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Overview

overview

10

Static

static

3

RFQ_0325.scr

windows7-x64

10

RFQ_0325.scr

windows10-2004-x64

10

$PLUGINSDI...em.dll

windows7-x64

3

$PLUGINSDI...em.dll

windows10-2004-x64

3

Sharing

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General

  • Target

    27032025_1632_26032025_RFQ_0325.rar

  • Size

    577KB

  • Sample

    250327-t1813svvfx

  • MD5

    0bcbf0c9038fac9b1f9c79426822d31b

  • SHA1

    15cf08c8d97f7223f140c7262843162c9d72f91f

  • SHA256

    e8647660ca71f0f83d3ae55ad5e4f141931cf2d4d8a9c527f99956cf189f0e0b

  • SHA512

    fbd66e07597d977a795503790a789c66a80de36d620e342008630ef09afe7d21c829aec1b40eb8bde85c2c2d900a094fa88dceb4916c1f12e90059e48b6d7e89

  • SSDEEP

    12288:YJXZxm5QNdbPgiS0ArgS5KIeupis10q0hYTqCfsTYXlF+KKh5O+7:YhK52dz3fHs18mOQFVwKEO+7

Score
10/10
guloaderremcosnew-hostdiscoverydownloaderrat

Malware Config

Extracted

Family

remcos

Botnet

New-Host

C2

176.65.142.81:9090

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-C2AG7V

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      RFQ_0325.scr

    • Size

      724KB

    • MD5

      a479acd2da79c2dfeabc05b5d6194fba

    • SHA1

      18e8097c57cf691e5c2719ade7d2bca4573d9d23

    • SHA256

      359ab600c1c1cb25744c5fd24b563ed2fbcd4918061e6409929db2c8e16a070c

    • SHA512

      0a2d4564e0cd54394332bba59a9fbeb24afff121c420d51e5613bd3af333418ed4ef0b2b7bfcddd992857b8ec4cad773142028cbb48eaeeb8c0e433082070023

    • SSDEEP

      12288:LR3BUI4bnFjfy75TC+WfSCgoSdYza46l0xFXc3gIwEH:V3GI4jFe7EJKT1nl0Pg73H

    Score
    10/10
    guloaderremcosnew-hostdiscoverydownloaderrat

    • Guloader family

      guloader

    • Guloader,Cloudeye

      A shellcode based downloader first seen in 2020.

      downloaderguloader

    • Remcos

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

      ratremcos

    • Remcos family

      remcos

    • Loads dropped DLL

    • Legitimate hosting services abused for malware hosting/C2

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    behavioral1behavioral2

    • Target

      $PLUGINSDIR/System.dll

    • Size

      11KB

    • MD5

      a436db0c473a087eb61ff5c53c34ba27

    • SHA1

      65ea67e424e75f5065132b539c8b2eda88aa0506

    • SHA256

      75ed40311875312617d6711baed0be29fcaee71031ca27a8d308a72b15a51e49

    • SHA512

      908f46a855480af6eacb2fb64de0e60b1e04bbb10b23992e2cf38a4cbebdcd7d3928c4c022d7ad9f7479265a8f426b93eef580afec95570e654c360d62f5e08d

    • SSDEEP

      192:aVL7iZJX76BisO7+UZEw+Rl59pV8ghsVJ39dx8T:d7NsOpZsfLMJ39e

    Score
    3/10
    discovery
    behavioral3behavioral4

MITRE ATT&CK Enterprise v15

Tasks