Analysis

  • max time kernel
    4s
  • max time network
    119s
  • 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 07:56

General

  • Target

    37c3f733908a12c6a4cd347a118c16f0N.exe

  • Size

    2.0MB

  • MD5

    37c3f733908a12c6a4cd347a118c16f0

  • SHA1

    d352a8f2b2017851cc221b2893f90081d4b99037

  • SHA256

    1ba6753874d7255b511eaf537e816cc5e3164a59ffcfc653af438572d2128a93

  • SHA512

    a1b78c03603d29421f013394d4c78a191af4cab1558378b3755864f7141f3bd2deaacb826dffc18645dd648999dbca89a3b996e6f12053b6d834104d54bb26f5

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKYx:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9Y3

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 3 IoCs

    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 2 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 7 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 WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\37c3f733908a12c6a4cd347a118c16f0N.exe
    "C:\Users\Admin\AppData\Local\Temp\37c3f733908a12c6a4cd347a118c16f0N.exe"
    1⤵
    • Quasar RAT
    • 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:3772
    • 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:2636
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
          PID:3620
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2636 -s 544
          3⤵
          • Program crash
          PID:3220
      • 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:4024
        • 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:4184
        • 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
          PID:760
          • 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:3316
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\N0AzwQ7oHeIX.bat" "
            4⤵
              PID:396
              • C:\Windows\SysWOW64\chcp.com
                chcp 65001
                5⤵
                  PID:1360
                • C:\Windows\SysWOW64\PING.EXE
                  ping -n 10 localhost
                  5⤵
                  • System Network Configuration Discovery: Internet Connection Discovery
                  • Runs ping.exe
                  PID:2528
                • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                  "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                  5⤵
                    PID:1276
                    • 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:2540
                    • C:\Windows\SysWOW64\cmd.exe
                      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\UW9uIJ3QqJcd.bat" "
                      6⤵
                        PID:5096
                        • C:\Windows\SysWOW64\chcp.com
                          chcp 65001
                          7⤵
                            PID:1416
                          • C:\Windows\SysWOW64\PING.EXE
                            ping -n 10 localhost
                            7⤵
                            • System Network Configuration Discovery: Internet Connection Discovery
                            • Runs ping.exe
                            PID:2128
                          • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                            "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                            7⤵
                              PID:4020
                          • C:\Windows\SysWOW64\WerFault.exe
                            C:\Windows\SysWOW64\WerFault.exe -u -p 1276 -s 2264
                            6⤵
                            • Program crash
                            PID:836
                      • C:\Windows\SysWOW64\WerFault.exe
                        C:\Windows\SysWOW64\WerFault.exe -u -p 760 -s 2284
                        4⤵
                        • Program crash
                        PID:1448
                  • C:\Users\Admin\AppData\Local\Temp\37c3f733908a12c6a4cd347a118c16f0N.exe
                    "C:\Users\Admin\AppData\Local\Temp\37c3f733908a12c6a4cd347a118c16f0N.exe"
                    2⤵
                    • System Location Discovery: System Language Discovery
                    PID:4776
                  • 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:2336
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2636 -ip 2636
                  1⤵
                    PID:720
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4376,i,3861745594156495651,17595114179815238301,262144 --variations-seed-version --mojo-platform-channel-handle=4928 /prefetch:8
                    1⤵
                      PID:3088
                    • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                      C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                      1⤵
                        PID:2856
                        • C:\Users\Admin\AppData\Local\Temp\vnc.exe
                          "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
                          2⤵
                            PID:1568
                            • C:\Windows\system32\svchost.exe
                              C:\Windows\system32\svchost.exe -k
                              3⤵
                                PID:1248
                              • C:\Windows\SysWOW64\WerFault.exe
                                C:\Windows\SysWOW64\WerFault.exe -u -p 1568 -s 520
                                3⤵
                                • Program crash
                                PID:4712
                            • C:\Users\Admin\AppData\Local\Temp\windef.exe
                              "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                              2⤵
                                PID:3064
                              • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                                "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
                                2⤵
                                  PID:2344
                                • 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:3964
                              • C:\Windows\SysWOW64\WerFault.exe
                                C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 1568 -ip 1568
                                1⤵
                                  PID:3616
                                • C:\Windows\SysWOW64\WerFault.exe
                                  C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 760 -ip 760
                                  1⤵
                                    PID:4276
                                  • C:\Windows\SysWOW64\WerFault.exe
                                    C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 1276 -ip 1276
                                    1⤵
                                      PID:3500

                                    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\N0AzwQ7oHeIX.bat

                                      Filesize

                                      208B

                                      MD5

                                      0c6a4dfa79c8908f374776a64f73562c

                                      SHA1

                                      fe5a23fc7b7bae5416ac3338816ea8b9be45c552

                                      SHA256

                                      5c22be00420f46813bbe0d4e65bbf71a60333f51403446257618d37c9eb33461

                                      SHA512

                                      6e51dc2117d26e9265784a54480de39f4798cd44905feaca8e21a2764341af46a4ea49e00e8d521470fa95a117ea50b6c6656e994a45210d578d8b7fd4d75988

                                    • C:\Users\Admin\AppData\Local\Temp\UW9uIJ3QqJcd.bat

                                      Filesize

                                      208B

                                      MD5

                                      b5aee56b8011599f3d9790ae5da25cba

                                      SHA1

                                      feac1a1d4f66a302bc8cac476f72b1fd58cbaca7

                                      SHA256

                                      04c194d50a258c4563092c3a46f132e5c13d556b3d92934151ee2bc09c9b187c

                                      SHA512

                                      cf25383e90c8b40189bfe201e19f7c1f72aedc43d05013f20f212e723290b70195de131ec0424b6e84597b2b0cf00a329018d59251b96f4f16e5adc3c809524a

                                    • 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

                                      d961d7c4b42b98c2fc9014abf1c8f64f

                                      SHA1

                                      bef0c5a2acf55dfb79f12568fafcfb4e6fa0ec3b

                                      SHA256

                                      95878f541c470b00cc1a37dee4a36d821f705b97de37bc5a39d2c25f5bca2ca8

                                      SHA512

                                      b733fe215b63c36da41e260f7d2e379bb4fbbb215eb65cb75bcf572488bad3727fb186f1199d4827e84e27e444577cbd069201c64762acdd2876e74c973cdbc2

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

                                      Filesize

                                      2.0MB

                                      MD5

                                      f1e41594fa6ca4c9fe7274a4fc0e01d5

                                      SHA1

                                      e374875ea99e76e1e6fd76bf33120cc1077634b2

                                      SHA256

                                      6ef06662b16ed3d1f4623771d4c038c2073ce96b797955b1a6d7f39ede5a9038

                                      SHA512

                                      ddcd77d55c7473c7a3aa1ae4fc614344417656d44c023a9a4d6ff512f0c3975cf1cc3a08c12ae9d93191645cbcedbb672ce1e2b2761f42cd0f8f66013b3ae7d0

                                    • memory/760-44-0x00000000065C0000-0x00000000065CA000-memory.dmp

                                      Filesize

                                      40KB

                                    • memory/2344-72-0x00000000009A0000-0x00000000009C0000-memory.dmp

                                      Filesize

                                      128KB

                                    • memory/2344-66-0x00000000009A0000-0x00000000009C0000-memory.dmp

                                      Filesize

                                      128KB

                                    • memory/3772-19-0x0000000003AF0000-0x0000000003AF1000-memory.dmp

                                      Filesize

                                      4KB

                                    • memory/4024-34-0x0000000004F70000-0x0000000004FD6000-memory.dmp

                                      Filesize

                                      408KB

                                    • memory/4024-36-0x0000000006100000-0x000000000613C000-memory.dmp

                                      Filesize

                                      240KB

                                    • memory/4024-35-0x0000000005BC0000-0x0000000005BD2000-memory.dmp

                                      Filesize

                                      72KB

                                    • memory/4024-33-0x0000000004EC0000-0x0000000004F52000-memory.dmp

                                      Filesize

                                      584KB

                                    • memory/4024-32-0x0000000005390000-0x0000000005934000-memory.dmp

                                      Filesize

                                      5.6MB

                                    • memory/4024-29-0x0000000000590000-0x00000000005EE000-memory.dmp

                                      Filesize

                                      376KB

                                    • memory/4776-28-0x0000000000400000-0x0000000000420000-memory.dmp

                                      Filesize

                                      128KB

                                    • memory/4776-20-0x0000000000400000-0x0000000000420000-memory.dmp

                                      Filesize

                                      128KB