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Analysis

  • max time kernel
    149s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/08/2024, 10:15

General

  • Target

    aa9bb6ba3dfeca63c997ec2da89fb61c_JaffaCakes118.exe

  • Size

    360KB

  • MD5

    aa9bb6ba3dfeca63c997ec2da89fb61c

  • SHA1

    26d783f02245a10c60d291d3f95f071695685fb7

  • SHA256

    94a2dcfdbce60c902ff131b2304d7b2ecd1c2eb4e84faa391f1c926f27da67cb

  • SHA512

    86a5c320062c91319714f331fe40866469c837d301d07b54e8a1e1a60e387d066b2d3058e33a0040fa783bca24705902a34640ee52b4f9ad45776c5db674d463

  • SSDEEP

    6144:U4rvXy29kyG1X1tZuwmzFBPjQ1LcWEi2Keamies6Oo418ufBJBL6Hg9JLaNgkiE1:U4rvXtvu1exHPjPbKvqs689LUg9YWKhj

Malware Config

Signatures

  • Modifies Windows Firewall 2 TTPs 3 IoCs
  • ASPack v2.12-2.42 1 IoCs

    Detects executables packed with ASPack v2.12-2.42

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops file in System32 directory 6 IoCs
  • Drops file in Program Files directory 1 IoCs
  • Drops file in Windows directory 5 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 9 IoCs

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

  • Event Triggered Execution: Screensaver 1 TTPs 3 IoCs

    Screensavers are programs that execute after a configurable time of user inactivity and consist of Portable Executable (PE) files with a .scr file extension.

  • System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

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

  • Modifies Control Panel 5 IoCs
  • Modifies registry class 20 IoCs
  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\aa9bb6ba3dfeca63c997ec2da89fb61c_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\aa9bb6ba3dfeca63c997ec2da89fb61c_JaffaCakes118.exe"
    1⤵
    • Checks computer location settings
    • Drops file in System32 directory
    • Drops file in Windows directory
    • Event Triggered Execution: Screensaver
    • System Location Discovery: System Language Discovery
    • Modifies Control Panel
    • Modifies registry class
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:3404
    • C:\Windows\system\csrss.exe
      "C:\Windows\system\csrss.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops file in System32 directory
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:3032
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c C:\Windows\system32\AUTOEXEC.BAT
        3⤵
        • Drops file in System32 directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3728
        • C:\Windows\SysWOW64\net.exe
          net stop "Internet Connection Firewall (ICF) / Internet Connection Sharing (ICS)"
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:1368
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 stop "Internet Connection Firewall (ICF) / Internet Connection Sharing (ICS)"
            5⤵
            • System Location Discovery: System Language Discovery
            PID:2800
        • C:\Windows\SysWOW64\netsh.exe
          netsh firewall set notifications disable
          4⤵
          • Modifies Windows Firewall
          • Event Triggered Execution: Netsh Helper DLL
          • System Location Discovery: System Language Discovery
          PID:4416
        • C:\Windows\SysWOW64\netsh.exe
          netsh firewall set opmode enable enable
          4⤵
          • Modifies Windows Firewall
          • Event Triggered Execution: Netsh Helper DLL
          • System Location Discovery: System Language Discovery
          PID:3580
        • C:\Windows\SysWOW64\netsh.exe
          netsh firewall add allowedprogram C:\Windows\system\csrss.exe POCO
          4⤵
          • Modifies Windows Firewall
          • Event Triggered Execution: Netsh Helper DLL
          • System Location Discovery: System Language Discovery
          PID:4848
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c C:\Windows\system32\AUTOEXEC.BAT
        3⤵
        • Drops file in System32 directory
        • System Location Discovery: System Language Discovery
        PID:1132

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\IsUn0404.exe

    Filesize

    360KB

    MD5

    aa9bb6ba3dfeca63c997ec2da89fb61c

    SHA1

    26d783f02245a10c60d291d3f95f071695685fb7

    SHA256

    94a2dcfdbce60c902ff131b2304d7b2ecd1c2eb4e84faa391f1c926f27da67cb

    SHA512

    86a5c320062c91319714f331fe40866469c837d301d07b54e8a1e1a60e387d066b2d3058e33a0040fa783bca24705902a34640ee52b4f9ad45776c5db674d463

  • C:\Windows\SysWOW64\AUTOEXEC.BAT

    Filesize

    366B

    MD5

    cf56cc2f83b625e928ca9b0f8aeee2e0

    SHA1

    46f04dc7ff7fbd70a8383cdb653d406d4bb5e074

    SHA256

    d07d1b719d993a7969ef14e6940ca373af62aeaf2a91f6d51a895adddc91964d

    SHA512

    199a7b47ce56f73d3f07bdc0cbfd8a4e5fe5041fad07bce4c6e9e60d86bb23ea460ff24bef81edb8dde8484cdc9fe967f7d324258510ae8a718c4c566cf342da

  • memory/3032-53-0x0000000000400000-0x00000000004FA000-memory.dmp

    Filesize

    1000KB

  • memory/3032-54-0x0000000000400000-0x00000000004FA000-memory.dmp

    Filesize

    1000KB

  • memory/3032-40-0x00000000025C0000-0x00000000025C1000-memory.dmp

    Filesize

    4KB

  • memory/3032-64-0x0000000000400000-0x00000000004FA000-memory.dmp

    Filesize

    1000KB

  • memory/3032-50-0x00000000025C0000-0x00000000025C1000-memory.dmp

    Filesize

    4KB

  • memory/3032-49-0x0000000000400000-0x00000000004FA000-memory.dmp

    Filesize

    1000KB

  • memory/3032-51-0x0000000000400000-0x00000000004FA000-memory.dmp

    Filesize

    1000KB

  • memory/3032-52-0x0000000000400000-0x00000000004FA000-memory.dmp

    Filesize

    1000KB

  • memory/3032-63-0x0000000000400000-0x00000000004FA000-memory.dmp

    Filesize

    1000KB

  • memory/3032-62-0x0000000000400000-0x00000000004FA000-memory.dmp

    Filesize

    1000KB

  • memory/3032-55-0x0000000000400000-0x00000000004FA000-memory.dmp

    Filesize

    1000KB

  • memory/3032-56-0x0000000000400000-0x00000000004FA000-memory.dmp

    Filesize

    1000KB

  • memory/3032-57-0x0000000000400000-0x00000000004FA000-memory.dmp

    Filesize

    1000KB

  • memory/3032-58-0x0000000000400000-0x00000000004FA000-memory.dmp

    Filesize

    1000KB

  • memory/3032-59-0x0000000000400000-0x00000000004FA000-memory.dmp

    Filesize

    1000KB

  • memory/3032-60-0x0000000000400000-0x00000000004FA000-memory.dmp

    Filesize

    1000KB

  • memory/3032-61-0x0000000000400000-0x00000000004FA000-memory.dmp

    Filesize

    1000KB

  • memory/3404-39-0x0000000000400000-0x00000000004FA000-memory.dmp

    Filesize

    1000KB

  • memory/3404-0-0x0000000000400000-0x00000000004FA000-memory.dmp

    Filesize

    1000KB

  • memory/3404-1-0x0000000000810000-0x0000000000811000-memory.dmp

    Filesize

    4KB