Analysis

  • max time kernel
    3s
  • max time network
    108s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    08-09-2024 12:45

General

  • Target

    c303ca26151ab5ef528990783b016cc0N.exe

  • Size

    2.0MB

  • MD5

    c303ca26151ab5ef528990783b016cc0

  • SHA1

    03b29b6736727a6ceac2d5315ac2dd248eda0614

  • SHA256

    ac8b9af12fb069ea4c7ec526f3f978998768a25d73a536c887cdc56778214d6a

  • SHA512

    c555ae6a18300e05909a8c66fe169d1c7aede9a0616f6af7601140c1b5c7ce9b5c428453208cbee2a1addd66119d8a560f3db618e6df0a768af28ad4a4cc6d69

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKYq:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9Ys

Malware Config

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

Extracted

Family

azorult

C2

http://0x21.in:8000/_az/

Signatures

  • Azorult

    An information stealer that was first discovered in 2016, targeting browsing history and passwords.

  • Quasar RAT 3 IoCs

    Quasar is an open source Remote Access Tool.

  • Quasar payload 5 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 13 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 2 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 2 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 4 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 39 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c303ca26151ab5ef528990783b016cc0N.exe
    "C:\Users\Admin\AppData\Local\Temp\c303ca26151ab5ef528990783b016cc0N.exe"
    1⤵
    • Quasar RAT
    • Loads dropped DLL
    • Enumerates connected drives
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2192
    • 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:2792
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
          PID:2712
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2792 -s 160
          3⤵
          • Loads dropped DLL
          • Program crash
          PID:3020
      • C:\Users\Admin\AppData\Local\Temp\windef.exe
        "C:\Users\Admin\AppData\Local\Temp\windef.exe"
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2692
        • 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:1732
        • 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 WriteProcessMemory
          PID:2888
          • 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:1452
          • C:\Windows\SysWOW64\cmd.exe
            cmd /c ""C:\Users\Admin\AppData\Local\Temp\vCHAbKoX07hJ.bat" "
            4⤵
              PID:376
              • C:\Windows\SysWOW64\chcp.com
                chcp 65001
                5⤵
                  PID:2532
                • C:\Windows\SysWOW64\PING.EXE
                  ping -n 10 localhost
                  5⤵
                  • System Network Configuration Discovery: Internet Connection Discovery
                  • Runs ping.exe
                  PID:2292
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 2888 -s 1520
                4⤵
                • Program crash
                PID:1448
          • C:\Users\Admin\AppData\Local\Temp\c303ca26151ab5ef528990783b016cc0N.exe
            "C:\Users\Admin\AppData\Local\Temp\c303ca26151ab5ef528990783b016cc0N.exe"
            2⤵
            • System Location Discovery: System Language Discovery
            PID:2896
          • 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:1908
        • C:\Windows\system32\taskeng.exe
          taskeng.exe {683226F1-9363-456F-9BA4-DF38431E920A} S-1-5-21-3063565911-2056067323-3330884624-1000:KHBTHJFA\Admin:Interactive:[1]
          1⤵
            PID:1576
            • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
              C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
              2⤵
                PID:2064
                • C:\Users\Admin\AppData\Local\Temp\vnc.exe
                  "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
                  3⤵
                    PID:1696
                    • C:\Windows\system32\svchost.exe
                      C:\Windows\system32\svchost.exe -k
                      4⤵
                        PID:2280
                    • C:\Users\Admin\AppData\Local\Temp\windef.exe
                      "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                      3⤵
                        PID:2144
                      • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                        "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
                        3⤵
                          PID:2136
                        • 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
                          3⤵
                          • Scheduled Task/Job: Scheduled Task
                          PID:2420

                    Network

                    MITRE ATT&CK Enterprise v15

                    Replay Monitor

                    Loading Replay Monitor...

                    Downloads

                    • C:\Users\Admin\AppData\Local\Temp\vCHAbKoX07hJ.bat

                      Filesize

                      208B

                      MD5

                      0072a41ab9aefa6621d8e156af57c669

                      SHA1

                      2a1b5d44ec892e70c06c4c77973031081ce26064

                      SHA256

                      ee63cfbcabb5752b7c33023f69f606ae150eb561d6a83ef41d46ac51bfed4d76

                      SHA512

                      c7227f36dfdfc524b1aef3101af94bb28b57f98eef93decab0ae8dd070fdbe1f2e9174f1b50ad71dfbab11229fb1bdb866fc60c4d4a9fd1b8e115f0575564926

                    • C:\Users\Admin\AppData\Local\Temp\vnc.exe

                      Filesize

                      405KB

                      MD5

                      b8ba87ee4c3fc085a2fed0d839aadce1

                      SHA1

                      b3a2e3256406330e8b1779199bb2b9865122d766

                      SHA256

                      4e8a99cd33c9e5c747a3ce8f1a3e17824846f4a8f7cb0631aebd0815db2ce3a4

                      SHA512

                      7a775a12cd5bcd182d64be0d31f800b456ca6d1b531189cea9c72e1940871cfe92ccd005938f67bfa4784ae44c54b3a7ea29a5bb59766e98c78bf53b680f2ab2

                    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\YFUI26E1.txt

                      Filesize

                      207B

                      MD5

                      2cac548c558116b24f62b9225cfe5dc3

                      SHA1

                      572fbb064d55edce7e1a1622a7e064515efe6834

                      SHA256

                      e9dab22c5bc7cee220280377c777240bca7c82fd8a940aa508465d745cecd4b7

                      SHA512

                      12d4dec16417eda5e90c0060bc34da706fc8e65a37c8fd45d878c0c4c45103b46f0978de33f7002f9d9f4ef87c0fc1841dbde77b5a6c4d1f64f2cfbf68dd2da8

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

                      Filesize

                      2.0MB

                      MD5

                      a6e6b08419df9a7cc103cfdfb20df989

                      SHA1

                      8d7836286b5f37c149c02e0ec6a5e054fc361bfd

                      SHA256

                      8c8f2c363c29222a014ea945d1857262b9a68243f68f344739a4284067ec451f

                      SHA512

                      cc3729594bd02766a63e9619b16a00f90536ecaeaa5dfce37264462e895fc3b9b4e1e60a6a7f0e9a6d38e2bd832b7adcfce428b8aeb1581fdadff4b4b5e301fa

                    • \Users\Admin\AppData\Local\Temp\windef.exe

                      Filesize

                      349KB

                      MD5

                      b4a202e03d4135484d0e730173abcc72

                      SHA1

                      01b30014545ea526c15a60931d676f9392ea0c70

                      SHA256

                      7050608d53f80269df951d00883ed79815c060ce7678a76b5c3f6a2a985beea9

                      SHA512

                      632a035a3b722ea29b02aad1f0da3df5bdc38abc7e6617223790955c6c0830f1070b528680416d5c63ea5e846074cdad87f06c21c35a77b1ccc4edc089d8b1fb

                    • memory/2136-89-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

                      Filesize

                      4KB

                    • memory/2136-93-0x00000000000C0000-0x00000000000E0000-memory.dmp

                      Filesize

                      128KB

                    • memory/2136-86-0x00000000000C0000-0x00000000000E0000-memory.dmp

                      Filesize

                      128KB

                    • memory/2144-95-0x0000000001000000-0x000000000105E000-memory.dmp

                      Filesize

                      376KB

                    • memory/2192-28-0x0000000000860000-0x0000000000861000-memory.dmp

                      Filesize

                      4KB

                    • memory/2280-96-0x0000000000020000-0x0000000000021000-memory.dmp

                      Filesize

                      4KB

                    • memory/2280-98-0x000007FFFFFDA000-0x000007FFFFFDB000-memory.dmp

                      Filesize

                      4KB

                    • memory/2280-99-0x00000000003C0000-0x000000000045C000-memory.dmp

                      Filesize

                      624KB

                    • memory/2280-103-0x00000000003C0000-0x000000000045C000-memory.dmp

                      Filesize

                      624KB

                    • memory/2692-46-0x00000000012F0000-0x000000000134E000-memory.dmp

                      Filesize

                      376KB

                    • memory/2888-60-0x00000000000B0000-0x000000000010E000-memory.dmp

                      Filesize

                      376KB

                    • memory/2896-31-0x0000000000080000-0x00000000000A0000-memory.dmp

                      Filesize

                      128KB

                    • memory/2896-33-0x0000000000080000-0x00000000000A0000-memory.dmp

                      Filesize

                      128KB

                    • memory/2896-39-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

                      Filesize

                      4KB

                    • memory/2896-43-0x0000000000080000-0x00000000000A0000-memory.dmp

                      Filesize

                      128KB