Analysis

  • max time kernel
    6s
  • max time network
    150s
  • 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 12:47

General

  • Target

    b71b3534b0a78b04ca486d30825aa840d8116fe1.exe

  • Size

    2.0MB

  • MD5

    857c40553dce29df538ccadb3a3fd93a

  • SHA1

    b71b3534b0a78b04ca486d30825aa840d8116fe1

  • SHA256

    9e22b476c2dd9c5f2bc503dcb4fa1efcfe38c6758005297835fa8413c5855ea0

  • SHA512

    dfb4b85890131260b7f60e15a433674e657bffdb8a4da312c790988ab67a549b673da62cf3952c0c99ac3355e43bdc9c6d0986bba05e8cefc0129615385d6f5f

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKYs: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
  • 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\b71b3534b0a78b04ca486d30825aa840d8116fe1.exe
    "C:\Users\Admin\AppData\Local\Temp\b71b3534b0a78b04ca486d30825aa840d8116fe1.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:3116
    • 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:4860
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
          PID:4712
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4860 -s 548
          3⤵
          • Program crash
          PID:3568
      • 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:3772
        • 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:4408
        • 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:3188
          • 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:2084
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\xfLciWOyBCZC.bat" "
            4⤵
              PID:3132
              • C:\Windows\SysWOW64\chcp.com
                chcp 65001
                5⤵
                  PID:1500
                • C:\Windows\SysWOW64\PING.EXE
                  ping -n 10 localhost
                  5⤵
                  • System Network Configuration Discovery: Internet Connection Discovery
                  • Runs ping.exe
                  PID:3992
                • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                  "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                  5⤵
                    PID:4584
                    • 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:2692
                    • C:\Windows\SysWOW64\cmd.exe
                      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\PGgrYXMKhp9d.bat" "
                      6⤵
                        PID:2548
                        • C:\Windows\SysWOW64\chcp.com
                          chcp 65001
                          7⤵
                            PID:4564
                          • C:\Windows\SysWOW64\PING.EXE
                            ping -n 10 localhost
                            7⤵
                            • System Network Configuration Discovery: Internet Connection Discovery
                            • Runs ping.exe
                            PID:1452
                        • C:\Windows\SysWOW64\WerFault.exe
                          C:\Windows\SysWOW64\WerFault.exe -u -p 4584 -s 2224
                          6⤵
                          • Program crash
                          PID:968
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -u -p 3188 -s 1980
                      4⤵
                      • Program crash
                      PID:4772
                • C:\Users\Admin\AppData\Local\Temp\b71b3534b0a78b04ca486d30825aa840d8116fe1.exe
                  "C:\Users\Admin\AppData\Local\Temp\b71b3534b0a78b04ca486d30825aa840d8116fe1.exe"
                  2⤵
                  • System Location Discovery: System Language Discovery
                  PID:4416
                • 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:4256
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4860 -ip 4860
                1⤵
                  PID:1844
                • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                  C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                  1⤵
                    PID:4216
                    • C:\Users\Admin\AppData\Local\Temp\vnc.exe
                      "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
                      2⤵
                        PID:3056
                        • C:\Windows\system32\svchost.exe
                          C:\Windows\system32\svchost.exe -k
                          3⤵
                            PID:3652
                          • C:\Windows\SysWOW64\WerFault.exe
                            C:\Windows\SysWOW64\WerFault.exe -u -p 3056 -s 528
                            3⤵
                            • Program crash
                            PID:4020
                        • C:\Users\Admin\AppData\Local\Temp\windef.exe
                          "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                          2⤵
                            PID:4392
                          • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                            "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
                            2⤵
                              PID:4344
                            • 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:4664
                          • C:\Windows\SysWOW64\WerFault.exe
                            C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 3056 -ip 3056
                            1⤵
                              PID:2996
                            • C:\Windows\SysWOW64\WerFault.exe
                              C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 3188 -ip 3188
                              1⤵
                                PID:904
                              • C:\Windows\SysWOW64\WerFault.exe
                                C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 4584 -ip 4584
                                1⤵
                                  PID:216
                                • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
                                  "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
                                  1⤵
                                    PID:4124
                                  • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
                                    "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
                                    1⤵
                                      PID:2920
                                    • C:\Windows\system32\sihost.exe
                                      sihost.exe
                                      1⤵
                                        PID:4120
                                        • C:\Windows\explorer.exe
                                          explorer.exe /LOADSAVEDWINDOWS
                                          2⤵
                                            PID:2292

                                        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\PGgrYXMKhp9d.bat

                                          Filesize

                                          208B

                                          MD5

                                          1549d8701e46f9cda28682d162b95d43

                                          SHA1

                                          f5bc2333dbe0c4ff220e0bea3436f42bb1a727c0

                                          SHA256

                                          fbb226c6fdc3124110a02f0557aea86473eb1d9c6b6a143fd5bace65769265e6

                                          SHA512

                                          0a1513ec2aec1898725208a1b7dbf5122eda37618de8959007fa6a532939645adc284dbb8b5f9247808254960e51dcb8b5ac3316919bd706d645a9ab3271334e

                                        • 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\xfLciWOyBCZC.bat

                                          Filesize

                                          208B

                                          MD5

                                          719d1dc7f26416cf989adc4a2736eb7a

                                          SHA1

                                          c48bc3003c7cc2c5678d2c2932be7dbbba730e3e

                                          SHA256

                                          978dfc4c485c74e656e2b608e3d56b42aa39caa2596e03ddd95ac1cdcee954b0

                                          SHA512

                                          3f728f184c71c0bf4ec4cc06a53e22ed4513e4631138f206229caa3c2dfdf324f6b4b223adc014d5210dbad7651ca8be22a036ed8700ce61b69d3c22a5354e45

                                        • C:\Users\Admin\AppData\Roaming\Logs\09-17-2024

                                          Filesize

                                          224B

                                          MD5

                                          5f04096fb33aa41b51ffcd946ac66893

                                          SHA1

                                          203094f47dbaef136d882c06fede80d51980186b

                                          SHA256

                                          4e54cd81a9239b2da47d13fb716b10098de02b2745460d0253768e22f0852576

                                          SHA512

                                          6057499dddaf61f68440136c61d10e1c699d3700f3d5852df24532487defff68ddea6dd845d8867ef418598b48f42fa3508d65e14831d1472e94548ac7f6446a

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

                                          Filesize

                                          2.0MB

                                          MD5

                                          209d9637342f715fc719d36d6f6b0ca5

                                          SHA1

                                          285aac0d7c5882de1e54ba41b1463f7b9e217bfe

                                          SHA256

                                          04546d8f09e553bd827adf7ee31e9b2610868e6509a59c44452e34cb2e4a72e9

                                          SHA512

                                          375acb4cb9f445866c11a389743461652f7f8957741146b97f5e9c7b34833e6d35ed0b5bc9e79d14b3e38cc80f04a51c24b68d4b6445c27d4db7f5446814b9ad

                                        • memory/3116-19-0x0000000000E80000-0x0000000000E81000-memory.dmp

                                          Filesize

                                          4KB

                                        • memory/3188-45-0x00000000062D0000-0x00000000062DA000-memory.dmp

                                          Filesize

                                          40KB

                                        • memory/3772-36-0x0000000005000000-0x0000000005012000-memory.dmp

                                          Filesize

                                          72KB

                                        • memory/3772-35-0x0000000004BE0000-0x0000000004C46000-memory.dmp

                                          Filesize

                                          408KB

                                        • memory/3772-37-0x0000000005D00000-0x0000000005D3C000-memory.dmp

                                          Filesize

                                          240KB

                                        • memory/3772-34-0x0000000004B40000-0x0000000004BD2000-memory.dmp

                                          Filesize

                                          584KB

                                        • memory/3772-33-0x0000000005050000-0x00000000055F4000-memory.dmp

                                          Filesize

                                          5.6MB

                                        • memory/3772-30-0x0000000000040000-0x000000000009E000-memory.dmp

                                          Filesize

                                          376KB

                                        • memory/3772-29-0x000000007368E000-0x000000007368F000-memory.dmp

                                          Filesize

                                          4KB

                                        • memory/4344-67-0x00000000004D0000-0x00000000004F0000-memory.dmp

                                          Filesize

                                          128KB

                                        • memory/4344-73-0x00000000004D0000-0x00000000004F0000-memory.dmp

                                          Filesize

                                          128KB

                                        • memory/4416-28-0x0000000000F80000-0x0000000000FA0000-memory.dmp

                                          Filesize

                                          128KB

                                        • memory/4416-20-0x0000000000F80000-0x0000000000FA0000-memory.dmp

                                          Filesize

                                          128KB