General
- Target RFQ PO-3401121950 .pdf.JS.js
- Size 4.8MB
- Sample261029-k6cemabx6k
- SHA256 5e95166f4cf679f7e3f15d98b32862c414c35174f77e688d788284552e2d06c6
- MD5 b444d61812640ca7ece0a0c1da5c2301
- SHA1 141d504ed3ba2f1eca6f3148c7600af71d952a45
- SHA512 8cdedec0222ceebee8ebab258f603be73d67573427b28eb9287a2912321ceb22c39301cb24b7333edde0d8751cb7ec23632095adcd346d23263e8c5ed038ac31
- SSDEEP 98304:SbZtBd3ki5MxtJbNnWzulgHeixL7I49Tft7Ldm28khAnaxwWEjKNyXFKPYXAKdcA:akBNWzu8L77NLmxkh+a9HoAWvAG
- TLSH T1313649482CD7F77199BC0E5C4E1F1F87063D6E8B9B65E82F2FA814D5EB5ABC62098014
- MD5 SHA1 SHA512 SSDEEP TLSH
Static task
static1
Behavioral task
behavioral1
Sample
RFQ PO-3401121950 .pdf.JS.js
Resource
win10v2004-20260911-en
Behavioral task
behavioral2
Sample
RFQ PO-3401121950 .pdf.JS.js
Resource
win11ltsc2024-20260911-en
Malware Config
Extracted
-
remcos
-
7.2.5 Pro
-
RemoteHost
-
ja00.duckdns.org:2424
-
jaja00.duckdns.org:2424
-
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
yhf-WNJRI0
-
screenshot_crypt
false
-
screenshot_flag
false
-
screenshot_folder
Screenshots
-
screenshot_path
%AppData%
-
screenshot_time
10
-
take_screenshot_option
false
-
take_screenshot_time
5
Targets
-
- Target RFQ PO-3401121950 .pdf.JS.js
- Size 4.8MB
- SHA256 5e95166f4cf679f7e3f15d98b32862c414c35174f77e688d788284552e2d06c6
- MD5 b444d61812640ca7ece0a0c1da5c2301
- SHA1 141d504ed3ba2f1eca6f3148c7600af71d952a45
- SHA512 8cdedec0222ceebee8ebab258f603be73d67573427b28eb9287a2912321ceb22c39301cb24b7333edde0d8751cb7ec23632095adcd346d23263e8c5ed038ac31
- SSDEEP 98304:SbZtBd3ki5MxtJbNnWzulgHeixL7I49Tft7Ldm28khAnaxwWEjKNyXFKPYXAKdcA:akBNWzu8L77NLmxkh+a9HoAWvAG
- TLSH T1313649482CD7F77199BC0E5C4E1F1F87063D6E8B9B65E82F2FA814D5EB5ABC62098014
- MD5 SHA1 SHA512 SSDEEP TLSH
-
Detects DonutLoader
-
Family: DonutLoader
DonutLoader is a position-independent code that enables in-memory execution of VBScript, JScript, EXE, DLL files and dotNET assemblies.
-
Uses browser remote debugging
Can be used to control the browser and steal sensitive information such as credentials and session cookies.
-
Checks computer location settings
Looks up country code configured in the registry, likely geofence.
-
Executes dropped EXE
-
Loads dropped DLL
-
Accesses Microsoft Outlook profiles
-
Adds Run key to start application
-
Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
-
Executes a VBScript file via the Windows Script Host.
-
Suspicious use of SetThreadContext
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
3JavaScript
1Visual Basic
1Windows Command Shell
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Modify Authentication Process
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Modify Authentication Process
1Steal Web Session Cookie
1Unsecured Credentials
1Credentials In Files
1