Analysis

  • max time kernel
    6s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-09-2024 11:32

General

  • Target

    f4cc835aa7a27996220d99087edb1f80.exe

  • Size

    2.0MB

  • MD5

    f4cc835aa7a27996220d99087edb1f80

  • SHA1

    52c2ca6765887cd0e060d25a6439de8a7ad97504

  • SHA256

    35a5d806136c768e95a39a2a7bfdd0246714600cda889e0351afd819170fc5df

  • SHA512

    d14356c0f4d4caffefe556f86dcfa83dab5c3759c31d468846fd9f77da82cc2101b679b4c3f29f18d01b0f9e592ef2780f878d24f7555c03afa4eb583bc41365

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKYN:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9YP

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 4 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 2 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\f4cc835aa7a27996220d99087edb1f80.exe
    "C:\Users\Admin\AppData\Local\Temp\f4cc835aa7a27996220d99087edb1f80.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:4076
    • 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:2984
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
          PID:3504
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2984 -s 548
          3⤵
          • Program crash
          PID:3156
      • 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:4564
        • 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:4044
        • 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:3288
          • 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:4484
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\gTmNKyjtqE95.bat" "
            4⤵
              PID:2404
              • C:\Windows\SysWOW64\chcp.com
                chcp 65001
                5⤵
                  PID:2672
                • C:\Windows\SysWOW64\PING.EXE
                  ping -n 10 localhost
                  5⤵
                  • System Network Configuration Discovery: Internet Connection Discovery
                  • Runs ping.exe
                  PID:3780
                • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                  "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                  5⤵
                    PID:2268
                    • 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:3352
                    • C:\Windows\SysWOW64\cmd.exe
                      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\bM15p70RyPlP.bat" "
                      6⤵
                        PID:1568
                        • C:\Windows\SysWOW64\chcp.com
                          chcp 65001
                          7⤵
                            PID:4388
                          • C:\Windows\SysWOW64\PING.EXE
                            ping -n 10 localhost
                            7⤵
                            • System Network Configuration Discovery: Internet Connection Discovery
                            • Runs ping.exe
                            PID:2708
                        • C:\Windows\SysWOW64\WerFault.exe
                          C:\Windows\SysWOW64\WerFault.exe -u -p 2268 -s 1968
                          6⤵
                          • Program crash
                          PID:4332
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -u -p 3288 -s 2244
                      4⤵
                      • Program crash
                      PID:4284
                • C:\Users\Admin\AppData\Local\Temp\f4cc835aa7a27996220d99087edb1f80.exe
                  "C:\Users\Admin\AppData\Local\Temp\f4cc835aa7a27996220d99087edb1f80.exe"
                  2⤵
                  • System Location Discovery: System Language Discovery
                  PID:3020
                • 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:3180
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2984 -ip 2984
                1⤵
                  PID:3264
                • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                  C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                  1⤵
                    PID:2880
                    • C:\Users\Admin\AppData\Local\Temp\vnc.exe
                      "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
                      2⤵
                        PID:2884
                        • 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 2884 -s 520
                            3⤵
                            • Program crash
                            PID:2108
                        • C:\Users\Admin\AppData\Local\Temp\windef.exe
                          "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                          2⤵
                            PID:3508
                          • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                            "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
                            2⤵
                              PID:2784
                            • 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:3716
                          • C:\Windows\SysWOW64\WerFault.exe
                            C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 2884 -ip 2884
                            1⤵
                              PID:944
                            • C:\Windows\SysWOW64\WerFault.exe
                              C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3288 -ip 3288
                              1⤵
                                PID:1452
                              • C:\Windows\SysWOW64\WerFault.exe
                                C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 2268 -ip 2268
                                1⤵
                                  PID:4752
                                • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
                                  "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
                                  1⤵
                                    PID:3436
                                  • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
                                    "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
                                    1⤵
                                      PID:384

                                    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\bM15p70RyPlP.bat

                                      Filesize

                                      208B

                                      MD5

                                      80b17ebf04d53b6d82ac5b4a273afd4d

                                      SHA1

                                      e0abf3fbebf367479deae9f46d01569fc792a67b

                                      SHA256

                                      d62a29d170525963f3ac238f6a31eec1e73fa67ffc4ef8f0fcce085b21c994aa

                                      SHA512

                                      8bb7e6026a3caf32eddebac35b0f4b7b893dde23ae6d2079301db978f2bbc0966078f13bfb24799c6bbd3a0c1ba7c2477a697355e9b5712a4899ae87656f3dc1

                                    • C:\Users\Admin\AppData\Local\Temp\gTmNKyjtqE95.bat

                                      Filesize

                                      208B

                                      MD5

                                      69c0c4a9b4686e87c09a665bf0c65cef

                                      SHA1

                                      f129cfff63737a5b6d38aa68b5ab17627de6541f

                                      SHA256

                                      7a8453c69bd099b9b31b7b9da54c1690d9caf6b2711dac18be39e3a1284d340a

                                      SHA512

                                      a583525f5ba0a1cbe696227d8ef83a357ed5851fb6856563efee07e8c235f8ada0ba6b0dbf6264921bdac23ea5186d6d1ab71770e542e0088120963f81e0f55b

                                    • 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\09-17-2024

                                      Filesize

                                      224B

                                      MD5

                                      d9cb6b52e28fddf689e1dfab27adfde1

                                      SHA1

                                      3d58bf333857f2a871d3a4fe5b15dceef7a3137d

                                      SHA256

                                      9de39a427a80e8e182f1e8424825a2b54dac144f9678cc04cac34d8c25ded942

                                      SHA512

                                      4205e6a27f00f3384b888320e2720849236a337c1a83af31cabf90b524155bc2bc6d6a4cb2b9dfaa6ef9bfd0d7a8ef24a0a27ac07c1265c371ad1a55f3deb4d3

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

                                      Filesize

                                      2.0MB

                                      MD5

                                      03c77bf6c8db3a8ab3a645ee9234717a

                                      SHA1

                                      a9df0378692b6418ec151a360d0d0843ecec1a3b

                                      SHA256

                                      7fca7cd07132a7493b0b7c724789a288dbe3abd5b7589e1e9f4ad679c51132f1

                                      SHA512

                                      0c8223d9d0af31fddf1a4a77d6ad06b5a36d139db10714ba5d3b60d15d5575edc4a8cf99aa289914d714c0b921931f38b7674e6b068e3d643f3b0ff819bba5fd

                                    • memory/2880-84-0x0000000000670000-0x000000000087A000-memory.dmp

                                      Filesize

                                      2.0MB

                                    • memory/3020-20-0x0000000000400000-0x0000000000420000-memory.dmp

                                      Filesize

                                      128KB

                                    • memory/3020-28-0x0000000000400000-0x0000000000420000-memory.dmp

                                      Filesize

                                      128KB

                                    • memory/3288-44-0x00000000067F0000-0x00000000067FA000-memory.dmp

                                      Filesize

                                      40KB

                                    • memory/4076-19-0x0000000001730000-0x0000000001731000-memory.dmp

                                      Filesize

                                      4KB

                                    • memory/4564-36-0x0000000005EA0000-0x0000000005EDC000-memory.dmp

                                      Filesize

                                      240KB

                                    • memory/4564-35-0x00000000051B0000-0x00000000051C2000-memory.dmp

                                      Filesize

                                      72KB

                                    • memory/4564-34-0x0000000004D00000-0x0000000004D66000-memory.dmp

                                      Filesize

                                      408KB

                                    • memory/4564-33-0x0000000004C60000-0x0000000004CF2000-memory.dmp

                                      Filesize

                                      584KB

                                    • memory/4564-32-0x0000000005210000-0x00000000057B4000-memory.dmp

                                      Filesize

                                      5.6MB

                                    • memory/4564-31-0x0000000000330000-0x000000000038E000-memory.dmp

                                      Filesize

                                      376KB