Overview

overview

10

Static

static

5

8a77c26e75...bN.exe

windows7-x64

7

8a77c26e75...bN.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    120s
  • max time network
    119s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18-09-2024 14:31

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General

  • Target

    8a77c26e754f12fe4dbe1c2e6b9c15d402df83f5474600f0c25430b7b1ccd92bN.exe

  • Size

    1.3MB

  • MD5

    7d30af44bb560517782027d6fe376c30

  • SHA1

    199e02d5f91ba60c4b60d3a9e48809c2458243f2

  • SHA256

    8a77c26e754f12fe4dbe1c2e6b9c15d402df83f5474600f0c25430b7b1ccd92b

  • SHA512

    8e2ca25b0066f5bc0b3b613593d96a17a405dc6ca4910c305e3ba007f1033aa3b393eb1b0c25acf8c5a799972b05664a792b107d5cfe86f6ec5bdecf4b71fc21

  • SSDEEP

    24576:lAHnh+eWsN3skA4RV1Hom2KXFmIadbBV7SOe50:Uh+ZkldoPK1XadtV+X0

Score
10/10
remcosriadiscoveryratupx

Malware Config

Extracted

Family

remcos

Version

2.4.5 Pro

Botnet

RIA

C2

2ffahbg8eydhr96hx3x2lje2ymygt5iq.duckdns.org:4431

Attributes
  • audio_folder

    MicRecords

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    3

  • copy_file

    remcos.exe

  • copy_folder

    remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remhost

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Remkqdjqsdguhsqgdfjqguhjfgcujqsdfgujhqsgdufh,sqhjdgdhjqsgdhjqghgsdhsqjgdj545d4564d64d64dqs4dq645q4s-57XAU6

  • 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

    wikipedia;solitaire;

Signatures

  • Remcos

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

    ratremcos
  • Drops startup file 1 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

    upx
  • Suspicious use of SetThreadContext 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8a77c26e754f12fe4dbe1c2e6b9c15d402df83f5474600f0c25430b7b1ccd92bN.exe
    "C:\Users\Admin\AppData\Local\Temp\8a77c26e754f12fe4dbe1c2e6b9c15d402df83f5474600f0c25430b7b1ccd92bN.exe"
    1⤵
    • Drops startup file
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:3056
    • C:\Users\Admin\AppData\Local\Temp\8a77c26e754f12fe4dbe1c2e6b9c15d402df83f5474600f0c25430b7b1ccd92bN.exe
      "C:\Users\Admin\AppData\Local\Temp\8a77c26e754f12fe4dbe1c2e6b9c15d402df83f5474600f0c25430b7b1ccd92bN.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:804

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\remhost\logs.dat
    Filesize

    79B

    MD5

    b4a5abf582a66f85ee92490aa94e648c

    SHA1

    f6dc9c95bb5538ac2256ea4e801178016378ff0d

    SHA256

    a8fb40f51f4bf79e1135a29744548f2769b301c572340e429f1b627583322a18

    SHA512

    ff7c17aaef7d58fc8e27353fe456d9deba5f41053f211231e47134424276ed73cb84a7af2a15ff8f354bad09892e14c82bff9f0f9032d0215cbffbc13721ec28

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  • memory/804-6-0x0000000000400000-0x0000000000425000-memory.dmp

    Filesize

    148KB

    Download

  • memory/804-12-0x0000000000400000-0x0000000000425000-memory.dmp

    Filesize

    148KB

    Download

  • memory/804-13-0x0000000000400000-0x0000000000425000-memory.dmp

    Filesize

    148KB

    Download

  • memory/804-14-0x0000000000400000-0x0000000000425000-memory.dmp

    Filesize

    148KB

    Download

  • memory/804-17-0x0000000000400000-0x0000000000425000-memory.dmp

    Filesize

    148KB

    Download

  • memory/3056-5-0x0000000000DC0000-0x0000000000DC1000-memory.dmp

    Filesize

    4KB

    Download

  • memory/3056-19-0x0000000000DC0000-0x0000000000DC1000-memory.dmp

    Filesize

    4KB

    Download