remcos | 8ffbefcd876a03f1b90e57fc63b13b1b20140e1a7665bdb8c560489e7c80835f

Analysis

max time kernel
149s
max time network
124s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
04/08/2026, 02:37

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General

Target
Request for Proforma Invoice Against Purchase Order1/Request for Proforma Invoice Against Purchase Order1.js
Size 166KB
Sample260804-c4eg7szhrc
SHA256 8ffbefcd876a03f1b90e57fc63b13b1b20140e1a7665bdb8c560489e7c80835f
MD5 310b04336470ec03dc08090b6d5e20f3
SHA1 c62d2c52b77f08e9c4e2cd612f2ab4a2684f6087
SHA512 f3e26577748bef1d960eae07c7cb85145bc68ea70eed0a9c84e18ee14c6cfcd7b5cc90202af55b83cbbeaf2f04ef59e986d316df26826e5de711c4a95498b4ae
SSDEEP 3072:CbCacVX1ld5xzCIbKbGBA6ALMZw3NQJFJmEKWgGaQWYd8:CGrL5RlKKZvZw3NMFJ+WgFQ9y
TLSH
T1FAF39E83854857DDFE6D0ECEC25F705B80F2916A3E626759B9C36393BE37D00A931A60
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

remotehost execution remcos persistence rat

Malware Config

Extracted

Family

remcos

Version

7.2.6 Pro

Botnet

RemoteHost

23.95.103.253:2404

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
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-5LMRVT
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
take_screenshot_option
false
take_screenshot_time
5

Signatures

Family: Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

Badlisted process makes network request 2 IoCs

Network request originating from process or tool commonly abused by malware.

flow	pid	Process
2	6928	powershell.exe
3	6928	powershell.exe

Registers new Windows logon scripts automatically executed at logon. 1 TTPs 1 IoCs

persistence

Logon Script (Windows)

T1037.001

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1014449518-1831897916-4205727055-1000\Environment\UserInitMprLogonScript = "\"C:\\Windows\\system32\\wscript.exe\" \"C:\\Users\\Admin\\AppData\\Local\\Microsoft\\Windows\\v3300\\v150.js\""	powershell.exe

Command and Scripting Interpreter: JavaScript 1 TTPs
execution

JavaScript
T1059.007
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Executes a command shell one-liner 1 TTPs 1 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
3792	cmd.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
6928	powershell.exe
6928	powershell.exe
6928	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	6928	powershell.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2508 wrote to memory of 1624	2508	wscript.exe	89
PID 1624 wrote to memory of 6300	1624	conhost.exe	90
PID 6300 wrote to memory of 3792	6300	conhost.exe	91
PID 3792 wrote to memory of 4064	3792	cmd.exe	92
PID 3792 wrote to memory of 6928	3792	cmd.exe	93

C:\Windows\system32\wscript.exe
wscript.exe "C:\Users\Admin\AppData\Local\Temp\Request for Proforma Invoice Against Purchase Order1\Request for Proforma Invoice Against Purchase Order1.js"
1⤵
- Suspicious use of WriteProcessMemory
PID:2508
- C:\Windows\System32\conhost.exe
  "C:\Windows\System32\conhost.exe" --headless conhost.exe --headless cmd.exe /c "echo $ExecutionContext.InvokeCommand.InvokeScript([Environment]::GetEnvironmentVariable('flsvOhfhTrhJX','Process'))| powershell.exe -W H -noP -noni -"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1624
- - C:\Windows\System32\conhost.exe
    conhost.exe --headless cmd.exe /c "echo $ExecutionContext.InvokeCommand.InvokeScript([Environment]::GetEnvironmentVariable('flsvOhfhTrhJX','Process'))| powershell.exe -W H -noP -noni -"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:6300
  - - C:\Windows\System32\cmd.exe
      cmd.exe /c "echo $ExecutionContext.InvokeCommand.InvokeScript([Environment]::GetEnvironmentVariable('flsvOhfhTrhJX','Process'))| powershell.exe -W H -noP -noni -"
      4⤵
      Executes a command shell one-liner
      Suspicious use of WriteProcessMemory
      PID:3792
    - - C:\Windows\system32\cmd.exe
        
        C:\Windows\system32\cmd.exe /S /D /c" echo $ExecutionContext.InvokeCommand.InvokeScript([Environment]::GetEnvironmentVariable('flsvOhfhTrhJX','Process'))"
        5⤵
        
        PID:4064
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        powershell.exe -W H -noP -noni -
        5⤵
        Badlisted process makes network request
        Registers new Windows logon scripts automatically executed at logon.
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:6928

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k GPSvcGroup
1⤵
PID:6028

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

JavaScript

T1059.007

Windows Command Shell

T1059.003

Persistence

Boot or Logon Initialization Scripts

T1037

Logon Script (Windows)

T1037.001

Privilege Escalation

Boot or Logon Initialization Scripts

T1037

Logon Script (Windows)

T1037.001

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/6928-0-0x00007FFCEE58F000-0x00007FFCEE590000-memory.dmp

Download

memory/6928-1-0x00007FFCEE400000-0x00007FFCEEDA4000-memory.dmp

Download

memory/6928-4-0x000001ACE6A40000-0x000001ACE6A62000-memory.dmp

Download

memory/6928-5-0x00007FFCEE400000-0x00007FFCEEDA4000-memory.dmp

Download

memory/6928-6-0x00007FFCEE400000-0x00007FFCEEDA4000-memory.dmp

Download

memory/6928-7-0x00007FFCEE400000-0x00007FFCEEDA4000-memory.dmp

Download

memory/6928-8-0x00007FFCEE400000-0x00007FFCEEDA4000-memory.dmp

Download

memory/6928-9-0x00007FFCEE400000-0x00007FFCEEDA4000-memory.dmp

Download

memory/6928-10-0x00007FFCEE400000-0x00007FFCEEDA4000-memory.dmp

Download

memory/6928-11-0x000001ACE6B10000-0x000001ACE6B62000-memory.dmp

Download

memory/6928-13-0x000001ACE6AF0000-0x000001ACE6B02000-memory.dmp

Download

memory/6928-12-0x00007FFCEE400000-0x00007FFCEEDA4000-memory.dmp

Download

memory/6928-14-0x00007FFCEE400000-0x00007FFCEEDA4000-memory.dmp

Download

memory/6928-15-0x00007FFCEE400000-0x00007FFCEEDA4000-memory.dmp

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memory/6928-16-0x00007FFCEE400000-0x00007FFCEEDA4000-memory.dmp

Download

memory/6928-19-0x000001ACFEBA0000-0x000001ACFEC4B000-memory.dmp

Download

memory/6928-18-0x000001ACFEBA0000-0x000001ACFEC4B000-memory.dmp

Download

memory/6928-17-0x000001ACFEBA0000-0x000001ACFEC4B000-memory.dmp

Download

memory/6928-21-0x000001ACFEBA0000-0x000001ACFEC4B000-memory.dmp

Download

memory/6928-20-0x000001ACFEBA0000-0x000001ACFEC4B000-memory.dmp

Download

memory/6928-23-0x00007FFCEE400000-0x00007FFCEEDA4000-memory.dmp

Download

memory/6928-24-0x000001ACFEBA0000-0x000001ACFEC4B000-memory.dmp

Download

memory/6928-25-0x000001ACFEBA0000-0x000001ACFEC4B000-memory.dmp

Download

memory/6928-26-0x000001ACFEBA0000-0x000001ACFEC4B000-memory.dmp

Download

memory/6928-31-0x000001ACFEBA0000-0x000001ACFEC4B000-memory.dmp

Download

memory/6928-32-0x000001ACFEBA0000-0x000001ACFEC4B000-memory.dmp

Download