Overview

overview

10

Static

static

25131_Paym...on.exe

windows7_x64

10

25131_Paym...on.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    b36007e8275a822141b6dabf8cfba95a3833e5cd1cc4d8be6b61ad5ba32f065a

  • Size

    504KB

  • Sample

    220521-xcts2aegbr

  • MD5

    b5bb2f95993a05e4fb8fb3aaa2a6b8d4

  • SHA1

    233c1529d7093eec5517a79eed37d66500bb813e

  • SHA256

    b36007e8275a822141b6dabf8cfba95a3833e5cd1cc4d8be6b61ad5ba32f065a

  • SHA512

    4772ef2e533f8d4988851206881d56bea91671f1e5b10225ae9175d5c52257821ed8eb4a0fa9f364aa30be6800d463d3f2a8e28c0baf43bd3fa3986f2577237e

Score
10/10
guloaderdownloaderguloaderpersistence

Malware Config

Extracted

Family

guloader

C2

https://www.bodyhealthbrasil.com/bc/mayomo_RGwvy106.bin

xor.base64

Targets

    • Target

      25131_Payment_Confirmation.exe

    • Size

      444KB

    • MD5

      96c31f972f7dff2632aeb270268c2011

    • SHA1

      20ba389bdd0cf117c64b20e8486f1158959654bc

    • SHA256

      fbae0ff635e7b7cb7646fded915f70803f4c564348b77bf2c6d9809c4353e9a6

    • SHA512

      70bb0a1ecc107302fe99047d5012de43cf66dec7011726bf03056eae25f5b2589cdeaca06bc1b7aa20ba9aa442bba20c5db1a61068025e80c38c73b0f6e679fd

    Score
    10/10
    guloaderdownloaderguloaderpersistence

    • Guloader,Cloudeye

      A shellcode based downloader first seen in 2020.

      downloaderguloader

    • Guloader Payload

      guloader

    • Checks QEMU agent state file

      Checks state file used by QEMU agent, possibly to detect virtualization.

    • Adds Run key to start application

      persistence

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

1
T1012

Virtualization/Sandbox Evasion

1
T1497

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks