Overview

overview

10

Static

static

REMITTAN.exe

windows7_x64

10

REMITTAN.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    d9465ad29caa66ba9d539f9b59a4d058147bf13d284e6289fc7b6ef3b9a4bb1b

  • Size

    1.2MB

  • Sample

    220521-xb7nhaefgr

  • MD5

    7150336413ac578fda576f4e525b2c7e

  • SHA1

    f0e14ca24609764e5e77ef3cd66415bb276f6441

  • SHA256

    d9465ad29caa66ba9d539f9b59a4d058147bf13d284e6289fc7b6ef3b9a4bb1b

  • SHA512

    7f93f5737151984da5353d8c0a19d0d3772e2aaf7981e990a907b081cdaf30dd2db6010d24d7343a3cb4e9e733ae0b49f35de88bcb940ca2e4db8904f78a73ec

Score
10/10
guloaderdownloaderguloaderpersistence

Malware Config

Extracted

Family

guloader

C2

https://twadatabase.com/uj/newsamcav_HgMSY69.bin

xor.base64

Targets

    • Target

      REMITTAN.EXE

    • Size

      104KB

    • MD5

      a5227202babf335d14eec4a0a497f62c

    • SHA1

      b1ccb23abcaf2271167b9e7534e40512d8a36723

    • SHA256

      e761de2471fe1811d6a545231c1aa3d6b8065f0157af871808d2443c8c61dd09

    • SHA512

      b46ed3cbc786d997153be17ed7e1df5f08ed5525a09d7b824ff94dd4cca20c98ce7d015fb09ff2bca18bfeff81c3502fb4d6ba18714e5cc76b34e05cc98a16c1

    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

2
T1112

Install Root Certificate

1
T1130

Credential Access

Discovery

Query Registry

1
T1012

Virtualization/Sandbox Evasion

1
T1497

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks