Analysis

  • max time kernel
    10s
  • max time network
    145s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    11-05-2021 16:34

General

  • Target

    a9814592b5f7ee4565c521b14c1ba9001b9f059ca8e859ed891a777736dbfaa2.exe

  • Size

    2.0MB

  • MD5

    ac1657e5a25c37cb866b8372a1bd9972

  • SHA1

    7296219af54492077b14747d8fda9dc54385fa96

  • SHA256

    a9814592b5f7ee4565c521b14c1ba9001b9f059ca8e859ed891a777736dbfaa2

  • SHA512

    e070a86cc4bf0654048c122608269bd584bcebc83c6572c62b962206355bc3ae89443b2c2b8222e08573d33ac2d4f9090b722fb81e26b6abd0795e6a0180fe4c

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 Payload 11 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
  • 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\a9814592b5f7ee4565c521b14c1ba9001b9f059ca8e859ed891a777736dbfaa2.exe
    "C:\Users\Admin\AppData\Local\Temp\a9814592b5f7ee4565c521b14c1ba9001b9f059ca8e859ed891a777736dbfaa2.exe"
    1⤵
    • Enumerates connected drives
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3896
    • 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:1764
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
        • Maps connected drives based on registry
        PID:2124
    • 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:2320
      • 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:1132
      • 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:3692
        • 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:1856
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\BrN9i5r2bEEm.bat" "
          4⤵
            PID:3848
            • C:\Windows\System32\Conhost.exe
              \??\C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
              5⤵
                PID:1132
              • C:\Windows\SysWOW64\chcp.com
                chcp 65001
                5⤵
                  PID:2180
                • C:\Windows\SysWOW64\PING.EXE
                  ping -n 10 localhost
                  5⤵
                  • Runs ping.exe
                  PID:1536
                • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                  "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                  5⤵
                    PID:2788
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -u -p 3692 -s 2092
                  4⤵
                  • Program crash
                  PID:3876
            • C:\Users\Admin\AppData\Local\Temp\a9814592b5f7ee4565c521b14c1ba9001b9f059ca8e859ed891a777736dbfaa2.exe
              "C:\Users\Admin\AppData\Local\Temp\a9814592b5f7ee4565c521b14c1ba9001b9f059ca8e859ed891a777736dbfaa2.exe"
              2⤵
                PID:3724
              • 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:2248
            • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
              C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
              1⤵
                PID:3012
                • C:\Users\Admin\AppData\Local\Temp\vnc.exe
                  "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
                  2⤵
                    PID:1804
                    • C:\Windows\system32\svchost.exe
                      C:\Windows\system32\svchost.exe -k
                      3⤵
                        PID:1472
                    • C:\Users\Admin\AppData\Local\Temp\windef.exe
                      "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                      2⤵
                        PID:8
                      • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                        "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
                        2⤵
                          PID:2812
                        • 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:4092

                      Network

                      MITRE ATT&CK Enterprise v6

                      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\BrN9i5r2bEEm.bat

                        MD5

                        bdf3abfad030188521770d9eec3fbaf1

                        SHA1

                        de63571158eb5de9febf38782863075f058b70c9

                        SHA256

                        7e7f75cb56ececdb43d629661d43e53b473a242cc9973575a2e464f8f4c472ed

                        SHA512

                        63e881e131d4baaa373c15f648c5751252d83d84475c90003bfaea9ba16855c56d60339ea7d4876b6c9ae34740c2725e32b719ff1d7c649f28d4c4eeab8a5681

                      • 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

                        22cf2d47ff48027156252a54f78caad9

                        SHA1

                        3a27f0220e7c8c5b19754cd946a86cca383c35dc

                        SHA256

                        90f6b675395e1e07f667b29cf70b319e797ca506bb6c02407918466d21b87fb9

                        SHA512

                        32b29447e14f7a9effca389d09ed46540c1d3a3b135e7b9d0fce29959a4317591ecf4f90563ee082878c960f5d0350f54a9ebcb749825e0eb215231fe17c31db

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

                        MD5

                        22cf2d47ff48027156252a54f78caad9

                        SHA1

                        3a27f0220e7c8c5b19754cd946a86cca383c35dc

                        SHA256

                        90f6b675395e1e07f667b29cf70b319e797ca506bb6c02407918466d21b87fb9

                        SHA512

                        32b29447e14f7a9effca389d09ed46540c1d3a3b135e7b9d0fce29959a4317591ecf4f90563ee082878c960f5d0350f54a9ebcb749825e0eb215231fe17c31db

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

                        MD5

                        22cf2d47ff48027156252a54f78caad9

                        SHA1

                        3a27f0220e7c8c5b19754cd946a86cca383c35dc

                        SHA256

                        90f6b675395e1e07f667b29cf70b319e797ca506bb6c02407918466d21b87fb9

                        SHA512

                        32b29447e14f7a9effca389d09ed46540c1d3a3b135e7b9d0fce29959a4317591ecf4f90563ee082878c960f5d0350f54a9ebcb749825e0eb215231fe17c31db

                      • memory/8-169-0x0000000000000000-mapping.dmp

                      • memory/8-177-0x0000000005360000-0x000000000585E000-memory.dmp

                        Filesize

                        5.0MB

                      • memory/1132-138-0x0000000000000000-mapping.dmp

                      • memory/1472-168-0x0000000000000000-mapping.dmp

                      • memory/1472-178-0x0000000001070000-0x0000000001071000-memory.dmp

                        Filesize

                        4KB

                      • memory/1472-179-0x0000000000FD0000-0x000000000106C000-memory.dmp

                        Filesize

                        624KB

                      • memory/1536-155-0x0000000000000000-mapping.dmp

                      • memory/1764-114-0x0000000000000000-mapping.dmp

                      • memory/1804-166-0x0000000000000000-mapping.dmp

                      • memory/1856-150-0x0000000000000000-mapping.dmp

                      • memory/2124-132-0x0000000000050000-0x00000000000EC000-memory.dmp

                        Filesize

                        624KB

                      • memory/2124-117-0x0000000000000000-mapping.dmp

                      • memory/2124-131-0x00000000000F0000-0x00000000000F1000-memory.dmp

                        Filesize

                        4KB

                      • memory/2180-154-0x0000000000000000-mapping.dmp

                      • memory/2248-130-0x0000000000000000-mapping.dmp

                      • memory/2320-123-0x0000000004ED0000-0x0000000004ED1000-memory.dmp

                        Filesize

                        4KB

                      • memory/2320-136-0x0000000005730000-0x0000000005731000-memory.dmp

                        Filesize

                        4KB

                      • memory/2320-135-0x0000000004C10000-0x0000000004C11000-memory.dmp

                        Filesize

                        4KB

                      • memory/2320-134-0x00000000023F0000-0x00000000023F1000-memory.dmp

                        Filesize

                        4KB

                      • memory/2320-137-0x0000000005B20000-0x0000000005B21000-memory.dmp

                        Filesize

                        4KB

                      • memory/2320-118-0x0000000000000000-mapping.dmp

                      • memory/2320-121-0x0000000000120000-0x0000000000121000-memory.dmp

                        Filesize

                        4KB

                      • memory/2320-128-0x0000000004A70000-0x0000000004A71000-memory.dmp

                        Filesize

                        4KB

                      • memory/2788-156-0x0000000000000000-mapping.dmp

                      • memory/2788-162-0x0000000005010000-0x000000000550E000-memory.dmp

                        Filesize

                        5.0MB

                      • memory/2812-184-0x000000000041A1F8-mapping.dmp

                      • memory/3012-186-0x0000000003B70000-0x0000000003B71000-memory.dmp

                        Filesize

                        4KB

                      • memory/3692-146-0x0000000004EC0000-0x00000000053BE000-memory.dmp

                        Filesize

                        5.0MB

                      • memory/3692-139-0x0000000000000000-mapping.dmp

                      • memory/3692-151-0x0000000006410000-0x0000000006411000-memory.dmp

                        Filesize

                        4KB

                      • memory/3724-124-0x0000000000400000-0x0000000000420000-memory.dmp

                        Filesize

                        128KB

                      • memory/3724-129-0x000000000041A1F8-mapping.dmp

                      • memory/3848-152-0x0000000000000000-mapping.dmp

                      • memory/3896-133-0x00000000016B0000-0x000000000176D000-memory.dmp

                        Filesize

                        756KB

                      • memory/4092-187-0x0000000000000000-mapping.dmp