Analysis

  • max time kernel
    9s
  • max time network
    149s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    28-09-2021 09:08

General

  • Target

    16c80a82f353e2d4ba539b68fd79b969045f03d5f51c0fe3cd0e63c909d69d31.exe

  • Size

    2.0MB

  • MD5

    d2ec97dea95857be8abbb0ed46493b40

  • SHA1

    46cbf493bf9572bb206f8e89b52bcec0505e333a

  • SHA256

    16c80a82f353e2d4ba539b68fd79b969045f03d5f51c0fe3cd0e63c909d69d31

  • SHA512

    263f33f294ab306e7483aacfd8985970fc1e71ddfbd93e9ca7d7925bab72e971f8d18309d1d5dd0237099eff4a3ab20728d949e180a6875b4d3d1f786f0bc880

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 Payload 10 IoCs
  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Executes dropped EXE 3 IoCs
  • Enumerates connected drives 3 TTPs 24 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.

  • Suspicious use of SetThreadContext 2 IoCs
  • autoit_exe 3 IoCs

    AutoIT scripts compiled to PE executables.

  • Enumerates physical storage devices 1 TTPs

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

  • 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 4 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\16c80a82f353e2d4ba539b68fd79b969045f03d5f51c0fe3cd0e63c909d69d31.exe
    "C:\Users\Admin\AppData\Local\Temp\16c80a82f353e2d4ba539b68fd79b969045f03d5f51c0fe3cd0e63c909d69d31.exe"
    1⤵
    • Enumerates connected drives
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3596
    • 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:4152
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
        • Maps connected drives based on registry
        PID:1836
    • C:\Users\Admin\AppData\Local\Temp\windef.exe
      "C:\Users\Admin\AppData\Local\Temp\windef.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2220
      • 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:4484
      • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
        "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
        3⤵
        • Executes dropped EXE
        PID:4400
        • 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:4092
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\gKYIMPRlRZVh.bat" "
          4⤵
            PID:656
            • C:\Windows\SysWOW64\chcp.com
              chcp 65001
              5⤵
                PID:400
              • C:\Windows\SysWOW64\PING.EXE
                ping -n 10 localhost
                5⤵
                • Runs ping.exe
                PID:1044
              • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                5⤵
                  PID:1452
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 4400 -s 1668
                4⤵
                • Program crash
                PID:1384
          • C:\Users\Admin\AppData\Local\Temp\16c80a82f353e2d4ba539b68fd79b969045f03d5f51c0fe3cd0e63c909d69d31.exe
            "C:\Users\Admin\AppData\Local\Temp\16c80a82f353e2d4ba539b68fd79b969045f03d5f51c0fe3cd0e63c909d69d31.exe"
            2⤵
              PID:2232
            • 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:3992
          • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
            C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
            1⤵
              PID:1388
              • C:\Users\Admin\AppData\Local\Temp\vnc.exe
                "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
                2⤵
                  PID:2392
                  • C:\Windows\system32\svchost.exe
                    C:\Windows\system32\svchost.exe -k
                    3⤵
                      PID:2424
                  • C:\Users\Admin\AppData\Local\Temp\windef.exe
                    "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                    2⤵
                      PID:2656
                    • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                      "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
                      2⤵
                        PID:3880
                      • 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:4136

                    Network

                    MITRE ATT&CK Matrix ATT&CK v6

                    Execution

                    Scheduled Task

                    1
                    T1053

                    Persistence

                    Scheduled Task

                    1
                    T1053

                    Privilege Escalation

                    Scheduled Task

                    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\Microsoft\CLR_v4.0_32\UsageLogs\windef.exe.log
                      MD5

                      1efce85e583a7a2f123317a20f889d04

                      SHA1

                      60f71aa73ea2e2a48ed1c17e3c6d440abf39c914

                      SHA256

                      2b5532a94879134a876b11c188ade1a61deaba6a80fe1f3a3a77cc442f1cca0d

                      SHA512

                      45a5cd283e6a6ac34c3d8b1a6d73dc1cf52d8c974cf84624e8e9924eddaf354ccda929bce728b47db2b62175e47bdc3eaca6bc6b84d3565881fa87c50319d24c

                    • C:\Users\Admin\AppData\Local\Temp\gKYIMPRlRZVh.bat
                      MD5

                      931a1c2ae95cc72037cca15671171bdf

                      SHA1

                      2685de0f2e776c25d13e0ba38e119212f43c3efb

                      SHA256

                      c55df1980452a9817af22ec4325ae792c68a39c60d06eabd328f91ffbbd82a88

                      SHA512

                      49bfade2992040ec62343dccf1e9dbf454a048e1bf57ca74ac91ffb32900019787de3547e3004455d729a9ac64b6399277615a9fb2b91f287318486c2a6a3ecb

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

                      b8ba87ee4c3fc085a2fed0d839aadce1

                      SHA1

                      b3a2e3256406330e8b1779199bb2b9865122d766

                      SHA256

                      4e8a99cd33c9e5c747a3ce8f1a3e17824846f4a8f7cb0631aebd0815db2ce3a4

                      SHA512

                      7a775a12cd5bcd182d64be0d31f800b456ca6d1b531189cea9c72e1940871cfe92ccd005938f67bfa4784ae44c54b3a7ea29a5bb59766e98c78bf53b680f2ab2

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

                      b8ba87ee4c3fc085a2fed0d839aadce1

                      SHA1

                      b3a2e3256406330e8b1779199bb2b9865122d766

                      SHA256

                      4e8a99cd33c9e5c747a3ce8f1a3e17824846f4a8f7cb0631aebd0815db2ce3a4

                      SHA512

                      7a775a12cd5bcd182d64be0d31f800b456ca6d1b531189cea9c72e1940871cfe92ccd005938f67bfa4784ae44c54b3a7ea29a5bb59766e98c78bf53b680f2ab2

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

                      b8ba87ee4c3fc085a2fed0d839aadce1

                      SHA1

                      b3a2e3256406330e8b1779199bb2b9865122d766

                      SHA256

                      4e8a99cd33c9e5c747a3ce8f1a3e17824846f4a8f7cb0631aebd0815db2ce3a4

                      SHA512

                      7a775a12cd5bcd182d64be0d31f800b456ca6d1b531189cea9c72e1940871cfe92ccd005938f67bfa4784ae44c54b3a7ea29a5bb59766e98c78bf53b680f2ab2

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

                      b4a202e03d4135484d0e730173abcc72

                      SHA1

                      01b30014545ea526c15a60931d676f9392ea0c70

                      SHA256

                      7050608d53f80269df951d00883ed79815c060ce7678a76b5c3f6a2a985beea9

                      SHA512

                      632a035a3b722ea29b02aad1f0da3df5bdc38abc7e6617223790955c6c0830f1070b528680416d5c63ea5e846074cdad87f06c21c35a77b1ccc4edc089d8b1fb

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

                      b4a202e03d4135484d0e730173abcc72

                      SHA1

                      01b30014545ea526c15a60931d676f9392ea0c70

                      SHA256

                      7050608d53f80269df951d00883ed79815c060ce7678a76b5c3f6a2a985beea9

                      SHA512

                      632a035a3b722ea29b02aad1f0da3df5bdc38abc7e6617223790955c6c0830f1070b528680416d5c63ea5e846074cdad87f06c21c35a77b1ccc4edc089d8b1fb

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

                      b4a202e03d4135484d0e730173abcc72

                      SHA1

                      01b30014545ea526c15a60931d676f9392ea0c70

                      SHA256

                      7050608d53f80269df951d00883ed79815c060ce7678a76b5c3f6a2a985beea9

                      SHA512

                      632a035a3b722ea29b02aad1f0da3df5bdc38abc7e6617223790955c6c0830f1070b528680416d5c63ea5e846074cdad87f06c21c35a77b1ccc4edc089d8b1fb

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

                      b4a202e03d4135484d0e730173abcc72

                      SHA1

                      01b30014545ea526c15a60931d676f9392ea0c70

                      SHA256

                      7050608d53f80269df951d00883ed79815c060ce7678a76b5c3f6a2a985beea9

                      SHA512

                      632a035a3b722ea29b02aad1f0da3df5bdc38abc7e6617223790955c6c0830f1070b528680416d5c63ea5e846074cdad87f06c21c35a77b1ccc4edc089d8b1fb

                    • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                      MD5

                      b4a202e03d4135484d0e730173abcc72

                      SHA1

                      01b30014545ea526c15a60931d676f9392ea0c70

                      SHA256

                      7050608d53f80269df951d00883ed79815c060ce7678a76b5c3f6a2a985beea9

                      SHA512

                      632a035a3b722ea29b02aad1f0da3df5bdc38abc7e6617223790955c6c0830f1070b528680416d5c63ea5e846074cdad87f06c21c35a77b1ccc4edc089d8b1fb

                    • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                      MD5

                      b4a202e03d4135484d0e730173abcc72

                      SHA1

                      01b30014545ea526c15a60931d676f9392ea0c70

                      SHA256

                      7050608d53f80269df951d00883ed79815c060ce7678a76b5c3f6a2a985beea9

                      SHA512

                      632a035a3b722ea29b02aad1f0da3df5bdc38abc7e6617223790955c6c0830f1070b528680416d5c63ea5e846074cdad87f06c21c35a77b1ccc4edc089d8b1fb

                    • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                      MD5

                      b4a202e03d4135484d0e730173abcc72

                      SHA1

                      01b30014545ea526c15a60931d676f9392ea0c70

                      SHA256

                      7050608d53f80269df951d00883ed79815c060ce7678a76b5c3f6a2a985beea9

                      SHA512

                      632a035a3b722ea29b02aad1f0da3df5bdc38abc7e6617223790955c6c0830f1070b528680416d5c63ea5e846074cdad87f06c21c35a77b1ccc4edc089d8b1fb

                    • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                      MD5

                      f8e6be93eeed4a65eccbcbb891ed84f5

                      SHA1

                      a6d8af94e0ab74e870f918230dd98f5d3a297fed

                      SHA256

                      5fa5977cdfd7c86f46440c30b133cb906af85203b765e46a9d95cb8cee184842

                      SHA512

                      33698cdef4d9038500243a9c6624603cab35baa048d86dbf00d191d95a44cfabad0b2beae55307d3aae181e30960eec101ff9d42d2044b2156ff43e7bae26a36

                    • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                      MD5

                      f8e6be93eeed4a65eccbcbb891ed84f5

                      SHA1

                      a6d8af94e0ab74e870f918230dd98f5d3a297fed

                      SHA256

                      5fa5977cdfd7c86f46440c30b133cb906af85203b765e46a9d95cb8cee184842

                      SHA512

                      33698cdef4d9038500243a9c6624603cab35baa048d86dbf00d191d95a44cfabad0b2beae55307d3aae181e30960eec101ff9d42d2044b2156ff43e7bae26a36

                    • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                      MD5

                      f8e6be93eeed4a65eccbcbb891ed84f5

                      SHA1

                      a6d8af94e0ab74e870f918230dd98f5d3a297fed

                      SHA256

                      5fa5977cdfd7c86f46440c30b133cb906af85203b765e46a9d95cb8cee184842

                      SHA512

                      33698cdef4d9038500243a9c6624603cab35baa048d86dbf00d191d95a44cfabad0b2beae55307d3aae181e30960eec101ff9d42d2044b2156ff43e7bae26a36

                    • memory/400-155-0x0000000000000000-mapping.dmp
                    • memory/656-153-0x0000000000000000-mapping.dmp
                    • memory/1044-156-0x0000000000000000-mapping.dmp
                    • memory/1452-163-0x00000000051C0000-0x00000000051C1000-memory.dmp
                      Filesize

                      4KB

                    • memory/1452-157-0x0000000000000000-mapping.dmp
                    • memory/1836-134-0x0000000000ED0000-0x0000000000F6C000-memory.dmp
                      Filesize

                      624KB

                    • memory/1836-133-0x0000000000F70000-0x0000000000F71000-memory.dmp
                      Filesize

                      4KB

                    • memory/1836-123-0x0000000000000000-mapping.dmp
                    • memory/2220-138-0x0000000006B10000-0x0000000006B11000-memory.dmp
                      Filesize

                      4KB

                    • memory/2220-128-0x0000000000F00000-0x0000000000F01000-memory.dmp
                      Filesize

                      4KB

                    • memory/2220-131-0x0000000005EA0000-0x0000000005EA1000-memory.dmp
                      Filesize

                      4KB

                    • memory/2220-132-0x00000000057C0000-0x00000000057C1000-memory.dmp
                      Filesize

                      4KB

                    • memory/2220-137-0x0000000006720000-0x0000000006721000-memory.dmp
                      Filesize

                      4KB

                    • memory/2220-136-0x0000000005BA0000-0x0000000005BA1000-memory.dmp
                      Filesize

                      4KB

                    • memory/2220-118-0x0000000000000000-mapping.dmp
                    • memory/2220-135-0x0000000005860000-0x0000000005861000-memory.dmp
                      Filesize

                      4KB

                    • memory/2232-127-0x000000000041A1F8-mapping.dmp
                    • memory/2232-120-0x0000000000400000-0x0000000000420000-memory.dmp
                      Filesize

                      128KB

                    • memory/2392-167-0x0000000000000000-mapping.dmp
                    • memory/2424-169-0x0000000000000000-mapping.dmp
                    • memory/2424-178-0x0000000000E10000-0x0000000000E11000-memory.dmp
                      Filesize

                      4KB

                    • memory/2424-179-0x0000000000D70000-0x0000000000E0C000-memory.dmp
                      Filesize

                      624KB

                    • memory/2656-180-0x0000000004FB0000-0x00000000054AE000-memory.dmp
                      Filesize

                      5.0MB

                    • memory/2656-170-0x0000000000000000-mapping.dmp
                    • memory/3596-124-0x00000000016E0000-0x00000000016E1000-memory.dmp
                      Filesize

                      4KB

                    • memory/3880-185-0x000000000041A1F8-mapping.dmp
                    • memory/3992-129-0x0000000000000000-mapping.dmp
                    • memory/4092-151-0x0000000000000000-mapping.dmp
                    • memory/4136-187-0x0000000000000000-mapping.dmp
                    • memory/4152-115-0x0000000000000000-mapping.dmp
                    • memory/4400-147-0x0000000004E70000-0x000000000536E000-memory.dmp
                      Filesize

                      5.0MB

                    • memory/4400-140-0x0000000000000000-mapping.dmp
                    • memory/4400-152-0x0000000006400000-0x0000000006401000-memory.dmp
                      Filesize

                      4KB

                    • memory/4484-139-0x0000000000000000-mapping.dmp