Analysis

  • max time kernel
    154s
  • max time network
    164s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/12/2023, 04:54

General

  • Target
    6a36615061e2320a5f8351a09e63355e.exe
  • Size 3.0MB
  • Sample231222-fjrtkshce2
  • SHA256 d123ab9c133d277975f53b3256a36bb0de0420ed640d58ef870bbe8fbb2f5c05
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • mercurialgrabber

C2
  • https://discord.com/api/webhooks/881502707700105217/B6aKQajpJtqb5ssOTXvBCeC3LWkHHur-i9fCbEepLakdzqKmOimtcbyJhd08eg0K4zZt

Signatures

  • Mercurial Grabber Stealer

    Mercurial Grabber is an open source stealer targeting Chrome, Discord and some game clients as well as generic system information.

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • 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 2 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.

  • Themida packer 3 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • 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 NtSetInformationThreadHideFromDebugger 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.

  • 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
  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6a36615061e2320a5f8351a09e63355e.exe
    "C:\Users\Admin\AppData\Local\Temp\6a36615061e2320a5f8351a09e63355e.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Looks for VirtualBox Guest Additions in registry
    • Looks for VMWare Tools registry key
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Maps connected drives based on registry
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Checks SCSI registry key(s)
    • Checks processor information in registry
    • Enumerates system info in registry
    • Modifies system certificate store
    • Suspicious use of AdjustPrivilegeToken
    PID:2980
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2980 -s 2648
      2⤵
      • Program crash
      PID:3076
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 2980 -ip 2980
    1⤵
      PID:4052

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          memory/2980-0-0x0000000000CC0000-0x00000000014D8000-memory.dmp

          memory/2980-2-0x0000000075AE0000-0x0000000075BD0000-memory.dmp

          memory/2980-4-0x0000000075AE0000-0x0000000075BD0000-memory.dmp

          memory/2980-5-0x0000000075AE0000-0x0000000075BD0000-memory.dmp

          memory/2980-7-0x0000000075AE0000-0x0000000075BD0000-memory.dmp

          memory/2980-6-0x0000000075AE0000-0x0000000075BD0000-memory.dmp

          memory/2980-3-0x0000000075AE0000-0x0000000075BD0000-memory.dmp

          memory/2980-1-0x0000000075AE0000-0x0000000075BD0000-memory.dmp

          memory/2980-8-0x0000000077934000-0x0000000077936000-memory.dmp

          memory/2980-11-0x0000000000CC0000-0x00000000014D8000-memory.dmp

          memory/2980-12-0x0000000000CC0000-0x00000000014D8000-memory.dmp

          memory/2980-15-0x0000000006DB0000-0x0000000006E16000-memory.dmp

          memory/2980-21-0x0000000075AE0000-0x0000000075BD0000-memory.dmp

          memory/2980-22-0x0000000000CC0000-0x00000000014D8000-memory.dmp