Analysis

  • max time kernel
    220s
  • max time network
    226s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220414-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-07-2022 01:49

General

  • Target

    52d0c0243386eb7c8c507153ec9788bb53264b6ee30bc16962f3c3fcc4b0cff3.exe

  • Size

    4.3MB

  • MD5

    1b2ad09fbe6a284aa2114f598b77aefd

  • SHA1

    30016ba58872d05983b45d4f81d81a1b60af7ac7

  • SHA256

    52d0c0243386eb7c8c507153ec9788bb53264b6ee30bc16962f3c3fcc4b0cff3

  • SHA512

    bc747ae211af38b1d2921d6c2fc5aa49174abf25896be19a12f58ada48a607198548487073eb98683fe1b125080774527411e217f32d020bf59c8607f19383c0

Malware Config

Extracted

Family

metasploit

Version

windows/single_exec

Signatures

  • Glupteba

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

  • Glupteba payload 8 IoCs
  • MetaSploit

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

  • Suspicious use of NtCreateUserProcessOtherParentProcess 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Modifies Windows Firewall 1 TTPs 1 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 6 IoCs
  • Drops file in Windows directory 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
  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 10 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\52d0c0243386eb7c8c507153ec9788bb53264b6ee30bc16962f3c3fcc4b0cff3.exe
    "C:\Users\Admin\AppData\Local\Temp\52d0c0243386eb7c8c507153ec9788bb53264b6ee30bc16962f3c3fcc4b0cff3.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:4480
    • C:\Users\Admin\AppData\Local\Temp\52d0c0243386eb7c8c507153ec9788bb53264b6ee30bc16962f3c3fcc4b0cff3.exe
      "C:\Users\Admin\AppData\Local\Temp\52d0c0243386eb7c8c507153ec9788bb53264b6ee30bc16962f3c3fcc4b0cff3.exe"
      2⤵
      • Adds Run key to start application
      • Drops file in System32 directory
      • Drops file in Windows directory
      • Modifies data under HKEY_USERS
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:5068
      • 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:2368
        • 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:3104
      • C:\Windows\rss\csrss.exe
        C:\Windows\rss\csrss.exe ""
        3⤵
        • Executes dropped EXE
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3032
        • 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:4428
        • 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:3964
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k netsvcs -p -s seclogon
    1⤵
    • Suspicious use of NtCreateUserProcessOtherParentProcess
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4696

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    281KB

    MD5

    d98e33b66343e7c96158444127a117f6

    SHA1

    bb716c5509a2bf345c6c1152f6e3e1452d39d50d

    SHA256

    5de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1

    SHA512

    705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5

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

    Filesize

    281KB

    MD5

    d98e33b66343e7c96158444127a117f6

    SHA1

    bb716c5509a2bf345c6c1152f6e3e1452d39d50d

    SHA256

    5de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1

    SHA512

    705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5

  • C:\Windows\rss\csrss.exe

    Filesize

    4.3MB

    MD5

    1b2ad09fbe6a284aa2114f598b77aefd

    SHA1

    30016ba58872d05983b45d4f81d81a1b60af7ac7

    SHA256

    52d0c0243386eb7c8c507153ec9788bb53264b6ee30bc16962f3c3fcc4b0cff3

    SHA512

    bc747ae211af38b1d2921d6c2fc5aa49174abf25896be19a12f58ada48a607198548487073eb98683fe1b125080774527411e217f32d020bf59c8607f19383c0

  • C:\Windows\rss\csrss.exe

    Filesize

    4.3MB

    MD5

    1b2ad09fbe6a284aa2114f598b77aefd

    SHA1

    30016ba58872d05983b45d4f81d81a1b60af7ac7

    SHA256

    52d0c0243386eb7c8c507153ec9788bb53264b6ee30bc16962f3c3fcc4b0cff3

    SHA512

    bc747ae211af38b1d2921d6c2fc5aa49174abf25896be19a12f58ada48a607198548487073eb98683fe1b125080774527411e217f32d020bf59c8607f19383c0

  • memory/2368-138-0x0000000000000000-mapping.dmp

  • memory/3032-150-0x0000000000400000-0x0000000002FC4000-memory.dmp

    Filesize

    43.8MB

  • memory/3032-146-0x0000000000400000-0x0000000002FC4000-memory.dmp

    Filesize

    43.8MB

  • memory/3032-144-0x0000000005200000-0x0000000005630000-memory.dmp

    Filesize

    4.2MB

  • memory/3032-140-0x0000000000000000-mapping.dmp

  • memory/3104-139-0x0000000000000000-mapping.dmp

  • memory/3964-147-0x0000000000000000-mapping.dmp

  • memory/4428-145-0x0000000000000000-mapping.dmp

  • memory/4480-136-0x0000000000400000-0x0000000002FC4000-memory.dmp

    Filesize

    43.8MB

  • memory/4480-130-0x0000000004DEB000-0x000000000521B000-memory.dmp

    Filesize

    4.2MB

  • memory/4480-132-0x0000000000400000-0x0000000002FC4000-memory.dmp

    Filesize

    43.8MB

  • memory/4480-131-0x0000000005220000-0x0000000005B2A000-memory.dmp

    Filesize

    9.0MB

  • memory/5068-137-0x0000000000400000-0x0000000002FC4000-memory.dmp

    Filesize

    43.8MB

  • memory/5068-143-0x0000000000400000-0x0000000002FC4000-memory.dmp

    Filesize

    43.8MB

  • memory/5068-135-0x0000000000400000-0x0000000002FC4000-memory.dmp

    Filesize

    43.8MB

  • memory/5068-134-0x0000000004CA1000-0x00000000050D1000-memory.dmp

    Filesize

    4.2MB

  • memory/5068-133-0x0000000000000000-mapping.dmp