Analysis

  • max time kernel
    155s
  • max time network
    159s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08-02-2024 06:30

General

  • Target

    3250391200054 - EU14303 COTTERLEY Thé Noir Darjeeling.exe

  • Size

    1.2MB

  • MD5

    bdde3f2fca8eb09969b1dc90579a71e1

  • SHA1

    0b259b48afbf21c5ea9c9ef52c16d15a0e52728f

  • SHA256

    3b2c6392ce2ade6f3a5fd949df763736a273dd8daea8057869d692cb8242f066

  • SHA512

    c6604ce727b9c84ede591c46c7831cdcf1f5df9ec70f45a9e9767901e972ec78e61a553468cd7f92bfbbd25709f4f34d946550df1709291235f8514c43abb1cf

  • SSDEEP

    24576:9SOPcJoogMZ97gucAImvxrHeQywSoP663593VrS74Z/dT:XWoogMj9ImvnPSc/9FXZ1T

Malware Config

Extracted

Family

remcos

Botnet

Top

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

    true

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    mqerms.dat

  • keylog_flag

    false

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    alpwovnb-G3F5OR

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • Remcos

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

  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Suspicious use of NtCreateThreadExHideFromDebugger 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3250391200054 - EU14303 COTTERLEY Thé Noir Darjeeling.exe
    "C:\Users\Admin\AppData\Local\Temp\3250391200054 - EU14303 COTTERLEY Thé Noir Darjeeling.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Drops file in Windows directory
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:3716
    • C:\Program Files (x86)\windows mail\wab.exe
      "C:\Users\Admin\AppData\Local\Temp\3250391200054 - EU14303 COTTERLEY Thé Noir Darjeeling.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious use of NtCreateThreadExHideFromDebugger
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious use of SetWindowsHookEx
      PID:4464

Network

MITRE ATT&CK Matrix ATT&CK v13

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

1
T1112

Discovery

System Information Discovery

1
T1082

Command and Control

Web Service

1
T1102

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\nspC602.tmp\System.dll
    Filesize

    11KB

    MD5

    17ed1c86bd67e78ade4712be48a7d2bd

    SHA1

    1cc9fe86d6d6030b4dae45ecddce5907991c01a0

    SHA256

    bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb

    SHA512

    0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5

  • memory/3716-20-0x0000000004BE0000-0x0000000007EC8000-memory.dmp
    Filesize

    50.9MB

  • memory/3716-21-0x0000000004BE0000-0x0000000007EC8000-memory.dmp
    Filesize

    50.9MB

  • memory/3716-22-0x0000000077A31000-0x0000000077B51000-memory.dmp
    Filesize

    1.1MB

  • memory/3716-23-0x0000000010000000-0x0000000010006000-memory.dmp
    Filesize

    24KB

  • memory/4464-24-0x0000000002000000-0x00000000052E8000-memory.dmp
    Filesize

    50.9MB

  • memory/4464-25-0x0000000077AB8000-0x0000000077AB9000-memory.dmp
    Filesize

    4KB

  • memory/4464-26-0x0000000077A31000-0x0000000077B51000-memory.dmp
    Filesize

    1.1MB

  • memory/4464-28-0x0000000002000000-0x00000000052E8000-memory.dmp
    Filesize

    50.9MB

  • memory/4464-41-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-42-0x0000000077A31000-0x0000000077B51000-memory.dmp
    Filesize

    1.1MB

  • memory/4464-44-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-43-0x0000000002000000-0x00000000052E8000-memory.dmp
    Filesize

    50.9MB

  • memory/4464-45-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-46-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-47-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-48-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-49-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-50-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-51-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-52-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-53-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-54-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-55-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-56-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-57-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-58-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-59-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-60-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-63-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-64-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-65-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-66-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-67-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-68-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-69-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-70-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-71-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-72-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-73-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-74-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-75-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-76-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-77-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-78-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-79-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-80-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-81-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-82-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-83-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-84-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-85-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-86-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-87-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-88-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-89-0x0000000077A31000-0x0000000077B51000-memory.dmp
    Filesize

    1.1MB

  • memory/4464-90-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-91-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-92-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-93-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-94-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-95-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-96-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-97-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-98-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-99-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB

  • memory/4464-100-0x0000000000DA0000-0x0000000001FF4000-memory.dmp
    Filesize

    18.3MB