Overview

overview

10

Static

static

1

INVOICE.exe

windows7-x64

10

INVOICE.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    9713464660.zip

  • Size

    291KB

  • Sample

    230327-pz4bzsdd98

  • MD5

    dcdfb142995b6250df3632830d1b15e8

  • SHA1

    de08ba21800443aa24147e9069cc1234c5f0ff43

  • SHA256

    6f40097d34750d8d94cb3131e4c6643d47ea6541997ae4f18e01ef14189a988c

  • SHA512

    a2e4712efc6513cad91b8a993bbf8250ca2b633a6b2889c9fde1565293cab3b4ed7f5873971196d7905f73b2ff1aa52abca223aa4fdd15e2862fe72893e7fe3d

  • SSDEEP

    6144:/jtnW/+MilC/TjLVHfIuRh3pd9rWypFzYOfErZ7pqAibCcZIUzMtx0NB5WT:7tniikR/IuRR39JpFzMgPFZcx0NPw

Score
10/10
guloaderremcosremotehostdownloaderpersistencerat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

darren2023.sytes.net:2115

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    scs.exe

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    true

  • install_path

    %AppData%

  • keylog_crypt

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Rmc-3YNKQ0

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    Remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      INVOICE.exe

    • Size

      294KB

    • MD5

      f5da0115ae4a3eb7b325a8756b1013f7

    • SHA1

      7832e5c3f52a4227e49b77968b2e316a4f575363

    • SHA256

      198c4b09ed4b8a46cfca9fd672797c0bb6f6d9a84016fd4f699ec65be9b9de3d

    • SHA512

      7389875afb1896958043c451bf1b0f354a8052041baa595f6765ca33a35eed693d3df88eaca55ac537039aca7380a2a17dbf4829b39b7ee406012416d8a50f4b

    • SSDEEP

      6144:GT4DtMmNNsXLWs9baMwEyGnTaaZOMnUivg5FLJTQhli0xk74/S:GT9XLWszTa9Mdvg5FxQXi0xx/S

    Score
    10/10
    guloaderremcosremotehostdownloaderpersistencerat

    • Guloader,Cloudeye

      A shellcode based downloader first seen in 2020.

      downloaderguloader

    • Remcos

      Remcos is a closed-source remote control and surveillance software.

      ratremcos

    • Checks QEMU agent file

      Checks presence of QEMU agent, possibly to detect virtualization.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Legitimate hosting services abused for malware hosting/C2

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • 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

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

2
T1012

System Information Discovery

3
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1
T1102

Impact

Tasks