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Analysis

  • max time kernel
    89s
  • max time network
    131s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    30/01/2023, 19:52

General

  • Target

    efb2d35f2a187b18fb7fe32eb68dd927.exe

  • Size

    4.9MB

  • MD5

    efb2d35f2a187b18fb7fe32eb68dd927

  • SHA1

    12a73b569e16637e6e783b59d627f44ce0bf26d2

  • SHA256

    10b1a61abfb2f91eea0fec8b52e5602c0f8630703a159593d23daf3c76da145f

  • SHA512

    1f97643fd6990f19c17df867b0d86e3ef14837e09a500f2c4dff6652e81f3e965149e6b50b50f6dee257889c54b990248dd37b0920c1a630eea4cdca06260b34

  • SSDEEP

    98304:p2cPK8sxc2Ml4nALiVRKC4x0UWMqs+QY/c0PjiqBa:QCK3e2Ml6AmVR80MbGjiqBa

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Adobe XD

C2

stopman.ooguy.com:1980

craftIP.gize.com:1980

Mutex

NtOcRpqrVzcLWKF9xK

Attributes
  • encryption_key

    PB6sv6yXkRlKJgQI1D4W

  • install_name

    Client.exe

  • log_directory

    mincraft

  • reconnect_delay

    5000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 6 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

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

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

  • Modifies Internet Explorer settings 1 TTPs 5 IoCs
  • Modifies system certificate store 2 TTPs 7 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 34 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\efb2d35f2a187b18fb7fe32eb68dd927.exe
    "C:\Users\Admin\AppData\Local\Temp\efb2d35f2a187b18fb7fe32eb68dd927.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1748
    • C:\Users\Admin\AppData\Local\Temp\AdobexD.exe
      C:\Users\Admin\AppData\Local\Temp/AdobexD.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1220
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAANQAwAA==
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1912
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMQAwADsAIABTAGUAdAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAALQBFAHgAYwBsAHUAcwBpAG8AbgBQAGEAdABoACAAJwBDADoAXAAnAA==
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:280
      • C:\Users\Admin\AppData\Local\Temp\AdobexD.exe
        C:\Users\Admin\AppData\Local\Temp\AdobexD.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:1612
    • C:\Users\Admin\AppData\Local\Temp\Set-up.exe
      C:\Users\Admin\AppData\Local\Temp/Set-up.exe
      2⤵
      • Executes dropped EXE
      • Modifies Internet Explorer settings
      • Modifies system certificate store
      PID:1764

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    1.3MB

    MD5

    8c714e4006209f2c905366813be7f590

    SHA1

    1c9de3087ba737b38b02977b3d5f752772a37642

    SHA256

    a6711368ae1c290a47312cb9f649045fbc609699043f921d5b060171ec5a35c2

    SHA512

    41de564d28fbf094bc21b0dceef23e411e76254b51d18775757cb6712966f96238c4401a95f3501ef595255658a5360eb66801a0941dae354d9d972b67191f0a

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

    Filesize

    1.3MB

    MD5

    8c714e4006209f2c905366813be7f590

    SHA1

    1c9de3087ba737b38b02977b3d5f752772a37642

    SHA256

    a6711368ae1c290a47312cb9f649045fbc609699043f921d5b060171ec5a35c2

    SHA512

    41de564d28fbf094bc21b0dceef23e411e76254b51d18775757cb6712966f96238c4401a95f3501ef595255658a5360eb66801a0941dae354d9d972b67191f0a

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

    Filesize

    1.3MB

    MD5

    8c714e4006209f2c905366813be7f590

    SHA1

    1c9de3087ba737b38b02977b3d5f752772a37642

    SHA256

    a6711368ae1c290a47312cb9f649045fbc609699043f921d5b060171ec5a35c2

    SHA512

    41de564d28fbf094bc21b0dceef23e411e76254b51d18775757cb6712966f96238c4401a95f3501ef595255658a5360eb66801a0941dae354d9d972b67191f0a

  • C:\Users\Admin\AppData\Local\Temp\Set-up.exe

    Filesize

    7.3MB

    MD5

    bc0672307ff08325dc4348c89bdc8999

    SHA1

    45e37b595ac1b3ce6e3f6b6c12a9fa9c846addb4

    SHA256

    24d2666c00ecd02350af0d70c8a9b71ed2bf0ce2553e61506fc1cbba0a9156b3

    SHA512

    406c11bd4dbda325ee679f235988e8d1643d99de4dfd648d471857eee4892001011ffcc3fb9d1cda3161bce4fda70dcb2e5e3f1c5fd9e75091d49a6954864728

  • C:\Users\Admin\AppData\Local\Temp\Set-up.exe

    Filesize

    7.3MB

    MD5

    bc0672307ff08325dc4348c89bdc8999

    SHA1

    45e37b595ac1b3ce6e3f6b6c12a9fa9c846addb4

    SHA256

    24d2666c00ecd02350af0d70c8a9b71ed2bf0ce2553e61506fc1cbba0a9156b3

    SHA512

    406c11bd4dbda325ee679f235988e8d1643d99de4dfd648d471857eee4892001011ffcc3fb9d1cda3161bce4fda70dcb2e5e3f1c5fd9e75091d49a6954864728

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

    Filesize

    7KB

    MD5

    139451d7733ecb60b4f3724d82cb1a85

    SHA1

    487db39cd934da5d82c0ef40dcbca6840ef23f49

    SHA256

    88b2fa6d16bdf4413241ae0fd908c477bc74d3abe948f7240b80ace676622061

    SHA512

    bca4d9d530f563194adae5a0c2786f5e4bb860046ce98276382b2385522cc77df1bb377d3dc60bb509fcbdd0df7c33dfb21e4259df4a56c7dae43264e671b828

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

    Filesize

    1.3MB

    MD5

    8c714e4006209f2c905366813be7f590

    SHA1

    1c9de3087ba737b38b02977b3d5f752772a37642

    SHA256

    a6711368ae1c290a47312cb9f649045fbc609699043f921d5b060171ec5a35c2

    SHA512

    41de564d28fbf094bc21b0dceef23e411e76254b51d18775757cb6712966f96238c4401a95f3501ef595255658a5360eb66801a0941dae354d9d972b67191f0a

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

    Filesize

    1.3MB

    MD5

    8c714e4006209f2c905366813be7f590

    SHA1

    1c9de3087ba737b38b02977b3d5f752772a37642

    SHA256

    a6711368ae1c290a47312cb9f649045fbc609699043f921d5b060171ec5a35c2

    SHA512

    41de564d28fbf094bc21b0dceef23e411e76254b51d18775757cb6712966f96238c4401a95f3501ef595255658a5360eb66801a0941dae354d9d972b67191f0a

  • \Users\Admin\AppData\Local\Temp\Set-up.exe

    Filesize

    7.3MB

    MD5

    bc0672307ff08325dc4348c89bdc8999

    SHA1

    45e37b595ac1b3ce6e3f6b6c12a9fa9c846addb4

    SHA256

    24d2666c00ecd02350af0d70c8a9b71ed2bf0ce2553e61506fc1cbba0a9156b3

    SHA512

    406c11bd4dbda325ee679f235988e8d1643d99de4dfd648d471857eee4892001011ffcc3fb9d1cda3161bce4fda70dcb2e5e3f1c5fd9e75091d49a6954864728

  • memory/280-75-0x000000006FD40000-0x00000000702EB000-memory.dmp

    Filesize

    5.7MB

  • memory/280-76-0x000000006FD40000-0x00000000702EB000-memory.dmp

    Filesize

    5.7MB

  • memory/1220-66-0x00000000043E0000-0x0000000004472000-memory.dmp

    Filesize

    584KB

  • memory/1220-65-0x0000000000330000-0x00000000003D6000-memory.dmp

    Filesize

    664KB

  • memory/1220-64-0x0000000000D20000-0x0000000000E7C000-memory.dmp

    Filesize

    1.4MB

  • memory/1612-83-0x0000000000400000-0x000000000045E000-memory.dmp

    Filesize

    376KB

  • memory/1612-89-0x0000000000400000-0x000000000045E000-memory.dmp

    Filesize

    376KB

  • memory/1612-87-0x0000000000400000-0x000000000045E000-memory.dmp

    Filesize

    376KB

  • memory/1612-78-0x0000000000400000-0x000000000045E000-memory.dmp

    Filesize

    376KB

  • memory/1612-79-0x0000000000400000-0x000000000045E000-memory.dmp

    Filesize

    376KB

  • memory/1612-82-0x0000000000400000-0x000000000045E000-memory.dmp

    Filesize

    376KB

  • memory/1612-81-0x0000000000400000-0x000000000045E000-memory.dmp

    Filesize

    376KB

  • memory/1748-54-0x00000000767F1000-0x00000000767F3000-memory.dmp

    Filesize

    8KB

  • memory/1912-71-0x000000006FB50000-0x00000000700FB000-memory.dmp

    Filesize

    5.7MB

  • memory/1912-70-0x000000006FB50000-0x00000000700FB000-memory.dmp

    Filesize

    5.7MB

  • memory/1912-69-0x000000006FB50000-0x00000000700FB000-memory.dmp

    Filesize

    5.7MB