Analysis

  • max time kernel
    3s
  • max time network
    75s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    25-12-2023 01:59

General

  • Target

    bc2075cbfaa127a6a3f684bb42bae6f11861258630e37422ebd832d2f2b40413.exe

  • Size

    2.0MB

  • MD5

    c04ab7d36b2e6e8175fe2e0fa8dccf14

  • SHA1

    6516b7e30fc92ced182230288726e517251db430

  • SHA256

    bc2075cbfaa127a6a3f684bb42bae6f11861258630e37422ebd832d2f2b40413

  • SHA512

    c3bc065567b5d302c62c83a67426e465a7000aca9a99d3169c488d54ed9824972e327846109af12314d25ab10180c370468c63b11eb05aac1b3bed7d2110d753

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKYP:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9YB

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 2 IoCs
  • Loads dropped DLL 8 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.

  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • AutoIT Executable 1 IoCs

    AutoIT scripts compiled to PE executables.

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Program crash 1 IoCs
  • Creates scheduled task(s) 1 TTPs 4 IoCs

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

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bc2075cbfaa127a6a3f684bb42bae6f11861258630e37422ebd832d2f2b40413.exe
    "C:\Users\Admin\AppData\Local\Temp\bc2075cbfaa127a6a3f684bb42bae6f11861258630e37422ebd832d2f2b40413.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2096
    • C:\Users\Admin\AppData\Local\Temp\vnc.exe
      "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:1340
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
        • Maps connected drives based on registry
        PID:1608
    • C:\Users\Admin\AppData\Local\Temp\windef.exe
      "C:\Users\Admin\AppData\Local\Temp\windef.exe"
      2⤵
      • Executes dropped EXE
      PID:2216
      • 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⤵
        • Creates scheduled task(s)
        PID:1876
      • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
        "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
        3⤵
          PID:2820
          • 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⤵
            • Creates scheduled task(s)
            PID:1496
          • C:\Windows\SysWOW64\cmd.exe
            cmd /c ""C:\Users\Admin\AppData\Local\Temp\I3lsJUW1nDc4.bat" "
            4⤵
              PID:2064
              • C:\Windows\SysWOW64\chcp.com
                chcp 65001
                5⤵
                  PID:2376
                • C:\Windows\SysWOW64\PING.EXE
                  ping -n 10 localhost
                  5⤵
                  • Runs ping.exe
                  PID:2172
                • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                  "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                  5⤵
                    PID:2220
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -u -p 2820 -s 1524
                  4⤵
                  • Program crash
                  PID:3060
            • C:\Users\Admin\AppData\Local\Temp\bc2075cbfaa127a6a3f684bb42bae6f11861258630e37422ebd832d2f2b40413.exe
              "C:\Users\Admin\AppData\Local\Temp\bc2075cbfaa127a6a3f684bb42bae6f11861258630e37422ebd832d2f2b40413.exe"
              2⤵
                PID:1564
              • 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⤵
                • Creates scheduled task(s)
                PID:2764
            • C:\Windows\system32\taskeng.exe
              taskeng.exe {B0DDE1CC-5C96-4AE7-A6B7-A9D03966F950} S-1-5-21-3427588347-1492276948-3422228430-1000:QVMRJQQO\Admin:Interactive:[1]
              1⤵
                PID:1076
                • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                  C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                  2⤵
                    PID:2304
                    • C:\Users\Admin\AppData\Local\Temp\vnc.exe
                      "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
                      3⤵
                        PID:948
                        • C:\Windows\system32\svchost.exe
                          C:\Windows\system32\svchost.exe -k
                          4⤵
                            PID:2100
                        • C:\Users\Admin\AppData\Local\Temp\windef.exe
                          "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                          3⤵
                            PID:588
                          • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                            "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
                            3⤵
                              PID:404
                            • 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⤵
                              • Creates scheduled task(s)
                              PID:1864

                        Network

                        MITRE ATT&CK Matrix ATT&CK v13

                        Execution

                        Scheduled Task/Job

                        1
                        T1053

                        Persistence

                        Scheduled Task/Job

                        1
                        T1053

                        Privilege Escalation

                        Scheduled Task/Job

                        1
                        T1053

                        Discovery

                        Query Registry

                        2
                        T1012

                        Peripheral Device Discovery

                        2
                        T1120

                        System Information Discovery

                        3
                        T1082

                        Remote System Discovery

                        1
                        T1018

                        Replay Monitor

                        Loading Replay Monitor...

                        Downloads

                        • C:\Users\Admin\AppData\Local\Temp\I3lsJUW1nDc4.bat
                          Filesize

                          208B

                          MD5

                          d96a516e116ca45d09fcd1b4ea466625

                          SHA1

                          0c2f2ffa131b31a32c5c64cc056c85ac8f561a1f

                          SHA256

                          d5116785c085d460f70b10a8efb7f21e57d089c133a5a8d4cd2cd56afdc266f3

                          SHA512

                          0c05acebf6d1582a1ad1d7c0e94ea4f3984fc45757f6a2c15c036c148755666f144f13ed11fc1e6810f3e083f5209e24ec0ef6bbce3c3dc78a38c61c383f32ab

                        • C:\Users\Admin\AppData\Local\Temp\vnc.exe
                          MD5

                          d41d8cd98f00b204e9800998ecf8427e

                          SHA1

                          da39a3ee5e6b4b0d3255bfef95601890afd80709

                          SHA256

                          e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                          SHA512

                          cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

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

                          2.0MB

                          MD5

                          442c62b4036e33d5ea83b42e0d221f33

                          SHA1

                          42e7df5d15c4ca34038d74143e4c73968e34c883

                          SHA256

                          5a55f1dd7ea80673a7618e64026521875bb5d65eb83d9a3acecdbf26f26e4565

                          SHA512

                          bb0f16b87e29790edaaeb795960cace5f48a1d918e17339250b6d6b0dd29d5a0718819d219c6f22c105bb70b65dc4c6cb9ddde724378069cbc9906e8fbbe82b2

                        • \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/404-122-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp
                          Filesize

                          4KB

                        • memory/588-107-0x0000000074070000-0x000000007475E000-memory.dmp
                          Filesize

                          6.9MB

                        • memory/588-110-0x0000000000B00000-0x0000000000B5E000-memory.dmp
                          Filesize

                          376KB

                        • memory/588-129-0x0000000074070000-0x000000007475E000-memory.dmp
                          Filesize

                          6.9MB

                        • memory/588-113-0x00000000048E0000-0x0000000004920000-memory.dmp
                          Filesize

                          256KB

                        • memory/1564-41-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp
                          Filesize

                          4KB

                        • memory/1564-49-0x0000000000080000-0x00000000000A0000-memory.dmp
                          Filesize

                          128KB

                        • memory/1564-30-0x0000000000080000-0x00000000000A0000-memory.dmp
                          Filesize

                          128KB

                        • memory/1564-32-0x0000000000080000-0x00000000000A0000-memory.dmp
                          Filesize

                          128KB

                        • memory/1608-39-0x0000000000020000-0x0000000000021000-memory.dmp
                          Filesize

                          4KB

                        • memory/1608-56-0x0000000000250000-0x00000000002EC000-memory.dmp
                          Filesize

                          624KB

                        • memory/1608-57-0x0000000000020000-0x0000000000021000-memory.dmp
                          Filesize

                          4KB

                        • memory/1608-51-0x0000000000250000-0x00000000002EC000-memory.dmp
                          Filesize

                          624KB

                        • memory/1608-45-0x0000000000250000-0x00000000002EC000-memory.dmp
                          Filesize

                          624KB

                        • memory/1608-42-0x000007FFFFFDA000-0x000007FFFFFDB000-memory.dmp
                          Filesize

                          4KB

                        • memory/2096-36-0x0000000000580000-0x0000000000581000-memory.dmp
                          Filesize

                          4KB

                        • memory/2100-111-0x0000000000440000-0x00000000004DC000-memory.dmp
                          Filesize

                          624KB

                        • memory/2100-108-0x0000000000440000-0x00000000004DC000-memory.dmp
                          Filesize

                          624KB

                        • memory/2100-106-0x000007FFFFFDF000-0x000007FFFFFE0000-memory.dmp
                          Filesize

                          4KB

                        • memory/2100-109-0x0000000000020000-0x0000000000021000-memory.dmp
                          Filesize

                          4KB

                        • memory/2216-54-0x0000000000A00000-0x0000000000A5E000-memory.dmp
                          Filesize

                          376KB

                        • memory/2216-70-0x0000000074070000-0x000000007475E000-memory.dmp
                          Filesize

                          6.9MB

                        • memory/2216-58-0x0000000004800000-0x0000000004840000-memory.dmp
                          Filesize

                          256KB

                        • memory/2216-55-0x0000000074070000-0x000000007475E000-memory.dmp
                          Filesize

                          6.9MB

                        • memory/2220-147-0x0000000074070000-0x000000007475E000-memory.dmp
                          Filesize

                          6.9MB

                        • memory/2220-146-0x0000000000B10000-0x0000000000B50000-memory.dmp
                          Filesize

                          256KB

                        • memory/2220-145-0x0000000074070000-0x000000007475E000-memory.dmp
                          Filesize

                          6.9MB

                        • memory/2820-68-0x0000000004B60000-0x0000000004BA0000-memory.dmp
                          Filesize

                          256KB

                        • memory/2820-128-0x0000000074070000-0x000000007475E000-memory.dmp
                          Filesize

                          6.9MB

                        • memory/2820-66-0x00000000012A0000-0x00000000012FE000-memory.dmp
                          Filesize

                          376KB

                        • memory/2820-67-0x0000000074070000-0x000000007475E000-memory.dmp
                          Filesize

                          6.9MB