Analysis

  • max time kernel
    18s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    07-06-2024 02:57

General

  • Target

    e31eca26eebc6c55841ba9012aef2e64af914e13d85be5eed4cfee7d18b7cc44.exe

  • Size

    4.1MB

  • MD5

    e29c083b993670853ad8cc452b1cb4d1

  • SHA1

    fce7f4d659a7cf6ca079fa26d30cbb185f9e676a

  • SHA256

    e31eca26eebc6c55841ba9012aef2e64af914e13d85be5eed4cfee7d18b7cc44

  • SHA512

    3937c2cd8e11722eac10b57b287b5340caa2604ef4f5be338f39e1d7fb8f9fcd82078503650aa4b70a2dfe9d3e1b3b7bb35c287c4e7f1683a574731d278e0fc8

  • SSDEEP

    98304:JGrnwiB2dYFBQLVw0Jv37FWi1chPr/xRmmjECQgDNU:JG7LuY/yhvJWf/qmwCQmU

Malware Config

Signatures

  • Glupteba

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

  • Glupteba payload 18 IoCs
  • Windows security bypass 2 TTPs 7 IoCs
  • Detects Windows executables referencing non-Windows User-Agents 16 IoCs
  • Detects executables Discord URL observed in first stage droppers 16 IoCs
  • Detects executables containing URLs to raw contents of a Github gist 16 IoCs
  • Detects executables containing artifacts associated with disabling Widnows Defender 16 IoCs
  • Detects executables referencing many varying, potentially fake Windows User-Agents 16 IoCs
  • Modifies boot configuration data using bcdedit 14 IoCs
  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Possible attempt to disable PatchGuard 2 TTPs

    Rootkits can use kernel patching to embed themselves in an operating system.

  • 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.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 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
  • Modifies system certificate store 2 TTPs 7 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 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\e31eca26eebc6c55841ba9012aef2e64af914e13d85be5eed4cfee7d18b7cc44.exe
    "C:\Users\Admin\AppData\Local\Temp\e31eca26eebc6c55841ba9012aef2e64af914e13d85be5eed4cfee7d18b7cc44.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:1740
    • C:\Users\Admin\AppData\Local\Temp\e31eca26eebc6c55841ba9012aef2e64af914e13d85be5eed4cfee7d18b7cc44.exe
      "C:\Users\Admin\AppData\Local\Temp\e31eca26eebc6c55841ba9012aef2e64af914e13d85be5eed4cfee7d18b7cc44.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:2516
      • 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:2688
        • 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:2580
      • 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:1808
        • 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:1060
        • C:\Windows\system32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:1500
          • 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:1636
            • C:\Windows\system32\bcdedit.exe
              C:\Windows\system32\bcdedit.exe -create {71A3C7FC-F751-4982-AEC1-E958357E6813} -d "Windows Fast Mode" -application OSLOADER
              5⤵
              • Modifies boot configuration data using bcdedit
              PID:664
            • C:\Windows\system32\bcdedit.exe
              C:\Windows\system32\bcdedit.exe -set {71A3C7FC-F751-4982-AEC1-E958357E6813} device partition=C:
              5⤵
              • Modifies boot configuration data using bcdedit
              PID:2924
            • C:\Windows\system32\bcdedit.exe
              C:\Windows\system32\bcdedit.exe -set {71A3C7FC-F751-4982-AEC1-E958357E6813} osdevice partition=C:
              5⤵
              • Modifies boot configuration data using bcdedit
              PID:1812
            • C:\Windows\system32\bcdedit.exe
              C:\Windows\system32\bcdedit.exe -set {71A3C7FC-F751-4982-AEC1-E958357E6813} systemroot \Windows
              5⤵
              • Modifies boot configuration data using bcdedit
              PID:2832
            • C:\Windows\system32\bcdedit.exe
              C:\Windows\system32\bcdedit.exe -set {71A3C7FC-F751-4982-AEC1-E958357E6813} path \Windows\system32\osloader.exe
              5⤵
              • Modifies boot configuration data using bcdedit
              PID:2820
            • C:\Windows\system32\bcdedit.exe
              C:\Windows\system32\bcdedit.exe -set {71A3C7FC-F751-4982-AEC1-E958357E6813} kernel ntkrnlmp.exe
              5⤵
              • Modifies boot configuration data using bcdedit
              PID:3032
            • C:\Windows\system32\bcdedit.exe
              C:\Windows\system32\bcdedit.exe -set {71A3C7FC-F751-4982-AEC1-E958357E6813} recoveryenabled 0
              5⤵
              • Modifies boot configuration data using bcdedit
              PID:1660
            • C:\Windows\system32\bcdedit.exe
              C:\Windows\system32\bcdedit.exe -set {71A3C7FC-F751-4982-AEC1-E958357E6813} nx OptIn
              5⤵
              • Modifies boot configuration data using bcdedit
              PID:2888
            • C:\Windows\system32\bcdedit.exe
              C:\Windows\system32\bcdedit.exe -set {71A3C7FC-F751-4982-AEC1-E958357E6813} nointegritychecks 1
              5⤵
              • Modifies boot configuration data using bcdedit
              PID:712
            • C:\Windows\system32\bcdedit.exe
              C:\Windows\system32\bcdedit.exe -set {71A3C7FC-F751-4982-AEC1-E958357E6813} inherit {bootloadersettings}
              5⤵
              • Modifies boot configuration data using bcdedit
              PID:884
            • C:\Windows\system32\bcdedit.exe
              C:\Windows\system32\bcdedit.exe -displayorder {71A3C7FC-F751-4982-AEC1-E958357E6813} -addlast
              5⤵
              • Modifies boot configuration data using bcdedit
              PID:2804
            • C:\Windows\system32\bcdedit.exe
              C:\Windows\system32\bcdedit.exe -timeout 0
              5⤵
              • Modifies boot configuration data using bcdedit
              PID:2968
            • C:\Windows\system32\bcdedit.exe
              C:\Windows\system32\bcdedit.exe -default {71A3C7FC-F751-4982-AEC1-E958357E6813}
              5⤵
              • Modifies boot configuration data using bcdedit
              PID:2448
          • 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:1652
          • C:\Windows\system32\bcdedit.exe
            C:\Windows\Sysnative\bcdedit.exe /v
            4⤵
            • Modifies boot configuration data using bcdedit
            PID:2548
          • C:\Users\Admin\AppData\Local\Temp\csrss\dsefix.exe
            C:\Users\Admin\AppData\Local\Temp\csrss\dsefix.exe
            4⤵
              PID:1756
            • 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:2580
      • C:\Windows\system32\makecab.exe
        "C:\Windows\system32\makecab.exe" C:\Windows\Logs\CBS\CbsPersist_20240607025758.log C:\Windows\Logs\CBS\CbsPersist_20240607025758.cab
        1⤵
          PID:2512
        • C:\Windows\system32\conhost.exe
          \??\C:\Windows\system32\conhost.exe "-1610109677-10659215328989297531535192526904293362-1551308662-2009630274-1237170511"
          1⤵
            PID:2688

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

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

            Filesize

            70KB

            MD5

            49aebf8cbd62d92ac215b2923fb1b9f5

            SHA1

            1723be06719828dda65ad804298d0431f6aff976

            SHA256

            b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

            SHA512

            bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

          • C:\Users\Admin\AppData\Local\Temp\CabD1B3.tmp

            Filesize

            65KB

            MD5

            ac05d27423a85adc1622c714f2cb6184

            SHA1

            b0fe2b1abddb97837ea0195be70ab2ff14d43198

            SHA256

            c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

            SHA512

            6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

          • C:\Users\Admin\AppData\Local\Temp\Symbols\ntkrnlmp.pdb\AAF33CF37E194E98957768CF9C02DE8E2\download.error

            Filesize

            8.3MB

            MD5

            fd2727132edd0b59fa33733daa11d9ef

            SHA1

            63e36198d90c4c2b9b09dd6786b82aba5f03d29a

            SHA256

            3a72dbedc490773f90e241c8b3b839383a63ce36426a4f330a0f754b14b4d23e

            SHA512

            3e251be7d0e8db92d50092a4c4be3c74f42f3d564c72981f43a8e0fe06427513bfa0f67821a61a503a4f85741f0b150280389f8f4b4f01cdfd98edce5af29e6e

          • C:\Users\Admin\AppData\Local\Temp\Symbols\winload_prod.pdb\768283CA443847FB8822F9DB1F36ECC51\download.error

            Filesize

            492KB

            MD5

            fafbf2197151d5ce947872a4b0bcbe16

            SHA1

            a86eaa2dd9fc6d36fcfb41df7ead8d1166aea020

            SHA256

            feb122b7916a1e62a7a6ae8d25ea48a2efc86f6e6384f5526e18ffbfc5f5ff71

            SHA512

            acbd49a111704d001a4ae44d1a071d566452f92311c5c0099d57548eddc9b3393224792c602022df5c3dd19b0a1fb4eff965bf038c8783ae109336699f9d13f6

          • C:\Users\Admin\AppData\Local\Temp\TarD38E.tmp

            Filesize

            181KB

            MD5

            4ea6026cf93ec6338144661bf1202cd1

            SHA1

            a1dec9044f750ad887935a01430bf49322fbdcb7

            SHA256

            8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

            SHA512

            6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

          • C:\Users\Admin\AppData\Local\Temp\csrss\dsefix.exe

            Filesize

            94KB

            MD5

            d98e78fd57db58a11f880b45bb659767

            SHA1

            ab70c0d3bd9103c07632eeecee9f51d198ed0e76

            SHA256

            414035cc96d8bcc87ed173852a839ffbb45882a98c7a6f7b821e1668891deef0

            SHA512

            aafbd3eee102d0b682c4c854d69d50bac077e48f7f0dd8a5f913c6c73027aed7231d99fc9d716511759800da8c4f0f394b318821e9e47f6e62e436c8725a7831

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

            Filesize

            1.7MB

            MD5

            13aaafe14eb60d6a718230e82c671d57

            SHA1

            e039dd924d12f264521b8e689426fb7ca95a0a7b

            SHA256

            f44a7deb678ae7bbaaadf88e4c620d7cdf7e6831a1656c456545b1c06feb4ef3

            SHA512

            ade02218c0fd1ef9290c3113cf993dd89e87d4fb66fa1b34afdc73c84876123cd742d2a36d8daa95e2a573d2aa7e880f3c8ba0c5c91916ed15e7c4f6ff847de3

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

            Filesize

            281KB

            MD5

            d98e33b66343e7c96158444127a117f6

            SHA1

            bb716c5509a2bf345c6c1152f6e3e1452d39d50d

            SHA256

            5de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1

            SHA512

            705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5

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

            Filesize

            1.5MB

            MD5

            f0616fa8bc54ece07e3107057f74e4db

            SHA1

            b33995c4f9a004b7d806c4bb36040ee844781fca

            SHA256

            6e58fcf4d763022b1f79a3c448eb2ebd8ad1c15df3acf58416893f1cbc699026

            SHA512

            15242e3f5652d7f1d0e31cebadfe2f238ca3222f0e927eb7feb644ab2b3d33132cf2316ee5089324f20f72f1650ad5bb8dd82b96518386ce5b319fb5ceb8313c

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

            Filesize

            5.3MB

            MD5

            1afff8d5352aecef2ecd47ffa02d7f7d

            SHA1

            8b115b84efdb3a1b87f750d35822b2609e665bef

            SHA256

            c41acc53cde89b94d55d6932ddd55a212ba910e1fade3da138670bb5b18ae4e1

            SHA512

            e5dc54c60be702e11772dc729eec5ec7140f293545aa3d57282adacddf686483393b0c940bbd397a9d50a6cda093865b143ae00c51ce3bf5d6b00241f97b3cdb

          • \Users\Admin\AppData\Local\Temp\osloader.exe

            Filesize

            591KB

            MD5

            e2f68dc7fbd6e0bf031ca3809a739346

            SHA1

            9c35494898e65c8a62887f28e04c0359ab6f63f5

            SHA256

            b74cd24cef07f0226e7b777f7862943faee4cf288178b423d5344b0769dc15d4

            SHA512

            26256a12b5b8b3a40b34f18e081cdb45ea11845589c9d458a79385a4b8178f32164b417ddc9346fab8299bc6d4b9fedb620274c4edf9321424f37a2e2a6de579

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

            Filesize

            163KB

            MD5

            5c399d34d8dc01741269ff1f1aca7554

            SHA1

            e0ceed500d3cef5558f3f55d33ba9c3a709e8f55

            SHA256

            e11e0f7804bfc485b19103a940be3d382f31c1378caca0c63076e27797d7553f

            SHA512

            8ff9d38b22d73c595cc417427b59f5ca8e1fb7b47a2fa6aef25322bf6e614d6b71339a752d779bd736b4c1057239100ac8cc62629fd5d6556785a69bcdc3d73d

          • \Windows\rss\csrss.exe

            Filesize

            4.1MB

            MD5

            e29c083b993670853ad8cc452b1cb4d1

            SHA1

            fce7f4d659a7cf6ca079fa26d30cbb185f9e676a

            SHA256

            e31eca26eebc6c55841ba9012aef2e64af914e13d85be5eed4cfee7d18b7cc44

            SHA512

            3937c2cd8e11722eac10b57b287b5340caa2604ef4f5be338f39e1d7fb8f9fcd82078503650aa4b70a2dfe9d3e1b3b7bb35c287c4e7f1683a574731d278e0fc8

          • memory/1636-31-0x0000000140000000-0x00000001405E8000-memory.dmp

            Filesize

            5.9MB

          • memory/1636-44-0x0000000140000000-0x00000001405E8000-memory.dmp

            Filesize

            5.9MB

          • memory/1740-3-0x0000000000400000-0x0000000000D1C000-memory.dmp

            Filesize

            9.1MB

          • memory/1740-0-0x0000000003180000-0x0000000003578000-memory.dmp

            Filesize

            4.0MB

          • memory/1740-4-0x0000000000400000-0x0000000002EDD000-memory.dmp

            Filesize

            42.9MB

          • memory/1740-2-0x0000000004B10000-0x00000000053FB000-memory.dmp

            Filesize

            8.9MB

          • memory/1740-6-0x0000000004B10000-0x00000000053FB000-memory.dmp

            Filesize

            8.9MB

          • memory/1740-7-0x0000000003180000-0x0000000003578000-memory.dmp

            Filesize

            4.0MB

          • memory/1740-8-0x0000000000400000-0x0000000000D1C000-memory.dmp

            Filesize

            9.1MB

          • memory/1740-1-0x0000000003180000-0x0000000003578000-memory.dmp

            Filesize

            4.0MB

          • memory/1808-152-0x0000000000400000-0x0000000002EDD000-memory.dmp

            Filesize

            42.9MB

          • memory/1808-146-0x0000000000400000-0x0000000002EDD000-memory.dmp

            Filesize

            42.9MB

          • memory/1808-154-0x0000000000400000-0x0000000002EDD000-memory.dmp

            Filesize

            42.9MB

          • memory/1808-103-0x0000000000400000-0x0000000002EDD000-memory.dmp

            Filesize

            42.9MB

          • memory/1808-145-0x0000000000400000-0x0000000002EDD000-memory.dmp

            Filesize

            42.9MB

          • memory/1808-144-0x0000000000400000-0x0000000002EDD000-memory.dmp

            Filesize

            42.9MB

          • memory/1808-99-0x0000000000400000-0x0000000002EDD000-memory.dmp

            Filesize

            42.9MB

          • memory/1808-153-0x0000000000400000-0x0000000002EDD000-memory.dmp

            Filesize

            42.9MB

          • memory/1808-147-0x0000000000400000-0x0000000002EDD000-memory.dmp

            Filesize

            42.9MB

          • memory/1808-148-0x0000000000400000-0x0000000002EDD000-memory.dmp

            Filesize

            42.9MB

          • memory/1808-149-0x0000000000400000-0x0000000002EDD000-memory.dmp

            Filesize

            42.9MB

          • memory/1808-150-0x0000000000400000-0x0000000002EDD000-memory.dmp

            Filesize

            42.9MB

          • memory/1808-151-0x0000000000400000-0x0000000002EDD000-memory.dmp

            Filesize

            42.9MB

          • memory/1808-18-0x0000000003110000-0x0000000003508000-memory.dmp

            Filesize

            4.0MB

          • memory/2516-5-0x0000000003190000-0x0000000003588000-memory.dmp

            Filesize

            4.0MB

          • memory/2516-17-0x0000000000400000-0x0000000002EDD000-memory.dmp

            Filesize

            42.9MB