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Analysis

  • max time kernel
    66s
  • max time network
    66s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240221-en
  • resource tags

    arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    26/03/2024, 10:50

General

  • Target

    2550f80732159b01dd34c1c9a3152033e7ac7ac2c9a643d966c4b75a585ca45f.exe

  • Size

    4.2MB

  • MD5

    980ba92a9990c31fe95f50a3a0484d9b

  • SHA1

    7d65262637388c6ff2e3d7a81c1d41852210f39e

  • SHA256

    2550f80732159b01dd34c1c9a3152033e7ac7ac2c9a643d966c4b75a585ca45f

  • SHA512

    bd26029fea9708d80c0dd90aad91210fe7c95b0e2d1dcd635540d7c4812b33439a2a81e202e899c870f1336bc79e88229933ec3986bb45bdb55c63a0d4a84009

  • SSDEEP

    98304:7Qx1mA16Q9J7UePP+dPnQjqZi7LPRPOwseq2a6JLSzHqqZL9C:M1me6QH4ePoPZALPRP/Qqws

Malware Config

Signatures

  • Glupteba

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

  • Glupteba payload 13 IoCs
  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • 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
  • Program crash 2 IoCs
  • Creates scheduled task(s) 1 TTPs 1 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 42 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\2550f80732159b01dd34c1c9a3152033e7ac7ac2c9a643d966c4b75a585ca45f.exe
    "C:\Users\Admin\AppData\Local\Temp\2550f80732159b01dd34c1c9a3152033e7ac7ac2c9a643d966c4b75a585ca45f.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2044
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:824
    • C:\Users\Admin\AppData\Local\Temp\2550f80732159b01dd34c1c9a3152033e7ac7ac2c9a643d966c4b75a585ca45f.exe
      "C:\Users\Admin\AppData\Local\Temp\2550f80732159b01dd34c1c9a3152033e7ac7ac2c9a643d966c4b75a585ca45f.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:4284
      • 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:968
      • 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:1988
        • 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:956
      • 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:3232
      • 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:4736
      • C:\Windows\rss\csrss.exe
        C:\Windows\rss\csrss.exe
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1668
        • 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:4852
        • 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:2936
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:3048
          • 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:1336
          • 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:1968
          • 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:2928
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4284 -s 824
          3⤵
          • Program crash
          PID:3056
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2044 -s 796
        2⤵
        • Program crash
        PID:4588
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 2044 -ip 2044
      1⤵
        PID:3940
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 4284 -ip 4284
        1⤵
          PID:2664

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_hvastewx.z4m.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

          5f4d9d6d2dad1f485d05b879bafc47d9

          SHA1

          0bc3e30631b995cdb0129741c3db2df8edce76cc

          SHA256

          f088397ec42b29886448218abb3b84ec0237e05dbbc6a06246597632d4337111

          SHA512

          281fc32987cb22a0c336ad02fead0ae92bd4eac66caccfc89350e247d314279409add10ce5e95c91d5c47627aeb31a5c15369e272b88e9c48457b1c5d487d539

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

          Filesize

          19KB

          MD5

          ba87f2f59569fd4100cfa1524c80cfc0

          SHA1

          37ca1f4698504af8b8124440874960641e8333a2

          SHA256

          3924562d3a7896479971f8d4df4763f936d883a90050b33dd1a35b2daaa62ab1

          SHA512

          f211e4a584af65677f409c6b9b6027569d97b196897827cc6911202be872dd7242dad47e5ba80a43e4155ae6647863afc56824c3fdda363b5b0076c097b0f4a7

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

          Filesize

          19KB

          MD5

          672bde4e200fd1287a9307e03d244269

          SHA1

          f3573eb754b4c02743f2553a22f3003a58640fec

          SHA256

          ab6c3241f8960e00a45a6da4a6f4c41044bd90814c6f3cf3557adbf5a0e62dd8

          SHA512

          0b47288aa2b4a58841f96e39fffedacba56fe84cf916b613034bb30c7756f579bd8e0b9ca4af5938afd39d72c46777a77a00d7665051b2e8c74e3966c4a0515e

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

          Filesize

          19KB

          MD5

          61ec988ba8fa02e911522347e6b8f51c

          SHA1

          0c049b5a32961c1d90e1c80c9b64eb038157ab30

          SHA256

          30cc6d196e6bd1110aae1cdf27dd55f5fe78d30de046ea31e8c61d11c877afe1

          SHA512

          dd38ba1c61cef7fdc21d00240f8da8e9087d8bc2955652d2fcb94629818c2b8f2fe1f89dfb4bd477d5f6e1f0468269b66edbb38d2495c0844e8f58c908fe2bc1

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

          Filesize

          19KB

          MD5

          77817b85fc3530e52a4189e4e9b796f0

          SHA1

          b4a7c8c28703b87dd5c72d24cda638eca91e8dc3

          SHA256

          8440e03a6e8d52b8352c4ab5198ead412a5bccf890f40bf3bbbf920b9e111e8f

          SHA512

          0866547f57afd761729873fd08660adaef07f85cce5d38a0410d3bbc6942185e6eb21a3a656b8bba7c25e64515ba6c3558a7afa6beda78997c51943da8406d1a

        • C:\Windows\rss\csrss.exe

          Filesize

          4.2MB

          MD5

          980ba92a9990c31fe95f50a3a0484d9b

          SHA1

          7d65262637388c6ff2e3d7a81c1d41852210f39e

          SHA256

          2550f80732159b01dd34c1c9a3152033e7ac7ac2c9a643d966c4b75a585ca45f

          SHA512

          bd26029fea9708d80c0dd90aad91210fe7c95b0e2d1dcd635540d7c4812b33439a2a81e202e899c870f1336bc79e88229933ec3986bb45bdb55c63a0d4a84009

        • memory/824-26-0x0000000006E70000-0x0000000006EA4000-memory.dmp

          Filesize

          208KB

        • memory/824-40-0x0000000007000000-0x000000000701A000-memory.dmp

          Filesize

          104KB

        • memory/824-10-0x0000000005390000-0x00000000053F6000-memory.dmp

          Filesize

          408KB

        • memory/824-20-0x00000000054F0000-0x0000000005847000-memory.dmp

          Filesize

          3.3MB

        • memory/824-21-0x0000000005A40000-0x0000000005A5E000-memory.dmp

          Filesize

          120KB

        • memory/824-22-0x0000000005A80000-0x0000000005ACC000-memory.dmp

          Filesize

          304KB

        • memory/824-23-0x0000000005FD0000-0x0000000006016000-memory.dmp

          Filesize

          280KB

        • memory/824-24-0x00000000025F0000-0x0000000002600000-memory.dmp

          Filesize

          64KB

        • memory/824-25-0x000000007EFD0000-0x000000007EFE0000-memory.dmp

          Filesize

          64KB

        • memory/824-9-0x0000000004B60000-0x0000000004B82000-memory.dmp

          Filesize

          136KB

        • memory/824-27-0x0000000070210000-0x000000007025C000-memory.dmp

          Filesize

          304KB

        • memory/824-28-0x0000000070390000-0x00000000706E7000-memory.dmp

          Filesize

          3.3MB

        • memory/824-37-0x0000000006E50000-0x0000000006E6E000-memory.dmp

          Filesize

          120KB

        • memory/824-38-0x0000000006EB0000-0x0000000006F54000-memory.dmp

          Filesize

          656KB

        • memory/824-39-0x0000000007640000-0x0000000007CBA000-memory.dmp

          Filesize

          6.5MB

        • memory/824-11-0x0000000005400000-0x0000000005466000-memory.dmp

          Filesize

          408KB

        • memory/824-41-0x0000000007040000-0x000000000704A000-memory.dmp

          Filesize

          40KB

        • memory/824-42-0x0000000007150000-0x00000000071E6000-memory.dmp

          Filesize

          600KB

        • memory/824-43-0x0000000007060000-0x0000000007071000-memory.dmp

          Filesize

          68KB

        • memory/824-44-0x00000000070B0000-0x00000000070BE000-memory.dmp

          Filesize

          56KB

        • memory/824-46-0x00000000070C0000-0x00000000070D5000-memory.dmp

          Filesize

          84KB

        • memory/824-8-0x0000000004D60000-0x000000000538A000-memory.dmp

          Filesize

          6.2MB

        • memory/824-47-0x0000000007110000-0x000000000712A000-memory.dmp

          Filesize

          104KB

        • memory/824-48-0x0000000007100000-0x0000000007108000-memory.dmp

          Filesize

          32KB

        • memory/824-51-0x0000000073FA0000-0x0000000074751000-memory.dmp

          Filesize

          7.7MB

        • memory/824-7-0x00000000025F0000-0x0000000002600000-memory.dmp

          Filesize

          64KB

        • memory/824-6-0x00000000025F0000-0x0000000002600000-memory.dmp

          Filesize

          64KB

        • memory/824-5-0x0000000073FA0000-0x0000000074751000-memory.dmp

          Filesize

          7.7MB

        • memory/824-4-0x0000000002560000-0x0000000002596000-memory.dmp

          Filesize

          216KB

        • memory/968-59-0x0000000004910000-0x0000000004920000-memory.dmp

          Filesize

          64KB

        • memory/968-84-0x0000000007210000-0x0000000007225000-memory.dmp

          Filesize

          84KB

        • memory/968-87-0x0000000074040000-0x00000000747F1000-memory.dmp

          Filesize

          7.7MB

        • memory/968-60-0x0000000004910000-0x0000000004920000-memory.dmp

          Filesize

          64KB

        • memory/968-66-0x0000000005760000-0x0000000005AB7000-memory.dmp

          Filesize

          3.3MB

        • memory/968-70-0x0000000005FA0000-0x0000000005FEC000-memory.dmp

          Filesize

          304KB

        • memory/968-71-0x0000000004910000-0x0000000004920000-memory.dmp

          Filesize

          64KB

        • memory/968-72-0x0000000070320000-0x000000007036C000-memory.dmp

          Filesize

          304KB

        • memory/968-73-0x0000000070530000-0x0000000070887000-memory.dmp

          Filesize

          3.3MB

        • memory/968-82-0x0000000006EC0000-0x0000000006F64000-memory.dmp

          Filesize

          656KB

        • memory/968-83-0x00000000071A0000-0x00000000071B1000-memory.dmp

          Filesize

          68KB

        • memory/968-58-0x0000000074040000-0x00000000747F1000-memory.dmp

          Filesize

          7.7MB

        • memory/1668-248-0x0000000000400000-0x0000000000ED8000-memory.dmp

          Filesize

          10.8MB

        • memory/1668-214-0x0000000000400000-0x0000000000ED8000-memory.dmp

          Filesize

          10.8MB

        • memory/2044-1-0x0000000002EC0000-0x00000000032C3000-memory.dmp

          Filesize

          4.0MB

        • memory/2044-57-0x0000000000400000-0x0000000000ED8000-memory.dmp

          Filesize

          10.8MB

        • memory/2044-54-0x00000000032D0000-0x0000000003BBB000-memory.dmp

          Filesize

          8.9MB

        • memory/2044-52-0x0000000002EC0000-0x00000000032C3000-memory.dmp

          Filesize

          4.0MB

        • memory/2044-45-0x0000000000400000-0x0000000000ED8000-memory.dmp

          Filesize

          10.8MB

        • memory/2044-2-0x00000000032D0000-0x0000000003BBB000-memory.dmp

          Filesize

          8.9MB

        • memory/2044-3-0x0000000000400000-0x0000000000ED8000-memory.dmp

          Filesize

          10.8MB

        • memory/3232-90-0x0000000074040000-0x00000000747F1000-memory.dmp

          Filesize

          7.7MB

        • memory/3232-105-0x0000000005400000-0x0000000005410000-memory.dmp

          Filesize

          64KB

        • memory/3232-107-0x000000007FBD0000-0x000000007FBE0000-memory.dmp

          Filesize

          64KB

        • memory/3232-106-0x0000000070320000-0x000000007036C000-memory.dmp

          Filesize

          304KB

        • memory/3232-108-0x00000000704A0000-0x00000000707F7000-memory.dmp

          Filesize

          3.3MB

        • memory/3232-118-0x0000000074040000-0x00000000747F1000-memory.dmp

          Filesize

          7.7MB

        • memory/3232-102-0x0000000005400000-0x0000000005410000-memory.dmp

          Filesize

          64KB

        • memory/3232-91-0x0000000005400000-0x0000000005410000-memory.dmp

          Filesize

          64KB

        • memory/3232-100-0x0000000006470000-0x00000000067C7000-memory.dmp

          Filesize

          3.3MB

        • memory/4284-104-0x0000000000400000-0x0000000000ED8000-memory.dmp

          Filesize

          10.8MB

        • memory/4284-55-0x0000000002C50000-0x0000000003053000-memory.dmp

          Filesize

          4.0MB

        • memory/4284-132-0x0000000000400000-0x0000000000ED8000-memory.dmp

          Filesize

          10.8MB

        • memory/4284-151-0x0000000000400000-0x0000000000ED8000-memory.dmp

          Filesize

          10.8MB

        • memory/4284-56-0x0000000000400000-0x0000000000ED8000-memory.dmp

          Filesize

          10.8MB

        • memory/4284-101-0x0000000002C50000-0x0000000003053000-memory.dmp

          Filesize

          4.0MB

        • memory/4284-88-0x0000000000400000-0x0000000000ED8000-memory.dmp

          Filesize

          10.8MB

        • memory/4736-133-0x00000000049A0000-0x00000000049B0000-memory.dmp

          Filesize

          64KB

        • memory/4736-122-0x00000000057A0000-0x0000000005AF7000-memory.dmp

          Filesize

          3.3MB

        • memory/4736-121-0x00000000049A0000-0x00000000049B0000-memory.dmp

          Filesize

          64KB

        • memory/4736-120-0x00000000049A0000-0x00000000049B0000-memory.dmp

          Filesize

          64KB

        • memory/4736-119-0x0000000074040000-0x00000000747F1000-memory.dmp

          Filesize

          7.7MB