Overview

overview

10

Static

static

b5cb5e1203...7b.exe

windows7-x64

10

b5cb5e1203...7b.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    b5cb5e1203743569f525e297a5fd1a7b.exe

  • Size

    1.1MB

  • Sample

    221022-larp4scae4

  • MD5

    b5cb5e1203743569f525e297a5fd1a7b

  • SHA1

    33f65a3b6bb816823866a286848fac808f64c1a0

  • SHA256

    43cb616356d0ad88a91a7beef82159db1e2345df33e0ad8cf4ce80a7cf1c277c

  • SHA512

    b6f5adef6d7c78fa1b3faf6cae0510b994a27a9ad8bdedac553bb15397f99e12b55a3d9299fa8c73884c3c35b7c0e44d1c4e93123d6a3591c87db27817596e4b

  • SSDEEP

    24576:Fj9kqnXJoyWyjv5IsSpW4X8riQIVLiT2Ea+ylAROJ3+PpLnSlF:FCMXJoZ85h8X8GQQLM2LfSW34nkF

Score
10/10
remcosxppersistencerat

Malware Config

Extracted

Family

remcos

Botnet

XP

C2

xpremcuz300622.ddns.net:3542

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    oos.exe

  • delete_file

    false

  • hide_file

    true

  • hide_keylog_file

    false

  • install_flag

    true

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Remcos-MMP2I7

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    kkl

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      b5cb5e1203743569f525e297a5fd1a7b.exe

    • Size

      1.1MB

    • MD5

      b5cb5e1203743569f525e297a5fd1a7b

    • SHA1

      33f65a3b6bb816823866a286848fac808f64c1a0

    • SHA256

      43cb616356d0ad88a91a7beef82159db1e2345df33e0ad8cf4ce80a7cf1c277c

    • SHA512

      b6f5adef6d7c78fa1b3faf6cae0510b994a27a9ad8bdedac553bb15397f99e12b55a3d9299fa8c73884c3c35b7c0e44d1c4e93123d6a3591c87db27817596e4b

    • SSDEEP

      24576:Fj9kqnXJoyWyjv5IsSpW4X8riQIVLiT2Ea+ylAROJ3+PpLnSlF:FCMXJoZ85h8X8GQQLM2LfSW34nkF

    Score
    10/10
    remcosxppersistencerat

    • Remcos

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

      ratremcos

    • Executes dropped EXE

    • Checks computer location settings

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

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • 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

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks