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Analysis

  • max time kernel
    122s
  • max time network
    126s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    13/10/2024, 17:40

General

  • Target

    4133fe3eec5cd55b6f4de6fa8ed17b90_JaffaCakes118.exe

  • Size

    137KB

  • MD5

    4133fe3eec5cd55b6f4de6fa8ed17b90

  • SHA1

    0c2e5541efb6f715ceab690ed694a867a6e41f3b

  • SHA256

    e1bd23dbdcfc912012f110977a911e5c64a2b5c82ba393ff36c8ba454c3b85fb

  • SHA512

    9b7bff0b0d067713137cc355aa40163b1586612d47c9102fdd744ae69bab76e305611b091e13f81f6eefab75b6707fa616c6cfacdc9073d4be0e7592f51db631

  • SSDEEP

    3072:/trUTOOAwmgu0mMBCWajxnE1bASCBLoz+qcfhUmoPT/:/trkhAn0msCjGASAqR

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • UPX packed file 3 IoCs

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

  • Drops file in Windows directory 4 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 Internet Explorer settings 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of UnmapMainImage 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4133fe3eec5cd55b6f4de6fa8ed17b90_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\4133fe3eec5cd55b6f4de6fa8ed17b90_JaffaCakes118.exe"
    1⤵
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:2536
    • C:\Windows\Yfazya.exe
      C:\Windows\Yfazya.exe
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Modifies Internet Explorer settings
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of UnmapMainImage
      PID:2792

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\Tasks\{62C40AA6-4406-467a-A5A5-DFDF1B559B7A}.job

    Filesize

    372B

    MD5

    3f9edf8bb2f6aab18d5015d4e5dfd002

    SHA1

    908d388145b680c275bbd3a4c58516b458d4d491

    SHA256

    b13b508fa362c375460e6020677e48859875db647f5a5ad39f5cb4a310919ead

    SHA512

    4c0df0486f9a7032087f5a935e774985d3ee89c801d87efabc724477ede9eb972150fb6b5834eae3cde6ede787c0f94a635b0c315e0cee0a0b3d6eb44e99e22b

  • C:\Windows\Yfazya.exe

    Filesize

    137KB

    MD5

    4133fe3eec5cd55b6f4de6fa8ed17b90

    SHA1

    0c2e5541efb6f715ceab690ed694a867a6e41f3b

    SHA256

    e1bd23dbdcfc912012f110977a911e5c64a2b5c82ba393ff36c8ba454c3b85fb

    SHA512

    9b7bff0b0d067713137cc355aa40163b1586612d47c9102fdd744ae69bab76e305611b091e13f81f6eefab75b6707fa616c6cfacdc9073d4be0e7592f51db631

  • memory/2536-12-0x0000000000400000-0x000000000043B000-memory.dmp

    Filesize

    236KB

  • memory/2536-3-0x0000000000400000-0x000000000043A000-memory.dmp

    Filesize

    232KB

  • memory/2536-2-0x00000000002C0000-0x00000000002C1000-memory.dmp

    Filesize

    4KB

  • memory/2536-0-0x0000000000400000-0x000000000043B000-memory.dmp

    Filesize

    236KB

  • memory/2536-15-0x0000000000401000-0x0000000000402000-memory.dmp

    Filesize

    4KB

  • memory/2536-1-0x0000000000401000-0x0000000000402000-memory.dmp

    Filesize

    4KB

  • memory/2536-10700-0x00000000003A0000-0x00000000003DB000-memory.dmp

    Filesize

    236KB

  • memory/2536-23789-0x0000000000400000-0x000000000043A000-memory.dmp

    Filesize

    232KB

  • memory/2792-13-0x0000000000400000-0x000000000043B000-memory.dmp

    Filesize

    236KB

  • memory/2792-20-0x0000000000400000-0x000000000043A000-memory.dmp

    Filesize

    232KB

  • memory/2792-48532-0x0000000000400000-0x000000000043A000-memory.dmp

    Filesize

    232KB