Analysis

  • max time kernel
    51s
  • max time network
    72s
  • platform
    windows10_x64
  • resource
    win10-20220414-en
  • submitted
    14-07-2022 23:53

General

  • Target

    winrar600.exe

  • Size

    2.9MB

  • MD5

    c74862e16bcc2b0e02cadb7ab14e3cd6

  • SHA1

    6569aa87d28db836d7d3380b32a83654f3e909cf

  • SHA256

    aff4bb9b15bccff67a112a7857d28d3f2f436e2e42f11be14930fe496269d573

  • SHA512

    d28fbfd2b75789d85f402190b25bc7649bcde742495465ac22ffc3bc583d5e27aa2975d781d3a7d51b26149236ebcce8a94ec1d615e83a568d68c57bb8b10fa7

Score
10/10

Malware Config

Signatures

  • Modifies system executable filetype association 2 TTPs 8 IoCs
  • Executes dropped EXE 1 IoCs
  • Registers COM server for autorun 1 TTPs 3 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops file in Program Files directory 42 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Modifies registry class 64 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\winrar600.exe
    "C:\Users\Admin\AppData\Local\Temp\winrar600.exe"
    1⤵
    • Drops file in Program Files directory
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3036
    • C:\Program Files (x86)\WinRAR\uninstall.exe
      "C:\Program Files (x86)\WinRAR\uninstall.exe" /setup
      2⤵
      • Modifies system executable filetype association
      • Executes dropped EXE
      • Registers COM server for autorun
      • Drops file in Program Files directory
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:304

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Program Files (x86)\WinRAR\Rar.txt

    Filesize

    105KB

    MD5

    a2cebfd18b8b97fc0b18db95d9364ca1

    SHA1

    7d4fdd5d33b1098df5ec3471d8934b5d30c5da73

    SHA256

    f3ccf2f7a7981a09b5ad75302d33cad253394fcc344edc8fdb59c2e66d405930

    SHA512

    1f426c3863f207b24c02067361188e2630bf553d9840bc170d3633af313852a47421e43f25d87d460c366668eb7c6f60523b2b087a1a9d710d07d0a2627abd72

  • C:\Program Files (x86)\WinRAR\Uninstall.exe

    Filesize

    366KB

    MD5

    54ebba23af8ea3562c143b6f9a2e0bc1

    SHA1

    3dbca72735ce91059e22c41b6527a1fd74c08425

    SHA256

    a434ef5347fa047e6eb21e0c00e689bdc88f3c715281c9c2afb0ec1a46578586

    SHA512

    2662f189cb4b8a95d5356e89add685c606c4bbd60f189ed975e9f5c1148c7051d025741743e74eec8e67d61f36f87ff2faac417a1847a71b02cd2fc5fb7d68ef

  • C:\Program Files (x86)\WinRAR\WhatsNew.txt

    Filesize

    82KB

    MD5

    f9b2c17e898b62cbcdfc641282eaeddf

    SHA1

    7870d39eb4955bb7c5f0dd25f52846aa120831aa

    SHA256

    4f78d917ef8238238495168bd780bea42063ac6097dfe4322544eee65cbb67d8

    SHA512

    0306c0cec9c8233d694784b1512adcb936aa5c499af695adfa68efc48c39f2a2c02e9f5637e02541e13d6bb73c48400c8ca9c79affd66e8be24e1a692b81ae33

  • C:\Program Files (x86)\WinRAR\WinRAR.chm

    Filesize

    313KB

    MD5

    2cf1541d0f89c9b0f4c77d1c276abb2b

    SHA1

    bc4dced7f3fcc4aa3b804ebb27c55a5eba57dc96

    SHA256

    48f7da1a43e24e564cc8c93ce967434b5e0bb2ff6cb705b62381fde827bf3f81

    SHA512

    a7a8093f7762ed5a928020d598490b2fa2f9fc2db61d77ab91f015ee2c112f591826e620c22510980108101dfcf86d5bfb08f54d15a9a16c3c0659d8bc66fa36

  • C:\Program Files (x86)\WinRAR\WinRAR.exe

    Filesize

    2.4MB

    MD5

    fd7b28f197668c62d7ab2eb77ad2750d

    SHA1

    d9c0ec348cf944c7f239e92e1bdb66caaf711895

    SHA256

    1317d70682bd11e5d320af850d6ecbb5a70c200d626ec7bf69c47566894db515

    SHA512

    49017ed6caa0ccd00834bca3cd96ef42fc9923e2b6232841680d44e3cb6907dc5cc3c3a8c2aaff8239230755c5dab43a9f9003347cb274d7ff5f0ed06c0c8e61

  • C:\Program Files (x86)\WinRAR\uninstall.exe

    Filesize

    366KB

    MD5

    54ebba23af8ea3562c143b6f9a2e0bc1

    SHA1

    3dbca72735ce91059e22c41b6527a1fd74c08425

    SHA256

    a434ef5347fa047e6eb21e0c00e689bdc88f3c715281c9c2afb0ec1a46578586

    SHA512

    2662f189cb4b8a95d5356e89add685c606c4bbd60f189ed975e9f5c1148c7051d025741743e74eec8e67d61f36f87ff2faac417a1847a71b02cd2fc5fb7d68ef

  • memory/3036-150-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-181-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-124-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-125-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-127-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-128-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-129-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-130-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-132-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-131-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-158-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-134-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-135-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-136-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-137-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-138-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-140-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-139-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-141-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-142-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-143-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-144-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-145-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-146-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-147-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-148-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-149-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-121-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-151-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-152-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-183-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-122-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-133-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-159-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-161-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-162-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-160-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-164-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-163-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-157-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-165-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-156-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-155-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-166-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-167-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-168-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-170-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-171-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-172-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-169-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-173-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-174-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-176-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-177-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-178-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-175-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-179-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-120-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-119-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-154-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-184-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-153-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-182-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB

  • memory/3036-180-0x0000000077020000-0x00000000771AE000-memory.dmp

    Filesize

    1.6MB