Overview

overview

10

Static

static

10

explorer.exe

windows10-1703-x64

10

Sharing

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General

  • Target

    tt.zip

  • Size

    33KB

  • Sample

    240320-qzv62sae6x

  • MD5

    1eebc0a7c6b8dd9a24a9494fbf98614c

  • SHA1

    28a75117f034b137f8729a59442148f41bd75503

  • SHA256

    eea63589b21f1cf4e89727a02d496b0e9de91b39df40190c88e2d6352615fcb7

  • SHA512

    fc3a2c306d143dc5282565292fdcfab7dc84d653832e835c2f21ba59ac16a0ff2f0dc42760bebf06b26456e8c9fdae4761d375eedcbd0cbd88ed00d30c8d7738

  • SSDEEP

    768:5MXHXv+Xy2rr2VHKSxmfq3ntb4RDzlsT4b1JjJgeLBgxLLkqMo:56H2Xy2rrYHKSxKOtMJltLlo9LL

Score
10/10
remcoshostevasionpersistenceratupx

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

10.0.2.15:2402

Attributes
  • audio_folder

    audio

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    5

  • copy_file

    U32c.exe

  • copy_folder

    MicrosoftCryptographie

  • delete_file

    true

  • hide_file

    true

  • hide_keylog_file

    false

  • install_flag

    true

  • install_path

    %UserProfile%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    true

  • mutex

    remcos_idwxrxyimd

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screens

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    Windows Defender

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      explorer.exe

    • Size

      36KB

    • MD5

      722f70f7c2d8ce48d62723390d7a1898

    • SHA1

      a57fd2bee605c399cf92f21b051479049c4868fb

    • SHA256

      a6f04a175ecb36c0813e7a8d7504709bc3fd633e05622f2f7bab422d096b2077

    • SHA512

      9fa61013ee3f5ae00c96c6d89026fb84122fd0eb4b349582b8d8b911fbd894d4ab44d3221ec26f327eb33dcdb839e443971ef7ec677819c4d879d6d2a48c45d6

    • SSDEEP

      768:55PHyCjmhFdWfLubuZ1kvIaEekM26Jr1:55PHfjGPAKbLVPJr

    Score
    10/10
    remcoshostevasionpersistenceratupx

    • Remcos

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

      ratremcos

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

      evasion

    • Executes dropped EXE

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

      upx

    • Adds Run key to start application

      persistence

    • Suspicious use of SetThreadContext

    behavioral1

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

1
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

1
T1082

Remote System Discovery

1
T1018

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks