Resubmissions

07/11/2024, 02:17

241107-cq8h5avrbq 10

06/11/2024, 22:40

241106-2llk8s1raj 10

Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/11/2024, 02:17

General

  • Target

    procesosCUI7254178000020150023000.exe

  • Size

    908KB

  • MD5

    e93703d8357807ba8be42ce5bd71d99b

  • SHA1

    f557b727748f4aa01265b2bc8e46b6201b5f3b7c

  • SHA256

    fa083a970c90e1e17f4aa83ccd7f0bf52b5e0f35eaf4eeda73abdc115d9b55b9

  • SHA512

    b8ad5c57586b70a769d1f9562148de63a3c5835d6a35d3302f33d4d20619254ae5ae6a1703fb26aaa574d96ba15b053359fe0b17059577256a86ebeb53a9b5af

  • SSDEEP

    24576:Fg/fK9XbMAWE9XEhG7q9efZyHS7en+gIlh:q4Mj4088HS7e+gIlh

Malware Config

Signatures

  • Contains code to disable Windows Defender 1 IoCs

    A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

  • Modifies Windows Defender Real-time Protection settings 3 TTPs 9 IoCs
  • Modifies security service 2 TTPs 4 IoCs
  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar family
  • Quasar payload 1 IoCs
  • UAC bypass 3 TTPs 6 IoCs
  • Windows security bypass 2 TTPs 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Windows security modification 2 TTPs 7 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Checks whether UAC is enabled 1 TTPs 4 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 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.

  • Modifies Security services 2 TTPs 16 IoCs

    Modifies the startup behavior of a security service.

  • Suspicious use of SetThreadContext 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 10 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies registry class 5 IoCs
  • 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 behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 9 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 37 IoCs
  • System policy modification 1 TTPs 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\procesosCUI7254178000020150023000.exe
    "C:\Users\Admin\AppData\Local\Temp\procesosCUI7254178000020150023000.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:512
    • C:\Users\Admin\AppData\Local\Temp\procesosCUI7254178000020150023000.exe
      "C:\Users\Admin\AppData\Local\Temp\procesosCUI7254178000020150023000.exe"
      2⤵
      • Modifies Windows Defender Real-time Protection settings
      • Modifies security service
      • UAC bypass
      • Windows security bypass
      • Windows security modification
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Modifies Security services
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:3348
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks" /create /tn "\Microsoft\Windows\System\Dev34\Files\iceTelemetryLogtte" /SC MINUTE /MO 3 /RL HIGHEST /tr "C:\Users\Admin\AppData\Local\Temp\procesosCUI7254178000020150023000.exe" /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:1548
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks" /delete /tn "iceTelemetryLogtte" /f
        3⤵
        • System Location Discovery: System Language Discovery
        PID:5068
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "powershell" Get-MpPreference -verbose
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4540
      • C:\Users\Admin\AppData\Roaming\GPret\Vespre.exe
        "C:\Users\Admin\AppData\Roaming\GPret\Vespre.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4372
        • C:\Users\Admin\AppData\Roaming\GPret\Vespre.exe
          "C:\Users\Admin\AppData\Roaming\GPret\Vespre.exe"
          4⤵
          • Modifies Windows Defender Real-time Protection settings
          • Modifies security service
          • UAC bypass
          • Windows security bypass
          • Executes dropped EXE
          • Windows security modification
          • Adds Run key to start application
          • Checks whether UAC is enabled
          • Modifies Security services
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          • System policy modification
          PID:1148
          • C:\Windows\SysWOW64\schtasks.exe
            "schtasks" /create /tn "\Microsoft\Windows\System\Dev34\Files\iceTelemetryLogtte" /SC MINUTE /MO 3 /RL HIGHEST /tr "C:\Users\Admin\AppData\Roaming\GPret\Vespre.exe" /f
            5⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:8
          • C:\Windows\SysWOW64\schtasks.exe
            "schtasks" /delete /tn "iceTelemetryLogtte" /f
            5⤵
            • System Location Discovery: System Language Discovery
            PID:960
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "powershell" Get-MpPreference -verbose
            5⤵
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:2508
  • C:\Windows\system32\taskmgr.exe
    "C:\Windows\system32\taskmgr.exe" /4
    1⤵
    • Checks SCSI registry key(s)
    • Checks processor information in registry
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:4020
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:5008

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

      Filesize

      2KB

      MD5

      968cb9309758126772781b83adb8a28f

      SHA1

      8da30e71accf186b2ba11da1797cf67f8f78b47c

      SHA256

      92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

      SHA512

      4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\procesosCUI7254178000020150023000.exe.log

      Filesize

      1KB

      MD5

      8ec831f3e3a3f77e4a7b9cd32b48384c

      SHA1

      d83f09fd87c5bd86e045873c231c14836e76a05c

      SHA256

      7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

      SHA512

      26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

      Filesize

      18KB

      MD5

      115adbca0fcdb70b054e0f37ea04afad

      SHA1

      c6d42a5c8e3087ed1c6c61d354ec318b75bb4cee

      SHA256

      fd3583cf198109974552ad22a4cd693f2bbe99a56128b927a0934bc09d7679d3

      SHA512

      de20e25514228a4bde73590279e568ad0f72bb30a560518a30a0d19d59144dab7bfa3f4aa1644bb55b48813d2f729e6884c7a7c8b76e5e333d5c42e8e2dbbf9d

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_aqvmxwfv.ugf.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Roaming\GPret\Vespre.exe

      Filesize

      908KB

      MD5

      e93703d8357807ba8be42ce5bd71d99b

      SHA1

      f557b727748f4aa01265b2bc8e46b6201b5f3b7c

      SHA256

      fa083a970c90e1e17f4aa83ccd7f0bf52b5e0f35eaf4eeda73abdc115d9b55b9

      SHA512

      b8ad5c57586b70a769d1f9562148de63a3c5835d6a35d3302f33d4d20619254ae5ae6a1703fb26aaa574d96ba15b053359fe0b17059577256a86ebeb53a9b5af

    • C:\Users\Admin\AppData\Roaming\GPret\settings.xml

      Filesize

      137B

      MD5

      e300bfd7654b37a40e3cdfcfc133925d

      SHA1

      8d6c642420b210bcd2b0ce56f0a6120253b2f48c

      SHA256

      9e454fe5db90a66baab1bb00fce530ce8ade3990b3bd9c18ba354c3223ed3e7a

      SHA512

      29343529bd003bbb35416b3df521d1b1ba604334981c6e8fca52390e71dd985fa4125f9ea8a63242710f792982d7b27b6f98a0cb009a065943a0e657df2f8483

    • memory/512-4-0x0000000005AC0000-0x0000000005ACA000-memory.dmp

      Filesize

      40KB

    • memory/512-7-0x0000000006EE0000-0x0000000006EFC000-memory.dmp

      Filesize

      112KB

    • memory/512-8-0x0000000074FBE000-0x0000000074FBF000-memory.dmp

      Filesize

      4KB

    • memory/512-9-0x0000000074FB0000-0x0000000075760000-memory.dmp

      Filesize

      7.7MB

    • memory/512-10-0x0000000003340000-0x00000000033DC000-memory.dmp

      Filesize

      624KB

    • memory/512-0-0x0000000074FBE000-0x0000000074FBF000-memory.dmp

      Filesize

      4KB

    • memory/512-6-0x0000000005DC0000-0x0000000005E5C000-memory.dmp

      Filesize

      624KB

    • memory/512-15-0x0000000074FB0000-0x0000000075760000-memory.dmp

      Filesize

      7.7MB

    • memory/512-5-0x0000000074FB0000-0x0000000075760000-memory.dmp

      Filesize

      7.7MB

    • memory/512-3-0x0000000005AE0000-0x0000000005B72000-memory.dmp

      Filesize

      584KB

    • memory/512-2-0x0000000006090000-0x0000000006634000-memory.dmp

      Filesize

      5.6MB

    • memory/512-1-0x0000000000FD0000-0x00000000010B8000-memory.dmp

      Filesize

      928KB

    • memory/2508-117-0x0000000007720000-0x00000000077C3000-memory.dmp

      Filesize

      652KB

    • memory/2508-119-0x00000000079F0000-0x0000000007A04000-memory.dmp

      Filesize

      80KB

    • memory/2508-118-0x00000000079B0000-0x00000000079C1000-memory.dmp

      Filesize

      68KB

    • memory/2508-107-0x00000000703D0000-0x000000007041C000-memory.dmp

      Filesize

      304KB

    • memory/2508-106-0x00000000069C0000-0x0000000006A0C000-memory.dmp

      Filesize

      304KB

    • memory/2508-100-0x0000000005E00000-0x0000000006154000-memory.dmp

      Filesize

      3.3MB

    • memory/3348-24-0x0000000006990000-0x00000000069CC000-memory.dmp

      Filesize

      240KB

    • memory/3348-23-0x0000000006930000-0x0000000006942000-memory.dmp

      Filesize

      72KB

    • memory/3348-22-0x0000000006640000-0x00000000066A6000-memory.dmp

      Filesize

      408KB

    • memory/3348-16-0x0000000074FB0000-0x0000000075760000-memory.dmp

      Filesize

      7.7MB

    • memory/3348-14-0x0000000074FB0000-0x0000000075760000-memory.dmp

      Filesize

      7.7MB

    • memory/3348-11-0x0000000000400000-0x000000000045C000-memory.dmp

      Filesize

      368KB

    • memory/3348-71-0x0000000074FB0000-0x0000000075760000-memory.dmp

      Filesize

      7.7MB

    • memory/4020-79-0x0000017CBD730000-0x0000017CBD731000-memory.dmp

      Filesize

      4KB

    • memory/4020-72-0x0000017CBD730000-0x0000017CBD731000-memory.dmp

      Filesize

      4KB

    • memory/4020-78-0x0000017CBD730000-0x0000017CBD731000-memory.dmp

      Filesize

      4KB

    • memory/4020-80-0x0000017CBD730000-0x0000017CBD731000-memory.dmp

      Filesize

      4KB

    • memory/4020-81-0x0000017CBD730000-0x0000017CBD731000-memory.dmp

      Filesize

      4KB

    • memory/4020-82-0x0000017CBD730000-0x0000017CBD731000-memory.dmp

      Filesize

      4KB

    • memory/4020-83-0x0000017CBD730000-0x0000017CBD731000-memory.dmp

      Filesize

      4KB

    • memory/4020-84-0x0000017CBD730000-0x0000017CBD731000-memory.dmp

      Filesize

      4KB

    • memory/4020-74-0x0000017CBD730000-0x0000017CBD731000-memory.dmp

      Filesize

      4KB

    • memory/4020-73-0x0000017CBD730000-0x0000017CBD731000-memory.dmp

      Filesize

      4KB

    • memory/4540-63-0x00000000075D0000-0x00000000075D8000-memory.dmp

      Filesize

      32KB

    • memory/4540-58-0x0000000007530000-0x00000000075C6000-memory.dmp

      Filesize

      600KB

    • memory/4540-55-0x00000000078F0000-0x0000000007F6A000-memory.dmp

      Filesize

      6.5MB

    • memory/4540-56-0x00000000072B0000-0x00000000072CA000-memory.dmp

      Filesize

      104KB

    • memory/4540-53-0x00000000065A0000-0x00000000065BE000-memory.dmp

      Filesize

      120KB

    • memory/4540-62-0x00000000075F0000-0x000000000760A000-memory.dmp

      Filesize

      104KB

    • memory/4540-61-0x00000000074F0000-0x0000000007504000-memory.dmp

      Filesize

      80KB

    • memory/4540-60-0x00000000074E0000-0x00000000074EE000-memory.dmp

      Filesize

      56KB

    • memory/4540-59-0x00000000074B0000-0x00000000074C1000-memory.dmp

      Filesize

      68KB

    • memory/4540-54-0x0000000006F80000-0x0000000007023000-memory.dmp

      Filesize

      652KB

    • memory/4540-57-0x0000000007320000-0x000000000732A000-memory.dmp

      Filesize

      40KB

    • memory/4540-43-0x00000000703A0000-0x00000000703EC000-memory.dmp

      Filesize

      304KB

    • memory/4540-42-0x0000000006560000-0x0000000006592000-memory.dmp

      Filesize

      200KB

    • memory/4540-41-0x0000000005FA0000-0x0000000005FEC000-memory.dmp

      Filesize

      304KB

    • memory/4540-40-0x0000000005F60000-0x0000000005F7E000-memory.dmp

      Filesize

      120KB

    • memory/4540-39-0x0000000005B90000-0x0000000005EE4000-memory.dmp

      Filesize

      3.3MB

    • memory/4540-29-0x0000000004F50000-0x0000000004FB6000-memory.dmp

      Filesize

      408KB

    • memory/4540-28-0x0000000004EB0000-0x0000000004ED2000-memory.dmp

      Filesize

      136KB

    • memory/4540-27-0x00000000051D0000-0x00000000057F8000-memory.dmp

      Filesize

      6.2MB

    • memory/4540-26-0x0000000002680000-0x00000000026B6000-memory.dmp

      Filesize

      216KB