Analysis

  • max time kernel
    4s
  • max time network
    109s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18-07-2024 23:58

General

  • Target

    27f9544f59c8f89ccf5f34f77148a0b0N.exe

  • Size

    2.0MB

  • MD5

    27f9544f59c8f89ccf5f34f77148a0b0

  • SHA1

    c9121d5ca289a137d6db42b4dab36fcdbbad278d

  • SHA256

    6f5c970c1ad7480aa4fd3373b44801e78fd7577dbfd9e001339c2f7b3bf53352

  • SHA512

    2b2a1efa7cddf52d7c19ad040c88f9daeb5a907a223e3b43d7a82505e848f5ea54cdae0127f4cde91533604e0b8ad13602c2034d8822b083d3da52a5d459f349

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKYJ: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

    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 5 IoCs
  • 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\27f9544f59c8f89ccf5f34f77148a0b0N.exe
    "C:\Users\Admin\AppData\Local\Temp\27f9544f59c8f89ccf5f34f77148a0b0N.exe"
    1⤵
    • Checks computer location settings
    • Enumerates connected drives
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3240
    • 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:1864
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
          PID:640
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1864 -s 548
          3⤵
          • Program crash
          PID:4280
      • 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:1212
        • 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:2788
        • 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:3068
          • 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:3492
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\JrkyglNaOsQU.bat" "
            4⤵
              PID:2420
              • C:\Windows\SysWOW64\chcp.com
                chcp 65001
                5⤵
                  PID:4280
                • C:\Windows\SysWOW64\PING.EXE
                  ping -n 10 localhost
                  5⤵
                  • Runs ping.exe
                  PID:4508
                • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                  "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                  5⤵
                    PID:2468
                    • 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:3672
                    • C:\Windows\SysWOW64\cmd.exe
                      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\xZkpWsFUkvq7.bat" "
                      6⤵
                        PID:3972
                        • C:\Windows\SysWOW64\chcp.com
                          chcp 65001
                          7⤵
                            PID:2276
                          • C:\Windows\SysWOW64\PING.EXE
                            ping -n 10 localhost
                            7⤵
                            • Runs ping.exe
                            PID:5016
                          • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                            "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                            7⤵
                              PID:2280
                              • C:\Windows\SysWOW64\WerFault.exe
                                C:\Windows\SysWOW64\WerFault.exe -u -p 2280 -s 996
                                8⤵
                                • Program crash
                                PID:2624
                          • C:\Windows\SysWOW64\WerFault.exe
                            C:\Windows\SysWOW64\WerFault.exe -u -p 2468 -s 2240
                            6⤵
                            • Program crash
                            PID:2632
                      • C:\Windows\SysWOW64\WerFault.exe
                        C:\Windows\SysWOW64\WerFault.exe -u -p 3068 -s 2264
                        4⤵
                        • Program crash
                        PID:4980
                  • C:\Users\Admin\AppData\Local\Temp\27f9544f59c8f89ccf5f34f77148a0b0N.exe
                    "C:\Users\Admin\AppData\Local\Temp\27f9544f59c8f89ccf5f34f77148a0b0N.exe"
                    2⤵
                      PID:3400
                    • 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:4764
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1864 -ip 1864
                    1⤵
                      PID:2124
                    • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                      C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                      1⤵
                        PID:3500
                        • C:\Users\Admin\AppData\Local\Temp\vnc.exe
                          "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
                          2⤵
                            PID:4424
                            • C:\Windows\system32\svchost.exe
                              C:\Windows\system32\svchost.exe -k
                              3⤵
                                PID:3784
                              • C:\Windows\SysWOW64\WerFault.exe
                                C:\Windows\SysWOW64\WerFault.exe -u -p 4424 -s 520
                                3⤵
                                • Program crash
                                PID:4340
                            • C:\Users\Admin\AppData\Local\Temp\windef.exe
                              "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                              2⤵
                                PID:1508
                              • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                                "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
                                2⤵
                                  PID:2648
                                • 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:372
                              • C:\Windows\SysWOW64\WerFault.exe
                                C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4424 -ip 4424
                                1⤵
                                  PID:3632
                                • C:\Windows\SysWOW64\WerFault.exe
                                  C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 3068 -ip 3068
                                  1⤵
                                    PID:3828
                                  • C:\Windows\SysWOW64\WerFault.exe
                                    C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 2468 -ip 2468
                                    1⤵
                                      PID:2292
                                    • C:\Windows\SysWOW64\WerFault.exe
                                      C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2280 -ip 2280
                                      1⤵
                                        PID:4480
                                      • C:\Windows\system32\dwm.exe
                                        "dwm.exe"
                                        1⤵
                                          PID:536
                                        • C:\Windows\system32\dwm.exe
                                          "dwm.exe"
                                          1⤵
                                            PID:2796
                                          • C:\Windows\system32\dwm.exe
                                            "dwm.exe"
                                            1⤵
                                              PID:5076
                                            • C:\Windows\system32\dwm.exe
                                              "dwm.exe"
                                              1⤵
                                                PID:1556
                                              • C:\Windows\system32\dwm.exe
                                                "dwm.exe"
                                                1⤵
                                                  PID:3628
                                                • C:\Windows\system32\dwm.exe
                                                  "dwm.exe"
                                                  1⤵
                                                    PID:2292
                                                  • C:\Windows\system32\dwm.exe
                                                    "dwm.exe"
                                                    1⤵
                                                      PID:1860
                                                    • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
                                                      "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
                                                      1⤵
                                                        PID:4940
                                                      • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
                                                        "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
                                                        1⤵
                                                          PID:780

                                                        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\JrkyglNaOsQU.bat

                                                          Filesize

                                                          208B

                                                          MD5

                                                          644909da46c987d229408efa22a19b17

                                                          SHA1

                                                          db868a2de865a3d7788a617f127fe265b0760e22

                                                          SHA256

                                                          06b961ec3878b144140bdb7c3ca28d018292db149c9ab642dfa111c35d7b0764

                                                          SHA512

                                                          4591ba704d23f615486f0acd7cdbad275153b4d5bfd849ea5c3d40714398c3079169bc01249c4cb75aa340299296949a8a0c8bc2ec4a605467fe94abcbf7e05e

                                                        • 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\Local\Temp\xZkpWsFUkvq7.bat

                                                          Filesize

                                                          208B

                                                          MD5

                                                          db1030926e1f4bc794b28b862b3d2585

                                                          SHA1

                                                          a7f583114d8c8d955c667e2db7e2d3475ec59e30

                                                          SHA256

                                                          cf0dfe8a6149d7246d81717afbd2cbc7fa861a34064044e09b885b450cf641b2

                                                          SHA512

                                                          c81bb1435a07ecd99727e935dfe35f80530b42f0d3c19fca89dae8c6067d18ec80b077f9142d828cf2a5aade4e6aa654823f61151038485cd778bec28f7f8bc8

                                                        • C:\Users\Admin\AppData\Roaming\Logs\07-18-2024

                                                          Filesize

                                                          224B

                                                          MD5

                                                          847e989db64a2060c248d3faea214dcc

                                                          SHA1

                                                          726af1e6b891d69658da1b8451c7d9e25b28565a

                                                          SHA256

                                                          db75ed9f7b5ecbadabf9bd40daac6b824998813df0fc2b36138867658a53f5ce

                                                          SHA512

                                                          a281aca51148082271e067c975fdfa1acc97ab2939e5548445d84d0608b13e34332b3a03cdc2e01d92e5b2cb0aa87df0d6d201b6b58ecfd6b72ec181298585df

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

                                                          Filesize

                                                          2.0MB

                                                          MD5

                                                          f5924d460e72ab01f4fc7c77aa857c3b

                                                          SHA1

                                                          724d504040136db9806fd1834609c1f69a24c92d

                                                          SHA256

                                                          b247f8096f115047a9ad8bd12590934a3cad0a85088bc09ba3effcee8959749b

                                                          SHA512

                                                          dd00c4909fc4103691206d31f07f4e69f08090e867a273bee487e5f71f752a2fa329c6f698bfce8c68599f9795671271d7ccb378d885aa46e715095ecb4b2b67

                                                        • memory/1212-29-0x0000000072ACE000-0x0000000072ACF000-memory.dmp

                                                          Filesize

                                                          4KB

                                                        • memory/1212-33-0x0000000005E50000-0x00000000063F4000-memory.dmp

                                                          Filesize

                                                          5.6MB

                                                        • memory/1212-35-0x00000000059B0000-0x0000000005A16000-memory.dmp

                                                          Filesize

                                                          408KB

                                                        • memory/1212-36-0x0000000005DD0000-0x0000000005DE2000-memory.dmp

                                                          Filesize

                                                          72KB

                                                        • memory/1212-37-0x0000000006AC0000-0x0000000006AFC000-memory.dmp

                                                          Filesize

                                                          240KB

                                                        • memory/1212-32-0x0000000000F50000-0x0000000000FAE000-memory.dmp

                                                          Filesize

                                                          376KB

                                                        • memory/1212-34-0x00000000058A0000-0x0000000005932000-memory.dmp

                                                          Filesize

                                                          584KB

                                                        • memory/2648-68-0x0000000000400000-0x0000000000420000-memory.dmp

                                                          Filesize

                                                          128KB

                                                        • memory/2648-74-0x0000000000400000-0x0000000000420000-memory.dmp

                                                          Filesize

                                                          128KB

                                                        • memory/3068-45-0x00000000069F0000-0x00000000069FA000-memory.dmp

                                                          Filesize

                                                          40KB

                                                        • memory/3240-46-0x0000000003D10000-0x0000000003D11000-memory.dmp

                                                          Filesize

                                                          4KB

                                                        • memory/3240-28-0x0000000003D10000-0x0000000003D11000-memory.dmp

                                                          Filesize

                                                          4KB

                                                        • memory/3400-19-0x0000000000C90000-0x0000000000CB0000-memory.dmp

                                                          Filesize

                                                          128KB

                                                        • memory/3400-27-0x0000000000C90000-0x0000000000CB0000-memory.dmp

                                                          Filesize

                                                          128KB