Analysis
- max time kernel
148s - max time network
127s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
22/10/2026, 04:25
General
- Target Swift_Transaction7398.JS.js
- Size 6.6MB
- Sample261022-e196tacw3k
- SHA256 497befff3913668d098d346093f5b3647dcfb6b9924783b25b01d7bc038779bc
Malware Config
Extracted
-
remcos
-
7.3.1 Pro
-
RemoteHost
-
ocean012.duckdns.org:7474
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oceanbiggi907.duckdns.org:7474
-
audio_folder
MicRecords
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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
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hide_keylog_file
false
-
install_flag
false
-
keylog_crypt
false
-
keylog_file
logs.dat
-
keylog_flag
false
-
keylog_folder
remcos
-
mouse_option
false
-
mutex
yut-QEKAE1
-
screenshot_crypt
false
-
screenshot_flag
false
-
screenshot_folder
Screenshots
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screenshot_path
%AppData%
-
screenshot_time
10
-
take_screenshot_option
false
-
take_screenshot_time
5
Signatures
- Family: DonutLoader
DonutLoader is a position-independent code that enables in-memory execution of VBScript, JScript, EXE, DLL files and dotNET assemblies.
- Family: Remcos
Remcos is a closed-source remote control and surveillance software.
- Detects DonutLoader 1 IoCs
- Executes dropped EXE 1 IoCs
- Loads dropped DLL 1 IoCs
- Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses Microsoft Outlook profiles 1 TTPs 2 IoCs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Command and Scripting Interpreter: JavaScript 1 TTPs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Executes a command shell one-liner 1 TTPs 3 IoCs
Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.
- Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
- Modifies registry class 2 IoCs
- NTFS ADS 1 IoCs
- Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious use of WriteProcessMemory 6 IoCs
- Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
- outlook_office_path 1 IoCs
Processes
-
C:\Windows\system32\wscript.exewscript.exe C:\Users\Admin\AppData\Local\Temp\Swift_Transaction7398.JS.js1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
-
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c echo. > "C:\Users\Admin\AppData\Local\Temp\Swift_Transaction7398.JS.js:Zone.Identifier"2⤵
- Executes a command shell one-liner
- NTFS ADS
-
-
C:\Users\Admin\Documents\TSZSDEERCUVECQNJ.exe"C:\Users\Admin\Documents\TSZSDEERCUVECQNJ.exe" C:\Users\Admin\Documents\JNQCEVUCREEDSZST2⤵
- Executes dropped EXE
- Loads dropped DLL
- Accesses Microsoft Outlook profiles
- Reads the TCP/IP host and domain name from the registry
- Suspicious use of WriteProcessMemory
- outlook_office_path
-
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c schtasks /query /tn "TSZSDEERCUVECQNJ" 2>nul3⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\schtasks.exeschtasks /query /tn "TSZSDEERCUVECQNJ"4⤵
-
-
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c schtasks /create /sc minute /mo 10 /tn "TSZSDEERCUVECQNJ" /tr "wscript.exe \"C:\Users\Admin\Documents\JNQCEVUCREEDSZST.vbs\"" /ru "Admin" /f /it3⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\schtasks.exeschtasks /create /sc minute /mo 10 /tn "TSZSDEERCUVECQNJ" /tr "wscript.exe \"C:\Users\Admin\Documents\JNQCEVUCREEDSZST.vbs\"" /ru "Admin" /f /it4⤵
- Scheduled Task/Job: Scheduled Task
-
-
-
-
C:\Windows\system32\wscript.exewscript.exe1⤵
Network
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
2JavaScript
1Windows Command Shell
1Scheduled Task/Job
1Scheduled Task
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
JNQCEVUCREEDSZST
TSZSDEERCUVECQNJ.exe
TSZSDEERCUVECQNJ.mui
lua51.dll
memory/896-15-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-16-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-17-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-18-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-19-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-22-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-25-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-26-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-24-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-23-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-27-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-29-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-28-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-32-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-34-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-33-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-31-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-30-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-36-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-35-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-37-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-40-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-43-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-50-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-49-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-48-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-47-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-46-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-45-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-44-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-42-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-41-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-39-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-38-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-60-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-64-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-63-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-62-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-61-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-59-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-57-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-56-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-55-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-54-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-53-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-58-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-52-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-51-0x0000000057FD0000-0x0000000057FE0000-memory.dmp
memory/896-65-0x0000000002670000-0x0000000003670000-memory.dmp
memory/896-66-0x0000000014580000-0x000000001462F000-memory.dmp
memory/896-67-0x0000000180000000-0x000000018012C000-memory.dmp
memory/896-70-0x0000000180000000-0x000000018012C000-memory.dmp
memory/896-71-0x0000000180000000-0x000000018012C000-memory.dmp
memory/896-72-0x0000000000400000-0x000000000040D000-memory.dmp
memory/896-73-0x0000000066D80000-0x0000000066DF4000-memory.dmp