Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-02-2024 05:36

General

  • Target

    Purchase Order-ListSamples_xls.scr

  • Size

    932KB

  • MD5

    acf1a5648f805a2e245c5ca3ed592298

  • SHA1

    c6f2fad033b2b6aa910a75c5cd3d94184406fde7

  • SHA256

    1351e61c2b4c13ccf8b28d7f1f9aa82f7cce424e723a30bacbfa404d1d98fa6d

  • SHA512

    5e28c34f7f1a46cf41af0d51c5fb941c811212a0c96f933e6f9464e143b27fef8412a63e0df0cd11894a7df171759284d22f9eb947921d0c9d5c0f7e330e7ea8

  • SSDEEP

    24576:OtK2xcQUuT2bpG4tDjoL4BjCtLPM3pP3j++VTZ:Os2xL2lG4Vg8KLP4P3jrZ

Score
10/10

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

lora1.taiwantradeglobal.com:2404

lora2.taiwantradeglobal.com:2404

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

    Rmc-R9UMK0

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) 50 IoCs
  • 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).

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Purchase Order-ListSamples_xls.scr
    "C:\Users\Admin\AppData\Local\Temp\Purchase Order-ListSamples_xls.scr" /S
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1636
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
      2⤵
        PID:1016
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\LfCyGc" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA875.tmp"
        2⤵
        • Creates scheduled task(s)
        PID:2792
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\LfCyGc.exe"
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4136
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Purchase Order-ListSamples_xls.scr"
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4984

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ereikckm.r2p.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Temp\tmpA875.tmp

      Filesize

      1KB

      MD5

      931eba755b94d6be7e658e5dce513a91

      SHA1

      bece661e13be05d9668e5ecb72563f194f8dc92a

      SHA256

      4ea7112af7d21775a01d18b7adbd3179bbf1c5a043f762117e1ec9801616a785

      SHA512

      e75fde5b002ef2a3edd0daaa750ba80fd951e1829dbc453f2ca562a9d8b3159aac32bc503f565638478c5c15911b3612abccf0727437054edd1aafa20137bc68

    • memory/1016-141-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-116-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-112-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-110-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-109-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-138-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-108-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-107-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-105-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-104-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-103-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-156-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-154-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-137-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-153-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-152-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-150-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-149-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-148-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-52-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-54-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-146-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-101-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-145-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-144-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-136-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-100-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-26-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-25-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-142-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-113-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-140-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-99-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-98-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-33-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-134-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-133-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-132-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-130-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-129-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-128-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-126-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-125-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-124-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-122-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-121-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-120-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-118-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-97-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-117-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1016-114-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1636-11-0x0000000074B90000-0x0000000075340000-memory.dmp

      Filesize

      7.7MB

    • memory/1636-12-0x0000000004F60000-0x0000000004F70000-memory.dmp

      Filesize

      64KB

    • memory/1636-2-0x0000000005630000-0x0000000005BD4000-memory.dmp

      Filesize

      5.6MB

    • memory/1636-8-0x0000000007DC0000-0x0000000007DCE000-memory.dmp

      Filesize

      56KB

    • memory/1636-1-0x0000000074B90000-0x0000000075340000-memory.dmp

      Filesize

      7.7MB

    • memory/1636-3-0x0000000004FA0000-0x0000000005032000-memory.dmp

      Filesize

      584KB

    • memory/1636-0-0x00000000005C0000-0x00000000006AC000-memory.dmp

      Filesize

      944KB

    • memory/1636-51-0x0000000074B90000-0x0000000075340000-memory.dmp

      Filesize

      7.7MB

    • memory/1636-7-0x0000000007DB0000-0x0000000007DBA000-memory.dmp

      Filesize

      40KB

    • memory/1636-10-0x00000000080C0000-0x000000000815C000-memory.dmp

      Filesize

      624KB

    • memory/1636-9-0x0000000007E10000-0x0000000007ED0000-memory.dmp

      Filesize

      768KB

    • memory/1636-6-0x0000000007C20000-0x0000000007C34000-memory.dmp

      Filesize

      80KB

    • memory/1636-5-0x0000000004F50000-0x0000000004F5A000-memory.dmp

      Filesize

      40KB

    • memory/1636-4-0x0000000004F60000-0x0000000004F70000-memory.dmp

      Filesize

      64KB

    • memory/4136-92-0x00000000071A0000-0x00000000071A8000-memory.dmp

      Filesize

      32KB

    • memory/4136-83-0x0000000006B90000-0x0000000006C33000-memory.dmp

      Filesize

      652KB

    • memory/4136-23-0x00000000046A0000-0x00000000046B0000-memory.dmp

      Filesize

      64KB

    • memory/4136-24-0x00000000046A0000-0x00000000046B0000-memory.dmp

      Filesize

      64KB

    • memory/4136-91-0x00000000071C0000-0x00000000071DA000-memory.dmp

      Filesize

      104KB

    • memory/4136-39-0x0000000005580000-0x00000000055E6000-memory.dmp

      Filesize

      408KB

    • memory/4136-22-0x0000000074B90000-0x0000000075340000-memory.dmp

      Filesize

      7.7MB

    • memory/4136-59-0x0000000073660000-0x00000000736AC000-memory.dmp

      Filesize

      304KB

    • memory/4136-60-0x000000007F450000-0x000000007F460000-memory.dmp

      Filesize

      64KB

    • memory/4136-88-0x0000000007080000-0x0000000007091000-memory.dmp

      Filesize

      68KB

    • memory/4136-95-0x0000000074B90000-0x0000000075340000-memory.dmp

      Filesize

      7.7MB

    • memory/4136-71-0x0000000006090000-0x00000000060AE000-memory.dmp

      Filesize

      120KB

    • memory/4136-84-0x00000000074C0000-0x0000000007B3A000-memory.dmp

      Filesize

      6.5MB

    • memory/4136-86-0x0000000006EF0000-0x0000000006EFA000-memory.dmp

      Filesize

      40KB

    • memory/4136-72-0x00000000046A0000-0x00000000046B0000-memory.dmp

      Filesize

      64KB

    • memory/4984-85-0x0000000006E20000-0x0000000006E3A000-memory.dmp

      Filesize

      104KB

    • memory/4984-82-0x00000000046B0000-0x00000000046C0000-memory.dmp

      Filesize

      64KB

    • memory/4984-87-0x00000000070A0000-0x0000000007136000-memory.dmp

      Filesize

      600KB

    • memory/4984-61-0x0000000073660000-0x00000000736AC000-memory.dmp

      Filesize

      304KB

    • memory/4984-58-0x000000007F600000-0x000000007F610000-memory.dmp

      Filesize

      64KB

    • memory/4984-19-0x0000000074B90000-0x0000000075340000-memory.dmp

      Filesize

      7.7MB

    • memory/4984-20-0x00000000046B0000-0x00000000046C0000-memory.dmp

      Filesize

      64KB

    • memory/4984-57-0x0000000006AB0000-0x0000000006AE2000-memory.dmp

      Filesize

      200KB

    • memory/4984-56-0x0000000006050000-0x000000000609C000-memory.dmp

      Filesize

      304KB

    • memory/4984-55-0x0000000005AF0000-0x0000000005B0E000-memory.dmp

      Filesize

      120KB

    • memory/4984-53-0x0000000005740000-0x0000000005A94000-memory.dmp

      Filesize

      3.3MB

    • memory/4984-49-0x00000000054D0000-0x0000000005536000-memory.dmp

      Filesize

      408KB

    • memory/4984-89-0x0000000007050000-0x000000000705E000-memory.dmp

      Filesize

      56KB

    • memory/4984-27-0x0000000005350000-0x0000000005372000-memory.dmp

      Filesize

      136KB

    • memory/4984-90-0x0000000007060000-0x0000000007074000-memory.dmp

      Filesize

      80KB

    • memory/4984-96-0x0000000074B90000-0x0000000075340000-memory.dmp

      Filesize

      7.7MB

    • memory/4984-18-0x0000000004CF0000-0x0000000005318000-memory.dmp

      Filesize

      6.2MB

    • memory/4984-17-0x0000000004520000-0x0000000004556000-memory.dmp

      Filesize

      216KB