Analysis

  • max time kernel
    206s
  • max time network
    217s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    04-02-2022 09:52

General

  • Target

    448166ffa55d2d5fbf0cfaefb21826f6.exe

  • Size

    118.6MB

  • MD5

    448166ffa55d2d5fbf0cfaefb21826f6

  • SHA1

    e946af3ab6614f0b20515a3fa8b5a73210e8932d

  • SHA256

    a69ac6cbe1ce50215d3f6df173f38bb3f9de174d32c87afbb7146662214b570b

  • SHA512

    d9147720d3e691091c8a376776429eee992ab7a1b656109b091892483200b71606242dff085ca705807f081703ac7d182150f631a657c6a2d568b67b9bb32d55

Malware Config

Extracted

Family

remcos

Version

3.3.2 Pro

Botnet

Sys32

C2

157.90.1.54:4783

Attributes
  • audio_folder

    MicRecords

  • audio_path

    %AppData%

  • 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

    true

  • install_flag

    false

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    Logs

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Sys-PVUZ63

  • 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

  • take_screenshot_title

    notepad;solitaire;

Signatures

  • Babadeda

    Babadeda is a crypter delivered as a legitimate installer and used to drop other malware families.

  • Babadeda Crypter 2 IoCs
  • Remcos

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

  • Executes dropped EXE 3 IoCs
  • Drops startup file 1 IoCs
  • Loads dropped DLL 25 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\448166ffa55d2d5fbf0cfaefb21826f6.exe
    "C:\Users\Admin\AppData\Local\Temp\448166ffa55d2d5fbf0cfaefb21826f6.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:976
    • C:\Users\Admin\AppData\Local\Temp\is-TIGD9.tmp\448166ffa55d2d5fbf0cfaefb21826f6.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-TIGD9.tmp\448166ffa55d2d5fbf0cfaefb21826f6.tmp" /SL5="$5014A,123570416,887296,C:\Users\Admin\AppData\Local\Temp\448166ffa55d2d5fbf0cfaefb21826f6.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:1192
      • C:\Users\Admin\AppData\Roaming\MiPony Installer\makecat.exe
        "C:\Users\Admin\AppData\Roaming\MiPony Installer\makecat.exe"
        3⤵
        • Executes dropped EXE
        PID:268
      • C:\Users\Admin\AppData\Roaming\MiPony Installer\link.exe
        "C:\Users\Admin\AppData\Roaming\MiPony Installer\link.exe"
        3⤵
        • Executes dropped EXE
        • Drops startup file
        • Loads dropped DLL
        • Adds Run key to start application
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of SetWindowsHookEx
        PID:304

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/304-109-0x0000000000D40000-0x0000000000DB7000-memory.dmp

    Filesize

    476KB

  • memory/304-115-0x0000000004F50000-0x0000000008F50000-memory.dmp

    Filesize

    64.0MB

  • memory/976-56-0x0000000000400000-0x00000000004E6000-memory.dmp

    Filesize

    920KB

  • memory/976-55-0x0000000074B21000-0x0000000074B23000-memory.dmp

    Filesize

    8KB

  • memory/1192-63-0x00000000740F1000-0x00000000740F3000-memory.dmp

    Filesize

    8KB

  • memory/1192-61-0x0000000000240000-0x0000000000241000-memory.dmp

    Filesize

    4KB