Analysis

  • max time kernel
    5s
  • max time network
    98s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-08-2024 14:49

General

  • Target

    49f890bb2ff82fdf2c4579e0374625f0N.exe

  • Size

    2.0MB

  • MD5

    49f890bb2ff82fdf2c4579e0374625f0

  • SHA1

    1acec61c22ad5b0a042b417f8c3bc5c15c58bfe3

  • SHA256

    da137b36d74d27ae87d30aa1878f233a147d431481bcf2e45d96729404a7f29c

  • SHA512

    a7f44d48fb0e687a668fde5f3f37d8d88002c3c185e7cdbffeb8d3754ec824e4d6dffe111bb512475769d88b1101cd3ef579166c78c21d87d36fd71007f673d7

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKYB:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9Yj

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\49f890bb2ff82fdf2c4579e0374625f0N.exe
    "C:\Users\Admin\AppData\Local\Temp\49f890bb2ff82fdf2c4579e0374625f0N.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:3316
    • 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:3452
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
          PID:2760
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3452 -s 540
          3⤵
          • Program crash
          PID:2408
      • 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:1900
        • 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:1172
        • 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:2180
          • 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:4772
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\t9PRxWnnKKif.bat" "
            4⤵
              PID:2348
              • C:\Windows\SysWOW64\chcp.com
                chcp 65001
                5⤵
                  PID:3116
                • C:\Windows\SysWOW64\PING.EXE
                  ping -n 10 localhost
                  5⤵
                  • System Network Configuration Discovery: Internet Connection Discovery
                  • Runs ping.exe
                  PID:1196
                • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                  "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                  5⤵
                    PID:3628
                    • 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:3436
                    • C:\Windows\SysWOW64\cmd.exe
                      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\N4Z40Zdm6v4a.bat" "
                      6⤵
                        PID:720
                        • C:\Windows\SysWOW64\chcp.com
                          chcp 65001
                          7⤵
                            PID:3500
                          • C:\Windows\SysWOW64\PING.EXE
                            ping -n 10 localhost
                            7⤵
                            • System Network Configuration Discovery: Internet Connection Discovery
                            • Runs ping.exe
                            PID:776
                        • C:\Windows\SysWOW64\WerFault.exe
                          C:\Windows\SysWOW64\WerFault.exe -u -p 3628 -s 2244
                          6⤵
                          • Program crash
                          PID:4284
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -u -p 2180 -s 2016
                      4⤵
                      • Program crash
                      PID:4316
                • C:\Users\Admin\AppData\Local\Temp\49f890bb2ff82fdf2c4579e0374625f0N.exe
                  "C:\Users\Admin\AppData\Local\Temp\49f890bb2ff82fdf2c4579e0374625f0N.exe"
                  2⤵
                  • System Location Discovery: System Language Discovery
                  PID:1092
                • 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:4616
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3452 -ip 3452
                1⤵
                  PID:2828
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 2180 -ip 2180
                  1⤵
                    PID:4884
                  • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                    C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                    1⤵
                      PID:3476
                      • C:\Users\Admin\AppData\Local\Temp\vnc.exe
                        "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
                        2⤵
                          PID:4220
                          • C:\Windows\system32\svchost.exe
                            C:\Windows\system32\svchost.exe -k
                            3⤵
                              PID:2956
                            • C:\Windows\SysWOW64\WerFault.exe
                              C:\Windows\SysWOW64\WerFault.exe -u -p 4220 -s 520
                              3⤵
                              • Program crash
                              PID:3384
                          • C:\Users\Admin\AppData\Local\Temp\windef.exe
                            "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                            2⤵
                              PID:4488
                            • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                              "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
                              2⤵
                                PID:3220
                              • 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:452
                            • C:\Windows\SysWOW64\WerFault.exe
                              C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4220 -ip 4220
                              1⤵
                                PID:1096
                              • C:\Windows\SysWOW64\WerFault.exe
                                C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3628 -ip 3628
                                1⤵
                                  PID:4600
                                • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
                                  "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
                                  1⤵
                                    PID:2280
                                  • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
                                    "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
                                    1⤵
                                      PID:4956

                                    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\N4Z40Zdm6v4a.bat

                                      Filesize

                                      208B

                                      MD5

                                      29493e1978d67ee8eb640fd857ddbbfe

                                      SHA1

                                      2c1df7f68e6a6d1eeddb050c2ba17306b7a45a00

                                      SHA256

                                      35bbddbaf752af9d4d5ec31e1edff9a4fd66fa2c289c35a314b73802e9a9b65f

                                      SHA512

                                      9c6a8be3b1f8a50582eca0343e4c341e03adfa5a9a6160c8e78e2060ba022c5416200f42303f3e616057f08a666bbbc0e860c3175bfe88f08406d1f9af36951c

                                    • C:\Users\Admin\AppData\Local\Temp\t9PRxWnnKKif.bat

                                      Filesize

                                      208B

                                      MD5

                                      c3b887b81f8d742d80e2fd3001cde6e0

                                      SHA1

                                      76e0598184e2a5224f3a4fd52157b7beb1c66a7e

                                      SHA256

                                      33f461ba7293c854b4e2e2e836aab3e66e94e0f79c5641e80de3e9f11c1ecf4c

                                      SHA512

                                      0abd7875f61b867ac793e6cffe032dbc642894cc02e7ccd4bc8d30010e3f957a65a9618ccc16e92b36fdd342fe28a9628d49ec355f4d48b8d9c984731bf9538f

                                    • 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\08-23-2024

                                      Filesize

                                      224B

                                      MD5

                                      d36d4223e2044fa9bb11235251ec6630

                                      SHA1

                                      b401f8673067169ccf593205a8ce07370c5995dd

                                      SHA256

                                      f895fc7032a0d4e963155137bf0c2a938b89651587813a20018e6d5713d5e245

                                      SHA512

                                      3df8d54bc9b9e3b65204acd79fd728e63593998e988338ac23896eb3e23215cbf90d3ac90ceea328ed1e40652be8e1a9d001b532ffa371bef9193dd199b45ec1

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

                                      Filesize

                                      2.0MB

                                      MD5

                                      10ad42926fd6daab3505d1d32a175c3e

                                      SHA1

                                      eaa50090f654ddb12b3c59870240001ce3e8cefd

                                      SHA256

                                      1340bfa7b9786d93cea6a26dc1a11aad28829d42a0be4fcb5ed91d3876813636

                                      SHA512

                                      240c842bd9e6d218cc3bf477eafce1ffed2a4c9308810195f14f41c1fcc30728c4554e9f460321bf17691c2f9540264d26d3142feb49cc52234df7f597d158dd

                                    • memory/1092-20-0x0000000000370000-0x0000000000390000-memory.dmp

                                      Filesize

                                      128KB

                                    • memory/1092-28-0x0000000000370000-0x0000000000390000-memory.dmp

                                      Filesize

                                      128KB

                                    • memory/1900-29-0x00000000729DE000-0x00000000729DF000-memory.dmp

                                      Filesize

                                      4KB

                                    • memory/1900-36-0x0000000005780000-0x0000000005792000-memory.dmp

                                      Filesize

                                      72KB

                                    • memory/1900-37-0x0000000005CC0000-0x0000000005CFC000-memory.dmp

                                      Filesize

                                      240KB

                                    • memory/1900-35-0x0000000004B80000-0x0000000004BE6000-memory.dmp

                                      Filesize

                                      408KB

                                    • memory/1900-34-0x0000000004AE0000-0x0000000004B72000-memory.dmp

                                      Filesize

                                      584KB

                                    • memory/1900-33-0x0000000004F70000-0x0000000005514000-memory.dmp

                                      Filesize

                                      5.6MB

                                    • memory/1900-32-0x0000000000150000-0x00000000001AE000-memory.dmp

                                      Filesize

                                      376KB

                                    • memory/2180-45-0x0000000006970000-0x000000000697A000-memory.dmp

                                      Filesize

                                      40KB

                                    • memory/3220-74-0x0000000000160000-0x0000000000180000-memory.dmp

                                      Filesize

                                      128KB

                                    • memory/3220-80-0x0000000000160000-0x0000000000180000-memory.dmp

                                      Filesize

                                      128KB

                                    • memory/3316-19-0x00000000047C0000-0x00000000047C1000-memory.dmp

                                      Filesize

                                      4KB

                                    • memory/3316-86-0x00000000755F0000-0x000000007569F000-memory.dmp

                                      Filesize

                                      700KB

                                    • memory/3316-85-0x00000000746B0000-0x0000000074B00000-memory.dmp

                                      Filesize

                                      4.3MB