Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240426-en
  • resource tags

    arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    16/05/2024, 19:32

General

  • Target

    cfbc7e9c8199fe3482305bbcafc80e076aa84c81e900d6305a8595651edd8c8f.exe

  • Size

    4.1MB

  • MD5

    afaa5225d213cb99063a5abbe26f6b1a

  • SHA1

    9b6339355b406f945214db35840da8211490b78d

  • SHA256

    cfbc7e9c8199fe3482305bbcafc80e076aa84c81e900d6305a8595651edd8c8f

  • SHA512

    df4c03f5318efbdefe8d900795477fd30315ca597d3afe6778777fd8b3667e49abd8280c89db79d52e342ef4900b80f2c138deb8e53dbcd811d60414abbf211f

  • SSDEEP

    98304:vjrHiscAnk4Z0f7mBZCfuP+pmwVLETOu5PKDHvrjVgO2D:7rhn/yCBZkM+pB3dzS

Malware Config

Signatures

  • Glupteba

    Glupteba is a modular loader written in Golang with various components.

  • Glupteba payload 18 IoCs
  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Executes dropped EXE 4 IoCs
  • UPX packed file 6 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Manipulates WinMonFS driver. 1 IoCs

    Roottkits write to WinMonFS to hide directories/files from being detected.

  • Drops file in System32 directory 6 IoCs
  • Checks for VirtualBox DLLs, possible anti-VM trick 1 TTPs 1 IoCs

    Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.

  • Drops file in Windows directory 4 IoCs
  • Launches sc.exe 1 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 7 IoCs

    Using powershell.exe command.

  • Creates scheduled task(s) 1 TTPs 2 IoCs

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

  • Modifies data under HKEY_USERS 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 11 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\cfbc7e9c8199fe3482305bbcafc80e076aa84c81e900d6305a8595651edd8c8f.exe
    "C:\Users\Admin\AppData\Local\Temp\cfbc7e9c8199fe3482305bbcafc80e076aa84c81e900d6305a8595651edd8c8f.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4652
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1248
    • C:\Users\Admin\AppData\Local\Temp\cfbc7e9c8199fe3482305bbcafc80e076aa84c81e900d6305a8595651edd8c8f.exe
      "C:\Users\Admin\AppData\Local\Temp\cfbc7e9c8199fe3482305bbcafc80e076aa84c81e900d6305a8595651edd8c8f.exe"
      2⤵
      • Adds Run key to start application
      • Checks for VirtualBox DLLs, possible anti-VM trick
      • Drops file in Windows directory
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2140
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        powershell -nologo -noprofile
        3⤵
        • Drops file in System32 directory
        • Command and Scripting Interpreter: PowerShell
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1432
      • C:\Windows\system32\cmd.exe
        C:\Windows\Sysnative\cmd.exe /C "netsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1240
        • C:\Windows\system32\netsh.exe
          netsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes
          4⤵
          • Modifies Windows Firewall
          PID:412
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        powershell -nologo -noprofile
        3⤵
        • Drops file in System32 directory
        • Command and Scripting Interpreter: PowerShell
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2472
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        powershell -nologo -noprofile
        3⤵
        • Drops file in System32 directory
        • Command and Scripting Interpreter: PowerShell
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:5112
      • C:\Windows\rss\csrss.exe
        C:\Windows\rss\csrss.exe
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Manipulates WinMonFS driver.
        • Drops file in Windows directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4960
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell -nologo -noprofile
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Modifies data under HKEY_USERS
          PID:4572
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F
          4⤵
          • Creates scheduled task(s)
          PID:844
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:740
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            powershell -nologo -noprofile
            4⤵
            • Drops file in System32 directory
            • Command and Scripting Interpreter: PowerShell
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:4284
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            powershell -nologo -noprofile
            4⤵
            • Drops file in System32 directory
            • Command and Scripting Interpreter: PowerShell
            • Modifies data under HKEY_USERS
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:2000
          • C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe
            C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe taskmgr.exe C:\Users\Admin\AppData\Local\Temp\csrss\injector\NtQuerySystemInformationHook.dll
            4⤵
            • Executes dropped EXE
            • Suspicious behavior: EnumeratesProcesses
            PID:2540
          • C:\Windows\SYSTEM32\schtasks.exe
            schtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F
            4⤵
            • Creates scheduled task(s)
            PID:3800
          • C:\Windows\windefender.exe
            "C:\Windows\windefender.exe"
            4⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:1432
            • C:\Windows\SysWOW64\cmd.exe
              cmd.exe /C sc sdset WinDefender D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPLOCRSDRCWDWO;;;BA)(D;;WPDT;;;BA)(A;;CCLCSWLOCRRC;;;IU)(A;;CCLCSWLOCRRC;;;SU)S:(AU;FA;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;WD)
              5⤵
              • Suspicious use of WriteProcessMemory
              PID:2492
              • C:\Windows\SysWOW64\sc.exe
                sc sdset WinDefender D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPLOCRSDRCWDWO;;;BA)(D;;WPDT;;;BA)(A;;CCLCSWLOCRRC;;;IU)(A;;CCLCSWLOCRRC;;;SU)S:(AU;FA;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;WD)
                6⤵
                • Launches sc.exe
                • Suspicious use of AdjustPrivilegeToken
                PID:4836
    • C:\Windows\windefender.exe
      C:\Windows\windefender.exe
      1⤵
      • Executes dropped EXE
      • Modifies data under HKEY_USERS
      PID:4848

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_zckwecex.p2g.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe

      Filesize

      281KB

      MD5

      d98e33b66343e7c96158444127a117f6

      SHA1

      bb716c5509a2bf345c6c1152f6e3e1452d39d50d

      SHA256

      5de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1

      SHA512

      705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5

    • C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

      Filesize

      2KB

      MD5

      ac4917a885cf6050b1a483e4bc4d2ea5

      SHA1

      b1c0a9f27bd21c6bbb8e9be70db8777b4a2a640f

      SHA256

      e39062a62c3c7617feeeff95ea8a0be51104a0d36f46e44eea22556fda74d8d9

      SHA512

      092c67a3ecae1d187cad72a8ea1ea37cb78a0cf79c2cd7fb88953e5990669a2e871267015762fd46d274badb88ac0c1d73b00f1df7394d89bed48a3a45c2ba3d

    • C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive

      Filesize

      19KB

      MD5

      46355b11766bcc6015edd7ec18479905

      SHA1

      cf62bd774e64e0a3c278f7baaa2bc0c052bf5754

      SHA256

      30d20ea735fdeeba882e11e123c1e7481bb93b8ef0666194d07e8e0003b9e118

      SHA512

      90b14b4897899361ef891272d6446b2aad1e4930ffc86babf5385f6fb0d2fce1c398e856e623b958566e412577b6960fcae24b95b734e05e7bf33df350ebf41e

    • C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive

      Filesize

      19KB

      MD5

      589bcd45fa96f483b59a59bcd88bc843

      SHA1

      d8b03331827c2939a92c79d0f38f641021d4c396

      SHA256

      1f5e6784e4e004d1d7861e2bd728b4520ebb022291bd97ca099547e83104761b

      SHA512

      3c04cb9d957b65cabf39a4c6c98885ae0e00fef11955b190e34f98a5c912ff6a1f64e352328b3096657fc0b26dd1c514ef05632b8c22d29fe7c0e1682276757d

    • C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive

      Filesize

      19KB

      MD5

      86a1f9f9620669c8eac5100624cd757c

      SHA1

      5fc4df4551eb0b08356e31accc9edebc802b4c5e

      SHA256

      c3a680c77264026d73eef78bc0a9dd7e55f1313d3f2a7aa2615ba44ad0fedabc

      SHA512

      062a99eb234a88e249e46d47bc65d5f5a4a543f3b7cf3ab8a3fe745fba280e104b14a972187518b11fca484e28e02f99e8b05883a13247c7b7c60682adcdb41b

    • C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive

      Filesize

      19KB

      MD5

      d31c4c89ffcb64b2dd638df853c47682

      SHA1

      485ae5ac89cc1992460b32d6e55316f3267c4cfb

      SHA256

      32e9634894935331c8e9454a55b334bad89ec61104cb986517f22206ea939aa8

      SHA512

      a8c111fef038cebf51b586d7c4eaf8a9996c0e4ab10ba86f9061526786ba4c763f7a23039b796132e1b05c696de206375b7f5419100f75f86f4efb4920228a71

    • C:\Windows\rss\csrss.exe

      Filesize

      4.1MB

      MD5

      afaa5225d213cb99063a5abbe26f6b1a

      SHA1

      9b6339355b406f945214db35840da8211490b78d

      SHA256

      cfbc7e9c8199fe3482305bbcafc80e076aa84c81e900d6305a8595651edd8c8f

      SHA512

      df4c03f5318efbdefe8d900795477fd30315ca597d3afe6778777fd8b3667e49abd8280c89db79d52e342ef4900b80f2c138deb8e53dbcd811d60414abbf211f

    • C:\Windows\windefender.exe

      Filesize

      2.0MB

      MD5

      8e67f58837092385dcf01e8a2b4f5783

      SHA1

      012c49cfd8c5d06795a6f67ea2baf2a082cf8625

      SHA256

      166ddb03ff3c89bd4525ac390067e180fdd08f10fbcf4aadb0189541673c03fa

      SHA512

      40d8ae12663fc1851e171d9d86cea8bb12487b734c218d7b6f9742eb07d4ca265065cbd6d0bb908f8bda7e3d955c458dfe3fd13265bbf573b9351e0a2bf691ec

    • memory/1248-16-0x0000000074680000-0x0000000074E31000-memory.dmp

      Filesize

      7.7MB

    • memory/1248-44-0x0000000007A90000-0x0000000007A9E000-memory.dmp

      Filesize

      56KB

    • memory/1248-9-0x0000000005E60000-0x0000000005EC6000-memory.dmp

      Filesize

      408KB

    • memory/1248-20-0x0000000005F40000-0x0000000006297000-memory.dmp

      Filesize

      3.3MB

    • memory/1248-21-0x0000000006430000-0x000000000644E000-memory.dmp

      Filesize

      120KB

    • memory/1248-22-0x00000000064C0000-0x000000000650C000-memory.dmp

      Filesize

      304KB

    • memory/1248-23-0x0000000006990000-0x00000000069D6000-memory.dmp

      Filesize

      280KB

    • memory/1248-24-0x0000000007850000-0x0000000007884000-memory.dmp

      Filesize

      208KB

    • memory/1248-35-0x0000000007890000-0x00000000078AE000-memory.dmp

      Filesize

      120KB

    • memory/1248-25-0x00000000708F0000-0x000000007093C000-memory.dmp

      Filesize

      304KB

    • memory/1248-37-0x00000000078B0000-0x0000000007954000-memory.dmp

      Filesize

      656KB

    • memory/1248-36-0x0000000074680000-0x0000000074E31000-memory.dmp

      Filesize

      7.7MB

    • memory/1248-26-0x0000000070A80000-0x0000000070DD7000-memory.dmp

      Filesize

      3.3MB

    • memory/1248-38-0x0000000074680000-0x0000000074E31000-memory.dmp

      Filesize

      7.7MB

    • memory/1248-40-0x00000000079E0000-0x00000000079FA000-memory.dmp

      Filesize

      104KB

    • memory/1248-39-0x0000000008020000-0x000000000869A000-memory.dmp

      Filesize

      6.5MB

    • memory/1248-41-0x0000000007A20000-0x0000000007A2A000-memory.dmp

      Filesize

      40KB

    • memory/1248-42-0x0000000007B30000-0x0000000007BC6000-memory.dmp

      Filesize

      600KB

    • memory/1248-43-0x0000000007A40000-0x0000000007A51000-memory.dmp

      Filesize

      68KB

    • memory/1248-10-0x0000000005ED0000-0x0000000005F36000-memory.dmp

      Filesize

      408KB

    • memory/1248-45-0x0000000007AA0000-0x0000000007AB5000-memory.dmp

      Filesize

      84KB

    • memory/1248-46-0x0000000007AF0000-0x0000000007B0A000-memory.dmp

      Filesize

      104KB

    • memory/1248-47-0x0000000007B10000-0x0000000007B18000-memory.dmp

      Filesize

      32KB

    • memory/1248-50-0x0000000074680000-0x0000000074E31000-memory.dmp

      Filesize

      7.7MB

    • memory/1248-8-0x0000000005670000-0x0000000005692000-memory.dmp

      Filesize

      136KB

    • memory/1248-4-0x000000007468E000-0x000000007468F000-memory.dmp

      Filesize

      4KB

    • memory/1248-5-0x0000000002F40000-0x0000000002F76000-memory.dmp

      Filesize

      216KB

    • memory/1248-6-0x0000000005780000-0x0000000005DAA000-memory.dmp

      Filesize

      6.2MB

    • memory/1248-7-0x0000000074680000-0x0000000074E31000-memory.dmp

      Filesize

      7.7MB

    • memory/1432-73-0x00000000075C0000-0x00000000075D1000-memory.dmp

      Filesize

      68KB

    • memory/1432-74-0x0000000007610000-0x0000000007625000-memory.dmp

      Filesize

      84KB

    • memory/1432-72-0x00000000072A0000-0x0000000007344000-memory.dmp

      Filesize

      656KB

    • memory/1432-63-0x0000000070A70000-0x0000000070DC7000-memory.dmp

      Filesize

      3.3MB

    • memory/1432-62-0x00000000708F0000-0x000000007093C000-memory.dmp

      Filesize

      304KB

    • memory/1432-61-0x0000000005C10000-0x0000000005F67000-memory.dmp

      Filesize

      3.3MB

    • memory/1432-185-0x0000000000400000-0x00000000008DF000-memory.dmp

      Filesize

      4.9MB

    • memory/1432-190-0x0000000000400000-0x00000000008DF000-memory.dmp

      Filesize

      4.9MB

    • memory/2000-163-0x0000000070810000-0x000000007085C000-memory.dmp

      Filesize

      304KB

    • memory/2000-164-0x0000000070990000-0x0000000070CE7000-memory.dmp

      Filesize

      3.3MB

    • memory/2140-124-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/2140-52-0x0000000002A20000-0x0000000002E26000-memory.dmp

      Filesize

      4.0MB

    • memory/2472-87-0x00000000708F0000-0x000000007093C000-memory.dmp

      Filesize

      304KB

    • memory/2472-88-0x0000000070A70000-0x0000000070DC7000-memory.dmp

      Filesize

      3.3MB

    • memory/4284-151-0x0000000007100000-0x0000000007111000-memory.dmp

      Filesize

      68KB

    • memory/4284-137-0x0000000005740000-0x0000000005A97000-memory.dmp

      Filesize

      3.3MB

    • memory/4284-139-0x00000000060D0000-0x000000000611C000-memory.dmp

      Filesize

      304KB

    • memory/4284-140-0x0000000070810000-0x000000007085C000-memory.dmp

      Filesize

      304KB

    • memory/4284-141-0x0000000070990000-0x0000000070CE7000-memory.dmp

      Filesize

      3.3MB

    • memory/4284-150-0x0000000006DB0000-0x0000000006E54000-memory.dmp

      Filesize

      656KB

    • memory/4284-152-0x00000000054D0000-0x00000000054E5000-memory.dmp

      Filesize

      84KB

    • memory/4652-97-0x0000000002A30000-0x0000000002E34000-memory.dmp

      Filesize

      4.0MB

    • memory/4652-98-0x0000000002E40000-0x000000000372B000-memory.dmp

      Filesize

      8.9MB

    • memory/4652-3-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/4652-1-0x0000000002A30000-0x0000000002E34000-memory.dmp

      Filesize

      4.0MB

    • memory/4652-2-0x0000000002E40000-0x000000000372B000-memory.dmp

      Filesize

      8.9MB

    • memory/4652-99-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/4848-199-0x0000000000400000-0x00000000008DF000-memory.dmp

      Filesize

      4.9MB

    • memory/4848-188-0x0000000000400000-0x00000000008DF000-memory.dmp

      Filesize

      4.9MB

    • memory/4848-194-0x0000000000400000-0x00000000008DF000-memory.dmp

      Filesize

      4.9MB

    • memory/4960-209-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/4960-200-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/4960-191-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/4960-224-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/4960-193-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/4960-197-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/4960-221-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/4960-217-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/4960-203-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/4960-205-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/4960-180-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/4960-212-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/4960-214-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/5112-111-0x00000000708F0000-0x000000007093C000-memory.dmp

      Filesize

      304KB

    • memory/5112-109-0x0000000006300000-0x0000000006657000-memory.dmp

      Filesize

      3.3MB

    • memory/5112-112-0x0000000070B40000-0x0000000070E97000-memory.dmp

      Filesize

      3.3MB