Analysis

  • max time kernel
    148s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07-04-2024 19:41

General

  • Target

    e5b592e5d59cc9eaf78c2cc5ef554171_JaffaCakes118.exe

  • Size

    85KB

  • MD5

    e5b592e5d59cc9eaf78c2cc5ef554171

  • SHA1

    257a922c0278e174d8ac2200c373028ad4ec663d

  • SHA256

    7675ab50699f3a876018fd3378946d59dfbcd5d4a3e7be7fee30f5216d9298c4

  • SHA512

    bfd8e9257459f9d27baca1baa481ed16dfcc8ee3609c22ee7b054458c4f405f19a3400255b49a28496225aefd295cdf478cfe3ef8c76ad20124fcf42196cd61e

  • SSDEEP

    1536:SKcR4mjD9r823Fq8rUi/S8lEx1aPtOA4+ewMyI+08mIpEv6ePKc7H:SKcWmjRrz33rUp8lEx1aPtNIwdk5vx7H

Malware Config

Signatures

  • Executes dropped EXE 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • UPX packed file 6 IoCs

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

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in Windows directory 2 IoCs
  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e5b592e5d59cc9eaf78c2cc5ef554171_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\e5b592e5d59cc9eaf78c2cc5ef554171_JaffaCakes118.exe"
    1⤵
    • Adds Run key to start application
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4332
    • C:\Users\Admin\AppData\Local\Temp\KnMOA6FzUKY6psh.exe
      C:\Users\Admin\AppData\Local\Temp\KnMOA6FzUKY6psh.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:2984
      • C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe
        dw20.exe -x -s 804
        3⤵
        • Checks processor information in registry
        • Enumerates system info in registry
        • Suspicious use of AdjustPrivilegeToken
        PID:2648
    • C:\Windows\CTS.exe
      "C:\Windows\CTS.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      PID:4776

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml

    Filesize

    352KB

    MD5

    55be7f9f56974953e2bf17a256160a53

    SHA1

    bc9332df52a216db59cecb1b5fa28cd6d3f6f7e8

    SHA256

    e5d6a20b2543d478634a313dfb1771e1154be28466895d52a522fb98c7c78214

    SHA512

    63a1e1491aa9a9eccd7dc12db3062c29148e72b30a201d5abfa0b6fc09574e7dbfe861c897f062d9a3d4955c87e44a3a75f4440cb2c5b7c28175c35001cd19bf

  • C:\Users\Admin\AppData\Local\Temp\KnMOA6FzUKY6psh.exe

    Filesize

    56KB

    MD5

    e115521ba14b75f53dcdff087ec6898f

    SHA1

    87103a892bb514a93d485fba221bacb9da3aae25

    SHA256

    59b284d0ad4c2634938e70fae67d9048bd98422d052fbd745a9b80b5fae7ae29

    SHA512

    ab3d097bcf11bf7327a28124052b210f5fb13b9bfb9b7376cae1ba5c30182a330506935288a7fe06b7e3fdd82b57f5c31638f1c301738342819c772b346fa35a

  • C:\Windows\CTS.exe

    Filesize

    29KB

    MD5

    70aa23c9229741a9b52e5ce388a883ac

    SHA1

    b42683e21e13de3f71db26635954d992ebe7119e

    SHA256

    9d25cc704b1c00c9d17903e25ca35c319663e997cb9da0b116790b639e9688f2

    SHA512

    be604a2ad5ab8a3e5edb8901016a76042ba873c8d05b4ef8eec31241377ec6b2a883b51c6912dc7640581ffa624547db334683975883ae74e62808b5ae9ab0b5

  • memory/2984-27-0x00007FF8BF440000-0x00007FF8BFDE1000-memory.dmp

    Filesize

    9.6MB

  • memory/2984-28-0x00007FF8BF440000-0x00007FF8BFDE1000-memory.dmp

    Filesize

    9.6MB

  • memory/2984-29-0x0000000001110000-0x0000000001120000-memory.dmp

    Filesize

    64KB

  • memory/2984-39-0x00007FF8BF440000-0x00007FF8BFDE1000-memory.dmp

    Filesize

    9.6MB

  • memory/4332-0-0x0000000000530000-0x0000000000547000-memory.dmp

    Filesize

    92KB

  • memory/4332-7-0x0000000000530000-0x0000000000547000-memory.dmp

    Filesize

    92KB

  • memory/4776-9-0x0000000000D30000-0x0000000000D47000-memory.dmp

    Filesize

    92KB

  • memory/4776-40-0x0000000000D30000-0x0000000000D47000-memory.dmp

    Filesize

    92KB