remcos | 22b73e8359df7ff75af4b2bd468a093f2e08f8ba71e404276c1a3e8d6049a753

Analysis

max time kernel
148s
max time network
146s
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, 12:48

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General

Target
Fedex_Shipment_Notice_372609808177_PDF.js
Size 1001KB
Sample260804-p15answ1d1
SHA256 22b73e8359df7ff75af4b2bd468a093f2e08f8ba71e404276c1a3e8d6049a753
MD5 5ae8718d226b2d261bf4a18aa3b1295c
SHA1 83d14ac53c181d7c989d46dabee3dac6c4d1fc8f
SHA512 ed29e542c2b078df854f396dc0924beb6f473996d78d6578997f190a31075002c1ae63e8e0d4c060aa6dc9bb81c1b0e70ee5b9984ae204867baadf6fcd02b719
SSDEEP 768:UoV66qim7XRVsim7pbX7XJVm8sQX31qi9YJxeJxiUbbX7c898UxeRysbpbX7cDs2:7MRIH
TLSH
T1D32541F29EE7ED00EA8DBF53AD100D5D85DA206BEA10444F3139BDF1493192BE4997B2
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

1111111 execution remcos persistence privilege_escalation rat

Malware Config

Extracted

Family

remcos

Version

7.2.6 Pro

Botnet

1111111

icingwater.duckdns.org:4688
officefagbo.duckdns.org:4688

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
yui-skj-yws-YU4OBS
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

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	5636	5724	powershell.exe	89

Badlisted process makes network request 1 IoCs

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

flow	pid	Process
5	5636	powershell.exe

Creates a file in the Startup directory 1 TTPs 1 IoCs

A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.

persistence privilege_escalation

Registry Run Keys / Startup Folder

T1547.001

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Fedex_Shipment_Notice_372609808177_PDF.js	wscript.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5636 set thread context of 1480	5636	powershell.exe	92

Command and Scripting Interpreter: JavaScript 1 TTPs
execution

JavaScript
T1059.007

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
5636	powershell.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{A8CDFF1C-4878-43be-B5FD-F8091C1C60D0}\Instance\	wscript.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
5636	powershell.exe
5636	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5636	powershell.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 5636 wrote to memory of 1480	5636	powershell.exe	92
PID 5636 wrote to memory of 1480	5636	powershell.exe	92
PID 5636 wrote to memory of 1480	5636	powershell.exe	92
PID 5636 wrote to memory of 1480	5636	powershell.exe	92
PID 5636 wrote to memory of 1480	5636	powershell.exe	92
PID 5636 wrote to memory of 1480	5636	powershell.exe	92
PID 5636 wrote to memory of 1480	5636	powershell.exe	92
PID 5636 wrote to memory of 1480	5636	powershell.exe	92

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\Fedex_Shipment_Notice_372609808177_PDF.js
1⤵
- Creates a file in the Startup directory
- Modifies registry class
PID:3576

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -NoProfile -Command "Invoke-Expression $env:Rejang"
1⤵
- Process spawned unexpected child process
- Badlisted process makes network request
- Suspicious use of SetThreadContext
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5636
- C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Caspol.exe
  C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Caspol.exe
  2⤵
  PID:1480

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

JavaScript

T1059.007

PowerShell

T1059.001

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

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/1480-21-0x0000000140000000-0x00000001400AB000-memory.dmp

Download

memory/5636-12-0x00007FFA37C30000-0x00007FFA385D4000-memory.dmp

Download

memory/5636-2-0x00007FFA37C30000-0x00007FFA385D4000-memory.dmp

Download

memory/5636-5-0x000001DEA8EF0000-0x000001DEA8F12000-memory.dmp

Download

memory/5636-6-0x00007FFA37C30000-0x00007FFA385D4000-memory.dmp

Download

memory/5636-7-0x00007FFA37C30000-0x00007FFA385D4000-memory.dmp

Download

memory/5636-8-0x00007FFA37C30000-0x00007FFA385D4000-memory.dmp

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memory/5636-9-0x00007FFA37C30000-0x00007FFA385D4000-memory.dmp

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memory/5636-10-0x00007FFA37C30000-0x00007FFA385D4000-memory.dmp

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memory/5636-0-0x00007FFA37DBF000-0x00007FFA37DC0000-memory.dmp

Download

memory/5636-11-0x00007FFA37C30000-0x00007FFA385D4000-memory.dmp

Download

memory/5636-15-0x00007FFA37C30000-0x00007FFA385D4000-memory.dmp

Download

memory/5636-14-0x00007FFA37C30000-0x00007FFA385D4000-memory.dmp

Download

memory/5636-13-0x00007FFA37C30000-0x00007FFA385D4000-memory.dmp

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memory/5636-16-0x00007FFA37C30000-0x00007FFA385D4000-memory.dmp

Download

memory/5636-17-0x00007FFA37C30000-0x00007FFA385D4000-memory.dmp

Download

memory/5636-18-0x00007FFA37C30000-0x00007FFA385D4000-memory.dmp

Download

memory/5636-19-0x000001DEC1770000-0x000001DEC1802000-memory.dmp

Download

memory/5636-20-0x000001DEA8DC0000-0x000001DEA8DCA000-memory.dmp

Download

memory/5636-1-0x00007FFA37C30000-0x00007FFA385D4000-memory.dmp

Download

memory/5636-23-0x00007FFA37C30000-0x00007FFA385D4000-memory.dmp

Download