Analysis

  • max time kernel
    118s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    24/12/2023, 01:23

General

  • Target
    2bdec488e251d59626a3c0464e101929.exe
  • Size 42KB
  • Sample231224-br8pvaehe8
  • SHA256 15719fa156469648d2ea7b62a166d442e9e3ca29bcb22f541f13e04d5582dc89
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • mercurialgrabber

C2
  • https://discord.com/api/webhooks/945387105146773544/HAPkyzqIoO7ttCOeGRCU1R9YCmdnF3zPb1ughGqmDeXcjnkJI7TEKWuZ5FgEpy3Ddb55

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 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.

  • Enumerates system info in registry 2 TTPs 4 IoCs
  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2bdec488e251d59626a3c0464e101929.exe
    "C:\Users\Admin\AppData\Local\Temp\2bdec488e251d59626a3c0464e101929.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)
    • Enumerates system info in registry
    • Modifies system certificate store
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2208
    • C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 2208 -s 1716
      2⤵
        PID:2880

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          94308059B57B3142E455B38A6EB92015

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
          • Size 344B
          • SHA256 20f2f110f4dcef24104034c0f7ba164439cf57a5f84e2730c39c0576aab8b8e1
          • MD5 SHA1 SHA512

          Cab6C1D.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\Cab6C1D.tmp
          • Size 65KB
          • SHA256 c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d
          • MD5 SHA1 SHA512 SSDEEP

          Tar6CBC.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\Tar6CBC.tmp
          • Size 171KB
          • SHA256 4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f
          • MD5 SHA1 SHA512 SSDEEP

          memory/2208-0-0x0000000000130000-0x0000000000140000-memory.dmp

          memory/2208-1-0x000007FEF5AB0000-0x000007FEF649C000-memory.dmp

          memory/2208-2-0x0000000000190000-0x0000000000210000-memory.dmp

          memory/2208-67-0x000007FEF5AB0000-0x000007FEF649C000-memory.dmp

          memory/2208-68-0x0000000000190000-0x0000000000210000-memory.dmp