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Resubmissions

17/03/2025, 00:44

250317-a3jz7avtcz 10

06/03/2025, 15:21

250306-sre6za1xgz 10

Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250217-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/03/2025, 15:21

General

  • Target

    Sigma.exe

  • Size

    41KB

  • MD5

    9aff73f27f7afc4251dfe1ac8fe52d7d

  • SHA1

    deef8ffa68978c9c8b398e5f7c4c026faf63fa5d

  • SHA256

    546b7e985765d0a21e915869dad863133255bb081e8de5407f7104cd5bdcb77b

  • SHA512

    ee2f3c18744b749dc68003f7e81c800c288060c9e56f74e61c706b3c61c17198b42401da49e524e4e77ae8a5f5847adf387034f12898a9fdeabddfc465b7a3a9

  • SSDEEP

    768:yscaIiIEI/gB1wtduZ0e6WTj8KZKfgm3Eh3/:hc1yYgBEe6WToF7EJ/

Malware Config

Extracted

Family

mercurialgrabber

C2

https://discord.com/api/webhooks/1347218786394050560/25E1MnN6tM_9Plb5-he1mualyMBpKwbwpRNDgFeexEvlMFJngDEgVT6C2DE0Vpotbp-Y

Signatures

  • Mercurial Grabber Stealer

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

  • Mercurialgrabber family
  • Reads user/profile data of web browsers 3 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.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Sigma.exe
    "C:\Users\Admin\AppData\Local\Temp\Sigma.exe"
    1⤵
    • Checks processor information in registry
    • Suspicious use of AdjustPrivilegeToken
    PID:3720

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/3720-0-0x0000000000AE0000-0x0000000000AF0000-memory.dmp

    Filesize

    64KB

  • memory/3720-1-0x00007FFAB9490000-0x00007FFAB9685000-memory.dmp

    Filesize

    2.0MB

  • memory/3720-2-0x00007FFAB9490000-0x00007FFAB9685000-memory.dmp

    Filesize

    2.0MB

  • memory/3720-3-0x00007FFAB9490000-0x00007FFAB9685000-memory.dmp

    Filesize

    2.0MB

  • memory/3720-7-0x000000001C6B0000-0x000000001C81A000-memory.dmp

    Filesize

    1.4MB

  • memory/3720-8-0x00007FFAB9490000-0x00007FFAB9685000-memory.dmp

    Filesize

    2.0MB