Overview

overview

10

Static

static

Request fo...df.exe

windows7_x64

10

Request fo...df.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    151s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    20-05-2022 22:22

Sharing

Copy URL
Twitter E-mail
Report Analysis Logs

General

  • Target

    Request for quotation and No_863972 order,pdf.exe

  • Size

    544KB

  • MD5

    e84d1f5c3a8f6c79d8516f221104191c

  • SHA1

    a8b97e5f46d406c15c0abb55accf6fe2da3dfbec

  • SHA256

    e17255079fd94918e8e003447c4698ec67af308f62fdadec71e9751d24d5d93f

  • SHA512

    eb5257c6f0e649f7418a77b6f4840fb39e6d6dcb68e53a26790bf3909e9a7af533624679dc75aac3b5e37d9d267228d04002fa358a2d46372d9219fed4e88f6a

Score
10/10
remcosseptember boyevasionrat

Malware Config

Extracted

Family

remcos

Version

2.7.0 Pro

Botnet

september boy

C2

jackyjian1965.hopto.org:5285

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-C4E1UN

  • 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
  • Looks for VirtualBox Guest Additions in registry 2 TTPs
    evasion
  • Looks for VMWare Tools registry key 2 TTPs
    evasion
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • 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
  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • 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 SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Request for quotation and No_863972 order,pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\Request for quotation and No_863972 order,pdf.exe"
    1⤵
    • Checks BIOS information in registry
    • Checks computer location settings
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4476
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\aBRulPV" /XML "C:\Users\Admin\AppData\Local\Temp\tmp366.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3656
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:4640

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

Virtualization/Sandbox Evasion

2
T1497

Scripting

1
T1064

Credential Access

Discovery

Query Registry

5
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

4
T1082

Peripheral Device Discovery

1
T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp366.tmp
    Filesize

    1KB

    MD5

    902231091d577621757c3ae40c9ae484

    SHA1

    e209ebcb560815c01988aa83476960e0ef0cdaf5

    SHA256

    1beda4802a555f3b0e397a22fe0fcdb6b9605f98b6f48b5a438011a42dd36b14

    SHA512

    61536e33098bf20139a9c0d854cfe83e6c3671cf2254962951a511ea1618759512145005c9eacbd91b2f12092bff8a4aa20907150969e95b3e43634de3ba1ad2

    Download Submit
  • memory/3656-137-0x0000000000000000-mapping.dmp
    Download
  • memory/4476-136-0x0000000005AD0000-0x0000000005B36000-memory.dmp
    Filesize

    408KB

    Download
  • memory/4476-133-0x0000000004BE0000-0x0000000004C72000-memory.dmp
    Filesize

    584KB

    Download
  • memory/4476-134-0x0000000004B80000-0x0000000004B8A000-memory.dmp
    Filesize

    40KB

    Download
  • memory/4476-135-0x0000000004DF0000-0x0000000004E46000-memory.dmp
    Filesize

    344KB

    Download
  • memory/4476-130-0x00000000000D0000-0x000000000015E000-memory.dmp
    Filesize

    568KB

    Download
  • memory/4476-132-0x00000000050F0000-0x0000000005694000-memory.dmp
    Filesize

    5.6MB

    Download
  • memory/4476-131-0x0000000004AA0000-0x0000000004B3C000-memory.dmp
    Filesize

    624KB

    Download
  • memory/4640-139-0x0000000000000000-mapping.dmp
    Download
  • memory/4640-140-0x0000000000400000-0x0000000000421000-memory.dmp
    Filesize

    132KB

    Download
  • memory/4640-142-0x0000000000400000-0x0000000000421000-memory.dmp
    Filesize

    132KB

    Download
  • memory/4640-143-0x0000000000400000-0x0000000000421000-memory.dmp
    Filesize

    132KB

    Download