Analysis

  • max time kernel
    24s
  • max time network
    33s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-08-2024 23:14

General

  • Target

    balslacke.exe

  • Size

    41KB

  • MD5

    4ed542cf60b10e710aa5adb9793b6bfd

  • SHA1

    cdf8b4fb9a09fd7a1f80378a7d017f54ea0a3e5f

  • SHA256

    91c6f2cb0bb3f42b7f29a6c0506b5f87cbdd6e26d94c10025708763ac878aeb4

  • SHA512

    e91807529f75be869683137c8a67d031eb3400672799297c11b803b087416c93851e097cea10bd49ec30cbee1d7f04cda5432b789d615c92474f11aa1a852ed4

  • SSDEEP

    768:NscaIyIqaTQSwEwuZVeeWTjeKZKfgm3EhYI:qc17HeeWTqF7EGI

Malware Config

Extracted

Family

mercurialgrabber

C2

https://discord.com/api/webhooks/1269070622605050000/Alm3LpQER4yXaeST2dPkVqDgNz6KnoHyX9oQmOPNmFK4hj3_I71Pc-4aUhn6_Vc2qx1M

Signatures

  • Mercurial Grabber Stealer

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

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • 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.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 6 IoCs
  • 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.

  • 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\balslacke.exe
    "C:\Users\Admin\AppData\Local\Temp\balslacke.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:3224
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:4628
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k LocalService -p -s fdPHost
      1⤵
        PID:2140

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/3224-1-0x00007FFCD2C73000-0x00007FFCD2C75000-memory.dmp

        Filesize

        8KB

      • memory/3224-0-0x0000000000750000-0x0000000000760000-memory.dmp

        Filesize

        64KB

      • memory/3224-2-0x00007FFCD2C70000-0x00007FFCD3731000-memory.dmp

        Filesize

        10.8MB

      • memory/3224-6-0x00007FFCD2C73000-0x00007FFCD2C75000-memory.dmp

        Filesize

        8KB

      • memory/3224-7-0x00007FFCD2C70000-0x00007FFCD3731000-memory.dmp

        Filesize

        10.8MB