Overview

overview

10

Static

static

MT NEW STA...PDF.js

windows7-x64

10

MT NEW STA...PDF.js

windows10-2004-x64

10

Sharing

Copy URL
Twitter E-mail

General

  • Target

    MT NEW STAR V2231.PDF.js

  • Size

    854KB

  • Sample

    221129-lnktqagb57

  • MD5

    b95f5a006ab0d3005e759dac083f05bf

  • SHA1

    9d59fb8f939cb75ad7cfb5b2305becbf2f2faa3b

  • SHA256

    5ae79021c1b884a698e1e18800c12bc63fb4a0211191d13dd63a0b83bd288834

  • SHA512

    4fa570b248361ceb0439e7e6d1b8694a4a9f41da1cf7c6f9a4682f6b0350fc036410fa087396e0c067781f36ee9865b41837b2dfc31077ca085c143b71132f63

  • SSDEEP

    12288:hd7rWxNU+xsAXb04bURgKtWmez1i+xL8Z7ENZQHHNe9LEhHXxGZe6M3kRM:bsLGPtWt1GGE5

Score
10/10
remcosvjw0rmremotehostevasionpersistencerattrojanworm

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

84.21.172.33:5763

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    uac.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    true

  • hide_keylog_file

    false

  • install_flag

    true

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-AG7QM3

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    Remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      MT NEW STAR V2231.PDF.js

    • Size

      854KB

    • MD5

      b95f5a006ab0d3005e759dac083f05bf

    • SHA1

      9d59fb8f939cb75ad7cfb5b2305becbf2f2faa3b

    • SHA256

      5ae79021c1b884a698e1e18800c12bc63fb4a0211191d13dd63a0b83bd288834

    • SHA512

      4fa570b248361ceb0439e7e6d1b8694a4a9f41da1cf7c6f9a4682f6b0350fc036410fa087396e0c067781f36ee9865b41837b2dfc31077ca085c143b71132f63

    • SSDEEP

      12288:hd7rWxNU+xsAXb04bURgKtWmez1i+xL8Z7ENZQHHNe9LEhHXxGZe6M3kRM:bsLGPtWt1GGE5

    Score
    10/10
    remcosvjw0rmremotehostevasionpersistencerattrojanworm

    • Remcos

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

      ratremcos

    • UAC bypass

      evasiontrojan

    • Vjw0rm

      Vjw0rm is a remote access trojan written in JavaScript.

      trojanwormvjw0rm

    • Blocklisted process makes network request

    • Executes dropped EXE

    • Checks computer location settings

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

    • Drops startup file

    • 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

Bypass User Account Control

1
T1088

Defense Evasion

Bypass User Account Control

1
T1088

Disabling Security Tools

1
T1089

Modify Registry

3
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks