Overview

overview

10

Static

static

1

JC_774039a...c1.exe

windows7-x64

10

JC_774039a...c1.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    17-08-2024 21:58

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General

  • Target

    JC_774039a0e206687d722ddec0fdb49ba5eb23617733361b45251b9a5216bcf9c1.exe

  • Size

    4.2MB

  • MD5

    9baf237ad5f0ffb7a3d711f4fa053a74

  • SHA1

    2a73e1a6a1b9a246506f52dc832587f7c1fc671c

  • SHA256

    774039a0e206687d722ddec0fdb49ba5eb23617733361b45251b9a5216bcf9c1

  • SHA512

    cbf5910b1234e812aa3fec86d8dec0ae1293b1e0a47c8d437021ce46e1ac2b3027f8b761758a93055747a14ca2153cad6eb0df098517ec5c0b910ce8fbeb81c2

  • SSDEEP

    98304:gsRcNuB8Itle9glkMIku3afIOxmZPY9+ud1wcGNOYk:KItfqlrafCPW1mfk

Score
10/10
gluptebadiscoverydropperevasionloaderpersistenceprivilege_escalationrootkittrojan

Malware Config

Signatures

  • Glupteba

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

    loaderdropperglupteba
  • Glupteba payload 17 IoCs
  • Windows security bypass 2 TTPs 7 IoCs
    evasiontrojan
  • Modifies Windows Firewall 2 TTPs 1 IoCs
    evasion
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 12 IoCs
  • 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 WinMonFS driver. 1 IoCs

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

    rootkitevasion
  • Modifies boot configuration data using bcdedit 1 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 3 IoCs
  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

    persistenceprivilege_escalation
  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Modifies data under HKEY_USERS 64 IoCs
  • Modifies system certificate store 2 TTPs 7 IoCs
    evasionspywaretrojan
  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

    persistenceexecution
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 19 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\JC_774039a0e206687d722ddec0fdb49ba5eb23617733361b45251b9a5216bcf9c1.exe
    "C:\Users\Admin\AppData\Local\Temp\JC_774039a0e206687d722ddec0fdb49ba5eb23617733361b45251b9a5216bcf9c1.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:2028
    • C:\Users\Admin\AppData\Local\Temp\JC_774039a0e206687d722ddec0fdb49ba5eb23617733361b45251b9a5216bcf9c1.exe
      "C:\Users\Admin\AppData\Local\Temp\JC_774039a0e206687d722ddec0fdb49ba5eb23617733361b45251b9a5216bcf9c1.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
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2656
      • 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:2548
        • 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
          • Event Triggered Execution: Netsh Helper DLL
          • Modifies data under HKEY_USERS
          PID:2608
      • C:\Windows\rss\csrss.exe
        C:\Windows\rss\csrss.exe
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Adds Run key to start application
        • Manipulates WinMonFS driver.
        • System Location Discovery: System Language Discovery
        • Modifies system certificate store
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2964
        • C:\Windows\system32\schtasks.exe
          schtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F
          4⤵
          • Scheduled Task/Job: Scheduled Task
          PID:2832
        • C:\Windows\system32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:1480
          • 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
            PID:1576
          • 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:2900
          • C:\Windows\system32\bcdedit.exe
            C:\Windows\Sysnative\bcdedit.exe /v
            4⤵
            • Modifies boot configuration data using bcdedit
            PID:2268
          • C:\Windows\system32\schtasks.exe
            schtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F
            4⤵
            • Scheduled Task/Job: Scheduled Task
            PID:2664
    • C:\Windows\system32\makecab.exe
      "C:\Windows\system32\makecab.exe" C:\Windows\Logs\CBS\CbsPersist_20240817215823.log C:\Windows\Logs\CBS\CbsPersist_20240817215823.cab
      1⤵
      • Drops file in Windows directory
      PID:2748

    Network

    MITRE ATT&CK Enterprise v15

    Reconnaissance

    Resource Development

    Initial Access

    Execution

    Scheduled Task/Job

    1
    T1053

    Scheduled Task

    1
    T1053.005

    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

    Event Triggered Execution

    1
    T1546

    Netsh Helper DLL

    1
    T1546.007

    Scheduled Task/Job

    1
    T1053

    Scheduled Task

    1
    T1053.005

    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

    Event Triggered Execution

    1
    T1546

    Netsh Helper DLL

    1
    T1546.007

    Scheduled Task/Job

    1
    T1053

    Scheduled Task

    1
    T1053.005

    Defense Evasion

    Impair Defenses

    3
    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

    System Location Discovery

    1
    T1614

    System Language Discovery

    1
    T1614.001

    Lateral Movement

    Collection

    Command and Control

    Exfiltration

    Impact

    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

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

      1.7MB

      MD5

      13aaafe14eb60d6a718230e82c671d57

      SHA1

      e039dd924d12f264521b8e689426fb7ca95a0a7b

      SHA256

      f44a7deb678ae7bbaaadf88e4c620d7cdf7e6831a1656c456545b1c06feb4ef3

      SHA512

      ade02218c0fd1ef9290c3113cf993dd89e87d4fb66fa1b34afdc73c84876123cd742d2a36d8daa95e2a573d2aa7e880f3c8ba0c5c91916ed15e7c4f6ff847de3

      Download Submit

    • \Users\Admin\AppData\Local\Temp\dbghelp.dll
      Filesize

      1.5MB

      MD5

      f0616fa8bc54ece07e3107057f74e4db

      SHA1

      b33995c4f9a004b7d806c4bb36040ee844781fca

      SHA256

      6e58fcf4d763022b1f79a3c448eb2ebd8ad1c15df3acf58416893f1cbc699026

      SHA512

      15242e3f5652d7f1d0e31cebadfe2f238ca3222f0e927eb7feb644ab2b3d33132cf2316ee5089324f20f72f1650ad5bb8dd82b96518386ce5b319fb5ceb8313c

      Download Submit

    • \Users\Admin\AppData\Local\Temp\ntkrnlmp.exe
      Filesize

      5.3MB

      MD5

      1afff8d5352aecef2ecd47ffa02d7f7d

      SHA1

      8b115b84efdb3a1b87f750d35822b2609e665bef

      SHA256

      c41acc53cde89b94d55d6932ddd55a212ba910e1fade3da138670bb5b18ae4e1

      SHA512

      e5dc54c60be702e11772dc729eec5ec7140f293545aa3d57282adacddf686483393b0c940bbd397a9d50a6cda093865b143ae00c51ce3bf5d6b00241f97b3cdb

      Download Submit

    • \Users\Admin\AppData\Local\Temp\osloader.exe
      Filesize

      591KB

      MD5

      e2f68dc7fbd6e0bf031ca3809a739346

      SHA1

      9c35494898e65c8a62887f28e04c0359ab6f63f5

      SHA256

      b74cd24cef07f0226e7b777f7862943faee4cf288178b423d5344b0769dc15d4

      SHA512

      26256a12b5b8b3a40b34f18e081cdb45ea11845589c9d458a79385a4b8178f32164b417ddc9346fab8299bc6d4b9fedb620274c4edf9321424f37a2e2a6de579

      Download Submit

    • \Users\Admin\AppData\Local\Temp\symsrv.dll
      Filesize

      163KB

      MD5

      5c399d34d8dc01741269ff1f1aca7554

      SHA1

      e0ceed500d3cef5558f3f55d33ba9c3a709e8f55

      SHA256

      e11e0f7804bfc485b19103a940be3d382f31c1378caca0c63076e27797d7553f

      SHA512

      8ff9d38b22d73c595cc417427b59f5ca8e1fb7b47a2fa6aef25322bf6e614d6b71339a752d779bd736b4c1057239100ac8cc62629fd5d6556785a69bcdc3d73d

      Download Submit

    • \Windows\rss\csrss.exe
      Filesize

      4.2MB

      MD5

      9baf237ad5f0ffb7a3d711f4fa053a74

      SHA1

      2a73e1a6a1b9a246506f52dc832587f7c1fc671c

      SHA256

      774039a0e206687d722ddec0fdb49ba5eb23617733361b45251b9a5216bcf9c1

      SHA512

      cbf5910b1234e812aa3fec86d8dec0ae1293b1e0a47c8d437021ce46e1ac2b3027f8b761758a93055747a14ca2153cad6eb0df098517ec5c0b910ce8fbeb81c2

      Download Submit

    • memory/1576-53-0x0000000140000000-0x00000001405E8000-memory.dmp

      Filesize

      5.9MB

      Download

    • memory/1576-44-0x0000000140000000-0x00000001405E8000-memory.dmp

      Filesize

      5.9MB

      Download

    • memory/2028-0-0x00000000040F0000-0x00000000044E8000-memory.dmp

      Filesize

      4.0MB

      Download

    • memory/2028-6-0x00000000044F0000-0x0000000004DDB000-memory.dmp

      Filesize

      8.9MB

      Download

    • memory/2028-3-0x0000000000400000-0x0000000002817000-memory.dmp

      Filesize

      36.1MB

      Download

    • memory/2028-4-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

      Download

    • memory/2028-5-0x00000000040F0000-0x00000000044E8000-memory.dmp

      Filesize

      4.0MB

      Download

    • memory/2028-2-0x0000000000400000-0x0000000000D1B000-memory.dmp

      Filesize

      9.1MB

      Download

    • memory/2028-1-0x00000000044F0000-0x0000000004DDB000-memory.dmp

      Filesize

      8.9MB

      Download

    • memory/2656-7-0x0000000000400000-0x0000000002817000-memory.dmp

      Filesize

      36.1MB

      Download

    • memory/2656-16-0x0000000000400000-0x0000000002817000-memory.dmp

      Filesize

      36.1MB

      Download

    • memory/2964-54-0x0000000000400000-0x0000000002817000-memory.dmp

      Filesize

      36.1MB

      Download

    • memory/2964-70-0x0000000000400000-0x0000000002817000-memory.dmp

      Filesize

      36.1MB

      Download

    • memory/2964-71-0x0000000000400000-0x0000000002817000-memory.dmp

      Filesize

      36.1MB

      Download

    • memory/2964-72-0x0000000000400000-0x0000000002817000-memory.dmp

      Filesize

      36.1MB

      Download

    • memory/2964-73-0x0000000000400000-0x0000000002817000-memory.dmp

      Filesize

      36.1MB

      Download

    • memory/2964-77-0x0000000000400000-0x0000000002817000-memory.dmp

      Filesize

      36.1MB

      Download

    • memory/2964-78-0x0000000000400000-0x0000000002817000-memory.dmp

      Filesize

      36.1MB

      Download

    • memory/2964-79-0x0000000000400000-0x0000000002817000-memory.dmp

      Filesize

      36.1MB

      Download

    • memory/2964-89-0x0000000000400000-0x0000000002817000-memory.dmp

      Filesize

      36.1MB

      Download

    • memory/2964-90-0x0000000000400000-0x0000000002817000-memory.dmp

      Filesize

      36.1MB

      Download

    • memory/2964-91-0x0000000000400000-0x0000000002817000-memory.dmp

      Filesize

      36.1MB

      Download