Analysis

  • max time kernel
    3s
  • max time network
    32s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    04-12-2024 05:04

General

  • Target

    dece1eabc1938846d35a4ee328d743bd28f295e4abd01943aa68d221a02dc242N.exe

  • Size

    2.0MB

  • MD5

    88463b79296970a2ed8e5bfa128b9f20

  • SHA1

    214c3cb5d1939db569ec1fffb96ef9f9de689e3e

  • SHA256

    dece1eabc1938846d35a4ee328d743bd28f295e4abd01943aa68d221a02dc242

  • SHA512

    9c3b7b0b0657dbc42c625552f3a994ec206f46413ec1852d2dbf71df5eded3e191209c725f79dd33f2f016d4e917a4e99a1fa9500521f4431367fae532d399c0

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKYn:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9Y9

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.

  • Azorult family
  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar family
  • Quasar payload 5 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 13 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.

  • AutoIT Executable 1 IoCs

    AutoIT scripts compiled to PE executables.

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

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

  • Program crash 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • 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 use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 35 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\dece1eabc1938846d35a4ee328d743bd28f295e4abd01943aa68d221a02dc242N.exe
    "C:\Users\Admin\AppData\Local\Temp\dece1eabc1938846d35a4ee328d743bd28f295e4abd01943aa68d221a02dc242N.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:3052
    • C:\Users\Admin\AppData\Local\Temp\vnc.exe
      "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2388
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
          PID:264
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2388 -s 160
          3⤵
          • Loads dropped DLL
          • Program crash
          PID:2196
      • C:\Users\Admin\AppData\Local\Temp\windef.exe
        "C:\Users\Admin\AppData\Local\Temp\windef.exe"
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2496
        • 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⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:2584
        • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
          "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
          3⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          PID:688
          • 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:2348
      • C:\Users\Admin\AppData\Local\Temp\dece1eabc1938846d35a4ee328d743bd28f295e4abd01943aa68d221a02dc242N.exe
        "C:\Users\Admin\AppData\Local\Temp\dece1eabc1938846d35a4ee328d743bd28f295e4abd01943aa68d221a02dc242N.exe"
        2⤵
        • System Location Discovery: System Language Discovery
        PID:2864
      • 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:2808
    • C:\Windows\system32\taskeng.exe
      taskeng.exe {0ED961BC-C8AA-4F09-AA8B-AF8C3DF04A26} S-1-5-21-4177215427-74451935-3209572229-1000:JSMURNPT\Admin:Interactive:[1]
      1⤵
        PID:1716
        • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
          C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
          2⤵
            PID:1684
            • C:\Users\Admin\AppData\Local\Temp\vnc.exe
              "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
              3⤵
                PID:1616
                • C:\Windows\system32\svchost.exe
                  C:\Windows\system32\svchost.exe -k
                  4⤵
                    PID:380
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -u -p 1616 -s 160
                    4⤵
                    • Program crash
                    PID:1780
                • C:\Users\Admin\AppData\Local\Temp\windef.exe
                  "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                  3⤵
                    PID:2732
                  • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                    "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
                    3⤵
                      PID:1568
                    • 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:2888

                Network

                MITRE ATT&CK Enterprise v15

                Replay Monitor

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                Downloads

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

                  Filesize

                  405KB

                  MD5

                  b8ba87ee4c3fc085a2fed0d839aadce1

                  SHA1

                  b3a2e3256406330e8b1779199bb2b9865122d766

                  SHA256

                  4e8a99cd33c9e5c747a3ce8f1a3e17824846f4a8f7cb0631aebd0815db2ce3a4

                  SHA512

                  7a775a12cd5bcd182d64be0d31f800b456ca6d1b531189cea9c72e1940871cfe92ccd005938f67bfa4784ae44c54b3a7ea29a5bb59766e98c78bf53b680f2ab2

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

                  MD5

                  d41d8cd98f00b204e9800998ecf8427e

                  SHA1

                  da39a3ee5e6b4b0d3255bfef95601890afd80709

                  SHA256

                  e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                  SHA512

                  cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

                • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\439XX6RU.txt

                  Filesize

                  211B

                  MD5

                  a3728a31751005063011b05d69945bb8

                  SHA1

                  83e0a64eb6c103b26a2c7f0e02f1485a22d7b452

                  SHA256

                  c2658a27ecb749f22531d4a8ce6434f7f8e6887aee5af69c9fc7aba6ab14bc03

                  SHA512

                  f74dfd9c0f0cc42a2790eff6935874fd900cd8c0c7a2e8f6f8b1fbfa7623085e6bd13d08e3b44e7bec2e38ff5b2430c364ba3033ad8a79933d9ba8012d78af25

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

                  Filesize

                  2.0MB

                  MD5

                  b58a3694e7610b424a392a78eaaf8419

                  SHA1

                  ec5ef93043b6e8606423b957a1095d8540757340

                  SHA256

                  ec73c2a3ee16621878efdd29346ed26e8be0d4266fb8927625f037970e263c00

                  SHA512

                  619a95217107aba460adbc33e36218b4580fc9151efc14e9131fe5fb0bb21ea83e88a47ebc21ae2313e9aa54379a5e6365794edc527d6b67743dcff6284f61e7

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

                  Filesize

                  349KB

                  MD5

                  b4a202e03d4135484d0e730173abcc72

                  SHA1

                  01b30014545ea526c15a60931d676f9392ea0c70

                  SHA256

                  7050608d53f80269df951d00883ed79815c060ce7678a76b5c3f6a2a985beea9

                  SHA512

                  632a035a3b722ea29b02aad1f0da3df5bdc38abc7e6617223790955c6c0830f1070b528680416d5c63ea5e846074cdad87f06c21c35a77b1ccc4edc089d8b1fb

                • memory/688-58-0x0000000000FB0000-0x000000000100E000-memory.dmp

                  Filesize

                  376KB

                • memory/1568-101-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

                  Filesize

                  4KB

                • memory/1568-98-0x00000000000C0000-0x00000000000E0000-memory.dmp

                  Filesize

                  128KB

                • memory/1568-105-0x00000000000C0000-0x00000000000E0000-memory.dmp

                  Filesize

                  128KB

                • memory/2496-46-0x0000000000900000-0x000000000095E000-memory.dmp

                  Filesize

                  376KB

                • memory/2732-95-0x00000000002C0000-0x000000000031E000-memory.dmp

                  Filesize

                  376KB

                • memory/2864-43-0x0000000000080000-0x00000000000A0000-memory.dmp

                  Filesize

                  128KB

                • memory/2864-31-0x0000000000080000-0x00000000000A0000-memory.dmp

                  Filesize

                  128KB

                • memory/2864-39-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

                  Filesize

                  4KB

                • memory/2864-33-0x0000000000080000-0x00000000000A0000-memory.dmp

                  Filesize

                  128KB

                • memory/3052-30-0x0000000000920000-0x0000000000921000-memory.dmp

                  Filesize

                  4KB