Analysis

  • max time kernel
    146s
  • max time network
    152s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240419-en
  • resource tags

    arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    20-05-2024 15:32

General

  • Target

    1707ca614484545a2411aa38fd1205812a732aeac5378cb6af7c3bab9d91131f.exe

  • Size

    228KB

  • MD5

    9bf08871d45df7b29733ec65f7c8251d

  • SHA1

    d98f3b80c92e46b138475404300f6cdaadb82d9a

  • SHA256

    1707ca614484545a2411aa38fd1205812a732aeac5378cb6af7c3bab9d91131f

  • SHA512

    678343eb9be3996921804826d857c257d59580d47c66c0e05c5a611505ceebe2733bcc82970eb0cea0babcf9e37f362a6fa314728b645dd074e419af1d834aee

  • SSDEEP

    3072:mc9uO6r/Nibu2Bm+AmBQuJ+bTlPY0zJ8V/cSPwVp1g6FBa9Mj7V8AZ40Uda:mnioGVJ+bTlPYwJ8fPO3g6F0o73Z40

Malware Config

Extracted

Family

stealc

Botnet

default11

C2

http://185.172.128.170

Attributes
  • url_path

    /7043a0c6a68d9c65.php

Signatures

  • Stealc

    Stealc is an infostealer written in C++.

  • Downloads MZ/PE file
  • Loads dropped DLL 2 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1707ca614484545a2411aa38fd1205812a732aeac5378cb6af7c3bab9d91131f.exe
    "C:\Users\Admin\AppData\Local\Temp\1707ca614484545a2411aa38fd1205812a732aeac5378cb6af7c3bab9d91131f.exe"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    PID:3692
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3692 -s 2028
      2⤵
      • Program crash
      PID:5052
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 3692 -ip 3692
    1⤵
      PID:4960

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\Are.docx

      Filesize

      11KB

      MD5

      a33e5b189842c5867f46566bdbf7a095

      SHA1

      e1c06359f6a76da90d19e8fd95e79c832edb3196

      SHA256

      5abf8e3d1f78de7b09d7f6fb87f9e80e60caacf13ef3c1289665653dacd7c454

      SHA512

      f2ad3812ec9b915e9618539b0f103f2e9acaad25fbbacd84941c954ce070af231324e83a4621e951c1dbae8d40d50410954e40dd52bbd46e34c54b0d1957407b

    • C:\ProgramData\mozglue.dll

      Filesize

      593KB

      MD5

      c8fd9be83bc728cc04beffafc2907fe9

      SHA1

      95ab9f701e0024cedfbd312bcfe4e726744c4f2e

      SHA256

      ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

      SHA512

      fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

    • C:\ProgramData\nss3.dll

      Filesize

      2.0MB

      MD5

      1cc453cdf74f31e4d913ff9c10acdde2

      SHA1

      6e85eae544d6e965f15fa5c39700fa7202f3aafe

      SHA256

      ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

      SHA512

      dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

    • memory/3692-2-0x0000000002340000-0x0000000002367000-memory.dmp

      Filesize

      156KB

    • memory/3692-3-0x0000000000400000-0x000000000063B000-memory.dmp

      Filesize

      2.2MB

    • memory/3692-1-0x00000000006D0000-0x00000000007D0000-memory.dmp

      Filesize

      1024KB

    • memory/3692-4-0x0000000061E00000-0x0000000061EF3000-memory.dmp

      Filesize

      972KB

    • memory/3692-80-0x0000000000400000-0x000000000063B000-memory.dmp

      Filesize

      2.2MB