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Overview

overview

10

Static

static

10

Setup.exe

windows7-x64

10

Setup.exe

windows10-2004-x64

10

rkill.exe

windows7-x64

8

rkill.exe

windows10-2004-x64

8

Analysis

  • max time kernel
    94s
  • max time network
    137s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/11/2024, 06:13 UTC

Sharing

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General

  • Target

    rkill.exe

  • Size

    1.7MB

  • MD5

    6d622dcc87edc9a7b10d35372ade816b

  • SHA1

    47d98825b03c507b85dec02a2297e03ebc925f30

  • SHA256

    d4ac5b3c525a5fd94019d80ff81b552e73b19b1bd0a554b9609cdd5e1b00955a

  • SHA512

    ed06f872a7c66ffeeb8cb8f6fedca06ccabf623f9cd188c4c7105428e8d6521ef8da0bac0564e14d2da914d2846369a9c04577a8cf7fb80cb62831e5497f2a58

  • SSDEEP

    49152:KpEsgw14kZV2HXsMnmjEREseBSsxHnfXsrHYi2Yijig:0wYJYW

Score
8/10
discovery

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

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

    discovery
  • Opens file in notepad (likely ransom note) 1 IoCs
    ransomware
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

    persistence
  • Uses Volume Shadow Copy WMI provider

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\rkill.exe
    "C:\Users\Admin\AppData\Local\Temp\rkill.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5084
    • C:\Users\Admin\AppData\Local\Temp\rkill64.exe
      C:\Users\Admin\AppData\Local\Temp\rkill.exe
      2⤵
      • Drops file in Drivers directory
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1480
      • C:\Windows\System32\Notepad.exe
        Notepad.exe C:\Users\Admin\Desktop\Rkill.txt
        3⤵
        • Opens file in notepad (likely ransom note)
        PID:2984

Network

  • flag-us
    DNS
    8.8.8.8.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    8.8.8.8.in-addr.arpa
    IN PTR
    Response
    8.8.8.8.in-addr.arpa
    IN PTR
    dnsgoogle
  • flag-us
    DNS
    232.168.11.51.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    232.168.11.51.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    0.205.248.87.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    0.205.248.87.in-addr.arpa
    IN PTR
    Response
    0.205.248.87.in-addr.arpa
    IN PTR
    https-87-248-205-0lgwllnwnet
  • flag-us
    DNS
    76.32.126.40.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    76.32.126.40.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    95.221.229.192.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    95.221.229.192.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    53.210.109.20.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    53.210.109.20.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    171.39.242.20.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    171.39.242.20.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    172.214.232.199.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    172.214.232.199.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    11.227.111.52.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    11.227.111.52.in-addr.arpa
    IN PTR
    Response
No results found
  • 8.8.8.8:53
    8.8.8.8.in-addr.arpa
    dns
    66 B
     90 B
     1
    1

    DNS Request

    8.8.8.8.in-addr.arpa

  • 8.8.8.8:53
    232.168.11.51.in-addr.arpa
    dns
    72 B
     158 B
     1
    1

    DNS Request

    232.168.11.51.in-addr.arpa

  • 8.8.8.8:53
    0.205.248.87.in-addr.arpa
    dns
    71 B
     116 B
     1
    1

    DNS Request

    0.205.248.87.in-addr.arpa

  • 8.8.8.8:53
    76.32.126.40.in-addr.arpa
    dns
    71 B
     157 B
     1
    1

    DNS Request

    76.32.126.40.in-addr.arpa

  • 8.8.8.8:53
    95.221.229.192.in-addr.arpa
    dns
    73 B
     144 B
     1
    1

    DNS Request

    95.221.229.192.in-addr.arpa

  • 8.8.8.8:53
    53.210.109.20.in-addr.arpa
    dns
    72 B
     158 B
     1
    1

    DNS Request

    53.210.109.20.in-addr.arpa

  • 8.8.8.8:53
    171.39.242.20.in-addr.arpa
    dns
    72 B
     158 B
     1
    1

    DNS Request

    171.39.242.20.in-addr.arpa

  • 8.8.8.8:53
    172.214.232.199.in-addr.arpa
    dns
    74 B
     128 B
     1
    1

    DNS Request

    172.214.232.199.in-addr.arpa

  • 8.8.8.8:53
    11.227.111.52.in-addr.arpa
    dns
    72 B
     158 B
     1
    1

    DNS Request

    11.227.111.52.in-addr.arpa

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\rkill64.exe
    Filesize

    964KB

    MD5

    ae368c10327fe7a8e5c875360e529b35

    SHA1

    d69fad67631f48f2eee9109a368eb176356da531

    SHA256

    797f0917162e74e64f556fd467cc13d10401e826309c3ed889574889a96b88c7

    SHA512

    e7e6e4d29dfdc537b21fdffc6c1ac0674b55fdf6c61e5fecfbdde1fa271903db1291c50bac3263bc9f4ee7797689542f29770e0d98b8180453c39bc6058a5c67

    Download Submit

  • C:\Users\Admin\Desktop\Rkill.txt
    Filesize

    514B

    MD5

    4748e8bc20393b0eba2ec46550720d40

    SHA1

    2d2938d66d1365f918464d147ef5fc0c33051c1d

    SHA256

    ecf35b01f5e6db3d1b766d8cb67d1280c9318ea7285b233f2c5fcf6c2f298826

    SHA512

    5d0394f15efeeff0c2b60e8870f91789f3e310f354dc45137f89aa77afefe645d22ebdb5ab7f319b52c554f8f37bf4d74f19ce92d5408f341e58a253fe02492c

    Download Submit

  • C:\Users\Admin\Desktop\Rkill.txt
    Filesize

    3KB

    MD5

    8b6a29ccf063a54527d207b01be5e999

    SHA1

    6efab8a54679ea5aa75292747831b1ea06d90ea9

    SHA256

    f5173c83e6f8e2e86405a7f891ae179faa4009fd05a28815ddf6f2466845e90e

    SHA512

    255a0742eae75237659e048b3820ca3e2caed3a3bf5e4053491770b660124b0a8d962dcb5b794d766ea32ca02826a5888f42f81a8a022533835ed9cebf8fb845

    Download Submit

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