Analysis

  • max time kernel
    42s
  • max time network
    36s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/03/2024, 22:58

General

  • Target
    Vava.exe
  • Size 150KB
  • Sample240301-2ybxkafa45
  • SHA256 5f44905a2442d86dbe938baaa2cefd8445c738de90d23aba88c96d6c70e44ff5
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • mercurialgrabber

C2
  • https://discordapp.com/api/webhooks/1213242605098373131/4R-4mXjbOVMLvLmFSnjMJbUOcMbVag0mo6EdtTZ2hNo3JbV84rkOtFAa7-vatYJTKWRU

Signatures

  • Mercurial Grabber Stealer

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

  • 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 2 TTPs

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

  • Looks up external IP address via web service 3 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.

  • Enumerates system info in registry 2 TTPs 4 IoCs
  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Vava.exe
    "C:\Users\Admin\AppData\Local\Temp\Vava.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)
    • Enumerates system info in registry
    • Modifies system certificate store
    • Suspicious use of AdjustPrivilegeToken
    PID:4700

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/4700-0-0x0000000000F10000-0x0000000000F3A000-memory.dmp

        memory/4700-1-0x00007FF9FB120000-0x00007FF9FBBE1000-memory.dmp

        memory/4700-2-0x000000001BB00000-0x000000001BB10000-memory.dmp

        memory/4700-6-0x00007FF9FB120000-0x00007FF9FBBE1000-memory.dmp

        memory/4700-7-0x000000001BB00000-0x000000001BB10000-memory.dmp