Analysis
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max time kernel
300s -
max time network
298s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
31-05-2024 10:27
Behavioral task
behavioral1
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 2 IoCs
Processes:
resource yara_rule behavioral1/memory/1692-1-0x00000000007F0000-0x0000000000818000-memory.dmp family_xworm C:\Users\Admin\AppData\Roaming\XClient.exe 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 3788 powershell.exe 3284 powershell.exe 2704 powershell.exe 2784 powershell.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
rew.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation rew.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 -
Executes dropped EXE 1 IoCs
Processes:
XClient.exepid process 4456 XClient.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
rew.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\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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Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
Processes:
taskmgr.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000 taskmgr.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A taskmgr.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName taskmgr.exe -
Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
taskmgr.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 taskmgr.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString taskmgr.exe -
Modifies registry class 1 IoCs
Processes:
taskmgr.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000_Classes\Local Settings taskmgr.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
powershell.exepowershell.exepowershell.exepowershell.exerew.exetaskmgr.exepid process 3788 powershell.exe 3788 powershell.exe 3284 powershell.exe 3284 powershell.exe 2704 powershell.exe 2704 powershell.exe 2784 powershell.exe 2784 powershell.exe 1692 rew.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
taskmgr.exepid process 4188 taskmgr.exe -
Suspicious use of AdjustPrivilegeToken 10 IoCs
Processes:
rew.exepowershell.exepowershell.exepowershell.exepowershell.exetaskmgr.exeXClient.exedescription pid process Token: SeDebugPrivilege 1692 rew.exe Token: SeDebugPrivilege 3788 powershell.exe Token: SeDebugPrivilege 3284 powershell.exe Token: SeDebugPrivilege 2704 powershell.exe Token: SeDebugPrivilege 2784 powershell.exe Token: SeDebugPrivilege 1692 rew.exe Token: SeDebugPrivilege 4188 taskmgr.exe Token: SeSystemProfilePrivilege 4188 taskmgr.exe Token: SeCreateGlobalPrivilege 4188 taskmgr.exe Token: SeDebugPrivilege 4456 XClient.exe -
Suspicious use of FindShellTrayWindow 64 IoCs
Processes:
taskmgr.exepid process 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe -
Suspicious use of SendNotifyMessage 64 IoCs
Processes:
taskmgr.exepid process 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe 4188 taskmgr.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
rew.exepid process 1692 rew.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
rew.exedescription pid process target process PID 1692 wrote to memory of 3788 1692 rew.exe powershell.exe PID 1692 wrote to memory of 3788 1692 rew.exe powershell.exe PID 1692 wrote to memory of 3284 1692 rew.exe powershell.exe PID 1692 wrote to memory of 3284 1692 rew.exe powershell.exe PID 1692 wrote to memory of 2704 1692 rew.exe powershell.exe PID 1692 wrote to memory of 2704 1692 rew.exe powershell.exe PID 1692 wrote to memory of 2784 1692 rew.exe powershell.exe PID 1692 wrote to memory of 2784 1692 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⤵
- Checks computer location settings
- 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:1692 -
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:3788
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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:3284
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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:2704
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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:2784
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C:\Windows\system32\taskmgr.exe"C:\Windows\system32\taskmgr.exe" /41⤵
- Checks SCSI registry key(s)
- Checks processor information in registry
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:4188
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C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵PID:3928
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C:\Users\Admin\AppData\Roaming\XClient.exe"C:\Users\Admin\AppData\Roaming\XClient.exe"1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4456
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
2KB
MD5d85ba6ff808d9e5444a4b369f5bc2730
SHA131aa9d96590fff6981b315e0b391b575e4c0804a
SHA25684739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
SHA5128c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249
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Filesize
944B
MD56d42b6da621e8df5674e26b799c8e2aa
SHA1ab3ce1327ea1eeedb987ec823d5e0cb146bafa48
SHA2565ab6a1726f425c6d0158f55eb8d81754ddedd51e651aa0a899a29b7a58619c4c
SHA51253faffbda8a835bc1143e894c118c15901a5fd09cfc2224dd2f754c06dc794897315049a579b9a8382d4564f071576045aaaf824019b7139d939152dca38ce29
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Filesize
944B
MD52d06ce10e4e5b9e174b5ebbdad300fad
SHA1bcc1c231e22238cef02ae25331320060ada2f131
SHA25687d1dd56f12a88907ba5aebca8d555443d6f77ed214497277cc8bcd31c669f2c
SHA51238cfbeb59605854ae4fcfae8619a6b26bd916148acfb5636383672a3960b45ca41fed5c241f97465129e92eaf78c4c85dcf258f1ab501a2bf771287ce04f76a7
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Filesize
944B
MD5cfb22e9b9c08bb1cfe944b622eb7adcb
SHA1a299c701fb4da010999e61f9127262c7deb4fd97
SHA256f60461e45422c16638ab514984d3a3b4e1ec8522c224543046a7d8fdf0090af2
SHA51267962f0976a16c4323d14d4f7f6fe23bf1145db115be59b25f8fdfbe49d2d0672ed868ce7d69cb33b790f50f37b1187d5bd64fddfeb20260c88d4c5f75be4a57
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
771B
MD5d15ab7f947b4333bb0ac0b6f94dc7c72
SHA12840ba07457559c358f2ccc08badc0e74a532106
SHA2565ef1713c9a9551c903a41e191bc9a4d59c6ccfc62de55aca0d0f608874d0e8a5
SHA512328f66901cbefcc90e918ce9040088d6b70d7fd5d0d2d269ca292b2f814a76c516bf1ddf98a905f3bf28fd2f44f499562606327bc51b43056eb45177813bc192
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Filesize
137KB
MD56fb74b7167db1e3749bf7d0141cdb6bb
SHA13fba464b23491949ad74d3d549d917284deacadb
SHA25620f4a10545e41b42ac85fff035062ab142a5007e473626ed85c45b2e54402a63
SHA512b291fa76b37a213f6ef9f15ea7c978d2155005c8cffc3e458633256a34dd1d105bc72e6a580d440e338c8198bcfd5fc9d36d989ba52e22faf8b6da4b046f6f01