Analysis

  • max time kernel
    94s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-12-2024 07:28

General

  • Target

    b78011a22cc4226acf52abd21e62f47a_JaffaCakes118.exe

  • Size

    210KB

  • MD5

    b78011a22cc4226acf52abd21e62f47a

  • SHA1

    103729da12ada8d53c9bfb36096f73eb258e3683

  • SHA256

    f57655066ebcdaf2124891f3eb14cc6e0a03b82f49343a9ce342bb8d5727df44

  • SHA512

    00ed133830a37357eea70bef9c25f885f92cb4d29bbe8a47c2a543d6c8dc4fd8a9666b70b2a00e36e29cafe25105e8c4ceda16875217ec2bc20004a1c9c6df65

  • SSDEEP

    3072:sr85CEIHIjsTee3hYzmEG69rTeQ4yMx/gfytY0ss2pn7sW7tiosehb1:k9QspRYDZ9NHa6/0sTp7sWZ/h5

Malware Config

Signatures

  • Detect Neshta payload 5 IoCs
  • Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • Neshta family
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Drops desktop.ini file(s) 3 IoCs
  • UPX packed file 6 IoCs

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

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b78011a22cc4226acf52abd21e62f47a_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\b78011a22cc4226acf52abd21e62f47a_JaffaCakes118.exe"
    1⤵
    • Checks computer location settings
    • Modifies system executable filetype association
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:3032
    • C:\Users\Admin\AppData\Local\Temp\3582-490\b78011a22cc4226acf52abd21e62f47a_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\b78011a22cc4226acf52abd21e62f47a_JaffaCakes118.exe"
      2⤵
      • Executes dropped EXE
      • Drops desktop.ini file(s)
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:2268
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2268 -s 812
        3⤵
        • Program crash
        PID:376
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3032 -s 1060
      2⤵
      • Program crash
      PID:4312
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 2268 -ip 2268
    1⤵
      PID:3992
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3032 -ip 3032
      1⤵
        PID:2172

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE

        Filesize

        86KB

        MD5

        0c3c153868005aba5bd10dc164078ad1

        SHA1

        e47e574aa0d6d9bb88e00eb28d02df24735166ea

        SHA256

        909748f3fc8c433c2cfa19465858a98a163a30676e3e94de56a9364dba02c739

        SHA512

        82dc76a67eb6952b1446f5705f35ec6e45d5f4f4fcdc893ff39e3b0103a8884070ac8f30fe8c24ce97a0c2541ed1b349f4f4b95dac8d4736c185e887b21496dd

      • C:\Users\Admin\AppData\Local\Temp\3582-490\b78011a22cc4226acf52abd21e62f47a_JaffaCakes118.exe

        Filesize

        169KB

        MD5

        5f7e6337df7c631ba010a3f82e83b0ef

        SHA1

        083abcfbb5e65631bcb43a3ef21bf0392cd1d319

        SHA256

        1abf499b1fb99a07d974340ad9049ab9f194f63e79bd75639e34cd72123b09bf

        SHA512

        331114f7b2b9ae27b9bfd33593f64ac0a3f3c80ae5b8702fad447543b98e7026b665e1043c8e9bcd45f35e957cf10434fa9f3a02e47cf6d9e541f4da4cf0b6a9

      • memory/2268-12-0x0000000000400000-0x00000000004B6000-memory.dmp

        Filesize

        728KB

      • memory/2268-98-0x0000000000400000-0x00000000004B6000-memory.dmp

        Filesize

        728KB

      • memory/2268-97-0x0000000000400000-0x00000000004B6000-memory.dmp

        Filesize

        728KB

      • memory/2268-100-0x0000000000400000-0x00000000004B6000-memory.dmp

        Filesize

        728KB

      • memory/2268-102-0x0000000000400000-0x00000000004B6000-memory.dmp

        Filesize

        728KB

      • memory/3032-96-0x0000000000400000-0x000000000041B000-memory.dmp

        Filesize

        108KB

      • memory/3032-99-0x0000000000400000-0x000000000041B000-memory.dmp

        Filesize

        108KB

      • memory/3032-103-0x0000000000400000-0x000000000041B000-memory.dmp

        Filesize

        108KB

      • memory/3032-105-0x0000000000400000-0x000000000041B000-memory.dmp

        Filesize

        108KB