Analysis
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max time kernel
142s -
max time network
136s -
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 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 behavioral2/memory/2284-1-0x00000000005A0000-0x00000000005C8000-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 3512 powershell.exe 3756 powershell.exe 464 powershell.exe 3348 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-1-5-21-2539840389-1261165778-1087677076-1000\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 -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
rew.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\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 9 IoCs
Processes:
powershell.exepowershell.exepowershell.exepowershell.exerew.exepid process 3512 powershell.exe 3512 powershell.exe 3756 powershell.exe 3756 powershell.exe 464 powershell.exe 464 powershell.exe 3348 powershell.exe 3348 powershell.exe 2284 rew.exe -
Suspicious use of AdjustPrivilegeToken 6 IoCs
Processes:
rew.exepowershell.exepowershell.exepowershell.exepowershell.exedescription pid process Token: SeDebugPrivilege 2284 rew.exe Token: SeDebugPrivilege 3512 powershell.exe Token: SeDebugPrivilege 3756 powershell.exe Token: SeDebugPrivilege 464 powershell.exe Token: SeDebugPrivilege 3348 powershell.exe Token: SeDebugPrivilege 2284 rew.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
rew.exepid process 2284 rew.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
rew.exedescription pid process target process PID 2284 wrote to memory of 3512 2284 rew.exe powershell.exe PID 2284 wrote to memory of 3512 2284 rew.exe powershell.exe PID 2284 wrote to memory of 3756 2284 rew.exe powershell.exe PID 2284 wrote to memory of 3756 2284 rew.exe powershell.exe PID 2284 wrote to memory of 464 2284 rew.exe powershell.exe PID 2284 wrote to memory of 464 2284 rew.exe powershell.exe PID 2284 wrote to memory of 3348 2284 rew.exe powershell.exe PID 2284 wrote to memory of 3348 2284 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:2284 -
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:3512
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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:3756
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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:464
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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:3348
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
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
MD57e3dba9896e2a6fc782ff3f38f7174a7
SHA1a6277b46ae1cf2c66f6f79656eb5ec48c0ffe601
SHA25634bf96a7a541eebcfd65e706649affeb64da710f89afa2386cc38714338c010d
SHA512722c6778f5853fb8c12cb17ba443ce03b654d163dd39f8a1a54b89cc067d44dc8b536c90d2fae1805aea27e731056c0749264a1229538b1b17e019d9613affc1
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Filesize
944B
MD504114c0529b116bf66d764ff6a5a8fe3
SHA10caeff17d1b2190f76c9bf539105f6c40c92bd14
SHA256fd7092b4e273314186bad6ce71aa4cd69450736b6ec6cc746868997ff82a7532
SHA5126a718c330824346606ef24f71cca6be0bfafc626b1d2b060b36e919ab07f3d6a345f56cace8a5a84ffbe2183976eb197842c9fd2f3e3b8c8dd307057d59d6f26
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82