Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    26-12-2024 19:56

General

  • Target

    JaffaCakes118_d3c708c3476bbd5fcfbd16a36f61914088161260390e6125c3e235990cb85bf2.exe

  • Size

    4.3MB

  • MD5

    a3405442db2c5ab53c96e9dc63cb107a

  • SHA1

    a0a85c15a60c9c7bdf62dbbff36a2c7cb113f86f

  • SHA256

    d3c708c3476bbd5fcfbd16a36f61914088161260390e6125c3e235990cb85bf2

  • SHA512

    a1afa34d261537d85e464132eb9b202cf6ded47bec81c8956a5836e0ce3f588826da0585b8eb8b107ade98c3cd171a6aced08905c04207d27c60bdf420efd91e

  • SSDEEP

    98304:y74w07859zsJDz39VDPvmN1uN5jadHNs9PcL:tw04wJDzNVTuzuTudS9k

Malware Config

Extracted

Family

metasploit

Version

windows/single_exec

Signatures

  • Glupteba

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

  • Glupteba family
  • Glupteba payload 21 IoCs
  • MetaSploit

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

  • Metasploit family
  • Windows security bypass 2 TTPs 10 IoCs
  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 11 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.

  • 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.

  • 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.

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

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

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 11 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\JaffaCakes118_d3c708c3476bbd5fcfbd16a36f61914088161260390e6125c3e235990cb85bf2.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_d3c708c3476bbd5fcfbd16a36f61914088161260390e6125c3e235990cb85bf2.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:2268
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_d3c708c3476bbd5fcfbd16a36f61914088161260390e6125c3e235990cb85bf2.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_d3c708c3476bbd5fcfbd16a36f61914088161260390e6125c3e235990cb85bf2.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:2620
      • 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:2200
        • 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:2100
      • C:\Windows\rss\csrss.exe
        C:\Windows\rss\csrss.exe /301-301
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Modifies system certificate store
        • Suspicious use of AdjustPrivilegeToken
        PID:2612
        • 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:1216
        • C:\Windows\system32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:2212
          • 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:2664
    • C:\Windows\system32\makecab.exe
      "C:\Windows\system32\makecab.exe" C:\Windows\Logs\CBS\CbsPersist_20241226195641.log C:\Windows\Logs\CBS\CbsPersist_20241226195641.cab
      1⤵
      • Drops file in Windows directory
      PID:2608

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      1.7MB

      MD5

      13aaafe14eb60d6a718230e82c671d57

      SHA1

      e039dd924d12f264521b8e689426fb7ca95a0a7b

      SHA256

      f44a7deb678ae7bbaaadf88e4c620d7cdf7e6831a1656c456545b1c06feb4ef3

      SHA512

      ade02218c0fd1ef9290c3113cf993dd89e87d4fb66fa1b34afdc73c84876123cd742d2a36d8daa95e2a573d2aa7e880f3c8ba0c5c91916ed15e7c4f6ff847de3

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

      Filesize

      1.5MB

      MD5

      f0616fa8bc54ece07e3107057f74e4db

      SHA1

      b33995c4f9a004b7d806c4bb36040ee844781fca

      SHA256

      6e58fcf4d763022b1f79a3c448eb2ebd8ad1c15df3acf58416893f1cbc699026

      SHA512

      15242e3f5652d7f1d0e31cebadfe2f238ca3222f0e927eb7feb644ab2b3d33132cf2316ee5089324f20f72f1650ad5bb8dd82b96518386ce5b319fb5ceb8313c

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

      Filesize

      5.3MB

      MD5

      1afff8d5352aecef2ecd47ffa02d7f7d

      SHA1

      8b115b84efdb3a1b87f750d35822b2609e665bef

      SHA256

      c41acc53cde89b94d55d6932ddd55a212ba910e1fade3da138670bb5b18ae4e1

      SHA512

      e5dc54c60be702e11772dc729eec5ec7140f293545aa3d57282adacddf686483393b0c940bbd397a9d50a6cda093865b143ae00c51ce3bf5d6b00241f97b3cdb

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

      Filesize

      591KB

      MD5

      e2f68dc7fbd6e0bf031ca3809a739346

      SHA1

      9c35494898e65c8a62887f28e04c0359ab6f63f5

      SHA256

      b74cd24cef07f0226e7b777f7862943faee4cf288178b423d5344b0769dc15d4

      SHA512

      26256a12b5b8b3a40b34f18e081cdb45ea11845589c9d458a79385a4b8178f32164b417ddc9346fab8299bc6d4b9fedb620274c4edf9321424f37a2e2a6de579

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

      Filesize

      163KB

      MD5

      5c399d34d8dc01741269ff1f1aca7554

      SHA1

      e0ceed500d3cef5558f3f55d33ba9c3a709e8f55

      SHA256

      e11e0f7804bfc485b19103a940be3d382f31c1378caca0c63076e27797d7553f

      SHA512

      8ff9d38b22d73c595cc417427b59f5ca8e1fb7b47a2fa6aef25322bf6e614d6b71339a752d779bd736b4c1057239100ac8cc62629fd5d6556785a69bcdc3d73d

    • \Windows\rss\csrss.exe

      Filesize

      4.3MB

      MD5

      a3405442db2c5ab53c96e9dc63cb107a

      SHA1

      a0a85c15a60c9c7bdf62dbbff36a2c7cb113f86f

      SHA256

      d3c708c3476bbd5fcfbd16a36f61914088161260390e6125c3e235990cb85bf2

      SHA512

      a1afa34d261537d85e464132eb9b202cf6ded47bec81c8956a5836e0ce3f588826da0585b8eb8b107ade98c3cd171a6aced08905c04207d27c60bdf420efd91e

    • memory/2268-3-0x0000000000400000-0x0000000000CBD000-memory.dmp

      Filesize

      8.7MB

    • memory/2268-6-0x0000000004D30000-0x00000000055D2000-memory.dmp

      Filesize

      8.6MB

    • memory/2268-7-0x0000000000400000-0x0000000000CBD000-memory.dmp

      Filesize

      8.7MB

    • memory/2268-4-0x0000000000400000-0x0000000002F41000-memory.dmp

      Filesize

      43.3MB

    • memory/2268-0-0x0000000004920000-0x0000000004D2F000-memory.dmp

      Filesize

      4.1MB

    • memory/2268-5-0x0000000004920000-0x0000000004D2F000-memory.dmp

      Filesize

      4.1MB

    • memory/2268-2-0x0000000004D30000-0x00000000055D2000-memory.dmp

      Filesize

      8.6MB

    • memory/2268-1-0x0000000004920000-0x0000000004D2F000-memory.dmp

      Filesize

      4.1MB

    • memory/2612-69-0x0000000000400000-0x0000000002F41000-memory.dmp

      Filesize

      43.3MB

    • memory/2612-72-0x0000000000400000-0x0000000002F41000-memory.dmp

      Filesize

      43.3MB

    • memory/2612-18-0x00000000049C0000-0x0000000004DCF000-memory.dmp

      Filesize

      4.1MB

    • memory/2612-85-0x0000000000400000-0x0000000002F41000-memory.dmp

      Filesize

      43.3MB

    • memory/2612-52-0x0000000000400000-0x0000000002F41000-memory.dmp

      Filesize

      43.3MB

    • memory/2612-76-0x0000000000400000-0x0000000002F41000-memory.dmp

      Filesize

      43.3MB

    • memory/2612-65-0x0000000000400000-0x0000000002F41000-memory.dmp

      Filesize

      43.3MB

    • memory/2612-66-0x0000000000400000-0x0000000002F41000-memory.dmp

      Filesize

      43.3MB

    • memory/2612-67-0x0000000000400000-0x0000000002F41000-memory.dmp

      Filesize

      43.3MB

    • memory/2612-68-0x0000000000400000-0x0000000002F41000-memory.dmp

      Filesize

      43.3MB

    • memory/2612-75-0x0000000000400000-0x0000000002F41000-memory.dmp

      Filesize

      43.3MB

    • memory/2612-70-0x0000000000400000-0x0000000002F41000-memory.dmp

      Filesize

      43.3MB

    • memory/2612-71-0x0000000000400000-0x0000000002F41000-memory.dmp

      Filesize

      43.3MB

    • memory/2612-74-0x0000000000400000-0x0000000002F41000-memory.dmp

      Filesize

      43.3MB

    • memory/2612-73-0x0000000000400000-0x0000000002F41000-memory.dmp

      Filesize

      43.3MB

    • memory/2620-17-0x0000000000400000-0x0000000002F41000-memory.dmp

      Filesize

      43.3MB

    • memory/2620-8-0x0000000004970000-0x0000000004D7F000-memory.dmp

      Filesize

      4.1MB

    • memory/2664-25-0x0000000000550000-0x0000000000B38000-memory.dmp

      Filesize

      5.9MB

    • memory/2664-53-0x0000000000550000-0x0000000000B38000-memory.dmp

      Filesize

      5.9MB

    • memory/2664-39-0x00000000007A0000-0x0000000000D88000-memory.dmp

      Filesize

      5.9MB