Analysis

  • max time kernel
    120s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    28-12-2023 13:29

General

  • Target

    unban_exe.exe

  • Size

    42KB

  • MD5

    0a26d7666170599b369dd2a4e6aeec10

  • SHA1

    3927d1d0e679f045465984ffe8cfbcc40b38a850

  • SHA256

    e50f994aff44a0dabca8ec7fa9de976d53d31daa4b702430f6325250695283d0

  • SHA512

    8a1b6e09c33d3346ed4f0e6c95e153d1dfc63d5b928cd6f5e5993f3b1467f7b2f77601793e80b2ab9b8b8cae5505794fccc92c7a55b343f3abc10e70f676b6cb

  • SSDEEP

    768:k+IrdxCGgrtQ7YB5uZaLnyTjtKZKfgm3Ehtn:2xor1B9LnyTpF7Evn

Malware Config

Extracted

Family

mercurialgrabber

C2

https://discord.com/api/webhooks/1053421109455884418/PpwDnLsbX_p99old1K-Q8P0cgEU1tq4j4yfXfhwS_8u68MpXLmpjMPRANw5lrUqGFYzT

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 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
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\unban_exe.exe
    "C:\Users\Admin\AppData\Local\Temp\unban_exe.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
    • Suspicious use of WriteProcessMemory
    PID:2244
    • C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 2244 -s 1296
      2⤵
        PID:2812

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/2244-0-0x0000000001070000-0x0000000001080000-memory.dmp

      Filesize

      64KB

    • memory/2244-1-0x000007FEF5430000-0x000007FEF5E1C000-memory.dmp

      Filesize

      9.9MB

    • memory/2244-2-0x0000000000490000-0x0000000000510000-memory.dmp

      Filesize

      512KB

    • memory/2244-3-0x000007FEF5430000-0x000007FEF5E1C000-memory.dmp

      Filesize

      9.9MB

    • memory/2244-4-0x0000000000490000-0x0000000000510000-memory.dmp

      Filesize

      512KB