Analysis

  • max time kernel
    149s
  • max time network
    125s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240419-en
  • resource tags

    arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    30-04-2024 20:03

General

  • Target

    94a8455662b5bb971838e98ddad5b3ca3145ae8e7fbb80fb7837047bfcebca89.exe

  • Size

    4.1MB

  • MD5

    52eb5a5dae741fc0d350c319390808e8

  • SHA1

    4437ef821f0b9775bea4854a332ea745205137e6

  • SHA256

    94a8455662b5bb971838e98ddad5b3ca3145ae8e7fbb80fb7837047bfcebca89

  • SHA512

    4aeadf5504c247b6048957b6ca54c5fa0d7ee9b42363154dac89c13239b764918aa653ed50215a1cc68655b54c7ac994fde26d96af8aad6adb9dbc22917ad796

  • SSDEEP

    98304:nZskg/H735lHbuysRFeUF6V6bbDBSxmwu3Rtil+D9:Zskkz/szhW63DBSERviUD9

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 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 64 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\94a8455662b5bb971838e98ddad5b3ca3145ae8e7fbb80fb7837047bfcebca89.exe
    "C:\Users\Admin\AppData\Local\Temp\94a8455662b5bb971838e98ddad5b3ca3145ae8e7fbb80fb7837047bfcebca89.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4080
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3660
    • C:\Users\Admin\AppData\Local\Temp\94a8455662b5bb971838e98ddad5b3ca3145ae8e7fbb80fb7837047bfcebca89.exe
      "C:\Users\Admin\AppData\Local\Temp\94a8455662b5bb971838e98ddad5b3ca3145ae8e7fbb80fb7837047bfcebca89.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:4964
      • 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:2188
      • 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:3480
        • 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:4108
      • 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:3048
      • 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:1676
      • 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:2624
        • 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:736
        • 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:4184
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:4464
          • 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:924
          • 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:2256
          • 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:4588
          • 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:1372

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_k3bfhoy4.s1c.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

      b5ea45c363629165353931e8f58342bb

      SHA1

      3fdc9be6a1a5449fbdd8e1b9e933c8a9d759a80b

      SHA256

      6efadf06e9f4b2bbd8afd4466ca882d740d3ddf09a7e1a5123cc4513afbcd544

      SHA512

      fd7aa8f55613c26ebda0fbfe2deffa2524b8e8ab07d6620aeea09bf4df24a97b3303425778abad7573f3a3f99d03ebead4a6320c816a972bea9093793e8394c9

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

      Filesize

      19KB

      MD5

      0ef098b40d98e67baa4d49a4d49b046f

      SHA1

      7f7fc5b24b4ab9cc02aec19ac3a18a8db8769a66

      SHA256

      1935bc50a4613791d86fda42b08a5d3c68234b8ab68dce177d8cf4b879f3c232

      SHA512

      96974075f5e0bea9b075cee944160f7ab0d0cfa1bbf876f29384fb61711a7deae797d4533b42add317f93e99bb067d8e2d4f88d04fab0fbb5e88cf384599a3c3

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

      Filesize

      19KB

      MD5

      9583c12105a62a1900268f301886f0b3

      SHA1

      96ba04d5b58cd9f742bedd3a58de00abc25bc236

      SHA256

      d244f0fdef2345913f31b917d9e10ccf0c7f4706f7ac49240eecabf96ad5e828

      SHA512

      50738c145cebba2d6c85c800837fd8fbfe5c44e378923e54d96e5f265062cd6045a18e79ec3dd2245459b6ccf5fd959dbf521ce5b5f81ba91ffe5e69cac3b8c9

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

      Filesize

      19KB

      MD5

      2055c63407a5ed28f673e9d3a2c4cddb

      SHA1

      6c6c390c3bf2964c17a047bf0c731ff8398b2745

      SHA256

      76ac6222ed037850124c86a25bf6901df6762247c6abc7232fe71be69fa08e39

      SHA512

      db277365b020e11d8c4df01ffa81e38f3a5db906c94361a982543099c1e1ac80878b7f748ef1b366a1e151fbce2d090127ed820ac9ae59ddba98ffb1de78632f

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

      Filesize

      19KB

      MD5

      f316a9c31ae2794d8251af1ebe00d107

      SHA1

      ead8bc8e9f61f38b415a1c1b8773663eb7222b08

      SHA256

      f7a6a776de96ee0013dbb5ae70cb98b4cfb0276e4b4d2d961232c7ae6387d035

      SHA512

      122881c6da9dbb04324d14ad1add0e4a679c6ae933704999a58100d2379550bdd8d3f74c9fb30655b237c97c65d5984c2465dad28f1bc8f02af0ae115cb6d526

    • C:\Windows\rss\csrss.exe

      Filesize

      4.1MB

      MD5

      52eb5a5dae741fc0d350c319390808e8

      SHA1

      4437ef821f0b9775bea4854a332ea745205137e6

      SHA256

      94a8455662b5bb971838e98ddad5b3ca3145ae8e7fbb80fb7837047bfcebca89

      SHA512

      4aeadf5504c247b6048957b6ca54c5fa0d7ee9b42363154dac89c13239b764918aa653ed50215a1cc68655b54c7ac994fde26d96af8aad6adb9dbc22917ad796

    • memory/736-138-0x0000000005F50000-0x00000000062A7000-memory.dmp

      Filesize

      3.3MB

    • memory/736-141-0x00000000705F0000-0x0000000070947000-memory.dmp

      Filesize

      3.3MB

    • memory/736-139-0x00000000062B0000-0x00000000062FC000-memory.dmp

      Filesize

      304KB

    • memory/736-152-0x0000000005D30000-0x0000000005D45000-memory.dmp

      Filesize

      84KB

    • memory/736-151-0x0000000005CF0000-0x0000000005D01000-memory.dmp

      Filesize

      68KB

    • memory/736-150-0x0000000007490000-0x0000000007534000-memory.dmp

      Filesize

      656KB

    • memory/736-140-0x0000000070470000-0x00000000704BC000-memory.dmp

      Filesize

      304KB

    • memory/924-166-0x0000000070390000-0x00000000703DC000-memory.dmp

      Filesize

      304KB

    • memory/924-165-0x0000000006150000-0x000000000619C000-memory.dmp

      Filesize

      304KB

    • memory/924-163-0x0000000005C50000-0x0000000005FA7000-memory.dmp

      Filesize

      3.3MB

    • memory/924-167-0x0000000070510000-0x0000000070867000-memory.dmp

      Filesize

      3.3MB

    • memory/924-176-0x0000000007350000-0x00000000073F4000-memory.dmp

      Filesize

      656KB

    • memory/924-177-0x00000000076F0000-0x0000000007701000-memory.dmp

      Filesize

      68KB

    • memory/924-178-0x0000000005B90000-0x0000000005BA5000-memory.dmp

      Filesize

      84KB

    • memory/1676-112-0x0000000070510000-0x000000007055C000-memory.dmp

      Filesize

      304KB

    • memory/1676-113-0x00000000706B0000-0x0000000070A07000-memory.dmp

      Filesize

      3.3MB

    • memory/1676-110-0x0000000005F20000-0x0000000006277000-memory.dmp

      Filesize

      3.3MB

    • memory/2188-76-0x0000000007D40000-0x0000000007D51000-memory.dmp

      Filesize

      68KB

    • memory/2188-63-0x0000000006320000-0x0000000006677000-memory.dmp

      Filesize

      3.3MB

    • memory/2188-77-0x0000000007D90000-0x0000000007DA5000-memory.dmp

      Filesize

      84KB

    • memory/2188-75-0x0000000007A40000-0x0000000007AE4000-memory.dmp

      Filesize

      656KB

    • memory/2188-66-0x0000000070690000-0x00000000709E7000-memory.dmp

      Filesize

      3.3MB

    • memory/2188-65-0x0000000070510000-0x000000007055C000-memory.dmp

      Filesize

      304KB

    • memory/2188-64-0x0000000006D20000-0x0000000006D6C000-memory.dmp

      Filesize

      304KB

    • memory/2256-189-0x0000000070390000-0x00000000703DC000-memory.dmp

      Filesize

      304KB

    • memory/2256-190-0x0000000070510000-0x0000000070867000-memory.dmp

      Filesize

      3.3MB

    • memory/2624-211-0x0000000000400000-0x0000000001DF1000-memory.dmp

      Filesize

      25.9MB

    • memory/2624-214-0x0000000000400000-0x0000000001DF1000-memory.dmp

      Filesize

      25.9MB

    • memory/2624-210-0x0000000000400000-0x0000000001DF1000-memory.dmp

      Filesize

      25.9MB

    • memory/2624-154-0x0000000000400000-0x0000000001DF1000-memory.dmp

      Filesize

      25.9MB

    • memory/2624-212-0x0000000000400000-0x0000000001DF1000-memory.dmp

      Filesize

      25.9MB

    • memory/2624-213-0x0000000000400000-0x0000000001DF1000-memory.dmp

      Filesize

      25.9MB

    • memory/2624-208-0x0000000000400000-0x0000000001DF1000-memory.dmp

      Filesize

      25.9MB

    • memory/2624-209-0x0000000000400000-0x0000000001DF1000-memory.dmp

      Filesize

      25.9MB

    • memory/2624-207-0x0000000000400000-0x0000000001DF1000-memory.dmp

      Filesize

      25.9MB

    • memory/2624-216-0x0000000000400000-0x0000000001DF1000-memory.dmp

      Filesize

      25.9MB

    • memory/2624-206-0x0000000000400000-0x0000000001DF1000-memory.dmp

      Filesize

      25.9MB

    • memory/2624-215-0x0000000000400000-0x0000000001DF1000-memory.dmp

      Filesize

      25.9MB

    • memory/2624-205-0x0000000000400000-0x0000000001DF1000-memory.dmp

      Filesize

      25.9MB

    • memory/3048-92-0x0000000070760000-0x0000000070AB7000-memory.dmp

      Filesize

      3.3MB

    • memory/3048-91-0x0000000070510000-0x000000007055C000-memory.dmp

      Filesize

      304KB

    • memory/3048-81-0x0000000005990000-0x0000000005CE7000-memory.dmp

      Filesize

      3.3MB

    • memory/3660-42-0x0000000007DA0000-0x0000000007DAA000-memory.dmp

      Filesize

      40KB

    • memory/3660-6-0x0000000005510000-0x0000000005520000-memory.dmp

      Filesize

      64KB

    • memory/3660-44-0x0000000007DC0000-0x0000000007DD1000-memory.dmp

      Filesize

      68KB

    • memory/3660-26-0x0000000070400000-0x000000007044C000-memory.dmp

      Filesize

      304KB

    • memory/3660-27-0x0000000070610000-0x0000000070967000-memory.dmp

      Filesize

      3.3MB

    • memory/3660-25-0x0000000007BB0000-0x0000000007BE4000-memory.dmp

      Filesize

      208KB

    • memory/3660-24-0x000000007EEA0000-0x000000007EEB0000-memory.dmp

      Filesize

      64KB

    • memory/3660-23-0x0000000007920000-0x0000000007966000-memory.dmp

      Filesize

      280KB

    • memory/3660-22-0x00000000067E0000-0x000000000682C000-memory.dmp

      Filesize

      304KB

    • memory/3660-21-0x00000000067A0000-0x00000000067BE000-memory.dmp

      Filesize

      120KB

    • memory/3660-20-0x00000000062D0000-0x0000000006627000-memory.dmp

      Filesize

      3.3MB

    • memory/3660-37-0x0000000007C30000-0x0000000007CD4000-memory.dmp

      Filesize

      656KB

    • memory/3660-11-0x0000000006260000-0x00000000062C6000-memory.dmp

      Filesize

      408KB

    • memory/3660-10-0x00000000061F0000-0x0000000006256000-memory.dmp

      Filesize

      408KB

    • memory/3660-9-0x00000000059F0000-0x0000000005A12000-memory.dmp

      Filesize

      136KB

    • memory/3660-7-0x0000000005510000-0x0000000005520000-memory.dmp

      Filesize

      64KB

    • memory/3660-8-0x0000000005B50000-0x000000000617A000-memory.dmp

      Filesize

      6.2MB

    • memory/3660-36-0x0000000007C10000-0x0000000007C2E000-memory.dmp

      Filesize

      120KB

    • memory/3660-5-0x0000000074190000-0x0000000074941000-memory.dmp

      Filesize

      7.7MB

    • memory/3660-4-0x00000000032D0000-0x0000000003306000-memory.dmp

      Filesize

      216KB

    • memory/3660-45-0x0000000007E10000-0x0000000007E1E000-memory.dmp

      Filesize

      56KB

    • memory/3660-39-0x0000000005510000-0x0000000005520000-memory.dmp

      Filesize

      64KB

    • memory/3660-38-0x0000000005510000-0x0000000005520000-memory.dmp

      Filesize

      64KB

    • memory/3660-46-0x0000000007E20000-0x0000000007E35000-memory.dmp

      Filesize

      84KB

    • memory/3660-40-0x00000000083A0000-0x0000000008A1A000-memory.dmp

      Filesize

      6.5MB

    • memory/3660-41-0x0000000007D60000-0x0000000007D7A000-memory.dmp

      Filesize

      104KB

    • memory/3660-43-0x0000000007EB0000-0x0000000007F46000-memory.dmp

      Filesize

      600KB

    • memory/3660-47-0x0000000007E70000-0x0000000007E8A000-memory.dmp

      Filesize

      104KB

    • memory/3660-48-0x0000000007E90000-0x0000000007E98000-memory.dmp

      Filesize

      32KB

    • memory/3660-51-0x0000000074190000-0x0000000074941000-memory.dmp

      Filesize

      7.7MB

    • memory/4080-52-0x0000000000400000-0x0000000001DF1000-memory.dmp

      Filesize

      25.9MB

    • memory/4080-53-0x0000000003FB0000-0x000000000489B000-memory.dmp

      Filesize

      8.9MB

    • memory/4080-1-0x0000000002210000-0x000000000260A000-memory.dmp

      Filesize

      4.0MB

    • memory/4080-2-0x0000000003FB0000-0x000000000489B000-memory.dmp

      Filesize

      8.9MB

    • memory/4080-3-0x0000000000400000-0x0000000001DF1000-memory.dmp

      Filesize

      25.9MB

    • memory/4964-126-0x0000000000400000-0x0000000001DF1000-memory.dmp

      Filesize

      25.9MB