Analysis

  • max time kernel
    121s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    02/10/2024, 05:48

General

  • Target

    33cbd0e0fa5ac49cb28c3f095077c7b82cc6127d78a0024eff5e5d9f3fc12029.exe

  • Size

    1.8MB

  • MD5

    7c170238c3fdf496e5420134b8f2c1e6

  • SHA1

    45c78f3c1f17a5cb39fe957ee144b69c6fc81211

  • SHA256

    33cbd0e0fa5ac49cb28c3f095077c7b82cc6127d78a0024eff5e5d9f3fc12029

  • SHA512

    af3366534e37f3aab1823a121fe88f2176c1ea64c7f940de4063a69551a118629f7832f7171cf4f88e076c6d6a04d9d5a96aa3493f447d54d961cec420491fac

  • SSDEEP

    49152:KZJAJB41PcUGRVoEDXVfi60LGv6zk565Po:CAQhcUGUEDXVfauT4P

Malware Config

Extracted

Family

stealc

Botnet

doma

C2

http://185.215.113.37

Attributes
  • url_path

    /e2b1563c6670f193.php

Signatures

  • Stealc

    Stealc is an infostealer written in C++.

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Downloads MZ/PE file
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Identifies Wine through registry keys 2 TTPs 1 IoCs

    Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

  • 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 3 TTPs

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

  • Unsecured Credentials: Credentials In Files 1 TTPs

    Steal credentials from unsecured files.

  • 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.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\33cbd0e0fa5ac49cb28c3f095077c7b82cc6127d78a0024eff5e5d9f3fc12029.exe
    "C:\Users\Admin\AppData\Local\Temp\33cbd0e0fa5ac49cb28c3f095077c7b82cc6127d78a0024eff5e5d9f3fc12029.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Identifies Wine through registry keys
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • System Location Discovery: System Language Discovery
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    PID:2120

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • \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/2120-0-0x0000000000A00000-0x000000000109A000-memory.dmp

          Filesize

          6.6MB

        • memory/2120-1-0x0000000077810000-0x0000000077812000-memory.dmp

          Filesize

          8KB

        • memory/2120-3-0x0000000000A00000-0x000000000109A000-memory.dmp

          Filesize

          6.6MB

        • memory/2120-2-0x0000000000A01000-0x0000000000A24000-memory.dmp

          Filesize

          140KB

        • memory/2120-4-0x0000000061E00000-0x0000000061EF3000-memory.dmp

          Filesize

          972KB

        • memory/2120-42-0x0000000000A00000-0x000000000109A000-memory.dmp

          Filesize

          6.6MB

        • memory/2120-60-0x0000000000A00000-0x000000000109A000-memory.dmp

          Filesize

          6.6MB

        • memory/2120-66-0x0000000000A00000-0x000000000109A000-memory.dmp

          Filesize

          6.6MB

        • memory/2120-67-0x0000000000A00000-0x000000000109A000-memory.dmp

          Filesize

          6.6MB