Overview

overview

10

Static

static

1

9e1c9678aa...17c.js

windows7-x64

3

9e1c9678aa...17c.js

windows10-2004-x64

10

Sharing

Copy URL
Twitter E-mail

General

  • Target

    9e1c9678aa1a203879ea5e93fd18f2831f6168ebf2d1f62680091bc21fc4217c.js

  • Size

    1KB

  • Sample

    240606-re8gbaga84

  • MD5

    e2e9bf7a7dcfe1d55a43229add47520b

  • SHA1

    f668de5e1e1090b831a6e8d8f08a9107234ab77f

  • SHA256

    9e1c9678aa1a203879ea5e93fd18f2831f6168ebf2d1f62680091bc21fc4217c

  • SHA512

    97eee0d2c2c71e53418323511599dc4a94f82633dff83b153a271eaa24b918a6c53544b20f51d3de4b2c5a4f0b442eb1edbb2706c9591463c1982f44e580deec

Score
10/10
koiloaderexecutionloader

Malware Config

Extracted

Family

koiloader

C2

http://81.19.141.115/marasmus.php

Attributes
  • payload_url

    https://www.dsestimation.com/wp-content/uploads/2015/10

Targets

    • Target

      9e1c9678aa1a203879ea5e93fd18f2831f6168ebf2d1f62680091bc21fc4217c.js

    • Size

      1KB

    • MD5

      e2e9bf7a7dcfe1d55a43229add47520b

    • SHA1

      f668de5e1e1090b831a6e8d8f08a9107234ab77f

    • SHA256

      9e1c9678aa1a203879ea5e93fd18f2831f6168ebf2d1f62680091bc21fc4217c

    • SHA512

      97eee0d2c2c71e53418323511599dc4a94f82633dff83b153a271eaa24b918a6c53544b20f51d3de4b2c5a4f0b442eb1edbb2706c9591463c1982f44e580deec

    Score
    10/10
    executionkoiloaderloader

    • KoiLoader

      KoiLoader is a malware loader written in C++.

      loaderkoiloader

    • Detects KoiLoader payload

      loader

    • Blocklisted process makes network request

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Command and Scripting Interpreter

2
T1059

PowerShell

1
T1059.001

JavaScript

1
T1059.007

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks