Overview

overview

10

Static

static

1

be3b350d90...ca.exe

windows7-x64

10

be3b350d90...ca.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    133s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    17/04/2024, 03:43

Sharing

Copy URL Twitter E-mail
Report Analysis Logs

General

  • Target
    be3b350d90ff4b5de8f1e84b02b548a21c343df68f2d8092e90cf1edbeb945ca.exe
  • Size 4.2MB
  • Sample240417-eacsmacg74
  • SHA256 be3b350d90ff4b5de8f1e84b02b548a21c343df68f2d8092e90cf1edbeb945ca
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
gluptebadiscoverydropperevasionloaderpersistencerootkittrojanupx

Malware Config

Signatures

  • Glupteba

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

    loaderdropperglupteba
  • Glupteba payload 21 IoCs
  • Windows security bypass 2 TTPs 7 IoCs
    evasiontrojan
  • Detects Windows executables referencing non-Windows User-Agents 19 IoCs
  • Detects executables Discord URL observed in first stage droppers 19 IoCs
  • Detects executables containing URLs to raw contents of a Github gist 19 IoCs
  • Detects executables containing artifacts associated with disabling Widnows Defender 19 IoCs
  • Detects executables referencing many varying, potentially fake Windows User-Agents 19 IoCs
  • Modifies boot configuration data using bcdedit 14 IoCs
  • UPX dump on OEP (original entry point) 6 IoCs
  • Drops file in Drivers directory 1 IoCs
  • Modifies Windows Firewall 2 TTPs 1 IoCs
    evasion
  • Possible attempt to disable PatchGuard 2 TTPs

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

    evasion
  • Executes dropped EXE 6 IoCs
  • Loads dropped DLL 13 IoCs
  • UPX packed file 6 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

    upx
  • Windows security modification 2 TTPs 7 IoCs
    evasiontrojan
  • Adds Run key to start application 2 TTPs 2 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 WinMon driver. 1 IoCs

    Roottkits write to WinMon to hide PIDs from being detected.

    rootkitevasion
  • Manipulates WinMonFS driver. 1 IoCs

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

    rootkitevasion
  • 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 5 IoCs
  • Launches sc.exe 1 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Creates scheduled task(s) 1 TTPs 2 IoCs

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

    persistence
  • Modifies data under HKEY_USERS 64 IoCs
  • Modifies system certificate store 2 TTPs 11 IoCs
    evasionspywaretrojan
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 64 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\be3b350d90ff4b5de8f1e84b02b548a21c343df68f2d8092e90cf1edbeb945ca.exe
    "C:\Users\Admin\AppData\Local\Temp\be3b350d90ff4b5de8f1e84b02b548a21c343df68f2d8092e90cf1edbeb945ca.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:2548
    • C:\Users\Admin\AppData\Local\Temp\be3b350d90ff4b5de8f1e84b02b548a21c343df68f2d8092e90cf1edbeb945ca.exe
      "C:\Users\Admin\AppData\Local\Temp\be3b350d90ff4b5de8f1e84b02b548a21c343df68f2d8092e90cf1edbeb945ca.exe"
      2⤵
      • Windows security bypass
      • Loads dropped DLL
      • Windows security modification
      • Adds Run key to start application
      • Checks for VirtualBox DLLs, possible anti-VM trick
      • Drops file in Windows directory
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3052
      • 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:2660
        • 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:2512
      • C:\Windows\rss\csrss.exe
        C:\Windows\rss\csrss.exe
        3⤵
        • Drops file in Drivers directory
        • Executes dropped EXE
        • Loads dropped DLL
        • Adds Run key to start application
        • Manipulates WinMon driver.
        • Manipulates WinMonFS driver.
        • Drops file in Windows directory
        • Modifies system certificate store
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2484
        • 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:1048
        • C:\Windows\system32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:2364
          • 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
            • Modifies system certificate store
            • Suspicious use of WriteProcessMemory
            PID:2944
            • 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:616
            • 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:1856
            • 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:884
            • 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:2876
            • 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:2228
            • 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:2392
            • 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:552
            • 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:1072
            • 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:2012
            • 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:608
            • 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:904
            • C:\Windows\system32\bcdedit.exe
              C:\Windows\system32\bcdedit.exe -timeout 0
              5⤵
              • Modifies boot configuration data using bcdedit
              PID:3012
            • C:\Windows\system32\bcdedit.exe
              C:\Windows\system32\bcdedit.exe -default {71A3C7FC-F751-4982-AEC1-E958357E6813}
              5⤵
              • Modifies boot configuration data using bcdedit
              PID:1672
          • 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:1660
          • C:\Windows\system32\bcdedit.exe
            C:\Windows\Sysnative\bcdedit.exe /v
            4⤵
            • Modifies boot configuration data using bcdedit
            PID:1580
          • C:\Users\Admin\AppData\Local\Temp\csrss\dsefix.exe
            C:\Users\Admin\AppData\Local\Temp\csrss\dsefix.exe
            4⤵
            • Executes dropped EXE
            PID:2076
          • 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:2628
          • C:\Windows\windefender.exe
            "C:\Windows\windefender.exe"
            4⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:2632
            • C:\Windows\SysWOW64\cmd.exe
              cmd.exe /C sc sdset WinDefender D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPLOCRSDRCWDWO;;;BA)(D;;WPDT;;;BA)(A;;CCLCSWLOCRRC;;;IU)(A;;CCLCSWLOCRRC;;;SU)S:(AU;FA;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;WD)
              5⤵
                PID:2736
                • C:\Windows\SysWOW64\sc.exe
                  sc sdset WinDefender D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPLOCRSDRCWDWO;;;BA)(D;;WPDT;;;BA)(A;;CCLCSWLOCRRC;;;IU)(A;;CCLCSWLOCRRC;;;SU)S:(AU;FA;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;WD)
                  6⤵
                  • Launches sc.exe
                  • Suspicious use of AdjustPrivilegeToken
                  PID:2728
      • C:\Windows\system32\makecab.exe
        "C:\Windows\system32\makecab.exe" C:\Windows\Logs\CBS\CbsPersist_20240417034356.log C:\Windows\Logs\CBS\CbsPersist_20240417034356.cab
        1⤵
        • Drops file in Windows directory
        PID:2716
      • C:\Windows\windefender.exe
        C:\Windows\windefender.exe
        1⤵
        • Executes dropped EXE
        • Modifies data under HKEY_USERS
        PID:2160

      Network

            MITRE ATT&CK Enterprise v15

            Reconnaissance

            Resource Development

            Initial Access

            Execution

            Command and Scripting Interpreter

            1
            T1059

            Scheduled Task/Job

            1
            T1053

            Persistence

            Boot or Logon Autostart Execution

            1
            T1547

            Registry Run Keys / Startup Folder

            1
            T1547.001

            Create or Modify System Process

            1
            T1543

            Windows Service

            1
            T1543.003

            Scheduled Task/Job

            1
            T1053

            Privilege Escalation

            Boot or Logon Autostart Execution

            1
            T1547

            Registry Run Keys / Startup Folder

            1
            T1547.001

            Create or Modify System Process

            1
            T1543

            Windows Service

            1
            T1543.003

            Scheduled Task/Job

            1
            T1053

            Defense Evasion

            Impair Defenses

            4
            T1562

            Disable or Modify System Firewall

            1
            T1562.004

            Disable or Modify Tools

            2
            T1562.001

            Modify Registry

            4
            T1112

            Subvert Trust Controls

            1
            T1553

            Install Root Certificate

            1
            T1553.004

            Credential Access

            Discovery

            Query Registry

            2
            T1012

            System Information Discovery

            1
            T1082

            Lateral Movement

            Collection

            Command and Control

            Exfiltration

            Impact

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            94308059B57B3142E455B38A6EB92015
            • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
            • Size 68KB
            • SHA256 1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184
            • MD5 SHA1 SHA512 SSDEEP
            Submit Download

            download.error
            • Path C:\Users\Admin\AppData\Local\Temp\Symbols\ntkrnlmp.pdb\AAF33CF37E194E98957768CF9C02DE8E2\download.error
            • Size 8.3MB
            • SHA256 3a72dbedc490773f90e241c8b3b839383a63ce36426a4f330a0f754b14b4d23e
            • MD5 SHA1 SHA512 SSDEEP
            Submit Download

            download.error
            • Path C:\Users\Admin\AppData\Local\Temp\Symbols\winload_prod.pdb\768283CA443847FB8822F9DB1F36ECC51\download.error
            • Size 492KB
            • SHA256 feb122b7916a1e62a7a6ae8d25ea48a2efc86f6e6384f5526e18ffbfc5f5ff71
            • MD5 SHA1 SHA512 SSDEEP
            Submit Download

            Tar26A8.tmp
            • Path C:\Users\Admin\AppData\Local\Temp\Tar26A8.tmp
            • Size 177KB
            • SHA256 67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34
            • MD5 SHA1 SHA512 SSDEEP
            Submit Download

            windefender.exe
            • Path C:\Windows\windefender.exe
            • Size 2.0MB
            • SHA256 166ddb03ff3c89bd4525ac390067e180fdd08f10fbcf4aadb0189541673c03fa
            • MD5 SHA1 SHA512 SSDEEP
            Submit Download

            dsefix.exe
            • Path \Users\Admin\AppData\Local\Temp\csrss\dsefix.exe
            • Size 94KB
            • SHA256 414035cc96d8bcc87ed173852a839ffbb45882a98c7a6f7b821e1668891deef0
            • MD5 SHA1 SHA512 SSDEEP
            Submit Download

            injector.exe
            • Path \Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe
            • Size 281KB
            • SHA256 5de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1
            • MD5 SHA1 SHA512 SSDEEP
            Submit Download

            patch.exe
            • Path \Users\Admin\AppData\Local\Temp\csrss\patch.exe
            • Size 1.7MB
            • SHA256 f44a7deb678ae7bbaaadf88e4c620d7cdf7e6831a1656c456545b1c06feb4ef3
            • MD5 SHA1 SHA512 SSDEEP
            Submit Download

            dbghelp.dll
            • Path \Users\Admin\AppData\Local\Temp\dbghelp.dll
            • Size 1.5MB
            • SHA256 6e58fcf4d763022b1f79a3c448eb2ebd8ad1c15df3acf58416893f1cbc699026
            • MD5 SHA1 SHA512 SSDEEP
            Submit Download

            ntkrnlmp.exe
            • Path \Users\Admin\AppData\Local\Temp\ntkrnlmp.exe
            • Size 5.3MB
            • SHA256 c41acc53cde89b94d55d6932ddd55a212ba910e1fade3da138670bb5b18ae4e1
            • MD5 SHA1 SHA512 SSDEEP
            Submit Download

            osloader.exe
            • Path \Users\Admin\AppData\Local\Temp\osloader.exe
            • Size 591KB
            • SHA256 b74cd24cef07f0226e7b777f7862943faee4cf288178b423d5344b0769dc15d4
            • MD5 SHA1 SHA512 SSDEEP
            Submit Download

            symsrv.dll
            • Path \Users\Admin\AppData\Local\Temp\symsrv.dll
            • Size 163KB
            • SHA256 e11e0f7804bfc485b19103a940be3d382f31c1378caca0c63076e27797d7553f
            • MD5 SHA1 SHA512 SSDEEP
            Submit Download

            csrss.exe
            • Path \Windows\rss\csrss.exe
            • Size 4.2MB
            • SHA256 be3b350d90ff4b5de8f1e84b02b548a21c343df68f2d8092e90cf1edbeb945ca
            • MD5 SHA1 SHA512 SSDEEP
            Submit Download

            memory/2160-145-0x0000000000400000-0x00000000008DF000-memory.dmp
            Download

            memory/2160-148-0x0000000000400000-0x00000000008DF000-memory.dmp
            Download

            memory/2160-151-0x0000000000400000-0x00000000008DF000-memory.dmp
            Download

            memory/2484-146-0x0000000000400000-0x000000000310F000-memory.dmp
            Download

            memory/2484-91-0x0000000000400000-0x000000000310F000-memory.dmp
            Download

            memory/2484-21-0x0000000004A80000-0x0000000004E78000-memory.dmp
            Download

            memory/2484-165-0x0000000000400000-0x000000000310F000-memory.dmp
            Download

            memory/2484-164-0x0000000000400000-0x000000000310F000-memory.dmp
            Download

            memory/2484-162-0x0000000000400000-0x000000000310F000-memory.dmp
            Download

            memory/2484-159-0x0000000000400000-0x000000000310F000-memory.dmp
            Download

            memory/2484-19-0x0000000004A80000-0x0000000004E78000-memory.dmp
            Download

            memory/2484-157-0x0000000000400000-0x000000000310F000-memory.dmp
            Download

            memory/2484-147-0x0000000000400000-0x000000000310F000-memory.dmp
            Download

            memory/2484-103-0x0000000004A80000-0x0000000004E78000-memory.dmp
            Download

            memory/2484-107-0x0000000000400000-0x000000000310F000-memory.dmp
            Download

            memory/2484-155-0x0000000000400000-0x000000000310F000-memory.dmp
            Download

            memory/2484-154-0x0000000000400000-0x000000000310F000-memory.dmp
            Download

            memory/2484-152-0x0000000000400000-0x000000000310F000-memory.dmp
            Download

            memory/2484-149-0x0000000000400000-0x000000000310F000-memory.dmp
            Download

            memory/2484-137-0x0000000000400000-0x000000000310F000-memory.dmp
            Download

            memory/2484-22-0x0000000000400000-0x000000000310F000-memory.dmp
            Download

            memory/2548-4-0x0000000000400000-0x000000000310F000-memory.dmp
            Download

            memory/2548-1-0x0000000004850000-0x0000000004C48000-memory.dmp
            Download

            memory/2548-3-0x0000000000400000-0x000000000310F000-memory.dmp
            Download

            memory/2548-0-0x0000000004850000-0x0000000004C48000-memory.dmp
            Download

            memory/2548-2-0x0000000004C50000-0x000000000553B000-memory.dmp
            Download

            memory/2548-6-0x0000000004850000-0x0000000004C48000-memory.dmp
            Download

            memory/2548-5-0x0000000004C50000-0x000000000553B000-memory.dmp
            Download

            memory/2632-144-0x0000000000400000-0x00000000008DF000-memory.dmp
            Download

            memory/2632-141-0x0000000000400000-0x00000000008DF000-memory.dmp
            Download

            memory/2944-43-0x0000000140000000-0x00000001405E8000-memory.dmp
            Download

            memory/2944-27-0x0000000140000000-0x00000001405E8000-memory.dmp
            Download

            memory/3052-7-0x0000000004900000-0x0000000004CF8000-memory.dmp
            Download

            memory/3052-8-0x0000000004900000-0x0000000004CF8000-memory.dmp
            Download

            memory/3052-9-0x0000000000400000-0x000000000310F000-memory.dmp
            Download

            memory/3052-18-0x0000000000400000-0x000000000310F000-memory.dmp
            Download

            memory/3052-20-0x0000000004900000-0x0000000004CF8000-memory.dmp
            Download