Analysis

  • max time kernel
    3s
  • max time network
    117s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    11-10-2024 02:42

General

  • Target

    a7c50465228b8a87dc31914f11d0720d33b2191171e9674c32cc774815dbd331N.exe

  • Size

    2.0MB

  • MD5

    35d64806c83e40323809a0f5d65cb010

  • SHA1

    89797682194294de224ce2aa895b7d4c437a831f

  • SHA256

    a7c50465228b8a87dc31914f11d0720d33b2191171e9674c32cc774815dbd331

  • SHA512

    dc570864b8fbf42766fde1b1da0f56bb4e53129ba06daa3d732f81acdeabfe39de323b78940cb0402cff296355b23fa783954b524269b72a3f346e807c9d63f5

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKYj:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9Y1

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 RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 5 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).

  • System Location Discovery: System Language Discovery 1 TTPs 6 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 behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 29 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a7c50465228b8a87dc31914f11d0720d33b2191171e9674c32cc774815dbd331N.exe
    "C:\Users\Admin\AppData\Local\Temp\a7c50465228b8a87dc31914f11d0720d33b2191171e9674c32cc774815dbd331N.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:2124
    • 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:2272
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
        • Maps connected drives based on registry
        PID:3044
    • 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
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2444
      • 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:2624
      • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
        "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
        3⤵
          PID:2536
          • 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:1508
      • C:\Users\Admin\AppData\Local\Temp\a7c50465228b8a87dc31914f11d0720d33b2191171e9674c32cc774815dbd331N.exe
        "C:\Users\Admin\AppData\Local\Temp\a7c50465228b8a87dc31914f11d0720d33b2191171e9674c32cc774815dbd331N.exe"
        2⤵
        • System Location Discovery: System Language Discovery
        PID:2044
      • 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:2120
    • C:\Windows\system32\taskeng.exe
      taskeng.exe {228A17B7-D147-4BEB-9A63-2E133727D8C9} S-1-5-21-1488793075-819845221-1497111674-1000:UPNECVIU\Admin:Interactive:[1]
      1⤵
        PID:764
        • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
          C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
          2⤵
            PID:1840
            • C:\Users\Admin\AppData\Local\Temp\vnc.exe
              "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
              3⤵
                PID:1100
                • C:\Windows\system32\svchost.exe
                  C:\Windows\system32\svchost.exe -k
                  4⤵
                    PID:1816
                • C:\Users\Admin\AppData\Local\Temp\windef.exe
                  "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                  3⤵
                    PID:1756
                  • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                    "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
                    3⤵
                      PID:2988
                    • 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:2572

                Network

                MITRE ATT&CK Enterprise v15

                Replay Monitor

                Loading Replay Monitor...

                Downloads

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

                  MD5

                  d41d8cd98f00b204e9800998ecf8427e

                  SHA1

                  da39a3ee5e6b4b0d3255bfef95601890afd80709

                  SHA256

                  e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                  SHA512

                  cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

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

                  Filesize

                  211B

                  MD5

                  bc365b0560dfb1c59da2e07d5fd08e39

                  SHA1

                  0f0e84e335c1dbfa171e6fabbeed41f9a0eeda72

                  SHA256

                  fb86e64ddb7695cf0cef8e7d52aa79923cd03f5431c78408b3c6e5e76cbfd1df

                  SHA512

                  bc4b3a0882afc10528d8fdbc9e1f9523cc95bfe18d81d86969d1da2f4deb5ac6cdc7f6a7ce799ac56410b35d5a2be2cb2527b99a3124e71704c81dc87024e9b8

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

                  Filesize

                  2.0MB

                  MD5

                  2da15ebb1334fc33bb98aa0b0f82c159

                  SHA1

                  377c857abc6aee705adc647edb3bf618d6fe66f8

                  SHA256

                  fbb7179a40640bba6bb698bdca896e223a332b3ae0eb149cee463c9b2f9700e9

                  SHA512

                  7e904d563bf43ec0d4984eb8a0b22cfdc615d256c5884ffb669c2f5276f9f9fd47cee48ee2054d3a390c1a2f32c72c63a487e5fa43d6b7972f03ee44d008c2c3

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

                  Filesize

                  405KB

                  MD5

                  b8ba87ee4c3fc085a2fed0d839aadce1

                  SHA1

                  b3a2e3256406330e8b1779199bb2b9865122d766

                  SHA256

                  4e8a99cd33c9e5c747a3ce8f1a3e17824846f4a8f7cb0631aebd0815db2ce3a4

                  SHA512

                  7a775a12cd5bcd182d64be0d31f800b456ca6d1b531189cea9c72e1940871cfe92ccd005938f67bfa4784ae44c54b3a7ea29a5bb59766e98c78bf53b680f2ab2

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

                  Filesize

                  349KB

                  MD5

                  b4a202e03d4135484d0e730173abcc72

                  SHA1

                  01b30014545ea526c15a60931d676f9392ea0c70

                  SHA256

                  7050608d53f80269df951d00883ed79815c060ce7678a76b5c3f6a2a985beea9

                  SHA512

                  632a035a3b722ea29b02aad1f0da3df5bdc38abc7e6617223790955c6c0830f1070b528680416d5c63ea5e846074cdad87f06c21c35a77b1ccc4edc089d8b1fb

                • memory/1756-106-0x0000000000AF0000-0x0000000000B4E000-memory.dmp

                  Filesize

                  376KB

                • memory/1816-103-0x00000000004B0000-0x000000000054C000-memory.dmp

                  Filesize

                  624KB

                • memory/1816-86-0x000007FFFFFDB000-0x000007FFFFFDC000-memory.dmp

                  Filesize

                  4KB

                • memory/1816-88-0x00000000004B0000-0x000000000054C000-memory.dmp

                  Filesize

                  624KB

                • memory/2044-31-0x00000000000C0000-0x00000000000E0000-memory.dmp

                  Filesize

                  128KB

                • memory/2044-30-0x00000000000C0000-0x00000000000E0000-memory.dmp

                  Filesize

                  128KB

                • memory/2044-37-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

                  Filesize

                  4KB

                • memory/2044-41-0x00000000000C0000-0x00000000000E0000-memory.dmp

                  Filesize

                  128KB

                • memory/2124-29-0x00000000007B0000-0x00000000007B1000-memory.dmp

                  Filesize

                  4KB

                • memory/2444-45-0x00000000009E0000-0x0000000000A3E000-memory.dmp

                  Filesize

                  376KB

                • memory/2536-61-0x0000000000D90000-0x0000000000DEE000-memory.dmp

                  Filesize

                  376KB

                • memory/2988-112-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

                  Filesize

                  4KB

                • memory/3044-46-0x0000000000020000-0x0000000000021000-memory.dmp

                  Filesize

                  4KB

                • memory/3044-53-0x0000000000150000-0x00000000001EC000-memory.dmp

                  Filesize

                  624KB

                • memory/3044-48-0x000007FFFFFD9000-0x000007FFFFFDA000-memory.dmp

                  Filesize

                  4KB

                • memory/3044-49-0x0000000000150000-0x00000000001EC000-memory.dmp

                  Filesize

                  624KB