Analysis

  • max time kernel
    150s
  • max time network
    119s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15-04-2024 19:58

General

  • Target

    f1ce03e1952a6c775828bce474f89cdf_JaffaCakes118.exe

  • Size

    4.4MB

  • MD5

    f1ce03e1952a6c775828bce474f89cdf

  • SHA1

    65403b05bb419f9925487579a8e119310e9ae823

  • SHA256

    80a3efd9ef8b22a8df2fe30b1b1e36281219c247afc7ce063d03c2b657477ec3

  • SHA512

    cbeb85e21591896896f24f3592cf63ea9f0923285c617e33d682811c32c82a0d7787b5178b08fd4d4b951d03429ffafe177662017eee5ca38661ce109c703c91

  • SSDEEP

    98304:ui5npJADMupCYbQRYWGC2Unq55n3FtFqGCZBmfljAxJXl2l6U1is4Y4:ryMupCYc2fbVtNemtjAxJXNU1id

Malware Config

Extracted

Family

metasploit

Version

windows/single_exec

Signatures

  • Glupteba

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

  • Glupteba payload 23 IoCs
  • MetaSploit

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

  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Executes dropped EXE 2 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.

  • Manipulates WinMonFS driver. 1 IoCs

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

  • 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
  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • GoLang User-Agent 4 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
  • 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.

Processes

  • C:\Users\Admin\AppData\Local\Temp\f1ce03e1952a6c775828bce474f89cdf_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\f1ce03e1952a6c775828bce474f89cdf_JaffaCakes118.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:4648
    • C:\Users\Admin\AppData\Local\Temp\f1ce03e1952a6c775828bce474f89cdf_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\f1ce03e1952a6c775828bce474f89cdf_JaffaCakes118.exe"
      2⤵
      • Adds Run key to start application
      • 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:2436
      • 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:788
        • 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:4264
      • C:\Windows\rss\csrss.exe
        C:\Windows\rss\csrss.exe /188-188
        3⤵
        • Executes dropped EXE
        • Manipulates WinMonFS driver.
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4960
        • 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:4964
        • 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:4764

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

  • C:\Windows\rss\csrss.exe

    Filesize

    4.4MB

    MD5

    f1ce03e1952a6c775828bce474f89cdf

    SHA1

    65403b05bb419f9925487579a8e119310e9ae823

    SHA256

    80a3efd9ef8b22a8df2fe30b1b1e36281219c247afc7ce063d03c2b657477ec3

    SHA512

    cbeb85e21591896896f24f3592cf63ea9f0923285c617e33d682811c32c82a0d7787b5178b08fd4d4b951d03429ffafe177662017eee5ca38661ce109c703c91

  • memory/2436-7-0x0000000004E80000-0x00000000052CC000-memory.dmp

    Filesize

    4.3MB

  • memory/2436-8-0x0000000000400000-0x0000000003096000-memory.dmp

    Filesize

    44.6MB

  • memory/2436-12-0x0000000000400000-0x0000000003096000-memory.dmp

    Filesize

    44.6MB

  • memory/4648-2-0x0000000005270000-0x0000000005B96000-memory.dmp

    Filesize

    9.1MB

  • memory/4648-3-0x0000000000400000-0x0000000003096000-memory.dmp

    Filesize

    44.6MB

  • memory/4648-5-0x0000000000400000-0x0000000003096000-memory.dmp

    Filesize

    44.6MB

  • memory/4648-6-0x0000000005270000-0x0000000005B96000-memory.dmp

    Filesize

    9.1MB

  • memory/4648-1-0x0000000004E30000-0x0000000005270000-memory.dmp

    Filesize

    4.2MB

  • memory/4960-24-0x0000000000400000-0x0000000003096000-memory.dmp

    Filesize

    44.6MB

  • memory/4960-29-0x0000000000400000-0x0000000003096000-memory.dmp

    Filesize

    44.6MB

  • memory/4960-16-0x0000000000400000-0x0000000003096000-memory.dmp

    Filesize

    44.6MB

  • memory/4960-23-0x0000000005200000-0x0000000005700000-memory.dmp

    Filesize

    5.0MB

  • memory/4960-15-0x0000000005200000-0x0000000005700000-memory.dmp

    Filesize

    5.0MB

  • memory/4960-25-0x0000000000400000-0x0000000003096000-memory.dmp

    Filesize

    44.6MB

  • memory/4960-26-0x0000000000400000-0x0000000003096000-memory.dmp

    Filesize

    44.6MB

  • memory/4960-27-0x0000000000400000-0x0000000003096000-memory.dmp

    Filesize

    44.6MB

  • memory/4960-28-0x0000000000400000-0x0000000003096000-memory.dmp

    Filesize

    44.6MB

  • memory/4960-17-0x0000000000400000-0x0000000003096000-memory.dmp

    Filesize

    44.6MB

  • memory/4960-30-0x0000000000400000-0x0000000003096000-memory.dmp

    Filesize

    44.6MB

  • memory/4960-31-0x0000000000400000-0x0000000003096000-memory.dmp

    Filesize

    44.6MB

  • memory/4960-32-0x0000000000400000-0x0000000003096000-memory.dmp

    Filesize

    44.6MB

  • memory/4960-33-0x0000000000400000-0x0000000003096000-memory.dmp

    Filesize

    44.6MB

  • memory/4960-34-0x0000000000400000-0x0000000003096000-memory.dmp

    Filesize

    44.6MB

  • memory/4960-35-0x0000000000400000-0x0000000003096000-memory.dmp

    Filesize

    44.6MB

  • memory/4960-36-0x0000000000400000-0x0000000003096000-memory.dmp

    Filesize

    44.6MB

  • memory/4960-37-0x0000000000400000-0x0000000003096000-memory.dmp

    Filesize

    44.6MB