Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-1703_x64
  • resource
    win10-20230220-en
  • resource tags

    arch:x64arch:x86image:win10-20230220-enlocale:en-usos:windows10-1703-x64system
  • submitted
    28/05/2023, 08:14

General

  • Target

    f6fb51220207021f02a9d90531d383565c7906428e112adf3f321145ff1c9e2b.exe

  • Size

    4.2MB

  • MD5

    f98616ca10fec12b9beb37ca15a63b0f

  • SHA1

    2581799ed3b601a514e9da42fa91ae7167f8bb7f

  • SHA256

    f6fb51220207021f02a9d90531d383565c7906428e112adf3f321145ff1c9e2b

  • SHA512

    ce32fa045e21e07f7a403ec71e60972d9e2b1521b1e8982fcd61e5f0290dcc9bdd55729b744342693c833e6330fbbe70d11069850a3e59a13e66a07e45152391

  • SSDEEP

    98304:/RKU80KHe0iz3Dt6Ds6DV8G66EjKN69i5SvbFOqRrLfO2FnC8e:/4e0i7Dt6XDGG/EjKN6LjxdFnC8e

Malware Config

Signatures

  • Glupteba

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

  • Glupteba payload 16 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 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\f6fb51220207021f02a9d90531d383565c7906428e112adf3f321145ff1c9e2b.exe
    "C:\Users\Admin\AppData\Local\Temp\f6fb51220207021f02a9d90531d383565c7906428e112adf3f321145ff1c9e2b.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3608
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4500
    • C:\Users\Admin\AppData\Local\Temp\f6fb51220207021f02a9d90531d383565c7906428e112adf3f321145ff1c9e2b.exe
      "C:\Users\Admin\AppData\Local\Temp\f6fb51220207021f02a9d90531d383565c7906428e112adf3f321145ff1c9e2b.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:1672
      • 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:3504
      • 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:4824
        • 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
          • Modifies data under HKEY_USERS
          PID:5012
      • 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:4920
      • 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:1312
      • 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:1044
        • 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:1116
        • 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:4904
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:668
          • 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:3364
          • 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:3784
          • 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:3664
          • 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:3924

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_lg0rehaw.w1f.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

      1c19c16e21c97ed42d5beabc93391fc5

      SHA1

      8ad83f8e0b3acf8dfbbf87931e41f0d664c4df68

      SHA256

      1bcd97396c83babfe6c5068ba590d7a3f8b70e72955a9d1e4070648e404cbf05

      SHA512

      7d18776d8f649b3d29c182ff03efc6cea8b527542ee55304980f24577aae8b64e37044407776e220984346c3998ace5f8853afa58c8b38407482a728e9495e0c

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

      Filesize

      18KB

      MD5

      de0e5982a84b969897a8c1c0deadc168

      SHA1

      3f5348830619f13dc057a519f3fea481f22a8725

      SHA256

      a7b110e620f1ba142d089a587afc2497fdce406ca77666729af06943f28798f9

      SHA512

      3dae7d00bd40518221148b564e9e8b8f7d2a2a8182dc403340bf7c7dc470c13b41d561237dc52f11de96a6b735bf2d2fa176f4c0ef90018be417563375485acf

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

      Filesize

      18KB

      MD5

      29eab0dfb603bacef28f71148a1847d3

      SHA1

      9db0ed84eaca1356c58447a5c89256aa362a175b

      SHA256

      a521f155596c68dc18c97920ec21472f325a59d42db1577281f1ac47f3f8fd82

      SHA512

      32f4f4451b20c4dda138796acfdab75bd6dcada72843adec8a760fb50ef88c86dbefe110a4f0fe87a01cc25e730508febbf257415149ff0c4e9d024fde7b6a14

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

      Filesize

      18KB

      MD5

      8a9288c5699c32b717efe77d9cec09da

      SHA1

      bebf82519036b662e7cc648ee030a534b7f26ba6

      SHA256

      b5bc5750b5d2c2c68943cc3d9e2c26f4d6c5e3c457afd95c0a27f0d04f1d895d

      SHA512

      68342d13d7bf07fe82b196b34b28ece95acef4fe1fc5e3f02a741e75745901ae1f6b66e901d8c48c93dfa8c8812c8de86654001b94b19f052907153d6b50d844

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

      Filesize

      18KB

      MD5

      89bf0afe06e55dfe3560f40356e13dcf

      SHA1

      165ecae688b5e6ae9a4eacde0c44fb83e4309e5f

      SHA256

      b4e5049ed0bbdb2229a2a2b943f39b91785d722da9b4724e30346c29efb2b479

      SHA512

      bafcb090d4a16675f9af5a045442a33854d6ae782d05724a2fcfe5904e926d9a5365313d4c26c3548b57e52e72ff304c96f8d954d8ebf416bf0f4f06ce33bfa4

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

      Filesize

      18KB

      MD5

      4d7ba92f5fb71860c772f669e8123b64

      SHA1

      2decfc80e14a00693901ab0649ea5648dc8cb131

      SHA256

      01a2badb7a66955f365db3191ce4fe68eec4be2290c6274578fb71e6e2486c75

      SHA512

      e8f14e0b66866ad3f2248fbf1034aa81c3fd1787d84762d436d0c6b23e21f7edd11857db551600e8ca2c3b79fccf534a304305a181da3b4b5b54205446d931d3

    • C:\Windows\rss\csrss.exe

      Filesize

      4.2MB

      MD5

      f98616ca10fec12b9beb37ca15a63b0f

      SHA1

      2581799ed3b601a514e9da42fa91ae7167f8bb7f

      SHA256

      f6fb51220207021f02a9d90531d383565c7906428e112adf3f321145ff1c9e2b

      SHA512

      ce32fa045e21e07f7a403ec71e60972d9e2b1521b1e8982fcd61e5f0290dcc9bdd55729b744342693c833e6330fbbe70d11069850a3e59a13e66a07e45152391

    • C:\Windows\rss\csrss.exe

      Filesize

      4.2MB

      MD5

      f98616ca10fec12b9beb37ca15a63b0f

      SHA1

      2581799ed3b601a514e9da42fa91ae7167f8bb7f

      SHA256

      f6fb51220207021f02a9d90531d383565c7906428e112adf3f321145ff1c9e2b

      SHA512

      ce32fa045e21e07f7a403ec71e60972d9e2b1521b1e8982fcd61e5f0290dcc9bdd55729b744342693c833e6330fbbe70d11069850a3e59a13e66a07e45152391

    • memory/1044-1891-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/1044-1893-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/1044-1890-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/1044-1898-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/1044-1428-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/1044-1892-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/1044-1889-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/1044-1897-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/1044-1896-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/1044-1895-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/1044-1894-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/1116-1253-0x0000000006930000-0x0000000006940000-memory.dmp

      Filesize

      64KB

    • memory/1116-1158-0x0000000007E80000-0x0000000007ECB000-memory.dmp

      Filesize

      300KB

    • memory/1116-1156-0x00000000075A0000-0x00000000078F0000-memory.dmp

      Filesize

      3.3MB

    • memory/1116-1159-0x0000000006930000-0x0000000006940000-memory.dmp

      Filesize

      64KB

    • memory/1116-1160-0x0000000006930000-0x0000000006940000-memory.dmp

      Filesize

      64KB

    • memory/1116-1181-0x000000007E6E0000-0x000000007E6F0000-memory.dmp

      Filesize

      64KB

    • memory/1116-1184-0x0000000008F10000-0x0000000008FB5000-memory.dmp

      Filesize

      660KB

    • memory/1312-964-0x0000000005040000-0x0000000005050000-memory.dmp

      Filesize

      64KB

    • memory/1312-963-0x000000007F5F0000-0x000000007F600000-memory.dmp

      Filesize

      64KB

    • memory/1312-925-0x0000000005040000-0x0000000005050000-memory.dmp

      Filesize

      64KB

    • memory/1312-924-0x0000000005040000-0x0000000005050000-memory.dmp

      Filesize

      64KB

    • memory/1672-1151-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/1672-687-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/3364-1416-0x0000000007370000-0x0000000007380000-memory.dmp

      Filesize

      64KB

    • memory/3364-1400-0x00000000080E0000-0x0000000008430000-memory.dmp

      Filesize

      3.3MB

    • memory/3364-1430-0x0000000007370000-0x0000000007380000-memory.dmp

      Filesize

      64KB

    • memory/3364-1429-0x000000007EA30000-0x000000007EA40000-memory.dmp

      Filesize

      64KB

    • memory/3364-1427-0x0000000009C00000-0x0000000009CA5000-memory.dmp

      Filesize

      660KB

    • memory/3364-1402-0x0000000008A30000-0x0000000008A7B000-memory.dmp

      Filesize

      300KB

    • memory/3364-1414-0x0000000007370000-0x0000000007380000-memory.dmp

      Filesize

      64KB

    • memory/3504-448-0x00000000092D0000-0x0000000009375000-memory.dmp

      Filesize

      660KB

    • memory/3504-425-0x0000000008220000-0x000000000826B000-memory.dmp

      Filesize

      300KB

    • memory/3504-424-0x0000000000C60000-0x0000000000C70000-memory.dmp

      Filesize

      64KB

    • memory/3504-423-0x0000000000C60000-0x0000000000C70000-memory.dmp

      Filesize

      64KB

    • memory/3504-422-0x0000000007A30000-0x0000000007D80000-memory.dmp

      Filesize

      3.3MB

    • memory/3504-504-0x000000007F240000-0x000000007F250000-memory.dmp

      Filesize

      64KB

    • memory/3504-506-0x0000000000C60000-0x0000000000C70000-memory.dmp

      Filesize

      64KB

    • memory/3608-418-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/3608-121-0x0000000003080000-0x000000000396B000-memory.dmp

      Filesize

      8.9MB

    • memory/3608-270-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

    • memory/3784-1739-0x0000000005350000-0x0000000005360000-memory.dmp

      Filesize

      64KB

    • memory/3784-1738-0x000000007F100000-0x000000007F110000-memory.dmp

      Filesize

      64KB

    • memory/3784-1646-0x0000000005350000-0x0000000005360000-memory.dmp

      Filesize

      64KB

    • memory/3784-1647-0x0000000005350000-0x0000000005360000-memory.dmp

      Filesize

      64KB

    • memory/4500-416-0x0000000005230000-0x0000000005240000-memory.dmp

      Filesize

      64KB

    • memory/4500-130-0x0000000007FA0000-0x0000000008006000-memory.dmp

      Filesize

      408KB

    • memory/4500-398-0x0000000007460000-0x0000000007468000-memory.dmp

      Filesize

      32KB

    • memory/4500-124-0x0000000005230000-0x0000000005240000-memory.dmp

      Filesize

      64KB

    • memory/4500-415-0x0000000005230000-0x0000000005240000-memory.dmp

      Filesize

      64KB

    • memory/4500-125-0x0000000004DA0000-0x0000000004DD6000-memory.dmp

      Filesize

      216KB

    • memory/4500-191-0x000000000A500000-0x000000000A51E000-memory.dmp

      Filesize

      120KB

    • memory/4500-126-0x0000000007970000-0x0000000007F98000-memory.dmp

      Filesize

      6.2MB

    • memory/4500-127-0x0000000005230000-0x0000000005240000-memory.dmp

      Filesize

      64KB

    • memory/4500-190-0x000000000A520000-0x000000000A553000-memory.dmp

      Filesize

      204KB

    • memory/4500-197-0x000000000A760000-0x000000000A7F4000-memory.dmp

      Filesize

      592KB

    • memory/4500-200-0x000000007FC10000-0x000000007FC20000-memory.dmp

      Filesize

      64KB

    • memory/4500-201-0x0000000005230000-0x0000000005240000-memory.dmp

      Filesize

      64KB

    • memory/4500-393-0x0000000007470000-0x000000000748A000-memory.dmp

      Filesize

      104KB

    • memory/4500-153-0x0000000008BD0000-0x0000000008C0C000-memory.dmp

      Filesize

      240KB

    • memory/4500-144-0x00000000095B0000-0x0000000009626000-memory.dmp

      Filesize

      472KB

    • memory/4500-133-0x0000000008B10000-0x0000000008B5B000-memory.dmp

      Filesize

      300KB

    • memory/4500-132-0x0000000008140000-0x000000000815C000-memory.dmp

      Filesize

      112KB

    • memory/4500-131-0x00000000082D0000-0x0000000008620000-memory.dmp

      Filesize

      3.3MB

    • memory/4500-196-0x000000000A560000-0x000000000A605000-memory.dmp

      Filesize

      660KB

    • memory/4500-129-0x0000000007890000-0x00000000078F6000-memory.dmp

      Filesize

      408KB

    • memory/4500-128-0x0000000007730000-0x0000000007752000-memory.dmp

      Filesize

      136KB

    • memory/4920-668-0x0000000004CC0000-0x0000000004CD0000-memory.dmp

      Filesize

      64KB

    • memory/4920-720-0x000000007E1B0000-0x000000007E1C0000-memory.dmp

      Filesize

      64KB

    • memory/4920-721-0x0000000004CC0000-0x0000000004CD0000-memory.dmp

      Filesize

      64KB

    • memory/4920-669-0x0000000004CC0000-0x0000000004CD0000-memory.dmp

      Filesize

      64KB