Analysis

  • max time kernel
    150s
  • max time network
    148s
  • 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 08:31

General

  • Target

    bcf26e5c60b8fdc77e01dda0347e08fbb8d34b109b4a48c9469b8d68de491fde.exe

  • Size

    4.1MB

  • MD5

    310e051c4e2781a3cd7bced24585ab6b

  • SHA1

    18bd6983988ecbcb6f9fe0e1f07e83e9e5337ac2

  • SHA256

    bcf26e5c60b8fdc77e01dda0347e08fbb8d34b109b4a48c9469b8d68de491fde

  • SHA512

    1a9a261d66a76b4363772c68a4d7a5cf7638c9eaac8bea3eef0d54407eb58a0e7029b8cf48dbb2b5e957bd7e7018c75a6e933c60f266a9bda82975b6a257c619

  • SSDEEP

    98304:hBrcvoQ3bpeAYFyI5s2iXAaDVcYvvxcUB482tlsgYA74q:hBQ8JjsJRJcupcUK8wlX7x

Malware Config

Signatures

  • Glupteba

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

  • Glupteba payload 15 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\bcf26e5c60b8fdc77e01dda0347e08fbb8d34b109b4a48c9469b8d68de491fde.exe
    "C:\Users\Admin\AppData\Local\Temp\bcf26e5c60b8fdc77e01dda0347e08fbb8d34b109b4a48c9469b8d68de491fde.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:840
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3068
    • C:\Users\Admin\AppData\Local\Temp\bcf26e5c60b8fdc77e01dda0347e08fbb8d34b109b4a48c9469b8d68de491fde.exe
      "C:\Users\Admin\AppData\Local\Temp\bcf26e5c60b8fdc77e01dda0347e08fbb8d34b109b4a48c9469b8d68de491fde.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:1320
      • 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:708
      • 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:4352
        • 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: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: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:2196
      • 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:4368
        • 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:912
        • 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:1088
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:1428
          • 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:4464
          • 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:4856
          • 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:4176
          • 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:3764

    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_jd21i31u.4ns.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

      ac4917a885cf6050b1a483e4bc4d2ea5

      SHA1

      b1c0a9f27bd21c6bbb8e9be70db8777b4a2a640f

      SHA256

      e39062a62c3c7617feeeff95ea8a0be51104a0d36f46e44eea22556fda74d8d9

      SHA512

      092c67a3ecae1d187cad72a8ea1ea37cb78a0cf79c2cd7fb88953e5990669a2e871267015762fd46d274badb88ac0c1d73b00f1df7394d89bed48a3a45c2ba3d

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

      19KB

      MD5

      006d60b68902df2951c31e8e79f4b2a7

      SHA1

      0e540605bda25a2cdd35539b3efa86a85922297a

      SHA256

      1caea2f1f43aba65abe1df0fa0efb3013cee6ffeb40638ee6bf228111c8c3a90

      SHA512

      13422b9a7ebf36a1e54fe7b822fcb40c74b8ec9ae496fc7b499b53ad0bab398f70fd769f3340219f2e79b3cb60a83d63207ac863c15fd715c80fc5d6532025a3

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

      19KB

      MD5

      3d6826ffad7b848eebc97b498dbe1829

      SHA1

      4f8cb4d059a4c7bbc61beff01718011cd73e4464

      SHA256

      0fb0f4fd87e40c599f1d64785f9ee2cacab566edb04a0e608ff82041728748ad

      SHA512

      bda6043517aa8c758ecd4b2f9c6c0d710d662bfcf5b4b7f2cf1ebe08d0396974a4585471572c6b02eb82c9d78ae9eb3d2f0f90396ffb9a707af93f194f92e48e

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

      19KB

      MD5

      6d4a9a466782c420c43335e24d4a7783

      SHA1

      7b56d3921212390b703230c6bcad20cb37ff5deb

      SHA256

      53480676c11a354c363e1a6e4532778a3aca3e49642a893d30ec85aaf75a7e5a

      SHA512

      859fd291ccb7c844c2cf9d516739aec689e89ece8ff1f94292ae8887716d59946810dca7a09842d77c3679cd5ae61d9e9384605ee325288c46016c8193a9fe67

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

      19KB

      MD5

      b139937fc15e15294b43ed8eb4d15f31

      SHA1

      b8bf22f44b3859dc29758de7a5e18272b41a9134

      SHA256

      95d3f39eb70018de022c2b291b77c403c1e99c0975f4db877d3375b0f7f89acc

      SHA512

      84f75f727042489f2bf4233766f6004e498007715e26a7022bae42b44114b188cac61311053008923248f296265f3cbbe13a57206b4e9d407792d4c89f7b81a6

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

      19KB

      MD5

      53393b9883247c28629f085227224b30

      SHA1

      99be3fab64fcee364814c2becfb4193a1fee2aac

      SHA256

      ccb6a8f918d47d2830a02164dd32258afc64182d5cd4804ed41200368399baf2

      SHA512

      a802896272181efa8aead16315533328b8cd5783c8d09858825838bbe1979c8e9343e254794c2f4b7441ee451b8ee92950bb83be4d3071df6fdcbe4fb66ddfd0

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

      4.1MB

      MD5

      310e051c4e2781a3cd7bced24585ab6b

      SHA1

      18bd6983988ecbcb6f9fe0e1f07e83e9e5337ac2

      SHA256

      bcf26e5c60b8fdc77e01dda0347e08fbb8d34b109b4a48c9469b8d68de491fde

      SHA512

      1a9a261d66a76b4363772c68a4d7a5cf7638c9eaac8bea3eef0d54407eb58a0e7029b8cf48dbb2b5e957bd7e7018c75a6e933c60f266a9bda82975b6a257c619

    • memory/708-73-0x0000000007AB0000-0x0000000007B54000-memory.dmp
      Filesize

      656KB

    • memory/708-59-0x0000000006340000-0x0000000006697000-memory.dmp
      Filesize

      3.3MB

    • memory/708-63-0x0000000070400000-0x000000007044C000-memory.dmp
      Filesize

      304KB

    • memory/708-64-0x0000000070610000-0x0000000070967000-memory.dmp
      Filesize

      3.3MB

    • memory/708-75-0x0000000007E50000-0x0000000007E65000-memory.dmp
      Filesize

      84KB

    • memory/708-74-0x0000000007E00000-0x0000000007E11000-memory.dmp
      Filesize

      68KB

    • memory/840-52-0x0000000005100000-0x00000000059EB000-memory.dmp
      Filesize

      8.9MB

    • memory/840-51-0x0000000003560000-0x000000000395C000-memory.dmp
      Filesize

      4.0MB

    • memory/840-50-0x0000000000400000-0x0000000002EDF000-memory.dmp
      Filesize

      42.9MB

    • memory/840-3-0x0000000000400000-0x0000000002EDF000-memory.dmp
      Filesize

      42.9MB

    • memory/840-2-0x0000000005100000-0x00000000059EB000-memory.dmp
      Filesize

      8.9MB

    • memory/840-1-0x0000000003560000-0x000000000395C000-memory.dmp
      Filesize

      4.0MB

    • memory/912-139-0x0000000070580000-0x00000000708D7000-memory.dmp
      Filesize

      3.3MB

    • memory/912-138-0x0000000070400000-0x000000007044C000-memory.dmp
      Filesize

      304KB

    • memory/1320-89-0x0000000000400000-0x0000000002EDF000-memory.dmp
      Filesize

      42.9MB

    • memory/1320-124-0x0000000000400000-0x0000000002EDF000-memory.dmp
      Filesize

      42.9MB

    • memory/2196-111-0x0000000070580000-0x00000000708D7000-memory.dmp
      Filesize

      3.3MB

    • memory/2196-110-0x0000000070400000-0x000000007044C000-memory.dmp
      Filesize

      304KB

    • memory/3068-26-0x0000000070580000-0x00000000708D7000-memory.dmp
      Filesize

      3.3MB

    • memory/3068-9-0x00000000056A0000-0x00000000056C2000-memory.dmp
      Filesize

      136KB

    • memory/3068-45-0x0000000007BE0000-0x0000000007BE8000-memory.dmp
      Filesize

      32KB

    • memory/3068-48-0x0000000074190000-0x0000000074941000-memory.dmp
      Filesize

      7.7MB

    • memory/3068-43-0x0000000007AC0000-0x0000000007AD5000-memory.dmp
      Filesize

      84KB

    • memory/3068-42-0x0000000007AB0000-0x0000000007ABE000-memory.dmp
      Filesize

      56KB

    • memory/3068-41-0x0000000007A70000-0x0000000007A81000-memory.dmp
      Filesize

      68KB

    • memory/3068-40-0x0000000007B00000-0x0000000007B96000-memory.dmp
      Filesize

      600KB

    • memory/3068-39-0x0000000007A40000-0x0000000007A4A000-memory.dmp
      Filesize

      40KB

    • memory/3068-38-0x0000000007A00000-0x0000000007A1A000-memory.dmp
      Filesize

      104KB

    • memory/3068-37-0x0000000008040000-0x00000000086BA000-memory.dmp
      Filesize

      6.5MB

    • memory/3068-36-0x00000000078E0000-0x0000000007984000-memory.dmp
      Filesize

      656KB

    • memory/3068-35-0x00000000078C0000-0x00000000078DE000-memory.dmp
      Filesize

      120KB

    • memory/3068-25-0x0000000070400000-0x000000007044C000-memory.dmp
      Filesize

      304KB

    • memory/3068-24-0x0000000007860000-0x0000000007894000-memory.dmp
      Filesize

      208KB

    • memory/3068-23-0x0000000006A10000-0x0000000006A56000-memory.dmp
      Filesize

      280KB

    • memory/3068-4-0x0000000004FD0000-0x0000000005006000-memory.dmp
      Filesize

      216KB

    • memory/3068-5-0x0000000074190000-0x0000000074941000-memory.dmp
      Filesize

      7.7MB

    • memory/3068-22-0x00000000064A0000-0x00000000064EC000-memory.dmp
      Filesize

      304KB

    • memory/3068-21-0x0000000006450000-0x000000000646E000-memory.dmp
      Filesize

      120KB

    • memory/3068-20-0x0000000005F80000-0x00000000062D7000-memory.dmp
      Filesize

      3.3MB

    • memory/3068-11-0x0000000005F10000-0x0000000005F76000-memory.dmp
      Filesize

      408KB

    • memory/3068-10-0x0000000005EA0000-0x0000000005F06000-memory.dmp
      Filesize

      408KB

    • memory/3068-44-0x0000000007BC0000-0x0000000007BDA000-memory.dmp
      Filesize

      104KB

    • memory/3068-8-0x00000000057C0000-0x0000000005DEA000-memory.dmp
      Filesize

      6.2MB

    • memory/3068-6-0x0000000005180000-0x0000000005190000-memory.dmp
      Filesize

      64KB

    • memory/3068-7-0x0000000005180000-0x0000000005190000-memory.dmp
      Filesize

      64KB

    • memory/4368-204-0x0000000000400000-0x0000000002EDF000-memory.dmp
      Filesize

      42.9MB

    • memory/4368-149-0x0000000000400000-0x0000000002EDF000-memory.dmp
      Filesize

      42.9MB

    • memory/4368-218-0x0000000000400000-0x0000000002EDF000-memory.dmp
      Filesize

      42.9MB

    • memory/4368-216-0x0000000000400000-0x0000000002EDF000-memory.dmp
      Filesize

      42.9MB

    • memory/4368-214-0x0000000000400000-0x0000000002EDF000-memory.dmp
      Filesize

      42.9MB

    • memory/4368-212-0x0000000000400000-0x0000000002EDF000-memory.dmp
      Filesize

      42.9MB

    • memory/4368-210-0x0000000000400000-0x0000000002EDF000-memory.dmp
      Filesize

      42.9MB

    • memory/4368-208-0x0000000000400000-0x0000000002EDF000-memory.dmp
      Filesize

      42.9MB

    • memory/4368-206-0x0000000000400000-0x0000000002EDF000-memory.dmp
      Filesize

      42.9MB

    • memory/4464-174-0x0000000007270000-0x0000000007314000-memory.dmp
      Filesize

      656KB

    • memory/4464-176-0x0000000005990000-0x00000000059A5000-memory.dmp
      Filesize

      84KB

    • memory/4464-175-0x00000000075E0000-0x00000000075F1000-memory.dmp
      Filesize

      68KB

    • memory/4464-160-0x0000000005B60000-0x0000000005EB7000-memory.dmp
      Filesize

      3.3MB

    • memory/4464-164-0x0000000070320000-0x000000007036C000-memory.dmp
      Filesize

      304KB

    • memory/4464-165-0x00000000704A0000-0x00000000707F7000-memory.dmp
      Filesize

      3.3MB

    • memory/4464-162-0x0000000006030000-0x000000000607C000-memory.dmp
      Filesize

      304KB

    • memory/4856-188-0x0000000070320000-0x000000007036C000-memory.dmp
      Filesize

      304KB

    • memory/4856-189-0x0000000070570000-0x00000000708C7000-memory.dmp
      Filesize

      3.3MB

    • memory/4856-178-0x00000000057D0000-0x0000000005B27000-memory.dmp
      Filesize

      3.3MB

    • memory/5012-91-0x0000000070580000-0x00000000708D7000-memory.dmp
      Filesize

      3.3MB

    • memory/5012-90-0x0000000070400000-0x000000007044C000-memory.dmp
      Filesize

      304KB