Analysis

  • max time kernel
    38s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20-04-2024 21:33

General

  • Target

    b27a303d6c162c5624d1b2bc527e5dd6b74954b9ba6f48074f0e88f5dcc59b81.exe

  • Size

    4.2MB

  • MD5

    5baacf7daa5badcc4797e877e7f0d261

  • SHA1

    e7129048ed96fc80442039a227b62b6b80a5d2c6

  • SHA256

    b27a303d6c162c5624d1b2bc527e5dd6b74954b9ba6f48074f0e88f5dcc59b81

  • SHA512

    251ed23f92471c7bda58bdd7442cee003fcdbc6773f6c951194e0df4f4ecfcef4819c0d0c036e7c0c0bfc2cedcb7517ecbe7b106aa5a5ca42b2c35edd370c332

  • SSDEEP

    98304:6B6TE4JDSTIitXqfSjBwF+v4rSSNjcdSqGUwT7RQU7ON:HTFmTI8qKjKFA4r+dAh7RQUA

Malware Config

Signatures

  • Glupteba

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

  • Glupteba payload 8 IoCs
  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Executes dropped EXE 2 IoCs
  • 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 7 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 2 IoCs
  • 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 54 IoCs
  • Suspicious use of AdjustPrivilegeToken 10 IoCs
  • Suspicious use of WriteProcessMemory 30 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\b27a303d6c162c5624d1b2bc527e5dd6b74954b9ba6f48074f0e88f5dcc59b81.exe
    "C:\Users\Admin\AppData\Local\Temp\b27a303d6c162c5624d1b2bc527e5dd6b74954b9ba6f48074f0e88f5dcc59b81.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3440
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1280
    • C:\Users\Admin\AppData\Local\Temp\b27a303d6c162c5624d1b2bc527e5dd6b74954b9ba6f48074f0e88f5dcc59b81.exe
      "C:\Users\Admin\AppData\Local\Temp\b27a303d6c162c5624d1b2bc527e5dd6b74954b9ba6f48074f0e88f5dcc59b81.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:1392
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        powershell -nologo -noprofile
        3⤵
        • Drops file in System32 directory
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4104
      • 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:3056
        • 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:1104
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        powershell -nologo -noprofile
        3⤵
        • Drops file in System32 directory
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:376
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        powershell -nologo -noprofile
        3⤵
        • Drops file in System32 directory
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:388
      • C:\Windows\rss\csrss.exe
        C:\Windows\rss\csrss.exe
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Manipulates WinMonFS driver.
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2012
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell -nologo -noprofile
          4⤵
          • Drops file in System32 directory
          • Modifies data under HKEY_USERS
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:3180
        • 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:4624
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:708
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            powershell -nologo -noprofile
            4⤵
            • Drops file in System32 directory
            • Modifies data under HKEY_USERS
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:832
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            powershell -nologo -noprofile
            4⤵
            • Drops file in System32 directory
            • Modifies data under HKEY_USERS
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:2588
          • 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:4364
          • 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:5064

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_jnegtdei.kuy.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

      968cb9309758126772781b83adb8a28f

      SHA1

      8da30e71accf186b2ba11da1797cf67f8f78b47c

      SHA256

      92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

      SHA512

      4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

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

      Filesize

      19KB

      MD5

      1e0712340511abd598c782ee16359ba2

      SHA1

      027ba2c987375ee99bc08663573ad1a7730fb0d7

      SHA256

      442d4b056d0921d59e2da9b946716ce6cfb306eb5662034dd93066f3f729f4a3

      SHA512

      57f81a90a76f26a5da70d88af839093a508eafcd12aed1be14c95cfd9be19f91be52e76718a50413a4df7bf1924ba39a4340c0b45f113f164ef122ce2eaa8dc7

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

      Filesize

      19KB

      MD5

      449552f9ae311ac072081af9e768f5f1

      SHA1

      2daa1948a901e827aa0b35e10b632caafd476da5

      SHA256

      11dfe2e75c827a060284b3566a072dd68e694681e3ab3a1567a392d2feca82d1

      SHA512

      70966285bdaaa653999673ad2062fadc1c21ace96476ea55a04d6a663f122b81bd33993d55f6c6ec0ee4e46ed816916b7b0d07be3f8215824a46b87d9ff9534a

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

      Filesize

      19KB

      MD5

      3bca0993068ec55eb8c0d59f2b515497

      SHA1

      07bb73def86abf73f1f549bf4bd2d98a53902ea9

      SHA256

      8e0a0663dd6e7e71e3d5f8605d42b38fedee143ea194dd3321c62892e22d4d97

      SHA512

      9fbfa47de1233f63adf0aeae4c7e0fdb18e8cc5143953fdd9bd141bce2571089454cf0225458226c6f83dd8f925f4c0737885e258a90da2a1ec05300420b140e

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

      Filesize

      19KB

      MD5

      54d05ad6d08323e685cd05aaa63d3852

      SHA1

      e15a9244e9828bb5532c788bd5de9cb30b078078

      SHA256

      d53f26b9fc5da29d7d7548a43633e4bbfcf4418b3b400d5ec459dea7a0377466

      SHA512

      887da591a2be2d20ffdf22e286e7e45620817972d91626c14777969828461aed15bd52105ccc37534df224ea7faa4da7a1b8c89b806b9a8fb3993139b8a5c10c

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

      Filesize

      19KB

      MD5

      a6ec7bab8537781c9a3def7607bf2f21

      SHA1

      754d1dda4ee29e13e67a314b20011a30ec7c5734

      SHA256

      6b62acd2024062b1a4a4aa18a58a87ece32f9bab701e17f2cfef7b1b5423fac0

      SHA512

      3697aff8f2f17de92f1abab249e792d80e113b6ff055e47b7862b21ce13862270d7ef8b2814ca480b1d2773e10aeb6707e19c3aed67061d845494ce7b6861f2e

    • C:\Windows\rss\csrss.exe

      Filesize

      4.2MB

      MD5

      5baacf7daa5badcc4797e877e7f0d261

      SHA1

      e7129048ed96fc80442039a227b62b6b80a5d2c6

      SHA256

      b27a303d6c162c5624d1b2bc527e5dd6b74954b9ba6f48074f0e88f5dcc59b81

      SHA512

      251ed23f92471c7bda58bdd7442cee003fcdbc6773f6c951194e0df4f4ecfcef4819c0d0c036e7c0c0bfc2cedcb7517ecbe7b106aa5a5ca42b2c35edd370c332

    • memory/376-108-0x0000000070CA0000-0x0000000070FF4000-memory.dmp

      Filesize

      3.3MB

    • memory/376-122-0x0000000074C80000-0x0000000075430000-memory.dmp

      Filesize

      7.7MB

    • memory/376-120-0x0000000005110000-0x0000000005120000-memory.dmp

      Filesize

      64KB

    • memory/376-119-0x0000000005110000-0x0000000005120000-memory.dmp

      Filesize

      64KB

    • memory/376-106-0x000000007F520000-0x000000007F530000-memory.dmp

      Filesize

      64KB

    • memory/376-107-0x0000000070B20000-0x0000000070B6C000-memory.dmp

      Filesize

      304KB

    • memory/376-95-0x0000000005110000-0x0000000005120000-memory.dmp

      Filesize

      64KB

    • memory/376-93-0x0000000074C80000-0x0000000075430000-memory.dmp

      Filesize

      7.7MB

    • memory/376-94-0x0000000005110000-0x0000000005120000-memory.dmp

      Filesize

      64KB

    • memory/388-123-0x0000000074C80000-0x0000000075430000-memory.dmp

      Filesize

      7.7MB

    • memory/388-124-0x0000000002F70000-0x0000000002F80000-memory.dmp

      Filesize

      64KB

    • memory/388-136-0x000000007F1F0000-0x000000007F200000-memory.dmp

      Filesize

      64KB

    • memory/388-137-0x0000000070B20000-0x0000000070B6C000-memory.dmp

      Filesize

      304KB

    • memory/1280-27-0x0000000007D10000-0x0000000007D2A000-memory.dmp

      Filesize

      104KB

    • memory/1280-6-0x0000000003360000-0x0000000003370000-memory.dmp

      Filesize

      64KB

    • memory/1280-42-0x0000000003360000-0x0000000003370000-memory.dmp

      Filesize

      64KB

    • memory/1280-43-0x0000000007F30000-0x0000000007FD3000-memory.dmp

      Filesize

      652KB

    • memory/1280-44-0x0000000008020000-0x000000000802A000-memory.dmp

      Filesize

      40KB

    • memory/1280-45-0x00000000080E0000-0x0000000008176000-memory.dmp

      Filesize

      600KB

    • memory/1280-46-0x0000000008040000-0x0000000008051000-memory.dmp

      Filesize

      68KB

    • memory/1280-47-0x0000000008080000-0x000000000808E000-memory.dmp

      Filesize

      56KB

    • memory/1280-48-0x0000000008090000-0x00000000080A4000-memory.dmp

      Filesize

      80KB

    • memory/1280-49-0x0000000008180000-0x000000000819A000-memory.dmp

      Filesize

      104KB

    • memory/1280-50-0x00000000080D0000-0x00000000080D8000-memory.dmp

      Filesize

      32KB

    • memory/1280-53-0x0000000074C80000-0x0000000075430000-memory.dmp

      Filesize

      7.7MB

    • memory/1280-4-0x0000000074C80000-0x0000000075430000-memory.dmp

      Filesize

      7.7MB

    • memory/1280-5-0x0000000003370000-0x00000000033A6000-memory.dmp

      Filesize

      216KB

    • memory/1280-41-0x0000000007F10000-0x0000000007F2E000-memory.dmp

      Filesize

      120KB

    • memory/1280-29-0x0000000007ED0000-0x0000000007F02000-memory.dmp

      Filesize

      200KB

    • memory/1280-7-0x0000000003360000-0x0000000003370000-memory.dmp

      Filesize

      64KB

    • memory/1280-8-0x0000000005A40000-0x0000000006068000-memory.dmp

      Filesize

      6.2MB

    • memory/1280-9-0x0000000005970000-0x0000000005992000-memory.dmp

      Filesize

      136KB

    • memory/1280-10-0x0000000006070000-0x00000000060D6000-memory.dmp

      Filesize

      408KB

    • memory/1280-16-0x00000000062D0000-0x0000000006336000-memory.dmp

      Filesize

      408KB

    • memory/1280-21-0x0000000006340000-0x0000000006694000-memory.dmp

      Filesize

      3.3MB

    • memory/1280-22-0x0000000006960000-0x000000000697E000-memory.dmp

      Filesize

      120KB

    • memory/1280-23-0x00000000069A0000-0x00000000069EC000-memory.dmp

      Filesize

      304KB

    • memory/1280-24-0x0000000006EC0000-0x0000000006F04000-memory.dmp

      Filesize

      272KB

    • memory/1280-25-0x0000000007C70000-0x0000000007CE6000-memory.dmp

      Filesize

      472KB

    • memory/1280-26-0x0000000008370000-0x00000000089EA000-memory.dmp

      Filesize

      6.5MB

    • memory/1280-28-0x000000007F4F0000-0x000000007F500000-memory.dmp

      Filesize

      64KB

    • memory/1280-31-0x0000000070CA0000-0x0000000070FF4000-memory.dmp

      Filesize

      3.3MB

    • memory/1280-30-0x0000000070B20000-0x0000000070B6C000-memory.dmp

      Filesize

      304KB

    • memory/1392-57-0x0000000004010000-0x00000000048FB000-memory.dmp

      Filesize

      8.9MB

    • memory/1392-118-0x0000000003C10000-0x000000000400D000-memory.dmp

      Filesize

      4.0MB

    • memory/1392-56-0x0000000003C10000-0x000000000400D000-memory.dmp

      Filesize

      4.0MB

    • memory/1392-155-0x0000000000400000-0x0000000001DF9000-memory.dmp

      Filesize

      26.0MB

    • memory/1392-58-0x0000000000400000-0x0000000001DF9000-memory.dmp

      Filesize

      26.0MB

    • memory/1392-135-0x0000000000400000-0x0000000001DF9000-memory.dmp

      Filesize

      26.0MB

    • memory/2012-251-0x0000000000400000-0x0000000001DF9000-memory.dmp

      Filesize

      26.0MB

    • memory/3440-71-0x0000000000400000-0x0000000001DF9000-memory.dmp

      Filesize

      26.0MB

    • memory/3440-55-0x0000000003D10000-0x000000000410A000-memory.dmp

      Filesize

      4.0MB

    • memory/3440-2-0x0000000004110000-0x00000000049FB000-memory.dmp

      Filesize

      8.9MB

    • memory/3440-1-0x0000000003D10000-0x000000000410A000-memory.dmp

      Filesize

      4.0MB

    • memory/3440-3-0x0000000000400000-0x0000000001DF9000-memory.dmp

      Filesize

      26.0MB

    • memory/4104-60-0x00000000027A0000-0x00000000027B0000-memory.dmp

      Filesize

      64KB

    • memory/4104-86-0x00000000027A0000-0x00000000027B0000-memory.dmp

      Filesize

      64KB

    • memory/4104-84-0x0000000006F10000-0x0000000006FB3000-memory.dmp

      Filesize

      652KB

    • memory/4104-59-0x0000000074C80000-0x0000000075430000-memory.dmp

      Filesize

      7.7MB

    • memory/4104-85-0x000000007F470000-0x000000007F480000-memory.dmp

      Filesize

      64KB

    • memory/4104-87-0x0000000007240000-0x0000000007251000-memory.dmp

      Filesize

      68KB

    • memory/4104-88-0x0000000007290000-0x00000000072A4000-memory.dmp

      Filesize

      80KB

    • memory/4104-61-0x00000000056D0000-0x0000000005A24000-memory.dmp

      Filesize

      3.3MB

    • memory/4104-91-0x0000000074C80000-0x0000000075430000-memory.dmp

      Filesize

      7.7MB

    • memory/4104-74-0x00000000712A0000-0x00000000715F4000-memory.dmp

      Filesize

      3.3MB

    • memory/4104-73-0x0000000070B20000-0x0000000070B6C000-memory.dmp

      Filesize

      304KB