Analysis

  • max time kernel
    121s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    31-08-2024 00:13

General

  • Target

    mercurialll.exe

  • Size

    42KB

  • MD5

    c5b0524db04000a869b5d72c8d853055

  • SHA1

    e49365c097c38c0c76ab45b7fcc9816c562d93ea

  • SHA256

    42b41379ffd81e77b83fdd6fbef9b3867206e6a2a1b81bb5543fddcf4b60d1c3

  • SHA512

    296ba85d8da2bf72da3394004278e738024118de78c0b9177cf45987d6d4348900d4405f7e6829b434be78d0e19d0128fe55fde7a0352e3f459090857f557186

  • SSDEEP

    768:TUOmPE4lMmkpb9mpKuZPL9HqTjUKZKfgm3EhPB:7AibIpbL9HqTgF7EVB

Malware Config

Extracted

Family

mercurialgrabber

C2

https://discord.com/api/webhooks/1279217204323156153/PfnFxjSTBGvOFUR_eBCUTW-98gwm5YlZ7kySbZHvpfCiTR6h5wK9dsiLKp3e86ugBnX0

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 3 IoCs
  • 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\mercurialll.exe
    "C:\Users\Admin\AppData\Local\Temp\mercurialll.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:2548
    • C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 2548 -s 1400
      2⤵
        PID:2764

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/2548-0-0x000007FEF5D43000-0x000007FEF5D44000-memory.dmp

      Filesize

      4KB

    • memory/2548-1-0x0000000000170000-0x0000000000180000-memory.dmp

      Filesize

      64KB

    • memory/2548-2-0x000007FEF5D40000-0x000007FEF672C000-memory.dmp

      Filesize

      9.9MB

    • memory/2548-3-0x000007FEF5D43000-0x000007FEF5D44000-memory.dmp

      Filesize

      4KB

    • memory/2548-4-0x000007FEF5D40000-0x000007FEF672C000-memory.dmp

      Filesize

      9.9MB

    • memory/2548-5-0x000007FEF5D40000-0x000007FEF672C000-memory.dmp

      Filesize

      9.9MB