Analysis

  • max time kernel
    3s
  • max time network
    139s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-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

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

    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 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 1 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.

  • 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 SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 39 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b71b3534b0a78b04ca486d30825aa840d8116fe1.exe
    "C:\Users\Admin\AppData\Local\Temp\b71b3534b0a78b04ca486d30825aa840d8116fe1.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1928
    • 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:1384
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
          PID:2068
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1384 -s 160
          3⤵
          • Loads dropped DLL
          • Program crash
          PID:2900
      • 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:2948
        • 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:680
        • 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:1488
          • 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:2896
      • C:\Users\Admin\AppData\Local\Temp\b71b3534b0a78b04ca486d30825aa840d8116fe1.exe
        "C:\Users\Admin\AppData\Local\Temp\b71b3534b0a78b04ca486d30825aa840d8116fe1.exe"
        2⤵
        • System Location Discovery: System Language Discovery
        PID:2744
      • 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:2748
    • C:\Windows\system32\taskeng.exe
      taskeng.exe {294AA44D-B6D9-4289-A98D-96EFD7004113} S-1-5-21-4177215427-74451935-3209572229-1000:JSMURNPT\Admin:Interactive:[1]
      1⤵
        PID:1592
        • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
          C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
          2⤵
            PID:1160
            • C:\Users\Admin\AppData\Local\Temp\vnc.exe
              "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
              3⤵
                PID:2228
                • C:\Windows\system32\svchost.exe
                  C:\Windows\system32\svchost.exe -k
                  4⤵
                    PID:2184
                • C:\Users\Admin\AppData\Local\Temp\windef.exe
                  "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                  3⤵
                    PID:1284
                  • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                    "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
                    3⤵
                      PID:2356
                    • 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:956

                Network

                MITRE ATT&CK Enterprise v15

                Replay Monitor

                Loading Replay Monitor...

                Downloads

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

                  Filesize

                  211B

                  MD5

                  d9968bb5ffc81de3e8c2daa6710addc0

                  SHA1

                  1f5ec75f6102bd3695c3752850b896803ca121b0

                  SHA256

                  de45091a925b9edf1887b19738d4646b84faefc5baab8a2ef787189b1b3aa183

                  SHA512

                  023bdcb4a9874311cc031dfc725c44681386ad0bf621425a36a9a80f1205052ca1335c8a6fae565cb13cb62666a8e9e7911e2b13b99593946480dffff8102aaf

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

                  Filesize

                  2.0MB

                  MD5

                  88fd74b9ecd99ed1417040e4d44381b5

                  SHA1

                  376aa7f720acbd638c395d4896886955dc45e28a

                  SHA256

                  3b326cf9c8fc0a45c38f2596f598836bb0a7c215ac7450ae0cb71907e7a66b97

                  SHA512

                  d5e70eff12f6d41d792b3cc82a18bad7f18bd7c848a5b5f4751786b740fdfd9a33e70c589ac7accbea2e1309cd8d14701a9416d80d48172631dfbaec6172995c

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

                  Filesize

                  405KB

                  MD5

                  b8ba87ee4c3fc085a2fed0d839aadce1

                  SHA1

                  b3a2e3256406330e8b1779199bb2b9865122d766

                  SHA256

                  4e8a99cd33c9e5c747a3ce8f1a3e17824846f4a8f7cb0631aebd0815db2ce3a4

                  SHA512

                  7a775a12cd5bcd182d64be0d31f800b456ca6d1b531189cea9c72e1940871cfe92ccd005938f67bfa4784ae44c54b3a7ea29a5bb59766e98c78bf53b680f2ab2

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

                  Filesize

                  349KB

                  MD5

                  b4a202e03d4135484d0e730173abcc72

                  SHA1

                  01b30014545ea526c15a60931d676f9392ea0c70

                  SHA256

                  7050608d53f80269df951d00883ed79815c060ce7678a76b5c3f6a2a985beea9

                  SHA512

                  632a035a3b722ea29b02aad1f0da3df5bdc38abc7e6617223790955c6c0830f1070b528680416d5c63ea5e846074cdad87f06c21c35a77b1ccc4edc089d8b1fb

                • memory/1284-98-0x0000000000160000-0x00000000001BE000-memory.dmp

                  Filesize

                  376KB

                • memory/1488-58-0x0000000001230000-0x000000000128E000-memory.dmp

                  Filesize

                  376KB

                • memory/1928-30-0x0000000000170000-0x0000000000171000-memory.dmp

                  Filesize

                  4KB

                • memory/2184-103-0x0000000000290000-0x000000000032C000-memory.dmp

                  Filesize

                  624KB

                • memory/2184-85-0x0000000000020000-0x0000000000021000-memory.dmp

                  Filesize

                  4KB

                • memory/2184-87-0x000007FFFFFDC000-0x000007FFFFFDD000-memory.dmp

                  Filesize

                  4KB

                • memory/2184-88-0x0000000000290000-0x000000000032C000-memory.dmp

                  Filesize

                  624KB

                • memory/2356-94-0x0000000000080000-0x00000000000A0000-memory.dmp

                  Filesize

                  128KB

                • memory/2356-97-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

                  Filesize

                  4KB

                • memory/2356-102-0x0000000000080000-0x00000000000A0000-memory.dmp

                  Filesize

                  128KB

                • memory/2744-31-0x00000000000C0000-0x00000000000E0000-memory.dmp

                  Filesize

                  128KB

                • memory/2744-33-0x00000000000C0000-0x00000000000E0000-memory.dmp

                  Filesize

                  128KB

                • memory/2744-39-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

                  Filesize

                  4KB

                • memory/2744-43-0x00000000000C0000-0x00000000000E0000-memory.dmp

                  Filesize

                  128KB

                • memory/2948-46-0x0000000000320000-0x000000000037E000-memory.dmp

                  Filesize

                  376KB