Analysis

  • max time kernel
    5s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-05-2024 01:48

General

  • Target

    a66a1d39e93ecd9d3607502284071e5708c78c1092ded28e4c815538f94bdca6.exe

  • Size

    2.0MB

  • MD5

    4a19e3a1b37267e44d0eb478a766f211

  • SHA1

    28d0bc2dfe3affc380fe0bfdcd668801ddb72719

  • SHA256

    a66a1d39e93ecd9d3607502284071e5708c78c1092ded28e4c815538f94bdca6

  • SHA512

    45881f60fd71a2c40738a56c3b9815319234f72cde21e0bdf24b34b669d02e3604bf373ac94a81a3bf270142240c89a86828454813bcb93e8c16759d9f09edca

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKYq:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9Yg

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
  • Detects Windows executables referencing non-Windows User-Agents 3 IoCs
  • Detects executables containing common artifacts observed in infostealers 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
  • Creates scheduled task(s) 1 TTPs 6 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Runs ping.exe 1 TTPs 2 IoCs
  • 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\a66a1d39e93ecd9d3607502284071e5708c78c1092ded28e4c815538f94bdca6.exe
    "C:\Users\Admin\AppData\Local\Temp\a66a1d39e93ecd9d3607502284071e5708c78c1092ded28e4c815538f94bdca6.exe"
    1⤵
    • Checks computer location settings
    • Enumerates connected drives
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2132
    • C:\Users\Admin\AppData\Local\Temp\vnc.exe
      "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:4728
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
          PID:2568
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4728 -s 548
          3⤵
          • Program crash
          PID:396
      • C:\Users\Admin\AppData\Local\Temp\windef.exe
        "C:\Users\Admin\AppData\Local\Temp\windef.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3600
        • 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⤵
          • Creates scheduled task(s)
          PID:3048
        • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
          "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:4488
          • 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⤵
            • Creates scheduled task(s)
            PID:1268
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\5mo6YuOtZOn7.bat" "
            4⤵
              PID:1760
              • C:\Windows\SysWOW64\chcp.com
                chcp 65001
                5⤵
                  PID:3204
                • C:\Windows\SysWOW64\PING.EXE
                  ping -n 10 localhost
                  5⤵
                  • Runs ping.exe
                  PID:2424
                • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                  "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                  5⤵
                    PID:4864
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -u -p 4488 -s 1724
                  4⤵
                  • Program crash
                  PID:372
            • C:\Users\Admin\AppData\Local\Temp\a66a1d39e93ecd9d3607502284071e5708c78c1092ded28e4c815538f94bdca6.exe
              "C:\Users\Admin\AppData\Local\Temp\a66a1d39e93ecd9d3607502284071e5708c78c1092ded28e4c815538f94bdca6.exe"
              2⤵
                PID:4544
              • 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⤵
                • Creates scheduled task(s)
                PID:1348
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4728 -ip 4728
              1⤵
                PID:4276
              • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                1⤵
                  PID:4928
                  • C:\Users\Admin\AppData\Local\Temp\vnc.exe
                    "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
                    2⤵
                      PID:3088
                      • C:\Windows\system32\svchost.exe
                        C:\Windows\system32\svchost.exe -k
                        3⤵
                          PID:772
                        • C:\Windows\SysWOW64\WerFault.exe
                          C:\Windows\SysWOW64\WerFault.exe -u -p 3088 -s 520
                          3⤵
                          • Program crash
                          PID:948
                      • C:\Users\Admin\AppData\Local\Temp\windef.exe
                        "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                        2⤵
                          PID:5084
                          • 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⤵
                            • Creates scheduled task(s)
                            PID:1452
                          • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                            "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                            3⤵
                              PID:680
                              • 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⤵
                                • Creates scheduled task(s)
                                PID:3544
                              • C:\Windows\SysWOW64\cmd.exe
                                C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\sOmB4OcYfpeQ.bat" "
                                4⤵
                                  PID:3204
                                  • C:\Windows\SysWOW64\chcp.com
                                    chcp 65001
                                    5⤵
                                      PID:4992
                                    • C:\Windows\SysWOW64\PING.EXE
                                      ping -n 10 localhost
                                      5⤵
                                      • Runs ping.exe
                                      PID:2360
                                  • C:\Windows\SysWOW64\WerFault.exe
                                    C:\Windows\SysWOW64\WerFault.exe -u -p 680 -s 2264
                                    4⤵
                                    • Program crash
                                    PID:2296
                              • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                                "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
                                2⤵
                                  PID:508
                                • 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⤵
                                  • Creates scheduled task(s)
                                  PID:3968
                              • C:\Windows\SysWOW64\WerFault.exe
                                C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 4488 -ip 4488
                                1⤵
                                  PID:1740
                                • C:\Windows\SysWOW64\WerFault.exe
                                  C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 3088 -ip 3088
                                  1⤵
                                    PID:2496
                                  • C:\Windows\SysWOW64\WerFault.exe
                                    C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 680 -ip 680
                                    1⤵
                                      PID:2716
                                    • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
                                      "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
                                      1⤵
                                        PID:1440
                                      • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
                                        "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
                                        1⤵
                                          PID:3188

                                        Network

                                        MITRE ATT&CK Matrix ATT&CK v13

                                        Execution

                                        Scheduled Task/Job

                                        1
                                        T1053

                                        Persistence

                                        Scheduled Task/Job

                                        1
                                        T1053

                                        Privilege Escalation

                                        Scheduled Task/Job

                                        1
                                        T1053

                                        Discovery

                                        Query Registry

                                        2
                                        T1012

                                        System Information Discovery

                                        3
                                        T1082

                                        Peripheral Device Discovery

                                        1
                                        T1120

                                        Remote System Discovery

                                        1
                                        T1018

                                        Replay Monitor

                                        Loading Replay Monitor...

                                        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\5mo6YuOtZOn7.bat
                                          Filesize

                                          208B

                                          MD5

                                          b3a528aa660d6421e91638ae0cf38ed9

                                          SHA1

                                          78cace99f08f9c345c64b9d1d6533d69f5a172cc

                                          SHA256

                                          f5efebed4f0b5ed23d16b9a1f6fcc1aedb0444372312ececbabf898106bea69e

                                          SHA512

                                          82b8b24728a735ff73942c08fb441a9cb8de9943885cb61e0f4cbe41460f28a0b0c090f2c6345394bf1ab30f5ab80fbc2eafb811f59f9fb6feab215825c9c7fb

                                        • C:\Users\Admin\AppData\Local\Temp\sOmB4OcYfpeQ.bat
                                          Filesize

                                          208B

                                          MD5

                                          d0b4f5c04efffa40009620901485f12d

                                          SHA1

                                          5f671772717e0570ea6bcfa71ab357f088e6d0fe

                                          SHA256

                                          c5c9a156ca780970837730e07c6125f5a56faf208679ffdd1db08ff2ac17ea47

                                          SHA512

                                          68d6f9913b58624c15e1ccad8f63eefae37c1a1f47c931b098fe1ade240d1a0b3ae3099edaaa730b4ddba5f9743723cdd473efb5cc80cddaf8cfe0c146e08fdc

                                        • 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\05-03-2024
                                          Filesize

                                          224B

                                          MD5

                                          b1f320a9384c63d39f69d959c5df1cb7

                                          SHA1

                                          a936b88d234e6c99fab41392dd8e76b4714850ff

                                          SHA256

                                          b8eb739605f8eed1704b11045a0bbffdda6219ed2439c216b81203313d3c228b

                                          SHA512

                                          e5b64c09fc0664a82b5170611df93998be4f3c7aafd6924516d8515ee01d82e1c8d2115c82aa5d86dcf1b8017bf6baf843c7e97fc3f60cd1462d5a852a85a0da

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

                                          2.0MB

                                          MD5

                                          d3048b335b472475a7983c204d5308a4

                                          SHA1

                                          11bf01d647344f7a18a892f466d80f2ac76d3a9b

                                          SHA256

                                          a7c0bb14d3431b5013fd7909e03b31a02da4045bbd3bab0f4edba80528cbb6ef

                                          SHA512

                                          446115385816314c5a5d98237a7d5c77364645d9c9876d6e05f48026bdd66d276751c8c5d9fd240666a6a357326d2b50099d865f572bc7d27919cd3dd281a3cc

                                        • memory/2132-19-0x00000000048E0000-0x00000000048E1000-memory.dmp
                                          Filesize

                                          4KB

                                        • memory/3600-34-0x0000000004A70000-0x0000000004B02000-memory.dmp
                                          Filesize

                                          584KB

                                        • memory/3600-35-0x0000000004B40000-0x0000000004BA6000-memory.dmp
                                          Filesize

                                          408KB

                                        • memory/3600-36-0x0000000005750000-0x0000000005762000-memory.dmp
                                          Filesize

                                          72KB

                                        • memory/3600-37-0x0000000005C90000-0x0000000005CCC000-memory.dmp
                                          Filesize

                                          240KB

                                        • memory/3600-31-0x0000000004F80000-0x0000000005524000-memory.dmp
                                          Filesize

                                          5.6MB

                                        • memory/3600-30-0x0000000000110000-0x000000000016E000-memory.dmp
                                          Filesize

                                          376KB

                                        • memory/3600-29-0x0000000072B1E000-0x0000000072B1F000-memory.dmp
                                          Filesize

                                          4KB

                                        • memory/4488-45-0x0000000006B20000-0x0000000006B2A000-memory.dmp
                                          Filesize

                                          40KB

                                        • memory/4544-28-0x0000000000400000-0x0000000000420000-memory.dmp
                                          Filesize

                                          128KB

                                        • memory/4544-20-0x0000000000400000-0x0000000000420000-memory.dmp
                                          Filesize

                                          128KB