Resubmissions

21-11-2024 23:40

241121-3n73pazmey 10

21-11-2024 23:28

241121-3gd62axjaj 10

Analysis

  • max time kernel
    150s
  • max time network
    144s
  • platform
    windows10-ltsc 2021_x64
  • resource
    win10ltsc2021-20241023-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system
  • submitted
    21-11-2024 23:40

General

  • Target

    xTSRv1.1.0.6.exe

  • Size

    344KB

  • MD5

    58862052bc9830249a3481c1f598bfa6

  • SHA1

    a1606388aae362146a32faf45815cb7aa2e0a3ec

  • SHA256

    bacfd4551eb96cd6a853ee55f7e1839fdffedf1309d00932f603d214bc4798fb

  • SHA512

    f5bb7b412ddb826d262b784d9538c2ea30d217e1d23691176c53735021ada2fec13f2559ecfa6096ae4860e004211897dc0c69b9b04a5451d2e3feb6bec80215

  • SSDEEP

    6144:u4HFNUocJ7fDktpXaWgvkoXZL8GaY4900NuiF1D48q3O:/FNUzJ7fOpXa7PXZI4r0tq3

Malware Config

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar family
  • Executes dropped EXE 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.

  • System Location Discovery: System Language Discovery 1 TTPs 4 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 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\xTSRv1.1.0.6.exe
    "C:\Users\Admin\AppData\Local\Temp\xTSRv1.1.0.6.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2288
    • C:\Windows\SysWOW64\schtasks.exe
      "schtasks" /create /tn "Windows Defender" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\xTSRv1.1.0.6.exe" /rl HIGHEST /f
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:4936
    • C:\Users\Admin\AppData\Roaming\driver\driver.exe
      "C:\Users\Admin\AppData\Roaming\driver\driver.exe" -d2
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1184
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks" /create /tn "Windows Defender" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\driver\driver.exe" /rl HIGHEST /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:3988

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\driver\driver.exe

    Filesize

    344KB

    MD5

    58862052bc9830249a3481c1f598bfa6

    SHA1

    a1606388aae362146a32faf45815cb7aa2e0a3ec

    SHA256

    bacfd4551eb96cd6a853ee55f7e1839fdffedf1309d00932f603d214bc4798fb

    SHA512

    f5bb7b412ddb826d262b784d9538c2ea30d217e1d23691176c53735021ada2fec13f2559ecfa6096ae4860e004211897dc0c69b9b04a5451d2e3feb6bec80215

  • memory/1184-10-0x0000000074E00000-0x00000000755B1000-memory.dmp

    Filesize

    7.7MB

  • memory/1184-16-0x0000000074E00000-0x00000000755B1000-memory.dmp

    Filesize

    7.7MB

  • memory/1184-15-0x0000000074E00000-0x00000000755B1000-memory.dmp

    Filesize

    7.7MB

  • memory/1184-14-0x00000000074C0000-0x00000000074CA000-memory.dmp

    Filesize

    40KB

  • memory/1184-12-0x0000000005E00000-0x0000000005E3C000-memory.dmp

    Filesize

    240KB

  • memory/1184-11-0x0000000005740000-0x0000000005752000-memory.dmp

    Filesize

    72KB

  • memory/1184-8-0x0000000074E00000-0x00000000755B1000-memory.dmp

    Filesize

    7.7MB

  • memory/2288-3-0x0000000004FE0000-0x0000000005046000-memory.dmp

    Filesize

    408KB

  • memory/2288-9-0x0000000074E00000-0x00000000755B1000-memory.dmp

    Filesize

    7.7MB

  • memory/2288-6-0x0000000005720000-0x00000000057B2000-memory.dmp

    Filesize

    584KB

  • memory/2288-4-0x0000000005BF0000-0x0000000006196000-memory.dmp

    Filesize

    5.6MB

  • memory/2288-0-0x0000000074E0E000-0x0000000074E0F000-memory.dmp

    Filesize

    4KB

  • memory/2288-2-0x0000000074E00000-0x00000000755B1000-memory.dmp

    Filesize

    7.7MB

  • memory/2288-1-0x00000000005D0000-0x000000000062A000-memory.dmp

    Filesize

    360KB