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Overview

overview

10

Static

static

3

1f4d55b98a...53.exe

windows7-x64

10

1f4d55b98a...53.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    151s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/12/2023, 01:08

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General

  • Target

    1f4d55b98a31413eb6ec577ac192dc53.exe

  • Size

    4.5MB

  • MD5

    1f4d55b98a31413eb6ec577ac192dc53

  • SHA1

    1a798dc46efbfa02acc451999111717619023a5c

  • SHA256

    b8409cd4c76480d62bb3abe797d9509dbdc2f6170dd065661ee86cc8fa19c95f

  • SHA512

    eec08fed3b7aa0de3e7da0a71715da918fc57faa83f600a699d7846d53d68b4521d111f33fb1d665116a0dfe543b9ff3e4517e2c5a9cbb16521823d967e21208

  • SSDEEP

    98304:nbHEpjqA1gg36zN2tMXsAdAV9Rl5FVo1cS4V9sNxOegkMn:nolqGE2tAS9NFVrV3UxOeMn

Score
10/10
gluptebametasploitbackdoordiscoverydropperevasionloaderpersistencerootkittrojan

Malware Config

Extracted

Family

metasploit

Version

windows/single_exec

Signatures

  • Glupteba

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

    loaderdropperglupteba
  • Glupteba payload 22 IoCs
  • MetaSploit

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

    trojanbackdoormetasploit
  • Modifies Windows Firewall 1 TTPs 1 IoCs
    evasion
  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

    discovery
  • Manipulates WinMonFS driver. 1 IoCs

    Roottkits write to WinMonFS to hide directories/files from being detected.

    rootkitevasion
  • Drops file in System32 directory 8 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
  • Program crash 1 IoCs
  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistence
  • GoLang User-Agent 1 IoCs

    Uses default user-agent string defined by GoLang HTTP packages.

  • Modifies data under HKEY_USERS 64 IoCs
  • Modifies system certificate store 2 TTPs 3 IoCs
    evasionspywaretrojan
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 9 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.

    persistence

Processes

  • C:\Users\Admin\AppData\Local\Temp\1f4d55b98a31413eb6ec577ac192dc53.exe
    "C:\Users\Admin\AppData\Local\Temp\1f4d55b98a31413eb6ec577ac192dc53.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:2208
    • C:\Users\Admin\AppData\Local\Temp\1f4d55b98a31413eb6ec577ac192dc53.exe
      "C:\Users\Admin\AppData\Local\Temp\1f4d55b98a31413eb6ec577ac192dc53.exe"
      2⤵
      • Adds Run key to start application
      • Drops file in System32 directory
      • Checks for VirtualBox DLLs, possible anti-VM trick
      • 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:4600
      • 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
          PID:5040
      • C:\Windows\rss\csrss.exe
        C:\Windows\rss\csrss.exe ""
        3⤵
        • Executes dropped EXE
        • Manipulates WinMonFS driver.
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4208
        • 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:4976
        • 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:1056
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2208 -s 932
      2⤵
      • Program crash
      PID:5080
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2208 -ip 2208
    1⤵
      PID:1708

    Network

    MITRE ATT&CK Enterprise v15

    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

      Download Submit

    • C:\Windows\rss\csrss.exe
      Filesize

      360KB

      MD5

      6d6512cd5a42d70150ac079edc6e1edb

      SHA1

      94a8500059cb8ceef0721a0fe9aa88e81c8d4791

      SHA256

      ca22df202229f75db80a0c863705ac3d191945eef0a852e167d2c2676de52e0d

      SHA512

      a56c02b08f7ed4f6dce2977bada67c518921063845c32c59265c98fc5fbd3e4ea56e04d9ab0cbc4baff56f717fdf427823e8da2c8c2b88182a88646c90ad64d2

      Download Submit

    • C:\Windows\rss\csrss.exe
      Filesize

      1011KB

      MD5

      9e6fc5b12a6dc3bae0a6890fd728dcf1

      SHA1

      988628a635746552c348d545866b6d22fb4751d8

      SHA256

      b9e05e72dfa861fffb47f6fa988a7715b92de8bbbbe0579f481e5961c6f9ead4

      SHA512

      efc1a7243e317bf209a835c8d72abd64b61234b4770b3cda21afcfe9b5bfa0d2df382424cea29fc63fbb36a660ff2a807f46c38dfc993768dcc06c6f00b64202

      Download Submit

    • memory/2208-2-0x0000000002EE0000-0x0000000003806000-memory.dmp

      Filesize

      9.1MB

      Download

    • memory/2208-3-0x0000000000400000-0x0000000000D41000-memory.dmp

      Filesize

      9.3MB

      Download

    • memory/2208-5-0x0000000000400000-0x0000000000D41000-memory.dmp

      Filesize

      9.3MB

      Download

    • memory/2208-6-0x0000000002EE0000-0x0000000003806000-memory.dmp

      Filesize

      9.1MB

      Download

    • memory/2208-1-0x0000000002A90000-0x0000000002EDA000-memory.dmp

      Filesize

      4.3MB

      Download

    • memory/4208-35-0x0000000000400000-0x0000000000D41000-memory.dmp

      Filesize

      9.3MB

      Download

    • memory/4208-33-0x0000000000400000-0x0000000000D41000-memory.dmp

      Filesize

      9.3MB

      Download

    • memory/4208-42-0x0000000000400000-0x0000000000D41000-memory.dmp

      Filesize

      9.3MB

      Download

    • memory/4208-21-0x0000000002E00000-0x0000000003300000-memory.dmp

      Filesize

      5.0MB

      Download

    • memory/4208-22-0x0000000000400000-0x0000000000D41000-memory.dmp

      Filesize

      9.3MB

      Download

    • memory/4208-23-0x0000000000400000-0x0000000000D41000-memory.dmp

      Filesize

      9.3MB

      Download

    • memory/4208-24-0x0000000000400000-0x0000000000D41000-memory.dmp

      Filesize

      9.3MB

      Download

    • memory/4208-27-0x0000000002E00000-0x0000000003300000-memory.dmp

      Filesize

      5.0MB

      Download

    • memory/4208-41-0x0000000000400000-0x0000000000D41000-memory.dmp

      Filesize

      9.3MB

      Download

    • memory/4208-31-0x0000000000400000-0x0000000000D41000-memory.dmp

      Filesize

      9.3MB

      Download

    • memory/4208-32-0x0000000000400000-0x0000000000D41000-memory.dmp

      Filesize

      9.3MB

      Download

    • memory/4208-40-0x0000000000400000-0x0000000000D41000-memory.dmp

      Filesize

      9.3MB

      Download

    • memory/4208-34-0x0000000000400000-0x0000000000D41000-memory.dmp

      Filesize

      9.3MB

      Download

    • memory/4208-39-0x0000000000400000-0x0000000000D41000-memory.dmp

      Filesize

      9.3MB

      Download

    • memory/4208-36-0x0000000000400000-0x0000000000D41000-memory.dmp

      Filesize

      9.3MB

      Download

    • memory/4208-37-0x0000000000400000-0x0000000000D41000-memory.dmp

      Filesize

      9.3MB

      Download

    • memory/4208-38-0x0000000000400000-0x0000000000D41000-memory.dmp

      Filesize

      9.3MB

      Download

    • memory/4600-7-0x0000000002A80000-0x0000000002ECC000-memory.dmp

      Filesize

      4.3MB

      Download

    • memory/4600-17-0x0000000000400000-0x0000000000D41000-memory.dmp

      Filesize

      9.3MB

      Download

    • memory/4600-8-0x0000000002ED0000-0x00000000037F6000-memory.dmp

      Filesize

      9.1MB

      Download

    • memory/4600-9-0x0000000000400000-0x0000000000D41000-memory.dmp

      Filesize

      9.3MB

      Download