Overview

overview

10

Static

static

Trojan-Ran...b0.exe

windows7-x64

10

Trojan-Ran...b0.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    144s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/09/2022, 12:38

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General

  • Target
    Trojan-Ransom.Win32.Chimera.l-ffb4a81fc336b1d77c81eef96eab0a5249ebb053c8920dd0c02e1d9f3ac257b0.exe
  • Size 384KB
  • Sample220929-pt342aaha2
  • SHA256 ffb4a81fc336b1d77c81eef96eab0a5249ebb053c8920dd0c02e1d9f3ac257b0
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
chimeraransomwarespywarestealer

Malware Config

Signatures

  • Chimera 64 IoCs

    Ransomware which infects local and network files, often distributed via Dropbox links.

    ransomwarechimera
  • Chimera Ransomware Loader DLL 1 IoCs

    Drops/unpacks executable file which resembles Chimera's Loader.dll.

    ransomware
  • Modifies extensions of user files 2 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • Drops desktop.ini file(s) 27 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in Program Files directory 64 IoCs
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
    adwarespyware
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Trojan-Ransom.Win32.Chimera.l-ffb4a81fc336b1d77c81eef96eab0a5249ebb053c8920dd0c02e1d9f3ac257b0.exe
    "C:\Users\Admin\AppData\Local\Temp\Trojan-Ransom.Win32.Chimera.l-ffb4a81fc336b1d77c81eef96eab0a5249ebb053c8920dd0c02e1d9f3ac257b0.exe"
    1⤵
    • Chimera
    • Modifies extensions of user files
    • Drops desktop.ini file(s)
    • Drops file in Program Files directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2772
    • C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe" -k "C:\Users\Admin\Music\YOUR_FILES_ARE_ENCRYPTED.HTML"
      2⤵
      • Modifies Internet Explorer settings
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3804
      • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3804 CREDAT:17410 /prefetch:2
        3⤵
        • Modifies Internet Explorer settings
        • Suspicious use of SetWindowsHookEx
        PID:1060

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
        • Size 471B
        • SHA256 abbd85d1c316255702f6a692c549a64ede98dc77b2db39c562ffcd34002345b7
        • MD5 SHA1 SHA512
        Submit Download

        7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
        • Size 404B
        • SHA256 572f2e6a60628ade7f4623a7bd3af463a81a8cd340f544e1a5a3343d270fc172
        • MD5 SHA1 SHA512
        Submit Download

        YOUR_FILES_ARE_ENCRYPTED.HTML
        • Path C:\Users\Admin\Favorites\Links\YOUR_FILES_ARE_ENCRYPTED.HTML
        • Size 4KB
        • SHA256 7ffba266ca23e38d108c1b2f3e31daaf528a719fa61a9426fec70f31bd52a7a1
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        YOUR_FILES_ARE_ENCRYPTED.HTML
        • Path C:\Users\Admin\Favorites\YOUR_FILES_ARE_ENCRYPTED.HTML
        • Size 4KB
        • SHA256 7ffba266ca23e38d108c1b2f3e31daaf528a719fa61a9426fec70f31bd52a7a1
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        YOUR_FILES_ARE_ENCRYPTED.HTML
        • Path C:\Users\Admin\Music\YOUR_FILES_ARE_ENCRYPTED.HTML
        • Size 4KB
        • SHA256 7ffba266ca23e38d108c1b2f3e31daaf528a719fa61a9426fec70f31bd52a7a1
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        memory/2772-132-0x00000000745F0000-0x0000000074BA1000-memory.dmp
        Download

        memory/2772-133-0x0000000010000000-0x0000000010010000-memory.dmp
        Download

        memory/2772-137-0x0000000000AF5000-0x0000000000B0C000-memory.dmp
        Download

        memory/2772-138-0x0000000004D80000-0x0000000004D9A000-memory.dmp
        Download

        memory/2772-139-0x00000000745F0000-0x0000000074BA1000-memory.dmp
        Download

        memory/2772-141-0x0000000004D80000-0x0000000004D9A000-memory.dmp
        Download

        memory/2772-140-0x0000000000AF5000-0x0000000000B0C000-memory.dmp
        Download