Overview

overview

10

Static

static

3

Trojan-Ran...ra.exe

windows7-x64

10

Trojan-Ran...ra.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    141s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-03-2024 09:05

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General

  • Target

    Trojan-Ransom.Win32.Chimera.exe

  • Size

    232KB

  • MD5

    60fabd1a2509b59831876d5e2aa71a6b

  • SHA1

    8b91f3c4f721cb04cc4974fc91056f397ae78faa

  • SHA256

    1dacdc296fd6ef6ba817b184cce9901901c47c01d849adfa4222bfabfed61838

  • SHA512

    3e842a7d47b32942adb936cae13293eddf1a6b860abcfe7422d0fb73098264cc95656b5c6d9980fad1bf8b5c277cd846c26acaba1bef441582caf34eb1e5295a

  • SSDEEP

    3072:BMhIBKH7j7DzQi7y5bvl4YAbdY9KWvwn7XHMzqEOf64CEEl64HBVdGXPKD:BMh5H7j5g54YZKXoxOuEEl64HZAi

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
  • Detects Reflective DLL injection artifacts 2 IoCs
  • Renames multiple (3255) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

    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 40 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.exe
    "C:\Users\Admin\AppData\Local\Temp\Trojan-Ransom.Win32.Chimera.exe"
    1⤵
    • Chimera
    • Drops desktop.ini file(s)
    • Drops file in Program Files directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4956
    • C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe" -k "C:\Users\Admin\Downloads\YOUR_FILES_ARE_ENCRYPTED.HTML"
      2⤵
      • Modifies Internet Explorer settings
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:5024
      • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:5024 CREDAT:17410 /prefetch:2
        3⤵
        • Modifies Internet Explorer settings
        • Suspicious use of SetWindowsHookEx
        PID:5232

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Program Files\Java\jdk-1.8\jre\lib\YOUR_FILES_ARE_ENCRYPTED.HTML
    Filesize

    4KB

    MD5

    396899e9244dc256a43b9052015fb3fb

    SHA1

    63ec83d7ca0fe740afb298419fc5481b5426eb3b

    SHA256

    5db271acc53157436060afc53c34b84c8eda9a802f77e9d1f5bc25e12681a37c

    SHA512

    ca234be1302491a6b83d3a6d584657ae270477d5f0df095273db631e756aadb6ee2cdd632d9af06a2e15bab601d628d573ddc53bfe79c0c4d18b31e6147134f7

    Download Submit

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\K4KS10IH\suggestions[1].en-US
    Filesize

    17KB

    MD5

    5a34cb996293fde2cb7a4ac89587393a

    SHA1

    3c96c993500690d1a77873cd62bc639b3a10653f

    SHA256

    c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

    SHA512

    e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

    Download Submit

  • memory/4956-0-0x0000000074F00000-0x00000000754B1000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/4956-1-0x0000000074F00000-0x00000000754B1000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/4956-2-0x00000000011C0000-0x00000000011D0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/4956-3-0x0000000010000000-0x0000000010010000-memory.dmp

    Filesize

    64KB

    Download

  • memory/4956-8-0x0000000000F80000-0x0000000001080000-memory.dmp

    Filesize

    1024KB

    Download

  • memory/4956-9-0x00000000054E0000-0x00000000054FA000-memory.dmp

    Filesize

    104KB

    Download

  • memory/4956-10-0x00000000054E0000-0x00000000054FA000-memory.dmp

    Filesize

    104KB

    Download

  • memory/4956-733-0x0000000074F00000-0x00000000754B1000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/4956-6749-0x0000000000F80000-0x0000000001080000-memory.dmp

    Filesize

    1024KB

    Download