Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07-06-2023 15:56

General

  • Target

    299dae59fd9c4586f7a58450463570d0ebb4521f7c0f3092439568ce1bfd4bd0.exe

  • Size

    4.2MB

  • MD5

    c424a7bdc377c4f737d7576e6e584c5b

  • SHA1

    75e6139af0541d497b506d40f0506c1126da9467

  • SHA256

    299dae59fd9c4586f7a58450463570d0ebb4521f7c0f3092439568ce1bfd4bd0

  • SHA512

    8283c3b7115e362cb94e7ae01c2c2fec13d32794326f2fbbd4801adafd455c0a7e9067e9298b121ae3350db145b8f474312aaecd96857c771d3714113db3c4c8

  • SSDEEP

    98304:gXBXbxwMASR72enw18wQxWVMeT7u+9UVKOQ5LwfsZVd:8BLxkG72BAWVJXuzQ5L9

Malware Config

Signatures

  • Glupteba

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

  • Glupteba payload 17 IoCs
  • Modifies Windows Firewall 1 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\299dae59fd9c4586f7a58450463570d0ebb4521f7c0f3092439568ce1bfd4bd0.exe
    "C:\Users\Admin\AppData\Local\Temp\299dae59fd9c4586f7a58450463570d0ebb4521f7c0f3092439568ce1bfd4bd0.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1860
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3392
    • C:\Users\Admin\AppData\Local\Temp\299dae59fd9c4586f7a58450463570d0ebb4521f7c0f3092439568ce1bfd4bd0.exe
      "C:\Users\Admin\AppData\Local\Temp\299dae59fd9c4586f7a58450463570d0ebb4521f7c0f3092439568ce1bfd4bd0.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:4636
      • 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:5068
      • 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:3756
        • 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:3432
      • 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:2948
      • 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:2624
      • 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:1240
        • 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:1040
        • 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:2364
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:4660
          • 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:2252
          • 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:3756
          • 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:4372
          • 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:4768

    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

    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_izc1wue3.3em.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:\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

      beacfee320eb3c7535be3f5ed55cef54

      SHA1

      6797804ae0662d78bca618249f39a143c5c5f196

      SHA256

      9f78b63745136db2fc79cca282bb3289e67c393ba4be2025add4400f5f66b373

      SHA512

      71bc87c644418803844815d76b240dd3b1185de8a7e2e9d20fd74398e50fd13d2c6312a0e15bfdc8e4ea81a461e7ac3a3e711066e6ad29447a048c2672ee9b57

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

      19KB

      MD5

      38a99938582ba87e6eedb648fa3a7c02

      SHA1

      96e3ec8c9e705ab37cbc9ed2a92009bd517d4bc4

      SHA256

      5fe0e1b99abd8c57749e9736ac4fcb39f5f45c76febdf86f71fb12b72d51adeb

      SHA512

      4f18681dab9863212adcf57900766729fd9d6e133686c34b1e076ef9bc491134c2f381d95e3c01881cc010591a1c397f3b21b677881d9f547318ba02135d421f

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

      19KB

      MD5

      9a975d7752ce062c79d82cc7dac2598e

      SHA1

      f5db21d8752b2d3314c8c5b0a867e42926f0bd8a

      SHA256

      4f98a6f7910504a18e6963dead4c265b717ddf21388bf6b796e2bcb18a8e77e2

      SHA512

      111eb0c6672cc7265b37856db465b5887d8e736dd35a10da8e7a856021605b9d8344cd9c923f9d8be3a661d915e3c0a01ab76ba9f4be60cd4c65f7a7a17a04a2

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

      19KB

      MD5

      928cb2912cbe36d16821cd76f33664b0

      SHA1

      3b7d2917df708258044aae97c80cde85d74b514c

      SHA256

      de747d2abbff8df73fd10b87ba602848c97cad913531286f6b2a3f2af86aa763

      SHA512

      f347f21a9deb4b3698a51de0e7e1cb005f77d3a3c0c0f0732cec8eb9760612d706653786168c861dcfcfc02322a444fe34562e10b6f5c0738f8d71ee2cf824f3

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

      19KB

      MD5

      5700f3a60b4f6a440177c8d17fe2fc6d

      SHA1

      c403016ed4cf69c89f39fe80b0de57e2daf17662

      SHA256

      7793811aa370582ff12e7f488d79e12b476a56d8e796a0b501c110dca56314c5

      SHA512

      60e9d83f918f03150ce2fa696d80ff2fa0cbb587843c4174ec003723e503703a4c3ae78db262d03bf0a3767df7189c0b82d45084f118117c387ef7b158a5859b

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

      4.2MB

      MD5

      c424a7bdc377c4f737d7576e6e584c5b

      SHA1

      75e6139af0541d497b506d40f0506c1126da9467

      SHA256

      299dae59fd9c4586f7a58450463570d0ebb4521f7c0f3092439568ce1bfd4bd0

      SHA512

      8283c3b7115e362cb94e7ae01c2c2fec13d32794326f2fbbd4801adafd455c0a7e9067e9298b121ae3350db145b8f474312aaecd96857c771d3714113db3c4c8

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

      4.2MB

      MD5

      c424a7bdc377c4f737d7576e6e584c5b

      SHA1

      75e6139af0541d497b506d40f0506c1126da9467

      SHA256

      299dae59fd9c4586f7a58450463570d0ebb4521f7c0f3092439568ce1bfd4bd0

      SHA512

      8283c3b7115e362cb94e7ae01c2c2fec13d32794326f2fbbd4801adafd455c0a7e9067e9298b121ae3350db145b8f474312aaecd96857c771d3714113db3c4c8

    • memory/1040-275-0x0000000004E80000-0x0000000004E90000-memory.dmp
      Filesize

      64KB

    • memory/1040-287-0x0000000004E80000-0x0000000004E90000-memory.dmp
      Filesize

      64KB

    • memory/1040-276-0x0000000070130000-0x000000007017C000-memory.dmp
      Filesize

      304KB

    • memory/1040-277-0x00000000708D0000-0x0000000070C24000-memory.dmp
      Filesize

      3.3MB

    • memory/1040-288-0x000000007EE20000-0x000000007EE30000-memory.dmp
      Filesize

      64KB

    • memory/1240-364-0x0000000000400000-0x000000000295A000-memory.dmp
      Filesize

      37.4MB

    • memory/1240-352-0x0000000000400000-0x000000000295A000-memory.dmp
      Filesize

      37.4MB

    • memory/1240-348-0x0000000000400000-0x000000000295A000-memory.dmp
      Filesize

      37.4MB

    • memory/1240-360-0x0000000000400000-0x000000000295A000-memory.dmp
      Filesize

      37.4MB

    • memory/1240-366-0x0000000000400000-0x000000000295A000-memory.dmp
      Filesize

      37.4MB

    • memory/1240-362-0x0000000000400000-0x000000000295A000-memory.dmp
      Filesize

      37.4MB

    • memory/1240-350-0x0000000000400000-0x000000000295A000-memory.dmp
      Filesize

      37.4MB

    • memory/1240-354-0x0000000000400000-0x000000000295A000-memory.dmp
      Filesize

      37.4MB

    • memory/1240-356-0x0000000000400000-0x000000000295A000-memory.dmp
      Filesize

      37.4MB

    • memory/1240-315-0x0000000000400000-0x000000000295A000-memory.dmp
      Filesize

      37.4MB

    • memory/1240-358-0x0000000000400000-0x000000000295A000-memory.dmp
      Filesize

      37.4MB

    • memory/1860-172-0x0000000004B80000-0x000000000546B000-memory.dmp
      Filesize

      8.9MB

    • memory/1860-134-0x0000000004B80000-0x000000000546B000-memory.dmp
      Filesize

      8.9MB

    • memory/1860-191-0x0000000000400000-0x000000000295A000-memory.dmp
      Filesize

      37.4MB

    • memory/1860-169-0x0000000000400000-0x000000000295A000-memory.dmp
      Filesize

      37.4MB

    • memory/2252-313-0x000000007F4B0000-0x000000007F4C0000-memory.dmp
      Filesize

      64KB

    • memory/2252-303-0x00000000707E0000-0x0000000070B34000-memory.dmp
      Filesize

      3.3MB

    • memory/2252-302-0x0000000070050000-0x000000007009C000-memory.dmp
      Filesize

      304KB

    • memory/2252-301-0x0000000004AB0000-0x0000000004AC0000-memory.dmp
      Filesize

      64KB

    • memory/2624-243-0x0000000004A10000-0x0000000004A20000-memory.dmp
      Filesize

      64KB

    • memory/2624-257-0x000000007FD70000-0x000000007FD80000-memory.dmp
      Filesize

      64KB

    • memory/2624-244-0x0000000004A10000-0x0000000004A20000-memory.dmp
      Filesize

      64KB

    • memory/2624-245-0x0000000070130000-0x000000007017C000-memory.dmp
      Filesize

      304KB

    • memory/2624-246-0x00000000708B0000-0x0000000070C04000-memory.dmp
      Filesize

      3.3MB

    • memory/2624-256-0x0000000004A10000-0x0000000004A20000-memory.dmp
      Filesize

      64KB

    • memory/2948-218-0x0000000002DE0000-0x0000000002DF0000-memory.dmp
      Filesize

      64KB

    • memory/2948-220-0x0000000070130000-0x000000007017C000-memory.dmp
      Filesize

      304KB

    • memory/2948-221-0x00000000708D0000-0x0000000070C24000-memory.dmp
      Filesize

      3.3MB

    • memory/2948-219-0x0000000002DE0000-0x0000000002DF0000-memory.dmp
      Filesize

      64KB

    • memory/3392-168-0x00000000070B0000-0x00000000070CE000-memory.dmp
      Filesize

      120KB

    • memory/3392-138-0x0000000004C80000-0x0000000004CA2000-memory.dmp
      Filesize

      136KB

    • memory/3392-174-0x0000000007270000-0x000000000727E000-memory.dmp
      Filesize

      56KB

    • memory/3392-135-0x00000000025C0000-0x00000000025F6000-memory.dmp
      Filesize

      216KB

    • memory/3392-173-0x00000000072C0000-0x0000000007356000-memory.dmp
      Filesize

      600KB

    • memory/3392-176-0x00000000072B0000-0x00000000072B8000-memory.dmp
      Filesize

      32KB

    • memory/3392-171-0x000000007FBA0000-0x000000007FBB0000-memory.dmp
      Filesize

      64KB

    • memory/3392-136-0x00000000025B0000-0x00000000025C0000-memory.dmp
      Filesize

      64KB

    • memory/3392-170-0x0000000007200000-0x000000000720A000-memory.dmp
      Filesize

      40KB

    • memory/3392-137-0x0000000004D00000-0x0000000005328000-memory.dmp
      Filesize

      6.2MB

    • memory/3392-158-0x00000000708D0000-0x0000000070C24000-memory.dmp
      Filesize

      3.3MB

    • memory/3392-155-0x00000000025B0000-0x00000000025C0000-memory.dmp
      Filesize

      64KB

    • memory/3392-139-0x00000000053A0000-0x0000000005406000-memory.dmp
      Filesize

      408KB

    • memory/3392-140-0x0000000005410000-0x0000000005476000-memory.dmp
      Filesize

      408KB

    • memory/3392-150-0x0000000005B60000-0x0000000005B7E000-memory.dmp
      Filesize

      120KB

    • memory/3392-157-0x0000000070130000-0x000000007017C000-memory.dmp
      Filesize

      304KB

    • memory/3392-156-0x00000000070D0000-0x0000000007102000-memory.dmp
      Filesize

      200KB

    • memory/3392-175-0x0000000007360000-0x000000000737A000-memory.dmp
      Filesize

      104KB

    • memory/3392-151-0x00000000060C0000-0x0000000006104000-memory.dmp
      Filesize

      272KB

    • memory/3392-152-0x0000000006E90000-0x0000000006F06000-memory.dmp
      Filesize

      472KB

    • memory/3392-153-0x0000000007590000-0x0000000007C0A000-memory.dmp
      Filesize

      6.5MB

    • memory/3392-154-0x0000000006F10000-0x0000000006F2A000-memory.dmp
      Filesize

      104KB

    • memory/3756-327-0x0000000005320000-0x0000000005330000-memory.dmp
      Filesize

      64KB

    • memory/3756-328-0x0000000070050000-0x000000007009C000-memory.dmp
      Filesize

      304KB

    • memory/3756-330-0x000000007F890000-0x000000007F8A0000-memory.dmp
      Filesize

      64KB

    • memory/3756-331-0x00000000701F0000-0x0000000070544000-memory.dmp
      Filesize

      3.3MB

    • memory/3756-329-0x0000000005320000-0x0000000005330000-memory.dmp
      Filesize

      64KB

    • memory/3756-326-0x0000000005320000-0x0000000005330000-memory.dmp
      Filesize

      64KB

    • memory/4636-206-0x0000000000400000-0x000000000295A000-memory.dmp
      Filesize

      37.4MB

    • memory/4636-264-0x0000000000400000-0x000000000295A000-memory.dmp
      Filesize

      37.4MB

    • memory/5068-193-0x00000000708B0000-0x0000000070C04000-memory.dmp
      Filesize

      3.3MB

    • memory/5068-203-0x0000000004D00000-0x0000000004D10000-memory.dmp
      Filesize

      64KB

    • memory/5068-190-0x0000000004D00000-0x0000000004D10000-memory.dmp
      Filesize

      64KB

    • memory/5068-192-0x0000000070130000-0x000000007017C000-memory.dmp
      Filesize

      304KB

    • memory/5068-189-0x0000000004D00000-0x0000000004D10000-memory.dmp
      Filesize

      64KB