Analysis

  • max time kernel
    20s
  • max time network
    144s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    26-12-2023 17:51

General

  • Target

    81f06f19f54142c5c5d2c7c80c3400b1.exe

  • Size

    350KB

  • MD5

    81f06f19f54142c5c5d2c7c80c3400b1

  • SHA1

    c7ffe298b230d891e7876161dbf2d4357a03c021

  • SHA256

    87307f9cbe996ef6cfd171c70af3e84d556c9eaddbda28de135333d54b42422a

  • SHA512

    fc3d8b1e208a5e15cb15eb2552b143d98ba9cf63e511f38b7e88510cc841a6b7b05a72f897c6c94eb3798195c6b16e9ddd594b70d5060463562fac17d01d1b4a

  • SSDEEP

    6144:STudqNza21GkHrULM1XeH7U45fAg7Jrg6/v7yZiIk89CIag/n:Oud8a2wLMi5fAg7Jk6/vBTYCcf

Malware Config

Extracted

Family

mercurialgrabber

C2

https://discord.com/api/webhooks/869545644371607552/-IGO5g3mRvgVkuSKC9bvJicMjIjI4K_gq8hT6faXV5i5tiuC1Lecq86SpjLrE8XlY6EL

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.

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Program crash 1 IoCs
  • 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\81f06f19f54142c5c5d2c7c80c3400b1.exe
    "C:\Users\Admin\AppData\Local\Temp\81f06f19f54142c5c5d2c7c80c3400b1.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2392
    • C:\Users\Admin\AppData\Local\Temp\81f06f19f54142c5c5d2c7c80c3400b1.exe
      C:\Users\Admin\AppData\Local\Temp\81f06f19f54142c5c5d2c7c80c3400b1.exe
      2⤵
      • 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:2992
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2992 -s 1840
        3⤵
        • Program crash
        PID:1652

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2392-0-0x0000000001290000-0x00000000012E2000-memory.dmp

    Filesize

    328KB

  • memory/2392-1-0x0000000074810000-0x0000000074EFE000-memory.dmp

    Filesize

    6.9MB

  • memory/2392-3-0x0000000000DE0000-0x0000000000E20000-memory.dmp

    Filesize

    256KB

  • memory/2392-17-0x0000000000240000-0x0000000000340000-memory.dmp

    Filesize

    1024KB

  • memory/2392-22-0x0000000074810000-0x0000000074EFE000-memory.dmp

    Filesize

    6.9MB

  • memory/2392-2-0x0000000000220000-0x000000000022A000-memory.dmp

    Filesize

    40KB

  • memory/2992-23-0x0000000074810000-0x0000000074EFE000-memory.dmp

    Filesize

    6.9MB

  • memory/2992-21-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/2992-19-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/2992-15-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/2992-24-0x0000000004E70000-0x0000000004EB0000-memory.dmp

    Filesize

    256KB

  • memory/2992-27-0x0000000074810000-0x0000000074EFE000-memory.dmp

    Filesize

    6.9MB

  • memory/2992-38-0x0000000004E70000-0x0000000004EB0000-memory.dmp

    Filesize

    256KB