Overview

overview

10

Static

static

c82d1d8b8f...76.exe

windows7_x64

1

c82d1d8b8f...76.exe

windows10_x64

10

Sharing

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General

  • Target

    c82d1d8b8fc5cbbf8ee05bee229a3a76.exe

  • Size

    438KB

  • Sample

    210419-a7xg11zm96

  • MD5

    c82d1d8b8fc5cbbf8ee05bee229a3a76

  • SHA1

    eeaba79a2d490544ccf4c75f93e6456ab474f800

  • SHA256

    f8abb401812eafff1ca24fbafc67d5cdb34ba384da284b55d5350a5300fb7757

  • SHA512

    01bd7148e3befa03dd6e548c2c0784849f730165b43dec14f18262b1ee0e592b0e4132f0acf01f9b4d9d46074f0c2b26b5e626cd54d39f88113d10bd684387dc

Score
10/10
guloaderdownloaderevasionguloaderpersistence

Malware Config

Targets

    • Target

      c82d1d8b8fc5cbbf8ee05bee229a3a76.exe

    • Size

      438KB

    • MD5

      c82d1d8b8fc5cbbf8ee05bee229a3a76

    • SHA1

      eeaba79a2d490544ccf4c75f93e6456ab474f800

    • SHA256

      f8abb401812eafff1ca24fbafc67d5cdb34ba384da284b55d5350a5300fb7757

    • SHA512

      01bd7148e3befa03dd6e548c2c0784849f730165b43dec14f18262b1ee0e592b0e4132f0acf01f9b4d9d46074f0c2b26b5e626cd54d39f88113d10bd684387dc

    Score
    10/10
    guloaderdownloaderevasionguloaderpersistence

    • Guloader,Cloudeye

      A shellcode based downloader first seen in 2020.

      downloaderguloader

    • Modifies WinLogon for persistence

      persistence

    • Modifies visiblity of hidden/system files in Explorer

      evasion

    • Guloader Payload

      guloader

    • Executes dropped EXE

    • Modifies Installed Components in the registry

      persistence

    • Adds Run key to start application

      persistence
    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1
T1004

Hidden Files and Directories

1
T1158

Registry Run Keys / Startup Folder

2
T1060

Privilege Escalation

Defense Evasion

Modify Registry

4
T1112

Hidden Files and Directories

1
T1158

Credential Access

Discovery

System Information Discovery

1
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks