Analysis

  • max time kernel
    6s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16-10-2024 08:45

General

  • Target

    a71d11b5a3342630144b38c1e6144f3fa1db2fab560a1a15e63984e93f476d9eN.exe

  • Size

    2.0MB

  • MD5

    386be81df66358401e1f15650f20d290

  • SHA1

    3705ee0aab1ee903e17a2c30e67bd7bcc31ccabe

  • SHA256

    a71d11b5a3342630144b38c1e6144f3fa1db2fab560a1a15e63984e93f476d9e

  • SHA512

    44c3895365db1d8666008c8dca75007e300515a02b4dc8d5115c6e6b145515edd72101155b6f63a767c43404a46c0d714f622faf3ea9b53a3391181085456dfc

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKYP:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9Yt

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 3 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 1 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Runs ping.exe 1 TTPs 1 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\a71d11b5a3342630144b38c1e6144f3fa1db2fab560a1a15e63984e93f476d9eN.exe
    "C:\Users\Admin\AppData\Local\Temp\a71d11b5a3342630144b38c1e6144f3fa1db2fab560a1a15e63984e93f476d9eN.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:1244
    • 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:4488
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
          PID:4516
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4488 -s 548
          3⤵
          • Program crash
          PID:4248
      • 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:4044
        • 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:3196
        • 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:2628
          • 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:4400
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\2dEaPoNqmvIQ.bat" "
            4⤵
              PID:436
              • C:\Windows\SysWOW64\chcp.com
                chcp 65001
                5⤵
                  PID:4384
                • C:\Windows\SysWOW64\PING.EXE
                  ping -n 10 localhost
                  5⤵
                  • System Network Configuration Discovery: Internet Connection Discovery
                  • Runs ping.exe
                  PID:4172
                • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                  "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                  5⤵
                    PID:3780
                    • 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:4436
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -u -p 2628 -s 2232
                  4⤵
                  • Program crash
                  PID:3268
            • C:\Users\Admin\AppData\Local\Temp\a71d11b5a3342630144b38c1e6144f3fa1db2fab560a1a15e63984e93f476d9eN.exe
              "C:\Users\Admin\AppData\Local\Temp\a71d11b5a3342630144b38c1e6144f3fa1db2fab560a1a15e63984e93f476d9eN.exe"
              2⤵
              • System Location Discovery: System Language Discovery
              PID:5060
            • 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:3324
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4488 -ip 4488
            1⤵
              PID:4928
            • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
              C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
              1⤵
                PID:3000
                • C:\Users\Admin\AppData\Local\Temp\vnc.exe
                  "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
                  2⤵
                    PID:4408
                    • C:\Windows\system32\svchost.exe
                      C:\Windows\system32\svchost.exe -k
                      3⤵
                        PID:64
                      • C:\Windows\SysWOW64\WerFault.exe
                        C:\Windows\SysWOW64\WerFault.exe -u -p 4408 -s 520
                        3⤵
                        • Program crash
                        PID:4564
                    • C:\Users\Admin\AppData\Local\Temp\windef.exe
                      "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                      2⤵
                        PID:4228
                      • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                        "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
                        2⤵
                          PID:4588
                        • 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:928
                      • C:\Windows\SysWOW64\WerFault.exe
                        C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 4408 -ip 4408
                        1⤵
                          PID:2664
                        • C:\Windows\SysWOW64\WerFault.exe
                          C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 2628 -ip 2628
                          1⤵
                            PID:1820
                          • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
                            "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
                            1⤵
                              PID:2624

                            Network

                            MITRE ATT&CK Enterprise v15

                            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\2dEaPoNqmvIQ.bat

                              Filesize

                              208B

                              MD5

                              2bd32e753b1b8e1927b995049b4b1358

                              SHA1

                              1f48105d8e275ff7ce025f7dd596de5126e9b89d

                              SHA256

                              7f074fbb4cb89fb849eeddec069a1dd21db1b467eb8d3c826c7f812d4052db02

                              SHA512

                              b268d4fab05b2a58405b7ea6e1b66b1571b764d49363480a17e14fe652ff0189067ece1f1663b6a3fbebbd82ff5024bdbf83b17a6680235e724f6aad91486682

                            • 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\10-16-2024

                              Filesize

                              224B

                              MD5

                              9e2e39335e9bc4de6e27879c68626b13

                              SHA1

                              23f0cd53b6c886921e5fa456b634df8e89ff6f98

                              SHA256

                              fc951fac8a64087f5db7095e1729b232f16169468924829d70b8ae7d62beab16

                              SHA512

                              faffc98966496f1ec31192984a511dc2f73cfcfcacc1959840429fb2fa63dc51cd726a5a454a5160f9d5f380e9ec7710b4f920afd314219b3ea31bea8b725515

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

                              Filesize

                              2.0MB

                              MD5

                              a3d136a893cd9fe12cd09350da37f463

                              SHA1

                              87a6e68bb761ef327bdbdb46a7d713fc4691e6ad

                              SHA256

                              013123c9e040fa5d321243922092dfc505d5748f04ded1d127bacd611ea831cf

                              SHA512

                              d5626b4f947900b0449ad1c4c4b24feb40bf381ddf28dd9c181cd1135e4b1076b85c82f4ef87d416a6c4cb451391061f17b9f8580c7e4c84aac97b9f6f327785

                            • memory/1244-19-0x00000000040F0000-0x00000000040F1000-memory.dmp

                              Filesize

                              4KB

                            • memory/2628-45-0x0000000006B60000-0x0000000006B6A000-memory.dmp

                              Filesize

                              40KB

                            • memory/4044-34-0x0000000004D50000-0x0000000004DE2000-memory.dmp

                              Filesize

                              584KB

                            • memory/4044-35-0x0000000004DF0000-0x0000000004E56000-memory.dmp

                              Filesize

                              408KB

                            • memory/4044-36-0x0000000005A40000-0x0000000005A52000-memory.dmp

                              Filesize

                              72KB

                            • memory/4044-37-0x0000000005F80000-0x0000000005FBC000-memory.dmp

                              Filesize

                              240KB

                            • memory/4044-33-0x00000000051F0000-0x0000000005794000-memory.dmp

                              Filesize

                              5.6MB

                            • memory/4044-30-0x0000000000400000-0x000000000045E000-memory.dmp

                              Filesize

                              376KB

                            • memory/4044-29-0x00000000732FE000-0x00000000732FF000-memory.dmp

                              Filesize

                              4KB

                            • memory/5060-28-0x0000000000400000-0x0000000000420000-memory.dmp

                              Filesize

                              128KB

                            • memory/5060-20-0x0000000000400000-0x0000000000420000-memory.dmp

                              Filesize

                              128KB