Analysis

  • max time kernel
    16s
  • max time network
    18s
  • platform
    windows10-1703_x64
  • resource
    win10-20230220-en
  • resource tags

    arch:x64arch:x86image:win10-20230220-enlocale:en-usos:windows10-1703-x64system
  • submitted
    22-05-2023 23:23

General

  • Target

    stub.exe

  • Size

    42KB

  • MD5

    815c1245bc05bdad3189cc6a65396207

  • SHA1

    778663a46b269dc305f2e577f433ffc3b45909bd

  • SHA256

    e1790e7dd80127ecb73f0a540f2ad8b4479bb97a0ecb7be807a67bc06fda94f2

  • SHA512

    bedd64ebe0162fd55b74044ed4325997cf453ec0f502099337773dd0d2a4347f13ded825b7b812ba7441b6d092d2ff1a51517b2bb07882279b929c548b42e1ed

  • SSDEEP

    384:sciKoRD0L2GI1Q/VNWJ2ge5So9eTYuWs/XZxIh/doJEFq5nmqoTAsCIKQsLd/Sfp:1LT+oge5b0guZ5LnoTjZKZKfgm3Eheb

Malware Config

Extracted

Family

mercurialgrabber

C2

https://discord.com/api/webhooks/1016435887099351190/NopdbVD5frXDLoZP3uBJeO3ESYrxVuhaIRyPJa5-BQ2gbFKRBe__Z233lKve_2jaiaDB

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 4 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

Processes

  • C:\Users\Admin\AppData\Local\Temp\stub.exe
    "C:\Users\Admin\AppData\Local\Temp\stub.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
    PID:3712

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/3712-116-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/3712-117-0x000000001AE10000-0x000000001AE20000-memory.dmp

    Filesize

    64KB

  • memory/3712-118-0x000000001AE10000-0x000000001AE20000-memory.dmp

    Filesize

    64KB