Analysis

  • max time kernel
    5s
  • max time network
    110s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-08-2024 08:33

General

  • Target

    31d0f82cef1c3806244eec05c40365b0N.exe

  • Size

    2.0MB

  • MD5

    31d0f82cef1c3806244eec05c40365b0

  • SHA1

    6d1ba353c9b841b990338b92e9f59a7e4c371a94

  • SHA256

    25bacd110609dfb5188d8b74b175ba988c80e05a00bd78468a4f936529445e42

  • SHA512

    b6979dd9aa8bfac5ee07660a2d75bd53eb7a626448730ece409179bedb62c196af107cd7b6fd3ae65a2979568827ed45ea2c2c2297eed2326ffb5cb9111e870e

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKYV:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9Y7

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\31d0f82cef1c3806244eec05c40365b0N.exe
    "C:\Users\Admin\AppData\Local\Temp\31d0f82cef1c3806244eec05c40365b0N.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:4488
    • 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:1088
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
          PID:1724
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1088 -s 552
          3⤵
          • Program crash
          PID:4232
      • 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:3092
        • 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:2896
        • 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:4592
          • 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:4068
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\fm8TaKG0B17C.bat" "
            4⤵
              PID:4304
              • C:\Windows\SysWOW64\chcp.com
                chcp 65001
                5⤵
                  PID:744
                • C:\Windows\SysWOW64\PING.EXE
                  ping -n 10 localhost
                  5⤵
                  • System Network Configuration Discovery: Internet Connection Discovery
                  • Runs ping.exe
                  PID:2520
                • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                  "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                  5⤵
                    PID:1764
                    • 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:3128
                    • C:\Windows\SysWOW64\cmd.exe
                      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\eDGVjrUNQ4I0.bat" "
                      6⤵
                        PID:464
                        • C:\Windows\SysWOW64\chcp.com
                          chcp 65001
                          7⤵
                            PID:1400
                          • C:\Windows\SysWOW64\PING.EXE
                            ping -n 10 localhost
                            7⤵
                            • System Network Configuration Discovery: Internet Connection Discovery
                            • Runs ping.exe
                            PID:5024
                        • C:\Windows\SysWOW64\WerFault.exe
                          C:\Windows\SysWOW64\WerFault.exe -u -p 1764 -s 2196
                          6⤵
                          • Program crash
                          PID:1816
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -u -p 4592 -s 2280
                      4⤵
                      • Program crash
                      PID:3540
                • C:\Users\Admin\AppData\Local\Temp\31d0f82cef1c3806244eec05c40365b0N.exe
                  "C:\Users\Admin\AppData\Local\Temp\31d0f82cef1c3806244eec05c40365b0N.exe"
                  2⤵
                  • System Location Discovery: System Language Discovery
                  PID:876
                • 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:1356
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1088 -ip 1088
                1⤵
                  PID:3116
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4592 -ip 4592
                  1⤵
                    PID:1432
                  • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                    C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                    1⤵
                      PID:2332
                      • C:\Users\Admin\AppData\Local\Temp\vnc.exe
                        "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
                        2⤵
                          PID:4156
                          • C:\Windows\system32\svchost.exe
                            C:\Windows\system32\svchost.exe -k
                            3⤵
                              PID:4980
                            • C:\Windows\SysWOW64\WerFault.exe
                              C:\Windows\SysWOW64\WerFault.exe -u -p 4156 -s 520
                              3⤵
                              • Program crash
                              PID:448
                          • C:\Users\Admin\AppData\Local\Temp\windef.exe
                            "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                            2⤵
                              PID:3044
                            • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                              "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
                              2⤵
                                PID:3492
                              • 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:3536
                            • C:\Windows\SysWOW64\WerFault.exe
                              C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4156 -ip 4156
                              1⤵
                                PID:4888
                              • C:\Windows\SysWOW64\WerFault.exe
                                C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 1764 -ip 1764
                                1⤵
                                  PID:968
                                • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
                                  "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
                                  1⤵
                                    PID:2872
                                  • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
                                    "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
                                    1⤵
                                      PID:1656

                                    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\eDGVjrUNQ4I0.bat

                                      Filesize

                                      208B

                                      MD5

                                      9a1abed233c2e5be02a0d94e0f5ef87c

                                      SHA1

                                      3a896cd90f56d9caeff1c5c35b18b402d27a51a1

                                      SHA256

                                      65466e18ea7373a24b22b3ce0d7ee927c399f4e4d56d32e2345b041f2021f3b6

                                      SHA512

                                      f0d621d7d6900cf2e65a68cf6bd3d5fb20c0e394f7c5eae67efb59215efa98a7f3bd732390e6b4b92ba1b6e11f1bcbe82a11e2476b396449412d358c7a574b68

                                    • C:\Users\Admin\AppData\Local\Temp\fm8TaKG0B17C.bat

                                      Filesize

                                      208B

                                      MD5

                                      2eece9dddb28cf6dbaae7b1d958154df

                                      SHA1

                                      4f1dbe606604e2d9d62bff3f9738df945bbf8cdb

                                      SHA256

                                      413d713a497f4b16b27ec7136be27b3b4c6e0ebbbf470d1babe0ed257f73be25

                                      SHA512

                                      5f960105a96abcfd72831478794a97a43a21dee3b7ae08211007ca309726e47a2edb476178eb35924c8f4bd3dc427f47d26cfa4b22442ad8d4528bc3dff3b56b

                                    • 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\08-13-2024

                                      Filesize

                                      224B

                                      MD5

                                      d8b200d0626258e8dc50c30c88cd3961

                                      SHA1

                                      8827a0baee7cc587c8e7cf1da32ebff92ef4965b

                                      SHA256

                                      6b78e4dccdb157bd744f3c34314e623ce88882a198b621ed8cfc84ba97a61648

                                      SHA512

                                      198e96eb2fcfff4c8d1c8c2ad47166cd91c46496b008c4a69bb0b1f6669a5a092c1146b7486f40f33f40545e22df572c5a697d63b7c45d66a8fcf192451fb18f

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

                                      Filesize

                                      2.0MB

                                      MD5

                                      84f02c6f5d695f768df54ef19c9484ea

                                      SHA1

                                      68262e68ef0aa0770f81d8449e3955db2b2880d1

                                      SHA256

                                      fc3b7381ba057a0252b8804389423852b7953cf5bcfc5dc8269f31ca20d71969

                                      SHA512

                                      f0ee5762e5f2e5c1162185d8e6fbf8706ff6be46b786a8b00d8ae9ebc8c7ec70a86df29213dc09e70e4f590d1132f46cd2badd2adab06ff29e909adb56d9457f

                                    • memory/876-19-0x0000000000400000-0x0000000000420000-memory.dmp

                                      Filesize

                                      128KB

                                    • memory/876-28-0x0000000000400000-0x0000000000420000-memory.dmp

                                      Filesize

                                      128KB

                                    • memory/3092-29-0x00000000733FE000-0x00000000733FF000-memory.dmp

                                      Filesize

                                      4KB

                                    • memory/3092-36-0x0000000006500000-0x0000000006512000-memory.dmp

                                      Filesize

                                      72KB

                                    • memory/3092-37-0x0000000006A40000-0x0000000006A7C000-memory.dmp

                                      Filesize

                                      240KB

                                    • memory/3092-35-0x00000000056E0000-0x0000000005746000-memory.dmp

                                      Filesize

                                      408KB

                                    • memory/3092-34-0x0000000005770000-0x0000000005802000-memory.dmp

                                      Filesize

                                      584KB

                                    • memory/3092-33-0x0000000005D20000-0x00000000062C4000-memory.dmp

                                      Filesize

                                      5.6MB

                                    • memory/3092-32-0x0000000000DD0000-0x0000000000E2E000-memory.dmp

                                      Filesize

                                      376KB

                                    • memory/3492-75-0x00000000000F0000-0x0000000000110000-memory.dmp

                                      Filesize

                                      128KB

                                    • memory/3492-81-0x00000000000F0000-0x0000000000110000-memory.dmp

                                      Filesize

                                      128KB

                                    • memory/4488-46-0x0000000001730000-0x0000000001731000-memory.dmp

                                      Filesize

                                      4KB

                                    • memory/4488-26-0x0000000001730000-0x0000000001731000-memory.dmp

                                      Filesize

                                      4KB

                                    • memory/4592-45-0x0000000006380000-0x000000000638A000-memory.dmp

                                      Filesize

                                      40KB