Analysis

  • max time kernel
    4s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240705-en
  • resource tags

    arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
  • submitted
    13-08-2024 11:53

General

  • Target

    7185b3eaacc71151d8541600bb332030N.exe

  • Size

    2.0MB

  • MD5

    7185b3eaacc71151d8541600bb332030

  • SHA1

    5a8c40dd85cca0bef420a31cb02e419ebcf6c74b

  • SHA256

    7255cdba12d713b61c0f973ab0b1770efe3b3ea71e84ddc0245255b39e056e41

  • SHA512

    fcdea8925f4a7ae06a31d242c9eb70cf44f465db619a0ad2e27051ca3de482bf285c5b32758a95c8a0e72a060cf5f75743d4a765e53f830e637d8c6dd9d4c391

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKYf:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9YJ

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 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 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 WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7185b3eaacc71151d8541600bb332030N.exe
    "C:\Users\Admin\AppData\Local\Temp\7185b3eaacc71151d8541600bb332030N.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:2708
    • 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:2624
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
        • Maps connected drives based on registry
        PID:2652
    • 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:2644
      • 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:2912
      • 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:1944
        • 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:3012
    • C:\Users\Admin\AppData\Local\Temp\7185b3eaacc71151d8541600bb332030N.exe
      "C:\Users\Admin\AppData\Local\Temp\7185b3eaacc71151d8541600bb332030N.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2312
    • 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:2584

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/1944-64-0x0000000001140000-0x000000000119E000-memory.dmp

    Filesize

    376KB

  • memory/2312-43-0x0000000000080000-0x00000000000A0000-memory.dmp

    Filesize

    128KB

  • memory/2312-39-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

    Filesize

    4KB

  • memory/2312-33-0x0000000000080000-0x00000000000A0000-memory.dmp

    Filesize

    128KB

  • memory/2312-31-0x0000000000080000-0x00000000000A0000-memory.dmp

    Filesize

    128KB

  • memory/2644-53-0x0000000000010000-0x000000000006E000-memory.dmp

    Filesize

    376KB

  • memory/2652-54-0x00000000000D0000-0x000000000016C000-memory.dmp

    Filesize

    624KB

  • memory/2652-48-0x000007FFFFFDF000-0x000007FFFFFE0000-memory.dmp

    Filesize

    4KB

  • memory/2652-46-0x0000000000020000-0x0000000000021000-memory.dmp

    Filesize

    4KB

  • memory/2652-49-0x00000000000D0000-0x000000000016C000-memory.dmp

    Filesize

    624KB

  • memory/2708-30-0x00000000005D0000-0x00000000005D1000-memory.dmp

    Filesize

    4KB