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
    13-08-2024 12:43

General

  • Target

    73bd1b1240bfe1e7ed1c961c0a505e70N.exe

  • Size

    2.0MB

  • MD5

    73bd1b1240bfe1e7ed1c961c0a505e70

  • SHA1

    9dd3932ea7bd2922aa7f7215c8e5a3f81ec34ced

  • SHA256

    889d3ef6f4112182c4d4d2c9154fb9a881bd4dacd3ed7857c070ee958a378a80

  • SHA512

    4d28d1d1f570da7d076efc38e289a2df19b3cea31546dee504f303c86b968b01e3a691fb6caff4d93c1ca8232fb26c808430f6a0c779a3acbcfafe5b59daf6ce

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKYu:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9Yo

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 6 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\73bd1b1240bfe1e7ed1c961c0a505e70N.exe
    "C:\Users\Admin\AppData\Local\Temp\73bd1b1240bfe1e7ed1c961c0a505e70N.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:3216
    • 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:2192
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
          PID:4000
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2192 -s 548
          3⤵
          • Program crash
          PID:3636
      • 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:4004
        • 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:64
        • 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:3032
          • 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:4536
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\AMVxkxANTji7.bat" "
            4⤵
              PID:3548
              • C:\Windows\SysWOW64\chcp.com
                chcp 65001
                5⤵
                  PID:4892
                • C:\Windows\SysWOW64\PING.EXE
                  ping -n 10 localhost
                  5⤵
                  • System Network Configuration Discovery: Internet Connection Discovery
                  • Runs ping.exe
                  PID:4460
                • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                  "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                  5⤵
                    PID:3584
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -u -p 3032 -s 2248
                  4⤵
                  • Program crash
                  PID:2200
            • C:\Users\Admin\AppData\Local\Temp\73bd1b1240bfe1e7ed1c961c0a505e70N.exe
              "C:\Users\Admin\AppData\Local\Temp\73bd1b1240bfe1e7ed1c961c0a505e70N.exe"
              2⤵
              • System Location Discovery: System Language Discovery
              PID:3876
            • 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:1244
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 2192 -ip 2192
            1⤵
              PID:2164
            • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
              C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
              1⤵
                PID:3544
                • C:\Users\Admin\AppData\Local\Temp\vnc.exe
                  "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
                  2⤵
                    PID:3704
                    • C:\Windows\system32\svchost.exe
                      C:\Windows\system32\svchost.exe -k
                      3⤵
                        PID:4364
                      • C:\Windows\SysWOW64\WerFault.exe
                        C:\Windows\SysWOW64\WerFault.exe -u -p 3704 -s 520
                        3⤵
                        • Program crash
                        PID:1932
                    • C:\Users\Admin\AppData\Local\Temp\windef.exe
                      "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                      2⤵
                        PID:3648
                        • 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:4852
                        • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                          "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                          3⤵
                            PID:1948
                            • 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:5036
                            • C:\Windows\SysWOW64\cmd.exe
                              C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\U3EOhebkrZlQ.bat" "
                              4⤵
                                PID:1116
                                • C:\Windows\SysWOW64\chcp.com
                                  chcp 65001
                                  5⤵
                                    PID:4336
                                  • C:\Windows\SysWOW64\PING.EXE
                                    ping -n 10 localhost
                                    5⤵
                                    • System Network Configuration Discovery: Internet Connection Discovery
                                    • Runs ping.exe
                                    PID:1100
                                • C:\Windows\SysWOW64\WerFault.exe
                                  C:\Windows\SysWOW64\WerFault.exe -u -p 1948 -s 2256
                                  4⤵
                                  • Program crash
                                  PID:972
                            • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                              "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
                              2⤵
                                PID:228
                              • 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:4308
                            • C:\Windows\SysWOW64\WerFault.exe
                              C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 3704 -ip 3704
                              1⤵
                                PID:4540
                              • C:\Windows\SysWOW64\WerFault.exe
                                C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 3032 -ip 3032
                                1⤵
                                  PID:1324
                                • C:\Windows\SysWOW64\WerFault.exe
                                  C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 1948 -ip 1948
                                  1⤵
                                    PID:628
                                  • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
                                    "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
                                    1⤵
                                      PID:3164
                                    • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
                                      "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
                                      1⤵
                                        PID:2124

                                      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\AMVxkxANTji7.bat

                                        Filesize

                                        208B

                                        MD5

                                        517e9a3d0118de2d6aad2d9b541a1538

                                        SHA1

                                        b36e4b78e606de79611be3a1ecfa69667d2139fc

                                        SHA256

                                        3fffa190c1d453d5b453071519d4c500765ae3d7553f1fb93fc5b69e3c77518f

                                        SHA512

                                        83bc1faf96bd1fa44a8d1ee449a38f115f59737fb3265f1e5c560300d9ff789e5d45d63b7373fa01457143d9a9dad1d936d7676a8bc509967634d4a7a25ef072

                                      • C:\Users\Admin\AppData\Local\Temp\U3EOhebkrZlQ.bat

                                        Filesize

                                        208B

                                        MD5

                                        8afb51839a0225c997ba44d92ee1652a

                                        SHA1

                                        82fc9375e1a4cd25b51d8155e415c0514448be1e

                                        SHA256

                                        bd7c4f4185477eea36de60a61787641fbe75e1c2d9955a8c82837db0c3714c33

                                        SHA512

                                        0491494d53c28bcc15197c8033d771db4282a027973e6f0d7c7d09509c1969d60bf1566cf9bc40a8f9ff8f6ce9c12b16f575badeda73dd0591091f76294ae6e6

                                      • 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\08-13-2024

                                        Filesize

                                        224B

                                        MD5

                                        9105247d7129529967d26ed386063d4c

                                        SHA1

                                        40b8ad3da7e00fe6e565b0a0fc0e4ae6dbe11e73

                                        SHA256

                                        ccb35f5db51e0be461543dce4baffe38c270d18d751e5df65c2ac9f16a41259b

                                        SHA512

                                        de4a146b766fd9c19b6d1504a98d08bab1064e8ae1463fa0ebc2307f33a3338bbf064fe3cfd91339526fba2d8073c9aadb73b2e040a6d0cb9cb149ff255bb280

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

                                        Filesize

                                        2.0MB

                                        MD5

                                        9f352162d048f20fe4401499e7df71d8

                                        SHA1

                                        6142a1d6564810956b468b5fd6d2ef5c3128a856

                                        SHA256

                                        436bbcb94eab8668f3c300336756bf46aa5f9012c67b7a790bc2808754e8343f

                                        SHA512

                                        b71801f7b577098308d943331ee2d8f0ecb9078c0514f43011ed6bd22246edd48dd7f350a4401a453d83e0bcd847b81155e6a60b264aa8c2d6756cc0e817ddf9

                                      • memory/228-73-0x0000000000AB0000-0x0000000000AD0000-memory.dmp

                                        Filesize

                                        128KB

                                      • memory/228-67-0x0000000000AB0000-0x0000000000AD0000-memory.dmp

                                        Filesize

                                        128KB

                                      • memory/3032-45-0x0000000006250000-0x000000000625A000-memory.dmp

                                        Filesize

                                        40KB

                                      • memory/3216-19-0x0000000002290000-0x0000000002291000-memory.dmp

                                        Filesize

                                        4KB

                                      • memory/3876-28-0x0000000000400000-0x0000000000420000-memory.dmp

                                        Filesize

                                        128KB

                                      • memory/3876-20-0x0000000000400000-0x0000000000420000-memory.dmp

                                        Filesize

                                        128KB

                                      • memory/4004-29-0x000000007341E000-0x000000007341F000-memory.dmp

                                        Filesize

                                        4KB

                                      • memory/4004-37-0x0000000006380000-0x00000000063BC000-memory.dmp

                                        Filesize

                                        240KB

                                      • memory/4004-36-0x0000000005E40000-0x0000000005E52000-memory.dmp

                                        Filesize

                                        72KB

                                      • memory/4004-35-0x0000000005040000-0x00000000050A6000-memory.dmp

                                        Filesize

                                        408KB

                                      • memory/4004-34-0x0000000005180000-0x0000000005212000-memory.dmp

                                        Filesize

                                        584KB

                                      • memory/4004-33-0x0000000005730000-0x0000000005CD4000-memory.dmp

                                        Filesize

                                        5.6MB

                                      • memory/4004-32-0x0000000000710000-0x000000000076E000-memory.dmp

                                        Filesize

                                        376KB