General
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Target
Sairiss.exe
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Size
1.1MB
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Sample
240925-pat21sxfng
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MD5
de6f7554479d7c833f7441c00f53a0a4
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SHA1
205b9b083f05e4d4e2b9f05971030a4ddbdf034c
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SHA256
8af9363b9c2f60c264f19812b287e61accbdf0c4be10e500645ce760fbe5a32a
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SHA512
5fbfccec89cc21a7efcf184854ed2ca15b068552d1c86babb972ad4f8b2c6a5acbb7a2339e6d6fe0b3f37766e523d6083c2ce41b401b1364f4a459c1ebecfbc5
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SSDEEP
24576:rAM1FHWInxjjPZiHzNAjtIsdE2ajpoRvSNTv/FbpMgS20YX+iXFGKRc+JDke:8MX2In1cXsdEPjs+sR2jrVzRB2e
Static task
static1
Behavioral task
behavioral1
Sample
Sairiss.exe
Resource
win7-20240903-en
Malware Config
Extracted
xworm
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Install_directory
%Userprofile%
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install_file
WindowsUpdate.exe
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pastebin_url
https://pastebin.com/raw/imbvawb9
Targets
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Target
Sairiss.exe
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Size
1.1MB
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MD5
de6f7554479d7c833f7441c00f53a0a4
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SHA1
205b9b083f05e4d4e2b9f05971030a4ddbdf034c
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SHA256
8af9363b9c2f60c264f19812b287e61accbdf0c4be10e500645ce760fbe5a32a
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SHA512
5fbfccec89cc21a7efcf184854ed2ca15b068552d1c86babb972ad4f8b2c6a5acbb7a2339e6d6fe0b3f37766e523d6083c2ce41b401b1364f4a459c1ebecfbc5
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SSDEEP
24576:rAM1FHWInxjjPZiHzNAjtIsdE2ajpoRvSNTv/FbpMgS20YX+iXFGKRc+JDke:8MX2In1cXsdEPjs+sR2jrVzRB2e
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Detect Xworm Payload
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Command and Scripting Interpreter: PowerShell
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Drops startup file
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Executes dropped EXE
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Loads dropped DLL
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Adds Run key to start application
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Legitimate hosting services abused for malware hosting/C2
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Suspicious use of NtSetInformationThreadHideFromDebugger
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MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1