Analysis

  • max time kernel
    27s
  • max time network
    31s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    26-02-2023 01:42

General

  • Target

    paint.net.5.0.2.install.anycpu.web.exe

  • Size

    1.1MB

  • MD5

    6a5e8c6eec9ab6ed7088bc35739e52d5

  • SHA1

    be77e05970628d62c65b0bd609ef7ab5bb705c8f

  • SHA256

    9d3edf7ade8ce94aaa6038e894562229e002a86840835e573caf1116e7b928a5

  • SHA512

    e56e5356bee8d6d942f1bee7acd0a31fa03f51a7614df6f7bcdec89ec26cc3e7ea686892325938e7156f23c78814e0a9f04eeff255853939b157004ed6c12ed0

  • SSDEEP

    24576:7rYYYYkWYCzwLhA29pQCo7jIC0BuDgwf0z:7rYYYYkvLhA29piUDjwe

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\paint.net.5.0.2.install.anycpu.web.exe
    "C:\Users\Admin\AppData\Local\Temp\paint.net.5.0.2.install.anycpu.web.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1760
    • C:\Users\Admin\AppData\Local\Temp\7zS0E6DEA1C\SetupShim.exe
      "C:\Users\Admin\AppData\Local\Temp\7zS0E6DEA1C\SetupShim.exe" /suppressReboot
      2⤵
      • Executes dropped EXE
      PID:768

Network

MITRE ATT&CK Matrix ATT&CK v6

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\7zS0E6DEA1C\SetupShim.exe
    Filesize

    136KB

    MD5

    db51c903838632898319669eb2271114

    SHA1

    25fa7935e834e56f7757321da7f84aad8d587eee

    SHA256

    babcd035c2f920004fcc922aa23c4fc55949b335b5e920bcec215a51c1e036d4

    SHA512

    a42fd32040317d351f98bf53e0832e1c9dfd7e1b45c5aba44dfbc79f25f88cc19dcb762410840cfa5cd63e8531496dfe25d63937af8758d712d06102e626fdbb

  • C:\Users\Admin\AppData\Local\Temp\7zS0E6DEA1C\SetupShim.exe
    Filesize

    136KB

    MD5

    db51c903838632898319669eb2271114

    SHA1

    25fa7935e834e56f7757321da7f84aad8d587eee

    SHA256

    babcd035c2f920004fcc922aa23c4fc55949b335b5e920bcec215a51c1e036d4

    SHA512

    a42fd32040317d351f98bf53e0832e1c9dfd7e1b45c5aba44dfbc79f25f88cc19dcb762410840cfa5cd63e8531496dfe25d63937af8758d712d06102e626fdbb

  • \Users\Admin\AppData\Local\Temp\7zS0E6DEA1C\SetupShim.exe
    Filesize

    136KB

    MD5

    db51c903838632898319669eb2271114

    SHA1

    25fa7935e834e56f7757321da7f84aad8d587eee

    SHA256

    babcd035c2f920004fcc922aa23c4fc55949b335b5e920bcec215a51c1e036d4

    SHA512

    a42fd32040317d351f98bf53e0832e1c9dfd7e1b45c5aba44dfbc79f25f88cc19dcb762410840cfa5cd63e8531496dfe25d63937af8758d712d06102e626fdbb

  • \Users\Admin\AppData\Local\Temp\7zS0E6DEA1C\SetupShim.exe
    Filesize

    136KB

    MD5

    db51c903838632898319669eb2271114

    SHA1

    25fa7935e834e56f7757321da7f84aad8d587eee

    SHA256

    babcd035c2f920004fcc922aa23c4fc55949b335b5e920bcec215a51c1e036d4

    SHA512

    a42fd32040317d351f98bf53e0832e1c9dfd7e1b45c5aba44dfbc79f25f88cc19dcb762410840cfa5cd63e8531496dfe25d63937af8758d712d06102e626fdbb

  • \Users\Admin\AppData\Local\Temp\7zS0E6DEA1C\SetupShim.exe
    Filesize

    136KB

    MD5

    db51c903838632898319669eb2271114

    SHA1

    25fa7935e834e56f7757321da7f84aad8d587eee

    SHA256

    babcd035c2f920004fcc922aa23c4fc55949b335b5e920bcec215a51c1e036d4

    SHA512

    a42fd32040317d351f98bf53e0832e1c9dfd7e1b45c5aba44dfbc79f25f88cc19dcb762410840cfa5cd63e8531496dfe25d63937af8758d712d06102e626fdbb

  • \Users\Admin\AppData\Local\Temp\7zS0E6DEA1C\SetupShim.exe
    Filesize

    136KB

    MD5

    db51c903838632898319669eb2271114

    SHA1

    25fa7935e834e56f7757321da7f84aad8d587eee

    SHA256

    babcd035c2f920004fcc922aa23c4fc55949b335b5e920bcec215a51c1e036d4

    SHA512

    a42fd32040317d351f98bf53e0832e1c9dfd7e1b45c5aba44dfbc79f25f88cc19dcb762410840cfa5cd63e8531496dfe25d63937af8758d712d06102e626fdbb