                    • 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\09-02-2024

                                      Filesize

                                      224B

                                      MD5

                                      cb009fda402ceca8712203ebc5778009

                                      SHA1

                                      6df4745d0db143c050c20d8251cbebd00d48ca5c

                                      SHA256

                                      dd5340c9b99a26b838a5f31ef877c0ae0167340e53b0c91df77b5b98e42479be

                                      SHA512

                                      e8227ac1be0efaf7dff73f0697f1f8dd1f9b9c228c55b055c27ec0610215ed30f1db7878532553c1b66a949f3b8497e0feb497819309aa3a6782993cb64535e5

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

                                      Filesize

                                      2.0MB

                                      MD5

                                      81dabc9da1646fc9c3e789298c33fed5

                                      SHA1

                                      38e2a71b3fb388955226e212fe324e0d6d9cf297

                                      SHA256

                                      ff72f84c5eeb3dcbef7b25257b9093ca06f348a119a4aa26da75ce1dadf07548

                                      SHA512

                                      283a41604cfd5665741e47c3c1b6b23d9069086c3bbd225a0d2def817bbd626071b21e8688033ecec3e1b5cb9d828b883943c70db5ddc442883dfde257dedda5

                                    • memory/536-29-0x0000000000CC0000-0x0000000000CE0000-memory.dmp

                                      Filesize

                                      128KB

                                    • memory/536-20-0x0000000000CC0000-0x0000000000CE0000-memory.dmp

                                      Filesize

                                      128KB

                                    • memory/1500-74-0x00000000008C0000-0x00000000008E0000-memory.dmp

                                      Filesize

                                      128KB

                                    • memory/1500-80-0x00000000008C0000-0x00000000008E0000-memory.dmp

                                      Filesize

                                      128KB

                                    • memory/2152-34-0x0000000004E30000-0x0000000004EC2000-memory.dmp

                                      Filesize

                                      584KB

                                    • memory/2152-35-0x0000000004D70000-0x0000000004DD6000-memory.dmp

                                      Filesize

                                      408KB

                                    • memory/2152-36-0x0000000005AB0000-0x0000000005AC2000-memory.dmp

                                      Filesize

                                      72KB

                                    • memory/2152-37-0x0000000005FF0000-0x000000000602C000-memory.dmp

                                      Filesize

                                      240KB

                                    • memory/2152-33-0x00000000053E0000-0x0000000005984000-memory.dmp

                                      Filesize

                                      5.6MB

                                    • memory/2152-30-0x0000000000460000-0x00000000004BE000-memory.dmp

                                      Filesize

                                      376KB

                                    • memory/2152-27-0x000000007312E000-0x000000007312F000-memory.dmp

                                      Filesize

                                      4KB

                                    • memory/3928-45-0x0000000006600000-0x000000000660A000-memory.dmp

                                      Filesize

                                      40KB

                                    • memory/3952-19-0x0000000003960000-0x0000000003961000-memory.dmp

                                      Filesize

                                      4KB