Analysis

  • max time kernel
    151s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-01-2023 07:20

General

  • Target

    7034c12131cc2e28fcf9235850a36b08e9983dce.exe

  • Size

    7KB

  • MD5

    1c72fb093ace75fffb093c6541ff4940

  • SHA1

    7034c12131cc2e28fcf9235850a36b08e9983dce

  • SHA256

    f00982603a693995cf32649df28ac390ce839638751f04d11517454466061785

  • SHA512

    4d713c85e2b5a818e3f5db4c7b59a820bb309c911825670b540597c9faa9d931f5648d054e19a01a48f7c97bae6dfe67b02148fb3ad58ddafdd11bb06f8a59ed

  • SSDEEP

    96:lTlsnKYgr+QLZCMqm18WQ2juY+wq+Df/8tEkajtR/zNt:lpQELZCMqmXjuZ+z8zaj7p

Malware Config

Extracted

Family

remcos

Botnet

28282

C2

194.180.49.17:28282

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

    false

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    gqhwjekrltlu-TOU33Q

  • 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

Signatures

  • Remcos

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

  • NirSoft MailPassView 1 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 2 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 4 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: MapViewOfSection 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe
    "C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4056
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4508
    • C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe
      C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:4232
      • C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe
        C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe /stext "C:\Users\Admin\AppData\Local\Temp\bvhqwzzhojxexmhajxkoqnwgtahspl"
        3⤵
          PID:3504
        • C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe
          C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe /stext "C:\Users\Admin\AppData\Local\Temp\bvhqwzzhojxexmhajxkoqnwgtahspl"
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:4664
        • C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe
          C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe /stext "C:\Users\Admin\AppData\Local\Temp\lymixrsicrpiiadesixqbarpcortiwejx"
          3⤵
          • Accesses Microsoft Outlook accounts
          PID:2532
        • C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe
          C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe /stext "C:\Users\Admin\AppData\Local\Temp\wssbyk"
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4768

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Defense Evasion

    Modify Registry

    1
    T1112

    Credential Access

    Credentials in Files

    1
    T1081

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    2
    T1082

    Collection

    Data from Local System

    1
    T1005

    Email Collection

    1
    T1114

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\bvhqwzzhojxexmhajxkoqnwgtahspl
      Filesize

      4KB

      MD5

      30177e1276595fd69ea96b692f49d776

      SHA1

      75769c29031ca1ad8e175dd700c74b5e35c5b0c7

      SHA256

      76d4066990e2ee2776f733a25ce23e9af545fd6f1a3b5760d603bdc05d9402d5

      SHA512

      ccdf20174d299de8ec21445faaf4ebe95c04bd7634c9fe138ba54262b754620c2dfd53a5c94b7d53518181d2eab7b5c97d7933d3a66d05220b06aee120893d4b

    • memory/2532-154-0x0000000000400000-0x0000000000457000-memory.dmp
      Filesize

      348KB

    • memory/2532-152-0x0000000000000000-mapping.dmp
    • memory/3504-150-0x0000000000000000-mapping.dmp
    • memory/4056-133-0x0000000005520000-0x0000000005542000-memory.dmp
      Filesize

      136KB

    • memory/4056-143-0x0000000007350000-0x00000000078F4000-memory.dmp
      Filesize

      5.6MB

    • memory/4056-142-0x00000000055F0000-0x0000000005682000-memory.dmp
      Filesize

      584KB

    • memory/4056-132-0x0000000000260000-0x0000000000268000-memory.dmp
      Filesize

      32KB

    • memory/4232-163-0x0000000010000000-0x0000000010019000-memory.dmp
      Filesize

      100KB

    • memory/4232-159-0x0000000010000000-0x0000000010019000-memory.dmp
      Filesize

      100KB

    • memory/4232-162-0x0000000010000000-0x0000000010019000-memory.dmp
      Filesize

      100KB

    • memory/4232-164-0x0000000010000000-0x0000000010019000-memory.dmp
      Filesize

      100KB

    • memory/4232-144-0x0000000000000000-mapping.dmp
    • memory/4232-145-0x0000000000400000-0x000000000047F000-memory.dmp
      Filesize

      508KB

    • memory/4232-146-0x0000000000400000-0x000000000047F000-memory.dmp
      Filesize

      508KB

    • memory/4232-147-0x0000000000400000-0x000000000047F000-memory.dmp
      Filesize

      508KB

    • memory/4232-148-0x0000000000400000-0x000000000047F000-memory.dmp
      Filesize

      508KB

    • memory/4232-149-0x0000000000400000-0x000000000047F000-memory.dmp
      Filesize

      508KB

    • memory/4508-139-0x00000000066C0000-0x00000000066DE000-memory.dmp
      Filesize

      120KB

    • memory/4508-141-0x0000000006BC0000-0x0000000006BDA000-memory.dmp
      Filesize

      104KB

    • memory/4508-140-0x0000000007D10000-0x000000000838A000-memory.dmp
      Filesize

      6.5MB

    • memory/4508-138-0x0000000006080000-0x00000000060E6000-memory.dmp
      Filesize

      408KB

    • memory/4508-137-0x0000000005F20000-0x0000000005F86000-memory.dmp
      Filesize

      408KB

    • memory/4508-136-0x0000000005880000-0x0000000005EA8000-memory.dmp
      Filesize

      6.2MB

    • memory/4508-135-0x00000000030D0000-0x0000000003106000-memory.dmp
      Filesize

      216KB

    • memory/4508-134-0x0000000000000000-mapping.dmp
    • memory/4664-151-0x0000000000000000-mapping.dmp
    • memory/4664-156-0x0000000000400000-0x0000000000478000-memory.dmp
      Filesize

      480KB

    • memory/4664-157-0x0000000000400000-0x0000000000478000-memory.dmp
      Filesize

      480KB

    • memory/4768-153-0x0000000000000000-mapping.dmp
    • memory/4768-155-0x0000000000400000-0x0000000000424000-memory.dmp
      Filesize

      144KB