Analysis

  • max time kernel
    117s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    12-09-2024 19:56

General

  • Target

    tiny-task178.exe

  • Size

    42KB

  • MD5

    8cbfca16ee57178222868b719d04f4ce

  • SHA1

    fad271d382c8056fec09648704d6249ccc70d9fb

  • SHA256

    7040302e55fad5d19059a7b8207f82971713bb7de5b6c51aff4446a6eaecd747

  • SHA512

    c39a3c226cb189c7b55851af68ebffd7be599f485e20051fa51adb9c51c2a3f366b04550c8cc29319288b7e0a431bdca8ee97b61634137ea00de1fc1f8ca9caa

  • SSDEEP

    768:qZwdIVfLvnDylOcWuZiOLAITj0KZKfgm3EhVy:qRjnD9cBLAIT4F7EXy

Malware Config

Extracted

Family

mercurialgrabber

C2

https://discord.com/api/webhooks/975161328303996958/nrgZY9A49sdU8V_8PpOlzLB-oRyu4-MwqVj4zRvoP7kBjo77ZdI40IG00OvegQV-Gtof

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\tiny-task178.exe
    "C:\Users\Admin\AppData\Local\Temp\tiny-task178.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:2076
    • C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 2076 -s 1400
      2⤵
        PID:2952

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/2076-0-0x000007FEF4C83000-0x000007FEF4C84000-memory.dmp

      Filesize

      4KB

    • memory/2076-1-0x0000000000C40000-0x0000000000C50000-memory.dmp

      Filesize

      64KB

    • memory/2076-2-0x000007FEF4C80000-0x000007FEF566C000-memory.dmp

      Filesize

      9.9MB

    • memory/2076-3-0x000007FEF4C83000-0x000007FEF4C84000-memory.dmp

      Filesize

      4KB

    • memory/2076-4-0x000007FEF4C80000-0x000007FEF566C000-memory.dmp

      Filesize

      9.9MB