Resubmissions

26-06-2024 10:20

240626-mc9jdasfmr 10

26-06-2024 10:17

240626-mbemlssepl 10

Analysis

  • max time kernel
    30s
  • max time network
    16s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-06-2024 10:17

General

  • Target

    Loader.exe

  • Size

    304KB

  • MD5

    f896c2bfec649637e85c463e3a70b2a6

  • SHA1

    04d65945a3b79ee5b48a7e7e22fd24c8198fe332

  • SHA256

    d4917f32cf3755b07badf1179d6717d4f17618cb68184f0dda48f4a4bbb45376

  • SHA512

    0fed9a755f93198e795aac73aff0e17478cd51ffb9c19f80fdfdaf53374b32e2016bf83f0415f253b6f76e736cb36fad5269021d73972749c3d3d84206c6ebe0

  • SSDEEP

    6144:bFcT6MDdbICydeBvtCikGW9mhL8PzeVAOe044E:bFK1CikGemQHOeGE

Malware Config

Extracted

Family

44caliber

C2

https://discord.com/api/webhooks/1255437795820966010/0VVoLF2QZxnBkoGw_P4ovEIbuHZLKgsoVU8zu2nEJgchI5ahmWwv98_frx1Jjvk7GNic

Signatures

  • 44Caliber

    An open source infostealer written in C#.

  • BlackGuard

    Infostealer first seen in Late 2021.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 3 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 behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Loader.exe
    "C:\Users\Admin\AppData\Local\Temp\Loader.exe"
    1⤵
    • Adds Run key to start application
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:400

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\44\Process.txt

    Filesize

    1KB

    MD5

    0f89d882a626748e8834d3ffd8321d6d

    SHA1

    161757dc4eaeb7b300c202cb5087b17cfcbb33b5

    SHA256

    91e68b7af0f207f7dc355071d0579ec7a3a05ef1ef80ad844464569674280281

    SHA512

    98f675527b9b3090d94181458829134c3ca1d07b2fd9831cf883065b2b5c6b6da1c9d5230c554b7ff947462e48a913c272f656d7bc19a50a9d123091ef6df45d

  • C:\Users\Admin\AppData\Local\44\Process.txt

    Filesize

    1KB

    MD5

    3686856a864cfd5df04e2911ed2eb56d

    SHA1

    653a8078007b856670ff41530f96c35cb3e21153

    SHA256

    0bfe2db65075c9720f3c9abbe047f63797be04d252aa57f811b307d1370be52f

    SHA512

    83b6ab8e02b12189c98d72b4555d3abd0d3bdb4ed7b2addcf973779af8ba18da2e58412de89c79690c87f82b48d40cadf39cc9272e4555d97f91341125e95ec3

  • memory/400-0-0x00000140E4C70000-0x00000140E4CC2000-memory.dmp

    Filesize

    328KB

  • memory/400-1-0x00007FFE76233000-0x00007FFE76235000-memory.dmp

    Filesize

    8KB

  • memory/400-2-0x00007FFE76230000-0x00007FFE76CF1000-memory.dmp

    Filesize

    10.8MB

  • memory/400-121-0x00007FFE76230000-0x00007FFE76CF1000-memory.dmp

    Filesize

    10.8MB