Analysis

  • max time kernel
    10s
  • max time network
    142s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    08-05-2021 22:25

General

  • Target

    4a3c159d0b62a125581bce5cd63f7216751b5c30ebb5098245e16b2ec0de9d56.exe

  • Size

    2.0MB

  • MD5

    baf7dc29e577a1877cb24115ea687092

  • SHA1

    01091eded50925c119bafbd4f5b57ff9d2b695a2

  • SHA256

    4a3c159d0b62a125581bce5cd63f7216751b5c30ebb5098245e16b2ec0de9d56

  • SHA512

    594f4708a36229923129f82175706d1b07715e60b448f06a7cf34a8b7f985c231ed80b27cf5358625010b61014458cf1b3afd92930fc2819c1a5b9fa1d9f85b0

Malware Config

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.

  • 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
  • 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 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4a3c159d0b62a125581bce5cd63f7216751b5c30ebb5098245e16b2ec0de9d56.exe
    "C:\Users\Admin\AppData\Local\Temp\4a3c159d0b62a125581bce5cd63f7216751b5c30ebb5098245e16b2ec0de9d56.exe"
    1⤵
    • Enumerates connected drives
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:512
    • 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:1252
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
        • Maps connected drives based on registry
        PID:1596
    • 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:1584
      • 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:192
      • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
        "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2388
        • 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:3748
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\17iodOHAGMWy.bat" "
          4⤵
            PID:3284
            • C:\Windows\SysWOW64\chcp.com
              chcp 65001
              5⤵
                PID:1356
              • C:\Windows\SysWOW64\PING.EXE
                ping -n 10 localhost
                5⤵
                • Runs ping.exe
                PID:1724
              • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                5⤵
                  PID:2528
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 2388 -s 1892
                4⤵
                • Program crash
                PID:3240
          • C:\Users\Admin\AppData\Local\Temp\4a3c159d0b62a125581bce5cd63f7216751b5c30ebb5098245e16b2ec0de9d56.exe
            "C:\Users\Admin\AppData\Local\Temp\4a3c159d0b62a125581bce5cd63f7216751b5c30ebb5098245e16b2ec0de9d56.exe"
            2⤵
              PID:2704
            • 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:3932
          • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
            C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
            1⤵
              PID:1216
              • C:\Users\Admin\AppData\Local\Temp\vnc.exe
                "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
                2⤵
                  PID:420
                  • C:\Windows\system32\svchost.exe
                    C:\Windows\system32\svchost.exe -k
                    3⤵
                      PID:688
                  • C:\Users\Admin\AppData\Local\Temp\windef.exe
                    "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                    2⤵
                      PID:736
                    • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                      "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
                      2⤵
                        PID:776
                      • 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:3860

                    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\17iodOHAGMWy.bat
                      MD5

                      f5cea9edbe60f45a307333d4b0a15fc1

                      SHA1

                      b20a32ee419776356b4487d20a512f0b035e5cf7

                      SHA256

                      84e19b255e6f92f5708a6d48574ba9d4735ee84281b8d352397f1d8ecc8fd213

                      SHA512

                      d82cb95cdfc4e5f4705eedb639bc3c0af46a7d969c8904afd55af868cffbe549be1d032646a93cf850abf6b2ddc2373f7f2515e421f78de66e7022ee797d84bf

                    • 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

                      bcfa5956eca9f2156a14b16bd4fffa58

                      SHA1

                      e6d65cb7cf4566e34c0d76bc305b12e573793920

                      SHA256

                      c207d0df22bbd9aa1ac4502466a375940d5022cb382e5b4f472064f034297494

                      SHA512

                      cd5209946b8ea25af27c70e39ccbfbe82dd220e154a3899dd3fd23379487c9623b3deaeae785822187f395ae6d1feecab89532094a7bbab3c426ed48d39fa42a

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

                      bcfa5956eca9f2156a14b16bd4fffa58

                      SHA1

                      e6d65cb7cf4566e34c0d76bc305b12e573793920

                      SHA256

                      c207d0df22bbd9aa1ac4502466a375940d5022cb382e5b4f472064f034297494

                      SHA512

                      cd5209946b8ea25af27c70e39ccbfbe82dd220e154a3899dd3fd23379487c9623b3deaeae785822187f395ae6d1feecab89532094a7bbab3c426ed48d39fa42a

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

                      bcfa5956eca9f2156a14b16bd4fffa58

                      SHA1

                      e6d65cb7cf4566e34c0d76bc305b12e573793920

                      SHA256

                      c207d0df22bbd9aa1ac4502466a375940d5022cb382e5b4f472064f034297494

                      SHA512

                      cd5209946b8ea25af27c70e39ccbfbe82dd220e154a3899dd3fd23379487c9623b3deaeae785822187f395ae6d1feecab89532094a7bbab3c426ed48d39fa42a

                    • memory/192-138-0x0000000000000000-mapping.dmp
                    • memory/420-166-0x0000000000000000-mapping.dmp
                    • memory/512-133-0x0000000000860000-0x0000000000861000-memory.dmp
                      Filesize

                      4KB

                    • memory/688-168-0x0000000000000000-mapping.dmp
                    • memory/688-179-0x0000000000760000-0x00000000007FC000-memory.dmp
                      Filesize

                      624KB

                    • memory/688-178-0x0000000000800000-0x0000000000801000-memory.dmp
                      Filesize

                      4KB

                    • memory/736-169-0x0000000000000000-mapping.dmp
                    • memory/736-177-0x0000000004E20000-0x000000000531E000-memory.dmp
                      Filesize

                      5.0MB

                    • memory/776-180-0x0000000000400000-0x0000000000420000-memory.dmp
                      Filesize

                      128KB

                    • memory/776-184-0x000000000041A1F8-mapping.dmp
                    • memory/1216-187-0x0000000001740000-0x000000000188A000-memory.dmp
                      Filesize

                      1.3MB

                    • memory/1252-114-0x0000000000000000-mapping.dmp
                    • memory/1356-154-0x0000000000000000-mapping.dmp
                    • memory/1584-128-0x0000000004C80000-0x0000000004C81000-memory.dmp
                      Filesize

                      4KB

                    • memory/1584-137-0x0000000005CB0000-0x0000000005CB1000-memory.dmp
                      Filesize

                      4KB

                    • memory/1584-136-0x00000000058E0000-0x00000000058E1000-memory.dmp
                      Filesize

                      4KB

                    • memory/1584-135-0x0000000004B80000-0x0000000004B81000-memory.dmp
                      Filesize

                      4KB

                    • memory/1584-134-0x0000000004B70000-0x0000000004B71000-memory.dmp
                      Filesize

                      4KB

                    • memory/1584-123-0x0000000005180000-0x0000000005181000-memory.dmp
                      Filesize

                      4KB

                    • memory/1584-121-0x00000000002C0000-0x00000000002C1000-memory.dmp
                      Filesize

                      4KB

                    • memory/1584-117-0x0000000000000000-mapping.dmp
                    • memory/1596-131-0x0000000000EA0000-0x0000000000F3C000-memory.dmp
                      Filesize

                      624KB

                    • memory/1596-130-0x0000000000F40000-0x0000000000F41000-memory.dmp
                      Filesize

                      4KB

                    • memory/1596-120-0x0000000000000000-mapping.dmp
                    • memory/1724-155-0x0000000000000000-mapping.dmp
                    • memory/2388-146-0x0000000005170000-0x000000000566E000-memory.dmp
                      Filesize

                      5.0MB

                    • memory/2388-151-0x0000000006620000-0x0000000006621000-memory.dmp
                      Filesize

                      4KB

                    • memory/2388-139-0x0000000000000000-mapping.dmp
                    • memory/2528-162-0x0000000005530000-0x0000000005531000-memory.dmp
                      Filesize

                      4KB

                    • memory/2528-156-0x0000000000000000-mapping.dmp
                    • memory/2704-129-0x00000000000EA1F8-mapping.dmp
                    • memory/2704-124-0x00000000000D0000-0x00000000000F0000-memory.dmp
                      Filesize

                      128KB

                    • memory/3284-152-0x0000000000000000-mapping.dmp
                    • memory/3748-150-0x0000000000000000-mapping.dmp
                    • memory/3860-186-0x0000000000000000-mapping.dmp
                    • memory/3932-132-0x0000000000000000-mapping.dmp