Analysis

  • max time kernel
    4s
  • max time network
    141s
  • platform
    windows7_x64
  • resource
    win7-20240705-en
  • resource tags

    arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
  • submitted
    19-08-2024 00:05

General

  • Target

    a44f5d2479507bebab71fd90f16b08ee3875cf676c667ddf2e192af88ed486e1.exe

  • Size

    2.0MB

  • MD5

    9eda91ef318131bd58b539cb7aaee6d2

  • SHA1

    73a89bba0ea8673187e08fa3622ecfa9f322db6e

  • SHA256

    a44f5d2479507bebab71fd90f16b08ee3875cf676c667ddf2e192af88ed486e1

  • SHA512

    04b05fad44adcad3840d30776fa5f2a1c3344c5a939fc660487cf6f81174ec1b73e1bf297ffe1649f31a3fc35e3c1833addd8b7ff7b257246bf4d8713ddad6d0

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKYO:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9Y4

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 3 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 9 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.

  • 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 8 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 3 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 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 37 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a44f5d2479507bebab71fd90f16b08ee3875cf676c667ddf2e192af88ed486e1.exe
    "C:\Users\Admin\AppData\Local\Temp\a44f5d2479507bebab71fd90f16b08ee3875cf676c667ddf2e192af88ed486e1.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:2088
    • 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:2400
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
        • Maps connected drives based on registry
        PID:1872
    • 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:1168
      • 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:1424
      • 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
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        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⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:588
    • C:\Users\Admin\AppData\Local\Temp\a44f5d2479507bebab71fd90f16b08ee3875cf676c667ddf2e192af88ed486e1.exe
      "C:\Users\Admin\AppData\Local\Temp\a44f5d2479507bebab71fd90f16b08ee3875cf676c667ddf2e192af88ed486e1.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2448
    • 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:2748

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \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/688-62-0x0000000000BF0000-0x0000000000C4E000-memory.dmp

    Filesize

    376KB

  • memory/1168-46-0x00000000011E0000-0x000000000123E000-memory.dmp

    Filesize

    376KB

  • memory/1872-49-0x000007FFFFFD5000-0x000007FFFFFD6000-memory.dmp

    Filesize

    4KB

  • memory/1872-54-0x0000000000480000-0x000000000051C000-memory.dmp

    Filesize

    624KB

  • memory/1872-50-0x0000000000480000-0x000000000051C000-memory.dmp

    Filesize

    624KB

  • memory/1872-47-0x0000000000020000-0x0000000000021000-memory.dmp

    Filesize

    4KB

  • memory/2088-30-0x0000000000B10000-0x0000000000B11000-memory.dmp

    Filesize

    4KB

  • memory/2448-33-0x00000000000C0000-0x00000000000E0000-memory.dmp

    Filesize

    128KB

  • memory/2448-39-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

    Filesize

    4KB

  • memory/2448-43-0x00000000000C0000-0x00000000000E0000-memory.dmp

    Filesize

    128KB

  • memory/2448-31-0x00000000000C0000-0x00000000000E0000-memory.dmp

    Filesize

    128KB