Analysis

  • max time kernel
    108s
  • max time network
    111s
  • platform
    windows10-1703_x64
  • resource
    win10-20231020-en
  • resource tags

    arch:x64arch:x86image:win10-20231020-enlocale:en-usos:windows10-1703-x64system
  • submitted
    07/11/2023, 06:00

General

  • Target

    add3896f57eedf9673d53f43ed6c5e7a21b6526f83aa0e8ba65220831acaad51.exe

  • Size

    256KB

  • MD5

    99ecfc4fb63beaac75976a944c1105cb

  • SHA1

    65676b2dd57b4043bd9ae9dcea57d041c12cb2f4

  • SHA256

    add3896f57eedf9673d53f43ed6c5e7a21b6526f83aa0e8ba65220831acaad51

  • SHA512

    1832306b4fec2522bfbab5204f74bd18daf1d5b22abaa9e61a59500c326fb5e2c6357e0797457914855eb373fb8fa03fb713486f860938d319db9d965b3b3344

  • SSDEEP

    6144:wZKz+F8lGEJSg29cTReU3NggdsDmW7MjEDdvyqdp:wHF8lGn0

Malware Config

Extracted

Family

stealc

C2

http://91.215.85.189

Attributes
  • url_path

    /43851895e447afd7.php

rc4.plain

Signatures

  • Stealc

    Stealc is an infostealer written in C++.

  • Downloads MZ/PE file
  • Loads dropped DLL 2 IoCs
  • 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.

  • 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\add3896f57eedf9673d53f43ed6c5e7a21b6526f83aa0e8ba65220831acaad51.exe
    "C:\Users\Admin\AppData\Local\Temp\add3896f57eedf9673d53f43ed6c5e7a21b6526f83aa0e8ba65220831acaad51.exe"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    PID:4752

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\ProgramData\mozglue.dll

          Filesize

          593KB

          MD5

          c8fd9be83bc728cc04beffafc2907fe9

          SHA1

          95ab9f701e0024cedfbd312bcfe4e726744c4f2e

          SHA256

          ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

          SHA512

          fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

        • \ProgramData\mozglue.dll

          Filesize

          593KB

          MD5

          c8fd9be83bc728cc04beffafc2907fe9

          SHA1

          95ab9f701e0024cedfbd312bcfe4e726744c4f2e

          SHA256

          ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

          SHA512

          fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

        • \ProgramData\nss3.dll

          Filesize

          2.0MB

          MD5

          1cc453cdf74f31e4d913ff9c10acdde2

          SHA1

          6e85eae544d6e965f15fa5c39700fa7202f3aafe

          SHA256

          ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

          SHA512

          dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

        • memory/4752-1-0x00000000007F0000-0x00000000008F0000-memory.dmp

          Filesize

          1024KB

        • memory/4752-2-0x0000000000400000-0x00000000007C9000-memory.dmp

          Filesize

          3.8MB

        • memory/4752-3-0x00000000008F0000-0x000000000090B000-memory.dmp

          Filesize

          108KB

        • memory/4752-4-0x0000000061E00000-0x0000000061EF3000-memory.dmp

          Filesize

          972KB

        • memory/4752-59-0x0000000000400000-0x00000000007C9000-memory.dmp

          Filesize

          3.8MB