Analysis

  • max time kernel
    126s
  • max time network
    128s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/09/2024, 03:39

General

  • Target
    fdbab159997e6af6bf0776c48e62c51d_JaffaCakes118.exe
  • Size 726KB
  • Sample240929-d76ars1epd
  • SHA256 892ac1aad60783b04a388d8cc154f605d9b7b8e3f3f1a7d207072f58f5389c42
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • matiex

Credentials

Signatures

  • Matiex

    Matiex is a keylogger and infostealer first seen in July 2020.

  • Matiex Main payload 1 IoCs
  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 3 TTPs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 3 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.

  • Suspicious use of SetThreadContext 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fdbab159997e6af6bf0776c48e62c51d_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\fdbab159997e6af6bf0776c48e62c51d_JaffaCakes118.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:4328
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:4976
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4152,i,3387628439405076340,17957358341235678872,262144 --variations-seed-version --mojo-platform-channel-handle=4180 /prefetch:8
    1⤵
      PID:2324

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          memory/4328-8-0x0000000074500000-0x0000000074CB0000-memory.dmp

          memory/4328-7-0x0000000074500000-0x0000000074CB0000-memory.dmp

          memory/4328-2-0x0000000004C20000-0x0000000004CB2000-memory.dmp

          memory/4328-3-0x0000000074500000-0x0000000074CB0000-memory.dmp

          memory/4328-4-0x00000000050A0000-0x0000000005118000-memory.dmp

          memory/4328-0-0x000000007450E000-0x000000007450F000-memory.dmp

          memory/4328-1-0x0000000000370000-0x000000000042C000-memory.dmp

          memory/4976-10-0x0000000005B90000-0x0000000006134000-memory.dmp

          memory/4976-5-0x0000000000400000-0x0000000000472000-memory.dmp

          memory/4976-9-0x0000000074500000-0x0000000074CB0000-memory.dmp

          memory/4976-11-0x0000000005530000-0x00000000055CC000-memory.dmp

          memory/4976-12-0x00000000055E0000-0x0000000005646000-memory.dmp

          memory/4976-13-0x0000000074500000-0x0000000074CB0000-memory.dmp

          memory/4976-14-0x0000000074500000-0x0000000074CB0000-memory.dmp

          memory/4976-15-0x0000000006C30000-0x0000000006DF2000-memory.dmp

          memory/4976-16-0x0000000006AD0000-0x0000000006ADA000-memory.dmp