General
- Target WindowsOptimum_installer.exe
- Size 39KB
- Sample260809-r1eq5agn6v
- SHA256 e6a01d1af2c068fa403578ca3ea4c57b2748717d6daada3f9cc561cede2c1155
- MD5 0dd0feb1de4ecdda98d864ffa2a222ce
- SHA1 33343f7f570cdabe0fffbfcb5e15483303dc48c1
- SHA512 39efc8d362f9fa2e51f9fb714707f5d590900df874564ca2b8271a79632ed552f66c2719b9681536f5c28bb8194015a73eb37bbc07b7c98bfbfc69b967a282a5
- SSDEEP 768:/U0LIQRRYM/QjHFKuu3amxHpufFWPr90xE8e6POwhfaQAL:BL3fF/GHFKuu3am5EFS90xE8e6POw10
- TLSH T1C3035C48BBD08221D9ED7FF569B3564B4B31F6039A13D74E0CE4829A1B676D4CE803E6
- MD5 SHA1 SHA512 SSDEEP TLSH
Behavioral task
behavioral1
Sample
WindowsOptimum_installer.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
WindowsOptimum_installer.exe
Resource
win11ltsc2024-20260709-en
Malware Config
Extracted
-
xworm
-
5.0
-
0.tcp.ngrok.io:28676
-
dZAiTvJBc0j8c3NR
-
Install_directory
%AppData%
-
install_file
USB.exe
Targets
-
- Target WindowsOptimum_installer.exe
- Size 39KB
- SHA256 e6a01d1af2c068fa403578ca3ea4c57b2748717d6daada3f9cc561cede2c1155
- MD5 0dd0feb1de4ecdda98d864ffa2a222ce
- SHA1 33343f7f570cdabe0fffbfcb5e15483303dc48c1
- SHA512 39efc8d362f9fa2e51f9fb714707f5d590900df874564ca2b8271a79632ed552f66c2719b9681536f5c28bb8194015a73eb37bbc07b7c98bfbfc69b967a282a5
- SSDEEP 768:/U0LIQRRYM/QjHFKuu3amxHpufFWPr90xE8e6POwhfaQAL:BL3fF/GHFKuu3am5EFS90xE8e6POw10
- TLSH T1C3035C48BBD08221D9ED7FF569B3564B4B31F6039A13D74E0CE4829A1B676D4CE803E6
- MD5 SHA1 SHA512 SSDEEP TLSH
-
Detect Xworm Payload
-
Command and Scripting Interpreter: PowerShell
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
-
Checks computer location settings
Looks up country code configured in the registry, likely geofence.
-
Creates a file in the Startup directory
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.
-
Executes dropped EXE
-
Adds Run key to start application
-
Contacts third-party web service commonly abused for C2
Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
2PowerShell
1Windows Command Shell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
2Scheduled Task/Job
1Scheduled Task
1