Analysis

  • max time kernel
    93s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-12-2024 09:08

General

  • Target

    Nexus/Nexus Executor.exe

  • Size

    41KB

  • MD5

    a586b36675aec8a5c6ed50e92d388784

  • SHA1

    68aa3dc9f30bfe1106f5d674a7d44b995879aa24

  • SHA256

    3ade02051c85f82194e21864aac14868db1d62e925bf66c0ec3a537637ebdaee

  • SHA512

    b69ac478c26ee6fbbcbdf4b94dd585e9263b51173e8f2f4b8032d7d5421605872a5d3eff3c0fc32fc9e281f0bad9f5471c4ed1543967b1b7935ff14ba57dcba6

  • SSDEEP

    768:3scaIyIB+ntOwEuZge5WTjQKZKfgm3Eh5s:cc1X+Oe5WTkF7Ers

Malware Config

Extracted

Family

mercurialgrabber

C2

https://discord.com/api/webhooks/1318490592392515594/CaM0cAa4-Oi_iXHBiVS9ZB_zIfBiNf-F8okhA3-1UsMnWScS22GWWOOUK0emIKf2VNCQ

Signatures

  • Mercurial Grabber Stealer

    Mercurial Grabber is an open source stealer targeting Chrome, Discord and some game clients as well as generic system information.

  • Mercurialgrabber family
  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
  • Looks for VMWare Tools registry key 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 1 IoCs

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

  • Reads user/profile data of web browsers 3 TTPs

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

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Maps connected drives based on registry 3 TTPs 2 IoCs

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

  • Checks SCSI registry key(s) 3 TTPs 1 IoCs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Enumerates system info in registry 2 TTPs 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Nexus\Nexus Executor.exe
    "C:\Users\Admin\AppData\Local\Temp\Nexus\Nexus Executor.exe"
    1⤵
    • Looks for VirtualBox Guest Additions in registry
    • Looks for VMWare Tools registry key
    • Checks BIOS information in registry
    • Maps connected drives based on registry
    • Checks SCSI registry key(s)
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious use of AdjustPrivilegeToken
    PID:4008

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/4008-0-0x0000000000730000-0x0000000000740000-memory.dmp

    Filesize

    64KB

  • memory/4008-1-0x00007FF98C823000-0x00007FF98C825000-memory.dmp

    Filesize

    8KB

  • memory/4008-2-0x00007FF98C820000-0x00007FF98D2E1000-memory.dmp

    Filesize

    10.8MB

  • memory/4008-3-0x00007FF98C820000-0x00007FF98D2E1000-memory.dmp

    Filesize

    10.8MB

  • memory/4008-7-0x00007FF98C820000-0x00007FF98D2E1000-memory.dmp

    Filesize

    10.8MB