Analysis
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max time kernel
118s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
31-05-2024 12:39
Behavioral task
behavioral1
Sample
rew.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
rew.exe
Resource
win10v2004-20240508-en
General
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Target
rew.exe
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Size
137KB
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MD5
6fb74b7167db1e3749bf7d0141cdb6bb
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SHA1
3fba464b23491949ad74d3d549d917284deacadb
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SHA256
20f4a10545e41b42ac85fff035062ab142a5007e473626ed85c45b2e54402a63
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SHA512
b291fa76b37a213f6ef9f15ea7c978d2155005c8cffc3e458633256a34dd1d105bc72e6a580d440e338c8198bcfd5fc9d36d989ba52e22faf8b6da4b046f6f01
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SSDEEP
3072:fTMF4B4as+b9GCF+O4NGJUrXni52F47927ogw5az:umRbYgUrXni2rw
Malware Config
Extracted
xworm
127.0.0.1:4328
20.ip.gl.ply.gg:4328
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Install_directory
%AppData%
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install_file
XClient.exe
Signatures
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Detect Xworm Payload 1 IoCs
Processes:
resource yara_rule behavioral1/memory/1176-1-0x0000000000280000-0x00000000002A8000-memory.dmp family_xworm -
Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
Processes:
powershell.exepowershell.exepowershell.exepowershell.exepid process 2004 powershell.exe 1352 powershell.exe 2604 powershell.exe 2612 powershell.exe -
Drops startup file 2 IoCs
Processes:
rew.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk rew.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk rew.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
rew.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe" rew.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 5 IoCs
Processes:
powershell.exepowershell.exepowershell.exepowershell.exerew.exepid process 1352 powershell.exe 2604 powershell.exe 2612 powershell.exe 2004 powershell.exe 1176 rew.exe -
Suspicious use of AdjustPrivilegeToken 6 IoCs
Processes:
rew.exepowershell.exepowershell.exepowershell.exepowershell.exedescription pid process Token: SeDebugPrivilege 1176 rew.exe Token: SeDebugPrivilege 1352 powershell.exe Token: SeDebugPrivilege 2604 powershell.exe Token: SeDebugPrivilege 2612 powershell.exe Token: SeDebugPrivilege 2004 powershell.exe Token: SeDebugPrivilege 1176 rew.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
rew.exepid process 1176 rew.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
rew.exedescription pid process target process PID 1176 wrote to memory of 1352 1176 rew.exe powershell.exe PID 1176 wrote to memory of 1352 1176 rew.exe powershell.exe PID 1176 wrote to memory of 1352 1176 rew.exe powershell.exe PID 1176 wrote to memory of 2604 1176 rew.exe powershell.exe PID 1176 wrote to memory of 2604 1176 rew.exe powershell.exe PID 1176 wrote to memory of 2604 1176 rew.exe powershell.exe PID 1176 wrote to memory of 2612 1176 rew.exe powershell.exe PID 1176 wrote to memory of 2612 1176 rew.exe powershell.exe PID 1176 wrote to memory of 2612 1176 rew.exe powershell.exe PID 1176 wrote to memory of 2004 1176 rew.exe powershell.exe PID 1176 wrote to memory of 2004 1176 rew.exe powershell.exe PID 1176 wrote to memory of 2004 1176 rew.exe powershell.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\rew.exe"C:\Users\Admin\AppData\Local\Temp\rew.exe"1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1176 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\rew.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1352
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'rew.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2604
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\XClient.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2612
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2004
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms
Filesize7KB
MD54802604145abe0b423db5597576793e4
SHA1e5ad537bc0a27aa56d39163ce7bba27c53d13dab
SHA256c2c74c3d60d4cb3660eb142129b6a67ff028d4d43d5ee37ddd68d86d49d6f165
SHA5128dcadb2b64ced44a6b0efd6391257221303c0df7b8860c42184c4ff8a656a9fc140a091525d37161c48b40ffbc8a6cde81bae05243e4cf6d6be4985c93f3bab9
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MD5
d41d8cd98f00b204e9800998ecf8427e
SHA1da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e