Overview

overview

10

Static

static

1

SIGN_O0305...df.vbs

windows7-x64

10

SIGN_O0305...df.vbs

windows10-2004-x64

8

Sharing

Copy URL
Twitter E-mail

General

  • Target

    SIGN_O0305538279_pdf.zip

  • Size

    332KB

  • Sample

    240412-cwajaafg2v

  • MD5

    41ce071356f16846742bf93e004be202

  • SHA1

    723e7a6087653fdb6405c43ab233ae53070d41a2

  • SHA256

    eb1183f6f4fa252c4f3b66ae4424bc7785eaf3089ba89dafc86e5a8393ff6c01

  • SHA512

    7be22157fbfe0a9bdb321f64aeccf014ca17b2c521e7763bcac373df7701c765c6d4ba91dffaffe24bf1021b2ae8769d43395f4179580f1196e835707d339d4b

  • SSDEEP

    6144:wmnARJy5JBaK5o0eZ9VtzBi0PJZ7IbFUe7LAB/Oujh5DUUck3LO49hlSwHRq:JAw5o0Y7zXPIc/7jhFJck3hSN

Score
10/10
guloaderremcosremotehostdownloaderpersistencerat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

a458386d9.duckdns.org:3256

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

    true

  • hide_keylog_file

    false

  • install_flag

    true

  • keylog_crypt

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-KQ00DZ

  • 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

      SIGN_O0305538279·pdf.vbs

    • Size

      674KB

    • MD5

      ee18a12f0c79b4ac228025b83ec43938

    • SHA1

      f29ad3e06b23e7aacca219fd747fde72f9d5162a

    • SHA256

      22a2cfbda9c7a790c6d1c3771c5a93cabc30abacb83670c73f3844fc49b23416

    • SHA512

      cbeecf8447415a4050f9e79304287d8eab0000f7a2a4afee5b4c350ef76dae228d4fcf7dc2ba0563ba2723a8596c6b08c11bca77b95dde0b14270ab0bb0baea6

    • SSDEEP

      12288:3c/6T75JYBpvoalqV9PjpfgtQY+yveJ0Psg/:3c65uBpD0bPjpfZMeyz

    Score
    10/10
    guloaderremcosremotehostdownloaderpersistencerat

    • Guloader,Cloudeye

      A shellcode based downloader first seen in 2020.

      downloaderguloader

    • Remcos

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

      ratremcos

    • Blocklisted process makes network request

    • Checks computer location settings

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

    • Adds Run key to start application

      persistence

    • Legitimate hosting services abused for malware hosting/C2

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

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

Modify Registry

2
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1
T1102

Impact

Resource Development

Reconnaissance

Tasks