Analysis

  • max time kernel
    118s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    03-04-2024 21:13

General

  • Target

    a6d253e02a22e26939f3d775ee1127cd_JaffaCakes118.exe

  • Size

    123KB

  • MD5

    a6d253e02a22e26939f3d775ee1127cd

  • SHA1

    a8e827a9c4916a4b85e5e783764173df0dadd116

  • SHA256

    61722636c5cad31d212e7ea1da55d4fde3a7e93fc46f81484dd7597a684a8164

  • SHA512

    dc13d3e6a721cc2673663d0b70fcae92ed2316f4b247039dcdf8e6312a0525fc14209c4c1f860da3d04939095f1f7a912d60b20f0242dbf6ff95bc341eaada82

  • SSDEEP

    1536:cTCOJOQA7yTatlYBMcnAXqPprska5ayVD:cTnUyTatnEAaPpa5ayJ

Malware Config

Extracted

Family

purecrypter

C2

https://cdn.discordapp.com/attachments/897455876376522762/899558260732989531/File.png

Signatures

  • PureCrypter

    PureCrypter is a .NET malware loader first seen in early 2021.

  • Program crash 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a6d253e02a22e26939f3d775ee1127cd_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\a6d253e02a22e26939f3d775ee1127cd_JaffaCakes118.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:640
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 640 -s 1544
      2⤵
      • Program crash
      PID:2792

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

    Filesize

    68KB

    MD5

    29f65ba8e88c063813cc50a4ea544e93

    SHA1

    05a7040d5c127e68c25d81cc51271ffb8bef3568

    SHA256

    1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

    SHA512

    e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

  • C:\Users\Admin\AppData\Local\Temp\TarF5DB.tmp

    Filesize

    177KB

    MD5

    435a9ac180383f9fa094131b173a2f7b

    SHA1

    76944ea657a9db94f9a4bef38f88c46ed4166983

    SHA256

    67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34

    SHA512

    1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a

  • memory/640-1-0x0000000074A00000-0x00000000750EE000-memory.dmp

    Filesize

    6.9MB

  • memory/640-0-0x0000000000200000-0x0000000000226000-memory.dmp

    Filesize

    152KB

  • memory/640-2-0x0000000004B80000-0x0000000004BC0000-memory.dmp

    Filesize

    256KB

  • memory/640-3-0x0000000074A00000-0x00000000750EE000-memory.dmp

    Filesize

    6.9MB

  • memory/640-4-0x0000000004B80000-0x0000000004BC0000-memory.dmp

    Filesize

    256KB