Analysis

  • max time kernel
    3s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    21-08-2024 19:37

General

  • Target

    b303cf21786ffb3a53bcabd6e4f0c810N.exe

  • Size

    2.0MB

  • MD5

    b303cf21786ffb3a53bcabd6e4f0c810

  • SHA1

    213fa018f83eb7017cf22da7679df37b055ddf98

  • SHA256

    e0165e0bc92d206d65c35c5f5859dff9d8b40a5feec7500146732be859551665

  • SHA512

    8d1d3b2a7653a2c037725d068792e532f18f8d407ed97f7aa1b4b2ba9492d20cbf145a13f8238f1be8aefa875acdb8bbb6f07a898e1d9d3a7b5d02f85c024daf

  • 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 4 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
  • System Location Discovery: System Language Discovery 1 TTPs 5 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 behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b303cf21786ffb3a53bcabd6e4f0c810N.exe
    "C:\Users\Admin\AppData\Local\Temp\b303cf21786ffb3a53bcabd6e4f0c810N.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:1292
    • C:\Users\Admin\AppData\Local\Temp\vnc.exe
      "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:2884
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
        • Maps connected drives based on registry
        PID:2776
    • 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
      PID:2792
      • 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⤵
        • Scheduled Task/Job: Scheduled Task
        PID:1696
      • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
        "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
        3⤵
          PID:1232
          • 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⤵
            • Scheduled Task/Job: Scheduled Task
            PID:2544
          • C:\Windows\SysWOW64\cmd.exe
            cmd /c ""C:\Users\Admin\AppData\Local\Temp\2yhP1A6KuXDZ.bat" "
            4⤵
              PID:2180
              • C:\Windows\SysWOW64\chcp.com
                chcp 65001
                5⤵
                  PID:2324
                • C:\Windows\SysWOW64\PING.EXE
                  ping -n 10 localhost
                  5⤵
                  • System Network Configuration Discovery: Internet Connection Discovery
                  • Runs ping.exe
                  PID:2064
                • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                  "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                  5⤵
                    PID:1532
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -u -p 1232 -s 1532
                  4⤵
                  • Program crash
                  PID:2320
            • C:\Users\Admin\AppData\Local\Temp\b303cf21786ffb3a53bcabd6e4f0c810N.exe
              "C:\Users\Admin\AppData\Local\Temp\b303cf21786ffb3a53bcabd6e4f0c810N.exe"
              2⤵
              • System Location Discovery: System Language Discovery
              PID:2904
            • 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:2836
          • C:\Windows\system32\taskeng.exe
            taskeng.exe {97820BF9-9BE2-4F20-88F0-3E7BAD3BB1BA} S-1-5-21-2212144002-1172735686-1556890956-1000:MVFYZPLM\Admin:Interactive:[1]
            1⤵
              PID:3032
              • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                2⤵
                  PID:2060
                  • C:\Users\Admin\AppData\Local\Temp\vnc.exe
                    "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
                    3⤵
                      PID:2452
                      • C:\Windows\system32\svchost.exe
                        C:\Windows\system32\svchost.exe -k
                        4⤵
                          PID:584
                      • C:\Users\Admin\AppData\Local\Temp\windef.exe
                        "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                        3⤵
                          PID:2160
                        • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                          "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
                          3⤵
                            PID:1680
                          • 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:2008

                      Network

                      MITRE ATT&CK Enterprise v15

                      Replay Monitor

                      Loading Replay Monitor...

                      Downloads

                      • C:\Users\Admin\AppData\Local\Temp\2yhP1A6KuXDZ.bat

                        Filesize

                        208B

                        MD5

                        1ffa841967b8ab11f9ad828eaf4410ab

                        SHA1

                        dd93d703250eb8222311a755e7186cd36b4249b4

                        SHA256

                        62df89e110937fdf5e20c0400f04f8081e2861442cc554fad76a8e6a092c545a

                        SHA512

                        483db5c00cd237fdba3ce3012904228abad64fc5ba8a19b4f721a0bd4d3207bd86eb6f0278831884b03fbbd9bb33535d3f11705a28ca91c03dcf6994087b956f

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

                        MD5

                        d41d8cd98f00b204e9800998ecf8427e

                        SHA1

                        da39a3ee5e6b4b0d3255bfef95601890afd80709

                        SHA256

                        e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                        SHA512

                        cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

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

                        Filesize

                        349KB

                        MD5

                        b4a202e03d4135484d0e730173abcc72

                        SHA1

                        01b30014545ea526c15a60931d676f9392ea0c70

                        SHA256

                        7050608d53f80269df951d00883ed79815c060ce7678a76b5c3f6a2a985beea9

                        SHA512

                        632a035a3b722ea29b02aad1f0da3df5bdc38abc7e6617223790955c6c0830f1070b528680416d5c63ea5e846074cdad87f06c21c35a77b1ccc4edc089d8b1fb

                      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\7X279LT1.txt

                        Filesize

                        211B

                        MD5

                        812dc60908060a884d40bdee736adca8

                        SHA1

                        39c3bfdec77f60827fc34ddf07bd8f919a7da075

                        SHA256

                        fd1fd574835fafc5467366faf660ef99092c9081ee1e030283330db553e0b56d

                        SHA512

                        8a46d2d31df26a35056b446e75955b958a3e18500964337aa208ac535759f2472c624fd22bec1bcb9dfb14cb8bc81e52e1bb456faf99010f1283b4fe9d2a2cac

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

                        Filesize

                        2.0MB

                        MD5

                        424960a397b4a67860a98b9035452ddf

                        SHA1

                        d82d650e4359979ea0a9a0276e8e9a5d7301f34c

                        SHA256

                        9a1e39e70f888dd512478bb808fc511dea5393f964e19cc5a4390e93bbea8951

                        SHA512

                        0aeb008bdc1d05cf3a339ec63c28e09283226a795f11378a994fdc68ed2dbaaae0d7c758ef4756e15ed466730c8bd36ac82dc2efb0cb3badf8a23e755a5f3756

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

                        Filesize

                        405KB

                        MD5

                        b8ba87ee4c3fc085a2fed0d839aadce1

                        SHA1

                        b3a2e3256406330e8b1779199bb2b9865122d766

                        SHA256

                        4e8a99cd33c9e5c747a3ce8f1a3e17824846f4a8f7cb0631aebd0815db2ce3a4

                        SHA512

                        7a775a12cd5bcd182d64be0d31f800b456ca6d1b531189cea9c72e1940871cfe92ccd005938f67bfa4784ae44c54b3a7ea29a5bb59766e98c78bf53b680f2ab2

                      • memory/584-123-0x000007FFFFFD9000-0x000007FFFFFDA000-memory.dmp

                        Filesize

                        4KB

                      • memory/584-124-0x00000000003A0000-0x000000000043C000-memory.dmp

                        Filesize

                        624KB

                      • memory/584-128-0x00000000003A0000-0x000000000043C000-memory.dmp

                        Filesize

                        624KB

                      • memory/1232-62-0x00000000010A0000-0x00000000010FE000-memory.dmp

                        Filesize

                        376KB

                      • memory/1680-119-0x0000000000080000-0x00000000000A0000-memory.dmp

                        Filesize

                        128KB

                      • memory/1680-115-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

                        Filesize

                        4KB

                      • memory/1680-112-0x0000000000080000-0x00000000000A0000-memory.dmp

                        Filesize

                        128KB

                      • memory/2776-44-0x0000000000020000-0x0000000000021000-memory.dmp

                        Filesize

                        4KB

                      • memory/2776-51-0x0000000000410000-0x00000000004AC000-memory.dmp

                        Filesize

                        624KB

                      • memory/2776-47-0x0000000000410000-0x00000000004AC000-memory.dmp

                        Filesize

                        624KB

                      • memory/2776-46-0x000007FFFFFD6000-0x000007FFFFFD7000-memory.dmp

                        Filesize

                        4KB

                      • memory/2792-52-0x0000000001190000-0x00000000011EE000-memory.dmp

                        Filesize

                        376KB

                      • memory/2904-28-0x0000000000400000-0x0000000000420000-memory.dmp

                        Filesize

                        128KB

                      • memory/2904-29-0x0000000000400000-0x0000000000420000-memory.dmp

                        Filesize

                        128KB

                      • memory/2904-35-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

                        Filesize

                        4KB

                      • memory/2904-39-0x0000000000400000-0x0000000000420000-memory.dmp

                        Filesize

                        128KB