Analysis

  • max time kernel
    151s
  • max time network
    153s
  • 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 19:48

General

  • Target

    f1d96315e349f925324e2dafc8d79c62f5452c1bff6f2bad6410c515399982ae.exe

  • Size

    4.2MB

  • MD5

    3ecfb1c42ed4a76062a503b6010e8378

  • SHA1

    d6484ad8b903631d14c6f892770c8d0268cb9f3d

  • SHA256

    f1d96315e349f925324e2dafc8d79c62f5452c1bff6f2bad6410c515399982ae

  • SHA512

    3abe53d614c45757d689f48051db157ee15c647aab99ddcd585e1749fbd143b1438a1801587103053a25cc5651a491d762029cd7e379c7a32dbcc8553b126c0b

  • SSDEEP

    98304:N7xlQWUQJrx/VpUx5jTm4qCa4aWdF3j0chnIX4rRT:Bxqd9YP+rjRfVT

Malware Config

Signatures

  • Glupteba

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

  • Glupteba payload 16 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\f1d96315e349f925324e2dafc8d79c62f5452c1bff6f2bad6410c515399982ae.exe
    "C:\Users\Admin\AppData\Local\Temp\f1d96315e349f925324e2dafc8d79c62f5452c1bff6f2bad6410c515399982ae.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1468
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2840
    • C:\Users\Admin\AppData\Local\Temp\f1d96315e349f925324e2dafc8d79c62f5452c1bff6f2bad6410c515399982ae.exe
      "C:\Users\Admin\AppData\Local\Temp\f1d96315e349f925324e2dafc8d79c62f5452c1bff6f2bad6410c515399982ae.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:1076
      • 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:1112
      • 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:3764
        • 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:3184
      • 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:1212
      • 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:4796
      • 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:2952
        • 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:64
        • 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:1984
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:3020
          • 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:1128
          • 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:\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:3796
          • 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:3224

    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_squzoawe.spw.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

      d2aa712740978d423fe7228432c9af2e

      SHA1

      200971a04182e0069747a13c84eea6aed562241c

      SHA256

      e4bef995ac7176aa1b569fd6675a0356c04904fa244d94f32a205e5b68422223

      SHA512

      f20680b1d7c0f77943b9ea305c72942b9cc0429fb956038c8cf310233cc18c4485b01715a60a8aadba984c124b57373afbdf5cfbeb0e251f3f47b4689b516cbe

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

      19KB

      MD5

      bf23306b1ff7f40dae072e8395a1a473

      SHA1

      997c99b895894f7cf60adfbcd0ecc2bd78b29114

      SHA256

      25afe46dd78d7b202ebca30cea50bfc14521e78b1130f7460a148f27acb21b9c

      SHA512

      d3d5c917d1cfe7d0a06f3919f475d81a3cef86c70bb594d3ea8f86538482cd13fb52312a506745cb24a0d7addf97ec6cb115c31a3909bd6cca0980bbb27017b9

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

      19KB

      MD5

      6f69e1687653961189fcbca54b7b8d0c

      SHA1

      738b0c7583963f86f9ba548dae357bb735094d39

      SHA256

      323d107cdb4658237e3679c7fbb50f2f603641bc7786bf704d46fba0ad589879

      SHA512

      60b7fd5d088ef715dffc31c27b028c5854671e59926d9bde7a016fa5181a1e9a5ca841049159faa9367a613904ee11b1d7220edb3452f2095adb4c45b4e0b58e

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

      19KB

      MD5

      f000685fcad1d0af3e5839cbd0c8e201

      SHA1

      d0ad9637cdad78a53cb3150e195cde6f464ab75b

      SHA256

      c605b3021bc8e4afe270d9063bab0e57d57140e3a383545f0c1823b20a176327

      SHA512

      a395cf181a79275dcf6a9add602f63090c496fd085238150ccf5732cc71878c07f3806c228502a92a3f5026ce4bb3ade572f869cd3ecf481664731c3b3b78c9a

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

      19KB

      MD5

      e33655cdf8a3a1572ffdd07798d7aab3

      SHA1

      ec4110f1731f6f3ddd70834f481e6127bc3fd947

      SHA256

      5fa9e3759ad3d399d3b561e4397411bb71b38cc5814a23c8d5b079a19ae052e1

      SHA512

      2730b4e9453eaa721d9fea2e25802049f38ca7332428eaa72d5626a6662b9d925c92a8f63b3c12cbfee5fe2a7031ee462f13cec544318c41f29fb4a08286d41f

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

      4.2MB

      MD5

      3ecfb1c42ed4a76062a503b6010e8378

      SHA1

      d6484ad8b903631d14c6f892770c8d0268cb9f3d

      SHA256

      f1d96315e349f925324e2dafc8d79c62f5452c1bff6f2bad6410c515399982ae

      SHA512

      3abe53d614c45757d689f48051db157ee15c647aab99ddcd585e1749fbd143b1438a1801587103053a25cc5651a491d762029cd7e379c7a32dbcc8553b126c0b

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

      4.2MB

      MD5

      3ecfb1c42ed4a76062a503b6010e8378

      SHA1

      d6484ad8b903631d14c6f892770c8d0268cb9f3d

      SHA256

      f1d96315e349f925324e2dafc8d79c62f5452c1bff6f2bad6410c515399982ae

      SHA512

      3abe53d614c45757d689f48051db157ee15c647aab99ddcd585e1749fbd143b1438a1801587103053a25cc5651a491d762029cd7e379c7a32dbcc8553b126c0b

    • memory/64-268-0x00000000045B0000-0x00000000045C0000-memory.dmp
      Filesize

      64KB

    • memory/64-291-0x00000000045B0000-0x00000000045C0000-memory.dmp
      Filesize

      64KB

    • memory/64-280-0x0000000070400000-0x000000007044C000-memory.dmp
      Filesize

      304KB

    • memory/64-281-0x0000000070B40000-0x0000000070E94000-memory.dmp
      Filesize

      3.3MB

    • memory/64-269-0x00000000045B0000-0x00000000045C0000-memory.dmp
      Filesize

      64KB

    • memory/64-292-0x000000007FC90000-0x000000007FCA0000-memory.dmp
      Filesize

      64KB

    • memory/1076-220-0x0000000000400000-0x000000000295A000-memory.dmp
      Filesize

      37.4MB

    • memory/1076-265-0x0000000000400000-0x000000000295A000-memory.dmp
      Filesize

      37.4MB

    • memory/1112-191-0x0000000000D00000-0x0000000000D10000-memory.dmp
      Filesize

      64KB

    • memory/1112-192-0x0000000070400000-0x000000007044C000-memory.dmp
      Filesize

      304KB

    • memory/1112-190-0x0000000000D00000-0x0000000000D10000-memory.dmp
      Filesize

      64KB

    • memory/1112-193-0x0000000070B80000-0x0000000070ED4000-memory.dmp
      Filesize

      3.3MB

    • memory/1112-189-0x0000000000D00000-0x0000000000D10000-memory.dmp
      Filesize

      64KB

    • memory/1112-203-0x000000007F7C0000-0x000000007F7D0000-memory.dmp
      Filesize

      64KB

    • memory/1128-320-0x000000007F520000-0x000000007F530000-memory.dmp
      Filesize

      64KB

    • memory/1128-309-0x0000000070AB0000-0x0000000070E04000-memory.dmp
      Filesize

      3.3MB

    • memory/1128-319-0x0000000005280000-0x0000000005290000-memory.dmp
      Filesize

      64KB

    • memory/1128-300-0x0000000005280000-0x0000000005290000-memory.dmp
      Filesize

      64KB

    • memory/1128-305-0x0000000005280000-0x0000000005290000-memory.dmp
      Filesize

      64KB

    • memory/1128-308-0x0000000070320000-0x000000007036C000-memory.dmp
      Filesize

      304KB

    • memory/1212-219-0x0000000004CF0000-0x0000000004D00000-memory.dmp
      Filesize

      64KB

    • memory/1212-222-0x00000000705A0000-0x00000000708F4000-memory.dmp
      Filesize

      3.3MB

    • memory/1212-233-0x000000007F120000-0x000000007F130000-memory.dmp
      Filesize

      64KB

    • memory/1212-232-0x0000000004CF0000-0x0000000004D00000-memory.dmp
      Filesize

      64KB

    • memory/1212-218-0x0000000004CF0000-0x0000000004D00000-memory.dmp
      Filesize

      64KB

    • memory/1212-221-0x0000000070400000-0x000000007044C000-memory.dmp
      Filesize

      304KB

    • memory/1348-323-0x0000000002EB0000-0x0000000002EC0000-memory.dmp
      Filesize

      64KB

    • memory/1348-322-0x0000000002EB0000-0x0000000002EC0000-memory.dmp
      Filesize

      64KB

    • memory/1348-334-0x0000000002EB0000-0x0000000002EC0000-memory.dmp
      Filesize

      64KB

    • memory/1348-335-0x0000000070320000-0x000000007036C000-memory.dmp
      Filesize

      304KB

    • memory/1348-336-0x00000000704D0000-0x0000000070824000-memory.dmp
      Filesize

      3.3MB

    • memory/1348-346-0x000000007FA10000-0x000000007FA20000-memory.dmp
      Filesize

      64KB

    • memory/1468-173-0x0000000000400000-0x000000000295A000-memory.dmp
      Filesize

      37.4MB

    • memory/1468-206-0x0000000000400000-0x000000000295A000-memory.dmp
      Filesize

      37.4MB

    • memory/1468-134-0x0000000004DE0000-0x00000000056CB000-memory.dmp
      Filesize

      8.9MB

    • memory/2840-171-0x000000007F0B0000-0x000000007F0C0000-memory.dmp
      Filesize

      64KB

    • memory/2840-153-0x0000000007520000-0x0000000007596000-memory.dmp
      Filesize

      472KB

    • memory/2840-135-0x0000000002E50000-0x0000000002E86000-memory.dmp
      Filesize

      216KB

    • memory/2840-136-0x0000000005570000-0x0000000005B98000-memory.dmp
      Filesize

      6.2MB

    • memory/2840-137-0x0000000002E40000-0x0000000002E50000-memory.dmp
      Filesize

      64KB

    • memory/2840-138-0x0000000002E40000-0x0000000002E50000-memory.dmp
      Filesize

      64KB

    • memory/2840-139-0x0000000005420000-0x0000000005442000-memory.dmp
      Filesize

      136KB

    • memory/2840-176-0x0000000007B60000-0x0000000007B68000-memory.dmp
      Filesize

      32KB

    • memory/2840-175-0x0000000007C10000-0x0000000007C2A000-memory.dmp
      Filesize

      104KB

    • memory/2840-174-0x0000000007B20000-0x0000000007B2E000-memory.dmp
      Filesize

      56KB

    • memory/2840-172-0x0000000007B70000-0x0000000007C06000-memory.dmp
      Filesize

      600KB

    • memory/2840-170-0x0000000007AB0000-0x0000000007ABA000-memory.dmp
      Filesize

      40KB

    • memory/2840-169-0x0000000007960000-0x000000000797E000-memory.dmp
      Filesize

      120KB

    • memory/2840-159-0x0000000070580000-0x00000000708D4000-memory.dmp
      Filesize

      3.3MB

    • memory/2840-158-0x0000000070400000-0x000000007044C000-memory.dmp
      Filesize

      304KB

    • memory/2840-157-0x0000000007980000-0x00000000079B2000-memory.dmp
      Filesize

      200KB

    • memory/2840-156-0x00000000077C0000-0x00000000077DA000-memory.dmp
      Filesize

      104KB

    • memory/2840-155-0x0000000007E20000-0x000000000849A000-memory.dmp
      Filesize

      6.5MB

    • memory/2840-140-0x00000000054C0000-0x0000000005526000-memory.dmp
      Filesize

      408KB

    • memory/2840-141-0x0000000005D10000-0x0000000005D76000-memory.dmp
      Filesize

      408KB

    • memory/2840-154-0x0000000002E40000-0x0000000002E50000-memory.dmp
      Filesize

      64KB

    • memory/2840-152-0x0000000006970000-0x00000000069B4000-memory.dmp
      Filesize

      272KB

    • memory/2840-151-0x0000000006410000-0x000000000642E000-memory.dmp
      Filesize

      120KB

    • memory/2952-364-0x0000000000400000-0x000000000295A000-memory.dmp
      Filesize

      37.4MB

    • memory/2952-362-0x0000000000400000-0x000000000295A000-memory.dmp
      Filesize

      37.4MB

    • memory/2952-356-0x0000000000400000-0x000000000295A000-memory.dmp
      Filesize

      37.4MB

    • memory/2952-372-0x0000000000400000-0x000000000295A000-memory.dmp
      Filesize

      37.4MB

    • memory/2952-358-0x0000000000400000-0x000000000295A000-memory.dmp
      Filesize

      37.4MB

    • memory/2952-307-0x0000000000400000-0x000000000295A000-memory.dmp
      Filesize

      37.4MB

    • memory/2952-370-0x0000000000400000-0x000000000295A000-memory.dmp
      Filesize

      37.4MB

    • memory/2952-360-0x0000000000400000-0x000000000295A000-memory.dmp
      Filesize

      37.4MB

    • memory/2952-368-0x0000000000400000-0x000000000295A000-memory.dmp
      Filesize

      37.4MB

    • memory/2952-366-0x0000000000400000-0x000000000295A000-memory.dmp
      Filesize

      37.4MB

    • memory/2952-354-0x0000000000400000-0x000000000295A000-memory.dmp
      Filesize

      37.4MB

    • memory/4796-248-0x0000000070B80000-0x0000000070ED4000-memory.dmp
      Filesize

      3.3MB

    • memory/4796-259-0x000000007F6C0000-0x000000007F6D0000-memory.dmp
      Filesize

      64KB

    • memory/4796-247-0x0000000070400000-0x000000007044C000-memory.dmp
      Filesize

      304KB

    • memory/4796-235-0x0000000004980000-0x0000000004990000-memory.dmp
      Filesize

      64KB

    • memory/4796-258-0x0000000004980000-0x0000000004990000-memory.dmp
      Filesize

      64KB

    • memory/4796-241-0x0000000004980000-0x0000000004990000-memory.dmp
      Filesize

      64KB