Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240419-en
  • resource tags

    arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    27-04-2024 22:26

General

  • Target

    6c1c97db6756e5e09864b960c85186cde473d5d77f2c948ba7c981e346fa26f5.exe

  • Size

    4.2MB

  • MD5

    bab9479f86eda380226174f7e0f4e869

  • SHA1

    8cf919575f65f11362cd7ba83446136bca963442

  • SHA256

    6c1c97db6756e5e09864b960c85186cde473d5d77f2c948ba7c981e346fa26f5

  • SHA512

    b090c97d185808cc64126aa9a0b6ec6c20134ef7883bf638e0f0ff92022587084a9769fbb6fc4a6feba6702690044412a291af3c20e437e18c7dd34c6eff64ad

  • SSDEEP

    98304:PamOmyh13YwSD+iffg9rOMOczucEEdNxQlfwo87Elwi0PG1K:PTy8Jy4o9ecZxQhwo8IinPG1K

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\6c1c97db6756e5e09864b960c85186cde473d5d77f2c948ba7c981e346fa26f5.exe
    "C:\Users\Admin\AppData\Local\Temp\6c1c97db6756e5e09864b960c85186cde473d5d77f2c948ba7c981e346fa26f5.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1160
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2808
    • C:\Users\Admin\AppData\Local\Temp\6c1c97db6756e5e09864b960c85186cde473d5d77f2c948ba7c981e346fa26f5.exe
      "C:\Users\Admin\AppData\Local\Temp\6c1c97db6756e5e09864b960c85186cde473d5d77f2c948ba7c981e346fa26f5.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:1544
      • 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:2072
      • 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:3968
      • 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:4272
      • 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:4592
      • 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:2504
        • 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:1004
        • 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:4912
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:4768
          • 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:4916
          • 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:2760
          • 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:3336
          • 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:2412

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Execution

    Scheduled Task/Job

    1
    T1053

    Persistence

    Create or Modify System Process

    1
    T1543

    Windows Service

    1
    T1543.003

    Boot or Logon Autostart Execution

    1
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Scheduled Task/Job

    1
    T1053

    Privilege Escalation

    Create or Modify System Process

    1
    T1543

    Windows Service

    1
    T1543.003

    Boot or Logon Autostart Execution

    1
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Scheduled Task/Job

    1
    T1053

    Defense Evasion

    Impair Defenses

    1
    T1562

    Disable or Modify System Firewall

    1
    T1562.004

    Modify Registry

    1
    T1112

    Discovery

    Query Registry

    2
    T1012

    System Information Discovery

    1
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_qnnsottq.u12.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

      d0c46cad6c0778401e21910bd6b56b70

      SHA1

      7be418951ea96326aca445b8dfe449b2bfa0dca6

      SHA256

      9600b3fdf0565ccb49e21656aa4b24d7c18f776bfd04d9ee984b134707550f02

      SHA512

      057531b468f7fbbb2175a696a8aab274dec0d17d9f71df309edcff35e064f3378050066a3df47ccd03048fac461594ec75e3d4fe64f9dd79949d129f51e02949

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

      19KB

      MD5

      4c65e58f0334cf22673dc90723ce2f01

      SHA1

      5e729ab05026062c4460e4cac91426e69e5a5936

      SHA256

      6a424dd5dcbad5fd52dd27fba3cb610da7c0e309d7f06cf5d78702b4673f8239

      SHA512

      04e3d59ec70bc7ad1d646d0e764ab2a0b0960744171b150b02e3225bfecceffc3d9c20ac1ecaafb69c33ca58f5609bdbd13095905e005bba9f4b361a6cd18a9b

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

      19KB

      MD5

      50ab64c0054d73374ffa91d8eaf81da0

      SHA1

      35bdad5202f647c563fe4230ffd17fbd97e91104

      SHA256

      11589eb6bb165583f131eb65c02d267feda4749a082324d945c9489613b52fde

      SHA512

      72012c5983a4f5e047fab63f1200c165f5228de15dc91e290686d62f525033ef31d6f6ee73616c48a3af0342aa6c8eebdec543f9745f3addafdb1d7e27d2cc86

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

      19KB

      MD5

      33bd1a2c0b28660cf8ba4fb771788a7d

      SHA1

      60b8c54da50a0b7f04a7eb3a3ec6a2980fb07e88

      SHA256

      b2c8dbef82bef4afbf85a8256c1310f7d734500888ac7afe85e7e24432ff390b

      SHA512

      9ee9f6582a09b3e37c7f5c3bb4e1a25fba4a94ebbf16b4cce2f56ecdfa3c517224ecefb9145702dbec444a5a75aa19ec345c02865748009442cf522b59500926

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

      19KB

      MD5

      4cd2a87cb196b154512fcd1ec97b2dec

      SHA1

      c15af41c39c0acfe41b8b47d8ea8bf2381371aa2

      SHA256

      9c9c6c54ea5bcd2daf899c11b80bc1f63a629aea80bc00ed1c0e38500bc4d247

      SHA512

      3e4c86b5cbb11707257de73ed2f1245968abf7ed82af99b199cc3f3b8f04378a8bed36f1c4183c18e66ba90181ccd2845a2e609828a0e8de6f6ea5a6ee9454f5

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

      19KB

      MD5

      2c5edd2b4669f24904153336c2b46786

      SHA1

      ffb120a3e57f70a8688c25ac0dc122207a684cae

      SHA256

      c2c757717762404bc55953f6467dcbd39350483d9ae5d56c550aca14058a8757

      SHA512

      d4609f550cffa8f6bc93204aac2892b0e2bbfd847e35ed54280a7cf6e53bd6794b1846a7dea2bbe69b3354a35ebe02a05a1e298f2f05ea569cab9e103897f09b

    • C:\Windows\rss\csrss.exe
      Filesize

      4.2MB

      MD5

      bab9479f86eda380226174f7e0f4e869

      SHA1

      8cf919575f65f11362cd7ba83446136bca963442

      SHA256

      6c1c97db6756e5e09864b960c85186cde473d5d77f2c948ba7c981e346fa26f5

      SHA512

      b090c97d185808cc64126aa9a0b6ec6c20134ef7883bf638e0f0ff92022587084a9769fbb6fc4a6feba6702690044412a291af3c20e437e18c7dd34c6eff64ad

    • memory/1004-138-0x0000000070F80000-0x00000000712D7000-memory.dmp
      Filesize

      3.3MB

    • memory/1004-137-0x0000000070E00000-0x0000000070E4C000-memory.dmp
      Filesize

      304KB

    • memory/1004-135-0x0000000005610000-0x0000000005967000-memory.dmp
      Filesize

      3.3MB

    • memory/1160-3-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/1160-120-0x0000000003F10000-0x00000000047FB000-memory.dmp
      Filesize

      8.9MB

    • memory/1160-118-0x00000000020F0000-0x00000000024ED000-memory.dmp
      Filesize

      4.0MB

    • memory/1160-2-0x0000000003F10000-0x00000000047FB000-memory.dmp
      Filesize

      8.9MB

    • memory/1160-88-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/1160-1-0x00000000020F0000-0x00000000024ED000-memory.dmp
      Filesize

      4.0MB

    • memory/1544-123-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/2072-61-0x0000000071050000-0x00000000713A7000-memory.dmp
      Filesize

      3.3MB

    • memory/2072-60-0x0000000070E00000-0x0000000070E4C000-memory.dmp
      Filesize

      304KB

    • memory/2072-72-0x0000000007240000-0x0000000007255000-memory.dmp
      Filesize

      84KB

    • memory/2072-71-0x00000000071F0000-0x0000000007201000-memory.dmp
      Filesize

      68KB

    • memory/2072-70-0x0000000006EA0000-0x0000000006F44000-memory.dmp
      Filesize

      656KB

    • memory/2504-149-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/2504-206-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/2504-220-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/2504-218-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/2504-216-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/2504-224-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/2504-204-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/2504-222-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/2504-208-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/2504-210-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/2504-197-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/2504-212-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/2504-214-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/2760-184-0x00000000055D0000-0x0000000005927000-memory.dmp
      Filesize

      3.3MB

    • memory/2760-186-0x0000000070D20000-0x0000000070D6C000-memory.dmp
      Filesize

      304KB

    • memory/2760-187-0x0000000070EA0000-0x00000000711F7000-memory.dmp
      Filesize

      3.3MB

    • memory/2808-37-0x0000000007130000-0x00000000071D4000-memory.dmp
      Filesize

      656KB

    • memory/2808-6-0x0000000074B90000-0x0000000075341000-memory.dmp
      Filesize

      7.7MB

    • memory/2808-25-0x000000007F1C0000-0x000000007F1D0000-memory.dmp
      Filesize

      64KB

    • memory/2808-24-0x00000000070B0000-0x00000000070E4000-memory.dmp
      Filesize

      208KB

    • memory/2808-26-0x0000000070E00000-0x0000000070E4C000-memory.dmp
      Filesize

      304KB

    • memory/2808-23-0x0000000006210000-0x0000000006256000-memory.dmp
      Filesize

      280KB

    • memory/2808-43-0x00000000072C0000-0x00000000072D1000-memory.dmp
      Filesize

      68KB

    • memory/2808-27-0x0000000071050000-0x00000000713A7000-memory.dmp
      Filesize

      3.3MB

    • memory/2808-38-0x00000000024B0000-0x00000000024C0000-memory.dmp
      Filesize

      64KB

    • memory/2808-21-0x0000000005CA0000-0x0000000005CBE000-memory.dmp
      Filesize

      120KB

    • memory/2808-20-0x00000000057C0000-0x0000000005B17000-memory.dmp
      Filesize

      3.3MB

    • memory/2808-11-0x0000000005750000-0x00000000057B6000-memory.dmp
      Filesize

      408KB

    • memory/2808-10-0x00000000056E0000-0x0000000005746000-memory.dmp
      Filesize

      408KB

    • memory/2808-9-0x0000000005640000-0x0000000005662000-memory.dmp
      Filesize

      136KB

    • memory/2808-5-0x0000000004F10000-0x000000000553A000-memory.dmp
      Filesize

      6.2MB

    • memory/2808-22-0x0000000005CD0000-0x0000000005D1C000-memory.dmp
      Filesize

      304KB

    • memory/2808-36-0x0000000007110000-0x000000000712E000-memory.dmp
      Filesize

      120KB

    • memory/2808-41-0x00000000072A0000-0x00000000072AA000-memory.dmp
      Filesize

      40KB

    • memory/2808-7-0x00000000024B0000-0x00000000024C0000-memory.dmp
      Filesize

      64KB

    • memory/2808-39-0x00000000078A0000-0x0000000007F1A000-memory.dmp
      Filesize

      6.5MB

    • memory/2808-40-0x0000000007260000-0x000000000727A000-memory.dmp
      Filesize

      104KB

    • memory/2808-50-0x0000000074B90000-0x0000000075341000-memory.dmp
      Filesize

      7.7MB

    • memory/2808-47-0x0000000007390000-0x0000000007398000-memory.dmp
      Filesize

      32KB

    • memory/2808-46-0x0000000007370000-0x000000000738A000-memory.dmp
      Filesize

      104KB

    • memory/2808-8-0x00000000024B0000-0x00000000024C0000-memory.dmp
      Filesize

      64KB

    • memory/2808-45-0x0000000007320000-0x0000000007335000-memory.dmp
      Filesize

      84KB

    • memory/2808-4-0x00000000024C0000-0x00000000024F6000-memory.dmp
      Filesize

      216KB

    • memory/2808-44-0x0000000007310000-0x000000000731E000-memory.dmp
      Filesize

      56KB

    • memory/2808-42-0x00000000073B0000-0x0000000007446000-memory.dmp
      Filesize

      600KB

    • memory/4272-84-0x0000000006190000-0x00000000064E7000-memory.dmp
      Filesize

      3.3MB

    • memory/4272-87-0x0000000070FA0000-0x00000000712F7000-memory.dmp
      Filesize

      3.3MB

    • memory/4272-86-0x0000000070E00000-0x0000000070E4C000-memory.dmp
      Filesize

      304KB

    • memory/4592-109-0x0000000071010000-0x0000000071367000-memory.dmp
      Filesize

      3.3MB

    • memory/4592-108-0x0000000070E00000-0x0000000070E4C000-memory.dmp
      Filesize

      304KB

    • memory/4592-106-0x0000000005DD0000-0x0000000006127000-memory.dmp
      Filesize

      3.3MB

    • memory/4916-174-0x0000000005C30000-0x0000000005C45000-memory.dmp
      Filesize

      84KB

    • memory/4916-173-0x0000000007410000-0x0000000007421000-memory.dmp
      Filesize

      68KB

    • memory/4916-172-0x0000000007090000-0x0000000007134000-memory.dmp
      Filesize

      656KB

    • memory/4916-163-0x0000000070F30000-0x0000000071287000-memory.dmp
      Filesize

      3.3MB

    • memory/4916-162-0x0000000070D20000-0x0000000070D6C000-memory.dmp
      Filesize

      304KB

    • memory/4916-161-0x00000000063A0000-0x00000000063EC000-memory.dmp
      Filesize

      304KB

    • memory/4916-159-0x00000000058B0000-0x0000000005C07000-memory.dmp
      Filesize

      3.3MB