General

  • Target

    vbc.exe

  • Size

    7KB

  • Sample

    230131-ngme3sga96

  • MD5

    7d7dd8874b96e698387e8929c53b85d2

  • SHA1

    4afcddebd884a0bb9885b62d05f728ec3c1e4825

  • SHA256

    ec24a8f92b77c77c267c785d00a9bab58a37331d1b1a20986b5c9266ff745f93

  • SHA512

    fe3977420e2179981c4155044ec044eb760d7e577ac53811d2c32166a573d2373c31ff57e969d522df80f512499d8752627067932cdea13372cd7873058129dd

  • SSDEEP

    96:OUY5awuf2gTYJau5huDntYBeTt1Ji6kd/7xVRbFnU:OUiYoYmuDntY8nUHFDI

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

top.thekillforabuse1.xyz:1068

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

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-R762FE

  • 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

Extracted

Family

purecrypter

C2

https://onedrive.live.com/download?cid=A113DD34A0D77810&resid=A113DD34A0D77810%21124&authkey=AK1A3Rk0CMrac7g

Targets

    • Target

      vbc.exe

    • Size

      7KB

    • MD5

      7d7dd8874b96e698387e8929c53b85d2

    • SHA1

      4afcddebd884a0bb9885b62d05f728ec3c1e4825

    • SHA256

      ec24a8f92b77c77c267c785d00a9bab58a37331d1b1a20986b5c9266ff745f93

    • SHA512

      fe3977420e2179981c4155044ec044eb760d7e577ac53811d2c32166a573d2373c31ff57e969d522df80f512499d8752627067932cdea13372cd7873058129dd

    • SSDEEP

      96:OUY5awuf2gTYJau5huDntYBeTt1Ji6kd/7xVRbFnU:OUiYoYmuDntY8nUHFDI

    • PureCrypter

      PureCrypter is a .NET malware loader first seen in early 2021.

    • Remcos

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

    • NirSoft MailPassView

      Password recovery tool for various email clients

    • NirSoft WebBrowserPassView

      Password recovery tool for various web browsers

    • Nirsoft

    • Executes dropped EXE

    • Checks computer location settings

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

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Uses the VBS compiler for execution

    • Accesses Microsoft Outlook accounts

    • Accesses Microsoft Outlook profiles

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scripting

1
T1064

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Scripting

1
T1064

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

3
T1005

Email Collection

2
T1114

Tasks