Analysis

  • max time kernel
    47s
  • max time network
    70s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-06-2024 04:57

General

  • Target

    0ca81a3bec58298a318d19bdf208cb99_JaffaCakes118.exe

  • Size

    4.2MB

  • MD5

    0ca81a3bec58298a318d19bdf208cb99

  • SHA1

    cec944263887c4e3ac2956f2a27cbc9be86591d6

  • SHA256

    ffe3d6f61150e4a25a4e9549252dc1a505bfd2247f7d3aacec825e1787f089ea

  • SHA512

    eda9f6e37ea306e38fa5cdaf5c036782dab19a8dca628af63adb959d75579d014fd17bce5f4e9b5c7c6b24cea2cbaf95fbe849fe93b3e5faa87dbf69bdea1940

  • SSDEEP

    12288:yeASxuABkJro+1xtmnzHurEuXu4EnWu5uQpNsuiJoXO1+iy1Qq8a+jI3TiVYzfTF:v

Malware Config

Extracted

Family

quasar

Version

2.1.0.0

Botnet

Skidy

C2

roasted-flag.auto.playit.gg:51952

Mutex

VNM_MUTEX_bsVy5mHRmaFZMQOLbI

Attributes
  • encryption_key

    ux20jjbixeS7PecgmZeq

  • install_name

    windows.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    windows

  • subdirectory

    $windows

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 4 IoCs
  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 1 IoCs
  • VenomRAT

    VenomRAT is a modified version of QuasarRAT with some added features, such as rootkit and stealer capabilites.

  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 2 IoCs
  • Windows security modification 2 TTPs 2 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 NtSetInformationThreadHideFromDebugger 25 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 2 IoCs
  • Delays execution with timeout.exe 2 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 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 37 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0ca81a3bec58298a318d19bdf208cb99_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\0ca81a3bec58298a318d19bdf208cb99_JaffaCakes118.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3640
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout 1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4572
      • C:\Windows\SysWOW64\timeout.exe
        timeout 1
        3⤵
        • Delays execution with timeout.exe
        PID:5072
    • C:\Users\Admin\AppData\Local\Temp\0ca81a3bec58298a318d19bdf208cb99_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\0ca81a3bec58298a318d19bdf208cb99_JaffaCakes118.exe"
      2⤵
      • Modifies Windows Defender Real-time Protection settings
      • Windows security modification
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1004
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks" /create /tn "windows" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\0ca81a3bec58298a318d19bdf208cb99_JaffaCakes118.exe" /rl HIGHEST /f
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:5016
      • C:\Users\Admin\AppData\Roaming\$windows\windows.exe
        "C:\Users\Admin\AppData\Roaming\$windows\windows.exe"
        3⤵
        • Checks computer location settings
        • Executes dropped EXE
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3520
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c timeout 1
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:4072
          • C:\Windows\SysWOW64\timeout.exe
            timeout 1
            5⤵
            • Delays execution with timeout.exe
            PID:1168
        • C:\Users\Admin\AppData\Roaming\$windows\windows.exe
          "C:\Users\Admin\AppData\Roaming\$windows\windows.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          PID:2740
          • C:\Windows\SysWOW64\schtasks.exe
            "schtasks" /create /tn "windows" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\$windows\windows.exe" /rl HIGHEST /f
            5⤵
            • Scheduled Task/Job: Scheduled Task
            PID:1552
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\Sn3vn3bf0F8l.bat" "
            5⤵
              PID:4560
              • C:\Windows\SysWOW64\chcp.com
                chcp 65001
                6⤵
                  PID:4496
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 3520 -s 1500
              4⤵
              • Program crash
              PID:756
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "powershell" Get-MpPreference -verbose
            3⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1772
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3640 -s 1048
          2⤵
          • Program crash
          PID:2504
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 3640 -ip 3640
        1⤵
          PID:556
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 3520 -ip 3520
          1⤵
            PID:1804
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3804 --field-trial-handle=2264,i,15001568551143786084,90255922961447677,262144 --variations-seed-version /prefetch:8
            1⤵
              PID:4832

            Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            • C:\Users\Admin\AppData\Local\Temp\Sn3vn3bf0F8l.bat

              Filesize

              210B

              MD5

              cf4bffa0b89a6cd8bc3b3db1f13ea623

              SHA1

              e6d7324aaffc7c28ad1a2f4c0e9603360340800b

              SHA256

              00aa48b7d243ce41e463dd64040b34c147f245c0e34fec8fb5a1d41ee74718d5

              SHA512

              09c99e6d9da1d408699f38423bbc8f23f4e12748e812bac5d1346cfdfa8f537c05c637cccc242bc135ef2303484994ddc43fc8bf0d705a840a30c203787f95dc

            • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ibico2kt.dvb.ps1

              Filesize

              60B

              MD5

              d17fe0a3f47be24a6453e9ef58c94641

              SHA1

              6ab83620379fc69f80c0242105ddffd7d98d5d9d

              SHA256

              96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

              SHA512

              5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

            • C:\Users\Admin\AppData\Roaming\$windows\windows.exe

              Filesize

              4.2MB

              MD5

              0ca81a3bec58298a318d19bdf208cb99

              SHA1

              cec944263887c4e3ac2956f2a27cbc9be86591d6

              SHA256

              ffe3d6f61150e4a25a4e9549252dc1a505bfd2247f7d3aacec825e1787f089ea

              SHA512

              eda9f6e37ea306e38fa5cdaf5c036782dab19a8dca628af63adb959d75579d014fd17bce5f4e9b5c7c6b24cea2cbaf95fbe849fe93b3e5faa87dbf69bdea1940

            • memory/1004-12-0x00000000069C0000-0x00000000069D2000-memory.dmp

              Filesize

              72KB

            • memory/1004-10-0x0000000075290000-0x0000000075A40000-memory.dmp

              Filesize

              7.7MB

            • memory/1004-13-0x0000000006F40000-0x0000000006F7C000-memory.dmp

              Filesize

              240KB

            • memory/1004-6-0x0000000000400000-0x000000000048C000-memory.dmp

              Filesize

              560KB

            • memory/1004-7-0x0000000075290000-0x0000000075A40000-memory.dmp

              Filesize

              7.7MB

            • memory/1004-8-0x0000000005A40000-0x0000000005AD2000-memory.dmp

              Filesize

              584KB

            • memory/1004-11-0x0000000005B50000-0x0000000005BB6000-memory.dmp

              Filesize

              408KB

            • memory/1772-21-0x0000000005060000-0x0000000005688000-memory.dmp

              Filesize

              6.2MB

            • memory/1772-36-0x0000000005F40000-0x0000000005F5E000-memory.dmp

              Filesize

              120KB

            • memory/1772-35-0x0000000005A30000-0x0000000005D84000-memory.dmp

              Filesize

              3.3MB

            • memory/1772-38-0x0000000005F80000-0x0000000005FCC000-memory.dmp

              Filesize

              304KB

            • memory/1772-25-0x0000000004F90000-0x0000000004FF6000-memory.dmp

              Filesize

              408KB

            • memory/1772-19-0x00000000048E0000-0x0000000004916000-memory.dmp

              Filesize

              216KB

            • memory/1772-24-0x0000000004EF0000-0x0000000004F12000-memory.dmp

              Filesize

              136KB

            • memory/3640-9-0x000000007529E000-0x000000007529F000-memory.dmp

              Filesize

              4KB

            • memory/3640-20-0x0000000075290000-0x0000000075A40000-memory.dmp

              Filesize

              7.7MB

            • memory/3640-3-0x0000000002AA0000-0x0000000002B3E000-memory.dmp

              Filesize

              632KB

            • memory/3640-2-0x0000000005080000-0x000000000511C000-memory.dmp

              Filesize

              624KB

            • memory/3640-0-0x000000007529E000-0x000000007529F000-memory.dmp

              Filesize

              4KB

            • memory/3640-4-0x0000000075290000-0x0000000075A40000-memory.dmp

              Filesize

              7.7MB

            • memory/3640-5-0x0000000009520000-0x0000000009AC4000-memory.dmp

              Filesize

              5.6MB

            • memory/3640-1-0x00000000002A0000-0x00000000006CC000-memory.dmp

              Filesize

              4.2MB