Overview

overview

10

Static

static

Drawings 8...df.exe

windows7_x64

10

Drawings 8...df.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    157s
  • max time network
    163s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 01:14

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General

  • Target

    Drawings 86565278254-CP20202705,pdf.exe

  • Size

    314KB

  • MD5

    4ee009b6aa38a721c2d0b3820e0a1a18

  • SHA1

    24dd9a3896a3af768b31f3224584e50757013536

  • SHA256

    45b6db1de3c17ed66daa45bd11b1b2b1001a0060fab695635f1cec62400f007d

  • SHA512

    4f750b0cd349ab46b9618f8a3145b6b44e75f11c11f8a3f72b8626d531beb834f6726ab1a14157790c06c2fc24015baf4f46e1bcb17870edffde4010869bcfda

Score
10/10
remcosfrom jahrat

Malware Config

Extracted

Family

remcos

Version

2.5.0 Pro

Botnet

FROM JAH

C2

newdawn4me.ddns.net:7213

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

    false

  • install_flag

    false

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Remcos-4F6INU

  • 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
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Uses the VBS compiler for execution 1 TTPs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistence
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Drawings 86565278254-CP20202705,pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\Drawings 86565278254-CP20202705,pdf.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4284
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QuEmCwmtBIbeLr" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8BE4.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2116
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
      "{path}"
      2⤵
        PID:1916

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Execution

    Scripting

    1
    T1064

    Scheduled Task

    1
    T1053

    Persistence

    Scheduled Task

    1
    T1053

    Privilege Escalation

    Scheduled Task

    1
    T1053

    Defense Evasion

    Scripting

    1
    T1064

    Credential Access

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    2
    T1082

    Lateral Movement

    Collection

    Exfiltration

    Command and Control

    Impact

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmp8BE4.tmp
      Filesize

      1KB

      MD5

      c8e00efef0cdbf2f3e57c70cc5ed9051

      SHA1

      e1c9fed3a899ac80951af5e0678296a725ffb6e5

      SHA256

      202bf6b70cdbb79db977c6de175f14269ba52b1fe6a5145168c21b747bc9085c

      SHA512

      b47818999ab248f5cbe87dfcbe62fc2d28251c558a1c622decb1450cfe24db2c59cb7d5302ea75cf46b5bebbed79aa4aa42662acf1c6ee23c3cd72ebe6f559d3

      Download Submit
    • memory/1916-137-0x0000000000000000-mapping.dmp
      Download
    • memory/1916-138-0x0000000000400000-0x0000000000420000-memory.dmp
      Filesize

      128KB

      Download
    • memory/1916-140-0x0000000000400000-0x0000000000420000-memory.dmp
      Filesize

      128KB

      Download
    • memory/1916-141-0x0000000000400000-0x0000000000420000-memory.dmp
      Filesize

      128KB

      Download
    • memory/2116-135-0x0000000000000000-mapping.dmp
      Download
    • memory/4284-130-0x0000000000210000-0x0000000000264000-memory.dmp
      Filesize

      336KB

      Download
    • memory/4284-131-0x00000000075C0000-0x0000000007B64000-memory.dmp
      Filesize

      5.6MB

      Download
    • memory/4284-132-0x00000000070F0000-0x0000000007182000-memory.dmp
      Filesize

      584KB

      Download
    • memory/4284-133-0x0000000007190000-0x000000000719A000-memory.dmp
      Filesize

      40KB

      Download
    • memory/4284-134-0x000000000AAA0000-0x000000000AB3C000-memory.dmp
      Filesize

      624KB

      Download