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Analysis

  • max time kernel
    148s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-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) 52 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:112
    • 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:400
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\LfCyGc" /XML "C:\Users\Admin\AppData\Local\Temp\tmpBC4B.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2144
    • 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:2600
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
      2⤵
        PID:3424

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

      Filesize

      2KB

      MD5

      968cb9309758126772781b83adb8a28f

      SHA1

      8da30e71accf186b2ba11da1797cf67f8f78b47c

      SHA256

      92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

      SHA512

      4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

      Filesize

      18KB

      MD5

      494381b79410c2707bab7c026860c417

      SHA1

      0c1451a9a32d3d9ef6f6dcd91317a1951156c768

      SHA256

      acd757e33199a07b593b9a36fceb547906be36feb272d5a0d015f825cb7f4635

      SHA512

      107c58b30454bdfa46a9e7eb9eef8766544c3db89f1163c8c653bdf798fbdbeb2a2b626e8f918d6e3572688795787a06be64ee22f6c083f778e9bd642e85770e

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_dc1vkstn.wuz.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Temp\tmpBC4B.tmp

      Filesize

      1KB

      MD5

      ce0ec538b8ac8e1b016e92194056d2ac

      SHA1

      aa7d50ba2cfcb59e78c71a9e0bcd0b6b188d351f

      SHA256

      f85f0368637f92b6bfd25846b29c805be2362929c769c80452adbb3ccd03f153

      SHA512

      75bb33649d637043f4a497f664b4064b9c971abeda0305f4b73ff67332fbb74901a4ba042d29ceffeb49e24d94ae654df920a47100f03c792552c082e9635e1a

    • memory/112-8-0x0000000008090000-0x000000000809E000-memory.dmp

      Filesize

      56KB

    • memory/112-11-0x0000000074790000-0x0000000074F40000-memory.dmp

      Filesize

      7.7MB

    • memory/112-6-0x0000000008030000-0x0000000008044000-memory.dmp

      Filesize

      80KB

    • memory/112-7-0x0000000008080000-0x000000000808A000-memory.dmp

      Filesize

      40KB

    • memory/112-4-0x00000000055A0000-0x00000000055B0000-memory.dmp

      Filesize

      64KB

    • memory/112-9-0x00000000080E0000-0x00000000081A0000-memory.dmp

      Filesize

      768KB

    • memory/112-10-0x0000000008390000-0x000000000842C000-memory.dmp

      Filesize

      624KB

    • memory/112-5-0x0000000005360000-0x000000000536A000-memory.dmp

      Filesize

      40KB

    • memory/112-12-0x00000000055A0000-0x00000000055B0000-memory.dmp

      Filesize

      64KB

    • memory/112-53-0x0000000074790000-0x0000000074F40000-memory.dmp

      Filesize

      7.7MB

    • memory/112-3-0x00000000053F0000-0x0000000005482000-memory.dmp

      Filesize

      584KB

    • memory/112-0-0x0000000000890000-0x000000000097C000-memory.dmp

      Filesize

      944KB

    • memory/112-2-0x00000000059A0000-0x0000000005F44000-memory.dmp

      Filesize

      5.6MB

    • memory/112-1-0x0000000074790000-0x0000000074F40000-memory.dmp

      Filesize

      7.7MB

    • memory/400-38-0x0000000006010000-0x0000000006364000-memory.dmp

      Filesize

      3.3MB

    • memory/400-55-0x00000000065C0000-0x00000000065DE000-memory.dmp

      Filesize

      120KB

    • memory/400-88-0x0000000007B70000-0x0000000007C06000-memory.dmp

      Filesize

      600KB

    • memory/400-87-0x0000000007960000-0x000000000796A000-memory.dmp

      Filesize

      40KB

    • memory/400-22-0x0000000005620000-0x0000000005642000-memory.dmp

      Filesize

      136KB

    • memory/400-60-0x000000007F750000-0x000000007F760000-memory.dmp

      Filesize

      64KB

    • memory/400-20-0x0000000002CB0000-0x0000000002CC0000-memory.dmp

      Filesize

      64KB

    • memory/400-85-0x00000000078F0000-0x000000000790A000-memory.dmp

      Filesize

      104KB

    • memory/400-71-0x0000000006BD0000-0x0000000006BEE000-memory.dmp

      Filesize

      120KB

    • memory/400-82-0x0000000002CB0000-0x0000000002CC0000-memory.dmp

      Filesize

      64KB

    • memory/400-72-0x0000000002CB0000-0x0000000002CC0000-memory.dmp

      Filesize

      64KB

    • memory/400-100-0x0000000074790000-0x0000000074F40000-memory.dmp

      Filesize

      7.7MB

    • memory/400-19-0x0000000074790000-0x0000000074F40000-memory.dmp

      Filesize

      7.7MB

    • memory/400-17-0x0000000002CE0000-0x0000000002D16000-memory.dmp

      Filesize

      216KB

    • memory/400-59-0x0000000073260000-0x00000000732AC000-memory.dmp

      Filesize

      304KB

    • memory/400-56-0x0000000006610000-0x000000000665C000-memory.dmp

      Filesize

      304KB

    • memory/2600-99-0x0000000074790000-0x0000000074F40000-memory.dmp

      Filesize

      7.7MB

    • memory/2600-61-0x0000000073260000-0x00000000732AC000-memory.dmp

      Filesize

      304KB

    • memory/2600-23-0x0000000074790000-0x0000000074F40000-memory.dmp

      Filesize

      7.7MB

    • memory/2600-25-0x00000000054A0000-0x0000000005506000-memory.dmp

      Filesize

      408KB

    • memory/2600-18-0x0000000004E00000-0x0000000005428000-memory.dmp

      Filesize

      6.2MB

    • memory/2600-84-0x0000000002250000-0x0000000002260000-memory.dmp

      Filesize

      64KB

    • memory/2600-83-0x0000000006D40000-0x0000000006DE3000-memory.dmp

      Filesize

      652KB

    • memory/2600-86-0x00000000074E0000-0x0000000007B5A000-memory.dmp

      Filesize

      6.5MB

    • memory/2600-93-0x00000000071B0000-0x00000000071B8000-memory.dmp

      Filesize

      32KB

    • memory/2600-90-0x00000000070C0000-0x00000000070CE000-memory.dmp

      Filesize

      56KB

    • memory/2600-24-0x0000000002250000-0x0000000002260000-memory.dmp

      Filesize

      64KB

    • memory/2600-26-0x0000000002250000-0x0000000002260000-memory.dmp

      Filesize

      64KB

    • memory/2600-58-0x0000000006CF0000-0x0000000006D22000-memory.dmp

      Filesize

      200KB

    • memory/2600-27-0x0000000005510000-0x0000000005576000-memory.dmp

      Filesize

      408KB

    • memory/2600-89-0x0000000007090000-0x00000000070A1000-memory.dmp

      Filesize

      68KB

    • memory/2600-57-0x000000007F720000-0x000000007F730000-memory.dmp

      Filesize

      64KB

    • memory/2600-91-0x00000000070D0000-0x00000000070E4000-memory.dmp

      Filesize

      80KB

    • memory/2600-92-0x00000000071D0000-0x00000000071EA000-memory.dmp

      Filesize

      104KB

    • memory/3424-37-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-54-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-51-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-52-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-49-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-39-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-101-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-102-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-103-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-104-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-105-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-107-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-108-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-109-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-111-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-112-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-113-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-115-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-116-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-117-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-118-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-120-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-121-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-122-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-124-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-125-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-126-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-128-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-129-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-130-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-132-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-133-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-134-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-136-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-137-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-138-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-140-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-141-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-142-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-144-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-145-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-146-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-148-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-149-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-150-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-152-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-153-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-154-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-156-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-157-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-158-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3424-160-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB