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Analysis

  • max time kernel
    149s
  • max time network
    19s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    24/01/2025, 17:23

General

  • Target

    semiacademicallyJXS4.exe

  • Size

    189KB

  • MD5

    8e3275dc3c78d64e18c249f75d1afb2c

  • SHA1

    0d801f0831802531a97728c57c939ffe9d11e9ed

  • SHA256

    f179c883bcaf8fdf8d8dfeb1e46f4be7e9af1f531c27f43a053cc2be3f39544c

  • SHA512

    9806bfadd3cdca7664306d6958f0f73984139c746ca616481c848b6770a3f4e543ba23dafc0676275c7d1937baa1e15de20e9103779ebb6ad01fb91ef120ce45

  • SSDEEP

    3072:QA+MPNsjU+g/Pu92PkWMW50y4jrv34ClUCei7LwxxlXkV3Hv7Uwxp4wMCv:XJPxktlKiekVZ7MCv

Malware Config

Extracted

Family

koiloader

C2

http://78.142.29.118/implem.php

Signatures

  • KoiLoader

    KoiLoader is a malware loader written in C++.

  • Koiloader family
  • Detects KoiLoader payload 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.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\semiacademicallyJXS4.exe
    "C:\Users\Admin\AppData\Local\Temp\semiacademicallyJXS4.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    PID:2104
  • C:\Windows\system32\taskmgr.exe
    "C:\Windows\system32\taskmgr.exe" /4
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:2240

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • memory/2104-0-0x0000000000080000-0x000000000008D000-memory.dmp

    Filesize

    52KB

  • memory/2240-4-0x0000000140000000-0x00000001405E8000-memory.dmp

    Filesize

    5.9MB

  • memory/2240-5-0x0000000140000000-0x00000001405E8000-memory.dmp

    Filesize

    5.9MB