Overview

overview

10

Static

static

1

f2fa65752c...b37.js

windows7-x64

3

f2fa65752c...b37.js

windows10-2004-x64

10

Sharing

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General

  • Target

    f2fa65752c20d58faf3a9546ef3a1792565a075e9e64b65a7921875c1300fb37.unknown

  • Size

    1KB

  • Sample

    240612-c1yfxaygpq

  • MD5

    b8b73de27d87836914a258507b8066cc

  • SHA1

    bb10873bfb35fb2d7ffb2942bba35d65068f6f70

  • SHA256

    f2fa65752c20d58faf3a9546ef3a1792565a075e9e64b65a7921875c1300fb37

  • SHA512

    085fdbe93fb90614701bd5361933e47e3a2992e9d2fe6379b5e1c60e51628ee05b988ca8fac171d0b11f1485efb21b995f0262097e18708a6b062256d6a66c0b

Score
10/10
koiloaderexecutionloader

Malware Config

Extracted

Family

koiloader

C2

http://89.251.22.227/guacos.php

Attributes
  • payload_url

    https://lechiavetteusb.it/imgs/usb/logo

Targets

    • Target

      f2fa65752c20d58faf3a9546ef3a1792565a075e9e64b65a7921875c1300fb37.unknown

    • Size

      1KB

    • MD5

      b8b73de27d87836914a258507b8066cc

    • SHA1

      bb10873bfb35fb2d7ffb2942bba35d65068f6f70

    • SHA256

      f2fa65752c20d58faf3a9546ef3a1792565a075e9e64b65a7921875c1300fb37

    • SHA512

      085fdbe93fb90614701bd5361933e47e3a2992e9d2fe6379b5e1c60e51628ee05b988ca8fac171d0b11f1485efb21b995f0262097e18708a6b062256d6a66c0b

    Score
    10/10
    executionkoiloaderloader

    • KoiLoader

      KoiLoader is a malware loader written in C++.

      loaderkoiloader

    • Detects KoiLoader payload

      loader

    • Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)

    • 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