Analysis

  • max time kernel
    301s
  • max time network
    298s
  • platform
    windows10-1703_x64
  • resource
    win10-20230220-en
  • resource tags

    arch:x64arch:x86image:win10-20230220-enlocale:en-usos:windows10-1703-x64system
  • submitted
    12-06-2023 03:00

General

  • Target

    8b0bc6d4b66528046bbb615a4749d3f8de40587632fc98e16264d39644f2839f.exe

  • Size

    4.1MB

  • MD5

    d82f58a3a66392e427af0c1ed193a436

  • SHA1

    9400a04b6723f3c338dc783ee1f042c38b0ef7bb

  • SHA256

    8b0bc6d4b66528046bbb615a4749d3f8de40587632fc98e16264d39644f2839f

  • SHA512

    8fd988b26e6c15bb35820ee880fc910bd765d7a7cd0776c370133a236ce9b1f4d558f922efb538a9e98c5c5d5c3a49a0cf4df59b7ea1383152cb15b824913fdb

  • SSDEEP

    98304:pXhDTlaeN7+WIQy2uZFBRMNdD+S1O82s2jA3qPjPLFjEut3uNt+euu2TO+N8:pXXN7DvuZ5M7+v4AjLFgNt+euq

Malware Config

Signatures

  • Glupteba

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

  • Glupteba payload 33 IoCs
  • Windows security bypass 2 TTPs 7 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Windows security modification 2 TTPs 7 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 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 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 9 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\8b0bc6d4b66528046bbb615a4749d3f8de40587632fc98e16264d39644f2839f.exe
    "C:\Users\Admin\AppData\Local\Temp\8b0bc6d4b66528046bbb615a4749d3f8de40587632fc98e16264d39644f2839f.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2008
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2852
    • C:\Users\Admin\AppData\Local\Temp\8b0bc6d4b66528046bbb615a4749d3f8de40587632fc98e16264d39644f2839f.exe
      "C:\Users\Admin\AppData\Local\Temp\8b0bc6d4b66528046bbb615a4749d3f8de40587632fc98e16264d39644f2839f.exe"
      2⤵
      • Windows security bypass
      • Windows security modification
      • 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:1012
      • 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:4772
      • 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:3128
        • 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:3144
      • 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:4904
      • 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:1708
      • 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:2588
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell -nologo -noprofile
          4⤵
          • Modifies data under HKEY_USERS
          PID:1372
        • 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:1572
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:4584
          • 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:1348
          • 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:692
          • 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:1136
          • 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:4688

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Execution

    Scheduled Task

    1
    T1053

    Persistence

    Modify Existing Service

    1
    T1031

    Registry Run Keys / Startup Folder

    1
    T1060

    Scheduled Task

    1
    T1053

    Privilege Escalation

    Scheduled Task

    1
    T1053

    Defense Evasion

    Disabling Security Tools

    2
    T1089

    Modify Registry

    3
    T1112

    Discovery

    Query Registry

    2
    T1012

    System Information Discovery

    1
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_xgk0w4cp.mfr.ps1
      Filesize

      1B

      MD5

      c4ca4238a0b923820dcc509a6f75849b

      SHA1

      356a192b7913b04c54574d18c28d46e6395428ab

      SHA256

      6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b

      SHA512

      4dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a

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

      281KB

      MD5

      d98e33b66343e7c96158444127a117f6

      SHA1

      bb716c5509a2bf345c6c1152f6e3e1452d39d50d

      SHA256

      5de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1

      SHA512

      705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5

    • 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

      db01a2c1c7e70b2b038edf8ad5ad9826

      SHA1

      540217c647a73bad8d8a79e3a0f3998b5abd199b

      SHA256

      413da361d77055dae7007f82b58b366c8783aa72e0b8fbe41519b940c253b38d

      SHA512

      c76ff57fcee5cdf9fdf3116d4e1dc0cf106867bf19ab474b763e242acf5dca9a7509cb837c35e130c3e056636b4e8a4e135512a978bcd3dd641e20f5bf76c3d6

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

      18KB

      MD5

      6c1d4ef0c6c7ec76478da3c8db6ddcc7

      SHA1

      f0125f5b63449dac742e0d95983dcf516a62ceb0

      SHA256

      0178d065ac2d8409708cf25704987d8c3568784cfa1ba26194aaac9431ad9788

      SHA512

      ff1b8f92a1c63285c0d65b2ae069a02bf4302c089692d4e4fcde256a4382de5e8d9d16437cb29b01631bca4760d919d7a5940007ed2defd9c9aba0ecef091a35

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

      18KB

      MD5

      f1dacef4a9d689c132fd4f5bae8b2cd8

      SHA1

      a8aa9848c79582377facd9414ba59f513e0378fa

      SHA256

      5c1ac9e28c75640919d46e0e58770d5be7712965b13a037c001bb242b4f39e72

      SHA512

      fc4ec503cf21491148011c1040e4f4d451a9f482de2353901f2f80b79a1e06f5ddea43293a3af8f220b698d559c4546b70347afedff70bdbbf63dc3d3c7f2b62

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

      18KB

      MD5

      527d0a460d848355696c755dea333173

      SHA1

      63ef6bc33b54255a5ef0e6b6dff83b0cf2e22f4e

      SHA256

      fc22deb7a9efa87da93dfe8e6b219677bf32130562350bc1bed7eced8259cd86

      SHA512

      825d10e74ef34558def5287f248d9c739bd2f75b1fe43a8a04a4cc732c98c8d57a1430f89a2684c24a5b6e2cdf6ecca72cf7e79bf2d8f56f7af88087035c1167

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

      18KB

      MD5

      d762561f927500ced88888b2c8101e6e

      SHA1

      7734994b4cbff8019dd91e8f8f71a946ec398db2

      SHA256

      269e9c7d483e69e8ff06fb6c1e7657375c2dd872f06cbeb20a598b4345ef0480

      SHA512

      1f08a8f1f5ccd8dd023167dace834a487f0307319f156769df6f21994f8075b1253474acac5e50e8c95b2b340aaa3baffce3575d5a07d7533fa278bb601cc3ea

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

      4.1MB

      MD5

      d82f58a3a66392e427af0c1ed193a436

      SHA1

      9400a04b6723f3c338dc783ee1f042c38b0ef7bb

      SHA256

      8b0bc6d4b66528046bbb615a4749d3f8de40587632fc98e16264d39644f2839f

      SHA512

      8fd988b26e6c15bb35820ee880fc910bd765d7a7cd0776c370133a236ce9b1f4d558f922efb538a9e98c5c5d5c3a49a0cf4df59b7ea1383152cb15b824913fdb

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

      4.1MB

      MD5

      d82f58a3a66392e427af0c1ed193a436

      SHA1

      9400a04b6723f3c338dc783ee1f042c38b0ef7bb

      SHA256

      8b0bc6d4b66528046bbb615a4749d3f8de40587632fc98e16264d39644f2839f

      SHA512

      8fd988b26e6c15bb35820ee880fc910bd765d7a7cd0776c370133a236ce9b1f4d558f922efb538a9e98c5c5d5c3a49a0cf4df59b7ea1383152cb15b824913fdb

    • memory/692-1474-0x00000000052D0000-0x00000000052E0000-memory.dmp
      Filesize

      64KB

    • memory/692-1409-0x00000000081D0000-0x0000000008520000-memory.dmp
      Filesize

      3.3MB

    • memory/692-1411-0x00000000052D0000-0x00000000052E0000-memory.dmp
      Filesize

      64KB

    • memory/692-1412-0x00000000052D0000-0x00000000052E0000-memory.dmp
      Filesize

      64KB

    • memory/692-1472-0x000000007F1A0000-0x000000007F1B0000-memory.dmp
      Filesize

      64KB

    • memory/1012-1153-0x0000000000400000-0x0000000001EB5000-memory.dmp
      Filesize

      26.7MB

    • memory/1012-655-0x0000000000400000-0x0000000001EB5000-memory.dmp
      Filesize

      26.7MB

    • memory/1012-913-0x0000000000400000-0x0000000001EB5000-memory.dmp
      Filesize

      26.7MB

    • memory/1348-1167-0x0000000006E00000-0x0000000006E10000-memory.dmp
      Filesize

      64KB

    • memory/1348-1164-0x0000000007DB0000-0x0000000008100000-memory.dmp
      Filesize

      3.3MB

    • memory/1348-1166-0x0000000006E00000-0x0000000006E10000-memory.dmp
      Filesize

      64KB

    • memory/1348-1168-0x0000000008410000-0x000000000845B000-memory.dmp
      Filesize

      300KB

    • memory/1348-1192-0x0000000009810000-0x00000000098B5000-memory.dmp
      Filesize

      660KB

    • memory/1348-1193-0x000000007F0A0000-0x000000007F0B0000-memory.dmp
      Filesize

      64KB

    • memory/1348-1194-0x0000000006E00000-0x0000000006E10000-memory.dmp
      Filesize

      64KB

    • memory/1708-932-0x000000007EDC0000-0x000000007EDD0000-memory.dmp
      Filesize

      64KB

    • memory/1708-911-0x0000000004940000-0x0000000004950000-memory.dmp
      Filesize

      64KB

    • memory/1708-945-0x0000000004940000-0x0000000004950000-memory.dmp
      Filesize

      64KB

    • memory/1708-910-0x0000000004940000-0x0000000004950000-memory.dmp
      Filesize

      64KB

    • memory/2008-154-0x0000000000400000-0x0000000001EB5000-memory.dmp
      Filesize

      26.7MB

    • memory/2008-186-0x00000000041C0000-0x0000000004AAB000-memory.dmp
      Filesize

      8.9MB

    • memory/2008-122-0x00000000041C0000-0x0000000004AAB000-memory.dmp
      Filesize

      8.9MB

    • memory/2008-420-0x0000000000400000-0x0000000001EB5000-memory.dmp
      Filesize

      26.7MB

    • memory/2008-410-0x0000000000400000-0x0000000001EB5000-memory.dmp
      Filesize

      26.7MB

    • memory/2588-1670-0x0000000000400000-0x0000000001EB5000-memory.dmp
      Filesize

      26.7MB

    • memory/2588-1662-0x0000000000400000-0x0000000001EB5000-memory.dmp
      Filesize

      26.7MB

    • memory/2588-1668-0x0000000000400000-0x0000000001EB5000-memory.dmp
      Filesize

      26.7MB

    • memory/2588-1667-0x0000000000400000-0x0000000001EB5000-memory.dmp
      Filesize

      26.7MB

    • memory/2588-1666-0x0000000000400000-0x0000000001EB5000-memory.dmp
      Filesize

      26.7MB

    • memory/2588-1665-0x0000000000400000-0x0000000001EB5000-memory.dmp
      Filesize

      26.7MB

    • memory/2588-1467-0x0000000000400000-0x0000000001EB5000-memory.dmp
      Filesize

      26.7MB

    • memory/2588-1671-0x0000000000400000-0x0000000001EB5000-memory.dmp
      Filesize

      26.7MB

    • memory/2588-1672-0x0000000000400000-0x0000000001EB5000-memory.dmp
      Filesize

      26.7MB

    • memory/2588-1664-0x0000000000400000-0x0000000001EB5000-memory.dmp
      Filesize

      26.7MB

    • memory/2588-1673-0x0000000000400000-0x0000000001EB5000-memory.dmp
      Filesize

      26.7MB

    • memory/2588-1674-0x0000000000400000-0x0000000001EB5000-memory.dmp
      Filesize

      26.7MB

    • memory/2588-1663-0x0000000000400000-0x0000000001EB5000-memory.dmp
      Filesize

      26.7MB

    • memory/2588-1669-0x0000000000400000-0x0000000001EB5000-memory.dmp
      Filesize

      26.7MB

    • memory/2588-1661-0x0000000000400000-0x0000000001EB5000-memory.dmp
      Filesize

      26.7MB

    • memory/2588-1156-0x0000000004400000-0x0000000004CEB000-memory.dmp
      Filesize

      8.9MB

    • memory/2588-1660-0x0000000000400000-0x0000000001EB5000-memory.dmp
      Filesize

      26.7MB

    • memory/2588-1659-0x0000000000400000-0x0000000001EB5000-memory.dmp
      Filesize

      26.7MB

    • memory/2588-1675-0x0000000000400000-0x0000000001EB5000-memory.dmp
      Filesize

      26.7MB

    • memory/2588-1658-0x0000000000400000-0x0000000001EB5000-memory.dmp
      Filesize

      26.7MB

    • memory/2588-1676-0x0000000000400000-0x0000000001EB5000-memory.dmp
      Filesize

      26.7MB

    • memory/2588-1657-0x0000000000400000-0x0000000001EB5000-memory.dmp
      Filesize

      26.7MB

    • memory/2588-1187-0x0000000000400000-0x0000000001EB5000-memory.dmp
      Filesize

      26.7MB

    • memory/2588-1656-0x0000000000400000-0x0000000001EB5000-memory.dmp
      Filesize

      26.7MB

    • memory/2588-1655-0x0000000000400000-0x0000000001EB5000-memory.dmp
      Filesize

      26.7MB

    • memory/2852-271-0x0000000006630000-0x0000000006640000-memory.dmp
      Filesize

      64KB

    • memory/2852-199-0x00000000099C0000-0x0000000009A65000-memory.dmp
      Filesize

      660KB

    • memory/2852-130-0x0000000007520000-0x0000000007586000-memory.dmp
      Filesize

      408KB

    • memory/2852-129-0x00000000072A0000-0x00000000072C2000-memory.dmp
      Filesize

      136KB

    • memory/2852-132-0x0000000007640000-0x0000000007990000-memory.dmp
      Filesize

      3.3MB

    • memory/2852-128-0x0000000006630000-0x0000000006640000-memory.dmp
      Filesize

      64KB

    • memory/2852-126-0x0000000006630000-0x0000000006640000-memory.dmp
      Filesize

      64KB

    • memory/2852-127-0x0000000006C70000-0x0000000007298000-memory.dmp
      Filesize

      6.2MB

    • memory/2852-125-0x0000000006540000-0x0000000006576000-memory.dmp
      Filesize

      216KB

    • memory/2852-133-0x0000000007A00000-0x0000000007A1C000-memory.dmp
      Filesize

      112KB

    • memory/2852-134-0x0000000007F40000-0x0000000007F8B000-memory.dmp
      Filesize

      300KB

    • memory/2852-153-0x0000000008A80000-0x0000000008ABC000-memory.dmp
      Filesize

      240KB

    • memory/2852-185-0x0000000008B40000-0x0000000008BB6000-memory.dmp
      Filesize

      472KB

    • memory/2852-193-0x0000000009980000-0x00000000099B3000-memory.dmp
      Filesize

      204KB

    • memory/2852-194-0x0000000009960000-0x000000000997E000-memory.dmp
      Filesize

      120KB

    • memory/2852-131-0x0000000007340000-0x00000000073A6000-memory.dmp
      Filesize

      408KB

    • memory/2852-200-0x000000007EFF0000-0x000000007F000000-memory.dmp
      Filesize

      64KB

    • memory/2852-201-0x0000000009B90000-0x0000000009C24000-memory.dmp
      Filesize

      592KB

    • memory/2852-205-0x0000000006630000-0x0000000006640000-memory.dmp
      Filesize

      64KB

    • memory/2852-401-0x0000000007FB0000-0x0000000007FB8000-memory.dmp
      Filesize

      32KB

    • memory/2852-396-0x0000000009550000-0x000000000956A000-memory.dmp
      Filesize

      104KB

    • memory/4772-518-0x0000000004AB0000-0x0000000004AC0000-memory.dmp
      Filesize

      64KB

    • memory/4772-449-0x000000007EBC0000-0x000000007EBD0000-memory.dmp
      Filesize

      64KB

    • memory/4772-448-0x0000000009300000-0x00000000093A5000-memory.dmp
      Filesize

      660KB

    • memory/4772-425-0x0000000007DC0000-0x0000000007E0B000-memory.dmp
      Filesize

      300KB

    • memory/4772-424-0x00000000079F0000-0x0000000007D40000-memory.dmp
      Filesize

      3.3MB

    • memory/4904-670-0x0000000006670000-0x0000000006680000-memory.dmp
      Filesize

      64KB

    • memory/4904-671-0x0000000006670000-0x0000000006680000-memory.dmp
      Filesize

      64KB

    • memory/4904-729-0x0000000006670000-0x0000000006680000-memory.dmp
      Filesize

      64KB

    • memory/4904-668-0x0000000007480000-0x00000000077D0000-memory.dmp
      Filesize

      3.3MB

    • memory/4904-727-0x000000007EAF0000-0x000000007EB00000-memory.dmp
      Filesize

      64KB