Overview

overview

10

Static

static

KKI.exe

windows7-x64

KKI.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    KKI.exe

  • Size

    236KB

  • Sample

    220901-t7af4aade6

  • MD5

    114058c333f527780ac04745dc28a4c6

  • SHA1

    1e584f6ad626793272dc26d8534bd311bfa36aca

  • SHA256

    62a6270be542aa819e08733e9220e2c553f6562ae6b3b57c12ad6be7ec70abf3

  • SHA512

    e733f7934f988fa04f32cf468666fc2d21c2de5dc1b41211f19df6abf5e6c7c8d435d0768d6fdc57b14c2f9a2ca8d240be637f6404b06afe9ecfc7d346c24632

  • SSDEEP

    3072:3FRLmrHvTaqLbItmu+2bCIMnxqY8Brf3Ul4LMEt5E1aRMNAaEHK5N/IOkj7YB1U2:VlgvTRHyJC3nxBui4g6MNAhmOO8m7We

Score
10/10
guloaderremcosmekino augdownloaderpersistencerat

Malware Config

Extracted

Family

remcos

Botnet

Mekino Aug

C2

mekremcos23.freedynamicdns.net:2397

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    os.exe

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    true

  • install_flag

    true

  • install_path

    %AppData%

  • keylog_crypt

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • mouse_option

    false

  • mutex

    Rmc-ZCU1S6

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    ecv

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      KKI.exe

    • Size

      236KB

    • MD5

      114058c333f527780ac04745dc28a4c6

    • SHA1

      1e584f6ad626793272dc26d8534bd311bfa36aca

    • SHA256

      62a6270be542aa819e08733e9220e2c553f6562ae6b3b57c12ad6be7ec70abf3

    • SHA512

      e733f7934f988fa04f32cf468666fc2d21c2de5dc1b41211f19df6abf5e6c7c8d435d0768d6fdc57b14c2f9a2ca8d240be637f6404b06afe9ecfc7d346c24632

    • SSDEEP

      3072:3FRLmrHvTaqLbItmu+2bCIMnxqY8Brf3Ul4LMEt5E1aRMNAaEHK5N/IOkj7YB1U2:VlgvTRHyJC3nxBui4g6MNAhmOO8m7We

    Score
    10/10
    guloaderremcosmekino augdownloaderpersistencerat

    • Guloader,Cloudeye

      A shellcode based downloader first seen in 2020.

      downloaderguloader

    • Remcos

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

      ratremcos

    • Executes dropped EXE

    • 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.

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Drops file in System32 directory

    • 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

Impact

Tasks