Overview

overview

10

Static

static

1

LHER0006981753.xls

windows7-x64

10

LHER0006981753.xls

windows10-2004-x64

1

Sharing

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General

  • Target

    LHER0006981753.xls

  • Size

    243KB

  • Sample

    240524-lfjxfsce97

  • MD5

    9a3bc48238b66f452505a411d111672f

  • SHA1

    d6bd686fe55e31c0a0cc387f0fd9e508cf7963e6

  • SHA256

    23beb2cb2dcecd755000c7992a9b691b1b66f3f8b4410c8d6c9af7411f5c7fc1

  • SHA512

    68dc475eeff17b495015d2676504bad0d7b6f653733e40a7c0c692b2fb0b816a4c1a66514ef6f92e76662fb2b637acdfeee774c43536b8a67a369b5f40d14c3b

  • SSDEEP

    6144:ue4UcLe0JOqPQZR8MDdATCR3tSul0W8ETwFN3sm4Lc7qRcz0DLdvU:EUP/qPQZR8MxAm/SbW8E8N394oeuMLq

Score
10/10
remcosremotehostexecutionpersistencerat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

sembe.duckdns.org:14645

Attributes
  • audio_folder

    MicRecords

  • 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

    nots.dat

  • keylog_flag

    false

  • keylog_folder

    note

  • keylog_path

    %Temp%

  • mouse_option

    false

  • mutex

    Rmc-999Z97

  • 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

      LHER0006981753.xls

    • Size

      243KB

    • MD5

      9a3bc48238b66f452505a411d111672f

    • SHA1

      d6bd686fe55e31c0a0cc387f0fd9e508cf7963e6

    • SHA256

      23beb2cb2dcecd755000c7992a9b691b1b66f3f8b4410c8d6c9af7411f5c7fc1

    • SHA512

      68dc475eeff17b495015d2676504bad0d7b6f653733e40a7c0c692b2fb0b816a4c1a66514ef6f92e76662fb2b637acdfeee774c43536b8a67a369b5f40d14c3b

    • SSDEEP

      6144:ue4UcLe0JOqPQZR8MDdATCR3tSul0W8ETwFN3sm4Lc7qRcz0DLdvU:EUP/qPQZR8MxAm/SbW8E8N394oeuMLq

    Score
    10/10
    remcosremotehostexecutionpersistencerat

    • Remcos

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

      ratremcos

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

      execution

    • Abuses OpenXML format to download file from external location

    • Adds Run key to start application

      persistence

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

Exploitation for Client Execution

1
T1203

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

Modify Registry

2
T1112

Credential Access

Discovery

Query Registry

3
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks