Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    19/04/2024, 19:41

General

  • Target

    24e22690959c975561523ec9dd8255cc9367b3755d109bd4550a88e8a88ebf8c.exe

  • Size

    4.2MB

  • MD5

    a3bb61cff2149475014e8c285e48f2fb

  • SHA1

    7baafc7f3b94c14d4a05a69cb9f2b151af2d541d

  • SHA256

    24e22690959c975561523ec9dd8255cc9367b3755d109bd4550a88e8a88ebf8c

  • SHA512

    ecf825f0338f9fa871c328dc10493d808ab9315fb75c736e4a54bf1e7302365312f10128635a2940b1402827e219b6a87ec07abe5fc2c6f16593a214a893785b

  • SSDEEP

    98304:aChC/hFO80L+t/wLiRU21IjdLRD45lSQeb0Kza87aMx:dh+FA+Cifk45cQeb08aKak

Malware Config

Signatures

  • Glupteba

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

  • Glupteba payload 22 IoCs
  • Windows security bypass 2 TTPs 7 IoCs
  • Detects Windows executables referencing non-Windows User-Agents 19 IoCs
  • Detects executables Discord URL observed in first stage droppers 19 IoCs
  • Detects executables containing URLs to raw contents of a Github gist 19 IoCs
  • Detects executables containing artifacts associated with disabling Widnows Defender 19 IoCs
  • Detects executables referencing many varying, potentially fake Windows User-Agents 19 IoCs
  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 9 IoCs
  • Windows security modification 2 TTPs 7 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.

  • 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 3 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
  • Modifies system certificate store 2 TTPs 7 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 15 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\24e22690959c975561523ec9dd8255cc9367b3755d109bd4550a88e8a88ebf8c.exe
    "C:\Users\Admin\AppData\Local\Temp\24e22690959c975561523ec9dd8255cc9367b3755d109bd4550a88e8a88ebf8c.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:2004
    • C:\Users\Admin\AppData\Local\Temp\24e22690959c975561523ec9dd8255cc9367b3755d109bd4550a88e8a88ebf8c.exe
      "C:\Users\Admin\AppData\Local\Temp\24e22690959c975561523ec9dd8255cc9367b3755d109bd4550a88e8a88ebf8c.exe"
      2⤵
      • Windows security bypass
      • Loads dropped DLL
      • 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:2628
      • 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:2148
        • 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:2416
      • C:\Windows\rss\csrss.exe
        C:\Windows\rss\csrss.exe
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Modifies system certificate store
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2832
        • 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:1244
        • C:\Windows\system32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:1604
          • C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe
            "C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe"
            4⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Modifies system certificate store
            PID:1620
          • 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:2496
    • C:\Windows\system32\makecab.exe
      "C:\Windows\system32\makecab.exe" C:\Windows\Logs\CBS\CbsPersist_20240419194151.log C:\Windows\Logs\CBS\CbsPersist_20240419194151.cab
      1⤵
      • Drops file in Windows directory
      PID:2096

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

            Filesize

            68KB

            MD5

            29f65ba8e88c063813cc50a4ea544e93

            SHA1

            05a7040d5c127e68c25d81cc51271ffb8bef3568

            SHA256

            1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

            SHA512

            e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

          • C:\Users\Admin\AppData\Local\Temp\Cab65D7.tmp

            Filesize

            65KB

            MD5

            ac05d27423a85adc1622c714f2cb6184

            SHA1

            b0fe2b1abddb97837ea0195be70ab2ff14d43198

            SHA256

            c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

            SHA512

            6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

          • C:\Users\Admin\AppData\Local\Temp\Tar6735.tmp

            Filesize

            177KB

            MD5

            435a9ac180383f9fa094131b173a2f7b

            SHA1

            76944ea657a9db94f9a4bef38f88c46ed4166983

            SHA256

            67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34

            SHA512

            1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a

          • C:\Users\Admin\AppData\Local\Temp\ntkrnlmp.exe

            Filesize

            5.3MB

            MD5

            1afff8d5352aecef2ecd47ffa02d7f7d

            SHA1

            8b115b84efdb3a1b87f750d35822b2609e665bef

            SHA256

            c41acc53cde89b94d55d6932ddd55a212ba910e1fade3da138670bb5b18ae4e1

            SHA512

            e5dc54c60be702e11772dc729eec5ec7140f293545aa3d57282adacddf686483393b0c940bbd397a9d50a6cda093865b143ae00c51ce3bf5d6b00241f97b3cdb

          • C:\Windows\rss\csrss.exe

            Filesize

            4.2MB

            MD5

            a3bb61cff2149475014e8c285e48f2fb

            SHA1

            7baafc7f3b94c14d4a05a69cb9f2b151af2d541d

            SHA256

            24e22690959c975561523ec9dd8255cc9367b3755d109bd4550a88e8a88ebf8c

            SHA512

            ecf825f0338f9fa871c328dc10493d808ab9315fb75c736e4a54bf1e7302365312f10128635a2940b1402827e219b6a87ec07abe5fc2c6f16593a214a893785b

          • \Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe

            Filesize

            281KB

            MD5

            d98e33b66343e7c96158444127a117f6

            SHA1

            bb716c5509a2bf345c6c1152f6e3e1452d39d50d

            SHA256

            5de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1

            SHA512

            705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5

          • \Users\Admin\AppData\Local\Temp\csrss\patch.exe

            Filesize

            1.7MB

            MD5

            13aaafe14eb60d6a718230e82c671d57

            SHA1

            e039dd924d12f264521b8e689426fb7ca95a0a7b

            SHA256

            f44a7deb678ae7bbaaadf88e4c620d7cdf7e6831a1656c456545b1c06feb4ef3

            SHA512

            ade02218c0fd1ef9290c3113cf993dd89e87d4fb66fa1b34afdc73c84876123cd742d2a36d8daa95e2a573d2aa7e880f3c8ba0c5c91916ed15e7c4f6ff847de3

          • \Users\Admin\AppData\Local\Temp\dbghelp.dll

            Filesize

            1.5MB

            MD5

            f0616fa8bc54ece07e3107057f74e4db

            SHA1

            b33995c4f9a004b7d806c4bb36040ee844781fca

            SHA256

            6e58fcf4d763022b1f79a3c448eb2ebd8ad1c15df3acf58416893f1cbc699026

            SHA512

            15242e3f5652d7f1d0e31cebadfe2f238ca3222f0e927eb7feb644ab2b3d33132cf2316ee5089324f20f72f1650ad5bb8dd82b96518386ce5b319fb5ceb8313c

          • \Users\Admin\AppData\Local\Temp\symsrv.dll

            Filesize

            163KB

            MD5

            5c399d34d8dc01741269ff1f1aca7554

            SHA1

            e0ceed500d3cef5558f3f55d33ba9c3a709e8f55

            SHA256

            e11e0f7804bfc485b19103a940be3d382f31c1378caca0c63076e27797d7553f

            SHA512

            8ff9d38b22d73c595cc417427b59f5ca8e1fb7b47a2fa6aef25322bf6e614d6b71339a752d779bd736b4c1057239100ac8cc62629fd5d6556785a69bcdc3d73d

          • memory/1620-54-0x00000000004D0000-0x0000000000AB8000-memory.dmp

            Filesize

            5.9MB

          • memory/1620-55-0x0000000000590000-0x0000000000B78000-memory.dmp

            Filesize

            5.9MB

          • memory/1620-119-0x00000000004D0000-0x0000000000AB8000-memory.dmp

            Filesize

            5.9MB

          • memory/2004-0-0x0000000003330000-0x0000000003728000-memory.dmp

            Filesize

            4.0MB

          • memory/2004-2-0x0000000004E50000-0x000000000573B000-memory.dmp

            Filesize

            8.9MB

          • memory/2004-4-0x0000000000400000-0x000000000300A000-memory.dmp

            Filesize

            44.0MB

          • memory/2004-3-0x0000000000400000-0x000000000300A000-memory.dmp

            Filesize

            44.0MB

          • memory/2004-1-0x0000000003330000-0x0000000003728000-memory.dmp

            Filesize

            4.0MB

          • memory/2004-7-0x0000000003330000-0x0000000003728000-memory.dmp

            Filesize

            4.0MB

          • memory/2004-6-0x0000000004E50000-0x000000000573B000-memory.dmp

            Filesize

            8.9MB

          • memory/2628-20-0x0000000000400000-0x000000000300A000-memory.dmp

            Filesize

            44.0MB

          • memory/2628-31-0x0000000003270000-0x0000000003668000-memory.dmp

            Filesize

            4.0MB

          • memory/2628-29-0x0000000000400000-0x000000000300A000-memory.dmp

            Filesize

            44.0MB

          • memory/2628-19-0x0000000003270000-0x0000000003668000-memory.dmp

            Filesize

            4.0MB

          • memory/2628-5-0x0000000003270000-0x0000000003668000-memory.dmp

            Filesize

            4.0MB

          • memory/2832-32-0x00000000031A0000-0x0000000003598000-memory.dmp

            Filesize

            4.0MB

          • memory/2832-115-0x0000000000400000-0x000000000300A000-memory.dmp

            Filesize

            44.0MB

          • memory/2832-35-0x0000000000400000-0x000000000300A000-memory.dmp

            Filesize

            44.0MB

          • memory/2832-33-0x0000000004D20000-0x000000000560B000-memory.dmp

            Filesize

            8.9MB

          • memory/2832-116-0x00000000031A0000-0x0000000003598000-memory.dmp

            Filesize

            4.0MB

          • memory/2832-117-0x0000000000400000-0x000000000300A000-memory.dmp

            Filesize

            44.0MB

          • memory/2832-118-0x0000000000400000-0x000000000300A000-memory.dmp

            Filesize

            44.0MB

          • memory/2832-30-0x00000000031A0000-0x0000000003598000-memory.dmp

            Filesize

            4.0MB

          • memory/2832-120-0x0000000000400000-0x000000000300A000-memory.dmp

            Filesize

            44.0MB

          • memory/2832-121-0x0000000000400000-0x000000000300A000-memory.dmp

            Filesize

            44.0MB

          • memory/2832-122-0x0000000000400000-0x000000000300A000-memory.dmp

            Filesize

            44.0MB

          • memory/2832-123-0x0000000000400000-0x000000000300A000-memory.dmp

            Filesize

            44.0MB

          • memory/2832-124-0x0000000000400000-0x000000000300A000-memory.dmp

            Filesize

            44.0MB

          • memory/2832-125-0x0000000000400000-0x000000000300A000-memory.dmp

            Filesize

            44.0MB

          • memory/2832-126-0x0000000000400000-0x000000000300A000-memory.dmp

            Filesize

            44.0MB

          • memory/2832-127-0x0000000000400000-0x000000000300A000-memory.dmp

            Filesize

            44.0MB

          • memory/2832-128-0x0000000000400000-0x000000000300A000-memory.dmp

            Filesize

            44.0MB

          • memory/2832-129-0x0000000000400000-0x000000000300A000-memory.dmp

            Filesize

            44.0MB

          • memory/2832-130-0x0000000000400000-0x000000000300A000-memory.dmp

            Filesize

            44.0MB