Analysis

  • max time kernel
    135s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-06-2023 08:59

General

  • Target

    KRNLExecutor.exe

  • Size

    41KB

  • MD5

    d1a288a97979ddd09085cc9ad0162b62

  • SHA1

    d213f7f6f069db9c1fb72cb76ca4440541461c7c

  • SHA256

    1e0474476d1eba6ed4ea3e6c2bdc368412f60862db3ee84e096eb800a8c884bc

  • SHA512

    ff143047d8278c16c2fb139ac7318d0dd8f92f4b46f35c18c19f58e254eb1e79d259d1365ad458f656b089c66918c7bf4fe5cc7a9c826d0754ac31b249317947

  • SSDEEP

    768:nscaIiIq3KHWOJTw3quZ5e9WTjoKZKfgm3Eh41:sc1KKHHo9e9WT8F7Ee1

Malware Config

Extracted

Family

mercurialgrabber

C2

https://discord.com/api/webhooks/1118262451083939971/HmXFycDXvS2LObQqqJVwfiGcZuZwJqZAp7f-PUmUyVxXQyBedsiYC04ShgyVOokXniGF

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.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 4 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\KRNLExecutor.exe
    "C:\Users\Admin\AppData\Local\Temp\KRNLExecutor.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:3260

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/3260-133-0x0000000000800000-0x0000000000810000-memory.dmp

    Filesize

    64KB

  • memory/3260-134-0x0000000000E70000-0x0000000000E80000-memory.dmp

    Filesize

    64KB

  • memory/3260-135-0x0000000000E70000-0x0000000000E80000-memory.dmp

    Filesize

    64KB