General

  • Target

    orderXinquiry.doc

  • Size

    13KB

  • Sample

    230606-ss15tseh2w

  • MD5

    814c549027ffa7b070b8dcbdf94c3124

  • SHA1

    3bc00c380c958fb225da0224ad8a90df6af8d265

  • SHA256

    9ec972333e8ee5a045f432e0d9829a85b10361f717c57482c322d7077e237b3d

  • SHA512

    5a6fca5913c814862b0c40f16ebdedb44fe3b5839b0a631168015878c5cdfa761f6f1f76ec2afd193ea93224f94466ca8020c5cf8ef295a31afcf112d143386c

  • SSDEEP

    384:NoO098d/Ejd0fyJXPTzkiQZ4/NpPFNkYsoY+qfdMV1l:tBd/ER0fytPTQi3//FPD/mWb

Malware Config

Extracted

Family

remcos

Botnet

success1

C2

103.212.81.154:1940

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-M38C46

  • 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

      orderXinquiry.doc

    • Size

      13KB

    • MD5

      814c549027ffa7b070b8dcbdf94c3124

    • SHA1

      3bc00c380c958fb225da0224ad8a90df6af8d265

    • SHA256

      9ec972333e8ee5a045f432e0d9829a85b10361f717c57482c322d7077e237b3d

    • SHA512

      5a6fca5913c814862b0c40f16ebdedb44fe3b5839b0a631168015878c5cdfa761f6f1f76ec2afd193ea93224f94466ca8020c5cf8ef295a31afcf112d143386c

    • SSDEEP

      384:NoO098d/Ejd0fyJXPTzkiQZ4/NpPFNkYsoY+qfdMV1l:tBd/ER0fytPTQi3//FPD/mWb

    • 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

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Accesses Microsoft Outlook accounts

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Execution

Exploitation for Client Execution

1
T1203

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

1
T1081

Discovery

System Information Discovery

3
T1082

Query Registry

2
T1012

Collection

Data from Local System

1
T1005

Email Collection

1
T1114

Tasks