Overview

overview

10

Static

static

3

a9238bb7a0...9e.exe

windows7-x64

10

a9238bb7a0...9e.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    118s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    28-05-2024 04:57

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General

  • Target

    a9238bb7a0c565768ab6478114704dce98c161e82d9f8b59b5989f7a5d1d189e.exe

  • Size

    126KB

  • MD5

    84134031ba193cf5cc6da995ce298cd2

  • SHA1

    e955ce1fa9b31084c822cc641f49a28859b82371

  • SHA256

    a9238bb7a0c565768ab6478114704dce98c161e82d9f8b59b5989f7a5d1d189e

  • SHA512

    cab52649cb176c160efccb21b8a3c3f16311ba30e25c86e1c6878a84fe4a60c9d1073f2df673c05823145fb27fb0879703bd8c8daaeac13ff310e39d3c5f3c6f

  • SSDEEP

    3072:BNEp/EAS/mhYugM7vewJ8oJno9Xxh+tuk0oFaWJxT6XyzJ53Lnhdgddz5:nEpBduutSwJ8oJn8X+turkJ/6Xy57hS1

Score
10/10
rookransomware

Malware Config

Extracted

Path

C:\Program Files (x86)\!nissenvelten!HOW_TO_RESTORE.log

Family

rook

Ransom Note
Hello! We warned you, but you even didn't replied Forced shutdown of devices can lead to the loss of all data. Do not forcibly disconnect storage volumes from hosts, don't interrupt process. Damaged information cannot be recovered. All data is properly protected against unauthorized access by steady encryption technology. We have downloaded essential data of company: - Huge amount of files, including: HR,Financial,Accounting,... - Large amounts of personal records of your employees and residents. - about 1TB (!!!) of data! In case if you refuse to cooperate with us, all essential data will be sold or published at dark marketplace. Full details and proofs will be provided in case of contacting us by following emails. [email protected] [email protected] It's just a business. We can help you to quickly recover all your files. We will explain what kind of vulnerability was used to hack your network. If you will not cooperate with us, you will never know how your network was compromised. We guarantee this will happen again. We can decrypt 2 small files (up to 1MB) for free. Send files by email. Register new email account at secure mail service like mailfence, protonmail to be sure that outgoing email not blocked by spam filter. Don't use gmail! WARNING! Don't report to police. They will suspend financial activity of company and negotiation process. �

Signatures

  • Rook

    Rook is a ransomware which copies from NightSky ransomware.

    ransomwarerook
  • Renames multiple (7076) files with added filename extension

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

    ransomware
  • Drops file in Program Files directory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a9238bb7a0c565768ab6478114704dce98c161e82d9f8b59b5989f7a5d1d189e.exe
    "C:\Users\Admin\AppData\Local\Temp\a9238bb7a0c565768ab6478114704dce98c161e82d9f8b59b5989f7a5d1d189e.exe"
    1⤵
    • Drops file in Program Files directory
    PID:2072

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

  • C:\Program Files (x86)\!nissenvelten!HOW_TO_RESTORE.log
    Filesize

    1KB

    MD5

    1ac13e1c2b35dfaf377ceb55e61e5309

    SHA1

    e53185eee04a0578483054e507d639be2635b4d7

    SHA256

    72e9a50a52585a25c5529b846cf586946694e46a912a97b526e4a7067ab1d7e6

    SHA512

    fa702569f13d82d24e78cba21397f0d53281c0a93db7a484bb974f4cb965da23dd4691c7061de6bfd54e40d5d32faa2e8b8af52968191b91f9164f5c7d459fa6

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  • memory/2072-1-0x0000000000B40000-0x0000000000B92000-memory.dmp

    Filesize

    328KB

    Download

  • memory/2072-0-0x00000000000E0000-0x00000000000F9000-memory.dmp

    Filesize

    100KB

    Download

  • memory/2072-4251-0x00000000000E0000-0x00000000000F9000-memory.dmp

    Filesize

    100KB

    Download