Analysis

  • max time kernel
    127s
  • max time network
    136s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    24-05-2024 09:28

General

  • Target

    6e0afb3139f4a822fb8e62492fbff4f4_JaffaCakes118.exe

  • Size

    348KB

  • MD5

    6e0afb3139f4a822fb8e62492fbff4f4

  • SHA1

    8acc07d47261f85b951beae1318e8a06ee5b1e62

  • SHA256

    489d79372f4dd063454ee6345567b4cc799262ccbc28ac56ccde8ab8376bdb4f

  • SHA512

    6ea362c2c8f7d4a3ac22cde95e2680e102f36e775cc6dadabbd3d71912c7c0e5034426c78c55261b5910512b7a54273edc9b04c872516f001dc2cb03f68f5393

  • SSDEEP

    6144:ocNHXf500MoE0y0AsNibhU7Z2eCwKlJ8zVefSuDi:Nd50N0yIWUpCll6VefRDi

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Monero1

C2

75.139.0.160:9871

108.72.117.71:9871

Mutex

QSR_MUTEX_SjYNYmwyMIEGFFUXAW

Attributes
  • encryption_key

    lGV9pIlTiS49bFQmGvYu

  • install_name

    Quas2.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Monero2

  • subdirectory

    quasr2

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 3 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 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.

  • Creates scheduled task(s) 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6e0afb3139f4a822fb8e62492fbff4f4_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\6e0afb3139f4a822fb8e62492fbff4f4_JaffaCakes118.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2700
    • C:\Windows\SysWOW64\schtasks.exe
      "schtasks" /create /tn "Monero2" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\6e0afb3139f4a822fb8e62492fbff4f4_JaffaCakes118.exe" /rl HIGHEST /f
      2⤵
      • Creates scheduled task(s)
      PID:2636
    • C:\Users\Admin\AppData\Roaming\quasr2\Quas2.exe
      "C:\Users\Admin\AppData\Roaming\quasr2\Quas2.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2600
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks" /create /tn "Monero2" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\quasr2\Quas2.exe" /rl HIGHEST /f
        3⤵
        • Creates scheduled task(s)
        PID:2448

Network

MITRE ATT&CK Matrix ATT&CK v13

Execution

Scheduled Task/Job

1
T1053

Persistence

Scheduled Task/Job

1
T1053

Privilege Escalation

Scheduled Task/Job

1
T1053

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Roaming\quasr2\Quas2.exe
    Filesize

    348KB

    MD5

    6e0afb3139f4a822fb8e62492fbff4f4

    SHA1

    8acc07d47261f85b951beae1318e8a06ee5b1e62

    SHA256

    489d79372f4dd063454ee6345567b4cc799262ccbc28ac56ccde8ab8376bdb4f

    SHA512

    6ea362c2c8f7d4a3ac22cde95e2680e102f36e775cc6dadabbd3d71912c7c0e5034426c78c55261b5910512b7a54273edc9b04c872516f001dc2cb03f68f5393

  • memory/2600-10-0x0000000000B20000-0x0000000000B7E000-memory.dmp
    Filesize

    376KB

  • memory/2600-11-0x00000000744C0000-0x0000000074BAE000-memory.dmp
    Filesize

    6.9MB

  • memory/2600-12-0x00000000744C0000-0x0000000074BAE000-memory.dmp
    Filesize

    6.9MB

  • memory/2600-13-0x00000000744C0000-0x0000000074BAE000-memory.dmp
    Filesize

    6.9MB

  • memory/2700-0-0x00000000744CE000-0x00000000744CF000-memory.dmp
    Filesize

    4KB

  • memory/2700-1-0x0000000000C50000-0x0000000000CAE000-memory.dmp
    Filesize

    376KB

  • memory/2700-2-0x00000000744C0000-0x0000000074BAE000-memory.dmp
    Filesize

    6.9MB

  • memory/2700-9-0x00000000744C0000-0x0000000074BAE000-memory.dmp
    Filesize

    6.9MB