Analysis
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max time kernel
139s -
max time network
143s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
26-05-2024 12:17
Behavioral task
behavioral1
Sample
XClient.exe
Resource
win7-20240215-en
Behavioral task
behavioral2
Sample
XClient.exe
Resource
win10v2004-20240508-en
General
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Target
XClient.exe
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Size
39KB
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MD5
66f5cca568b2b83c23a69295ad2c643b
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SHA1
b822f0bcded0f587413d84f27eb2f5fdcdb48304
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SHA256
971294811a8fd3c967958db073238a75573ea1db5749b8153e5f684b27f99da6
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SHA512
c8bf4acc4644b614715eeaf4cda10ba100afeceaab0f7b7cb627f1c6f7676308c0c73e7dbbe6833ec3da1f9c10616e2c28a9ba4fc88e180ff3e0123071c50469
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SSDEEP
768:VG7+qmT8ztyh6pwDYvCL2v6hCuuJf27iJ1fFWPG9/hL6OOwhnjibH:4fmT8ztyh6pwDnKwCuuJfBFv9/hL6OO3
Malware Config
Extracted
xworm
5.0
127.0.0.1:54921
Zv7fhTadtKHCA29x
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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 behavioral2/memory/636-1-0x0000000000CC0000-0x0000000000CD0000-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 2028 powershell.exe 1608 powershell.exe 2128 powershell.exe 4072 powershell.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
XClient.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation XClient.exe -
Drops startup file 2 IoCs
Processes:
XClient.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk XClient.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk XClient.exe -
Executes dropped EXE 2 IoCs
Processes:
XClient.exeXClient.exepid process 1996 XClient.exe 3812 XClient.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
XClient.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" XClient.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 9 IoCs
Processes:
powershell.exepowershell.exepowershell.exepowershell.exeXClient.exepid process 4072 powershell.exe 4072 powershell.exe 2028 powershell.exe 2028 powershell.exe 1608 powershell.exe 1608 powershell.exe 2128 powershell.exe 2128 powershell.exe 636 XClient.exe -
Suspicious use of AdjustPrivilegeToken 8 IoCs
Processes:
XClient.exepowershell.exepowershell.exepowershell.exepowershell.exeXClient.exeXClient.exedescription pid process Token: SeDebugPrivilege 636 XClient.exe Token: SeDebugPrivilege 4072 powershell.exe Token: SeDebugPrivilege 2028 powershell.exe Token: SeDebugPrivilege 1608 powershell.exe Token: SeDebugPrivilege 2128 powershell.exe Token: SeDebugPrivilege 636 XClient.exe Token: SeDebugPrivilege 1996 XClient.exe Token: SeDebugPrivilege 3812 XClient.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
XClient.exepid process 636 XClient.exe -
Suspicious use of WriteProcessMemory 10 IoCs
Processes:
XClient.exedescription pid process target process PID 636 wrote to memory of 4072 636 XClient.exe powershell.exe PID 636 wrote to memory of 4072 636 XClient.exe powershell.exe PID 636 wrote to memory of 2028 636 XClient.exe powershell.exe PID 636 wrote to memory of 2028 636 XClient.exe powershell.exe PID 636 wrote to memory of 1608 636 XClient.exe powershell.exe PID 636 wrote to memory of 1608 636 XClient.exe powershell.exe PID 636 wrote to memory of 2128 636 XClient.exe powershell.exe PID 636 wrote to memory of 2128 636 XClient.exe powershell.exe PID 636 wrote to memory of 2260 636 XClient.exe schtasks.exe PID 636 wrote to memory of 2260 636 XClient.exe schtasks.exe -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Users\Admin\AppData\Local\Temp\XClient.exe"C:\Users\Admin\AppData\Local\Temp\XClient.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:636 -
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\XClient.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4072
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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:2028
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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:1608
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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:2128
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C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XClient" /tr "C:\Users\Admin\AppData\Roaming\XClient.exe"2⤵
- Creates scheduled task(s)
PID:2260
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C:\Users\Admin\AppData\Roaming\XClient.exeC:\Users\Admin\AppData\Roaming\XClient.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1996
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C:\Users\Admin\AppData\Roaming\XClient.exeC:\Users\Admin\AppData\Roaming\XClient.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3812
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
654B
MD52ff39f6c7249774be85fd60a8f9a245e
SHA1684ff36b31aedc1e587c8496c02722c6698c1c4e
SHA256e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced
SHA5121d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1
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Filesize
2KB
MD5d85ba6ff808d9e5444a4b369f5bc2730
SHA131aa9d96590fff6981b315e0b391b575e4c0804a
SHA25684739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
SHA5128c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249
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Filesize
944B
MD5a8e8360d573a4ff072dcc6f09d992c88
SHA13446774433ceaf0b400073914facab11b98b6807
SHA256bf5e284e8f95122bf75ead61c7e2b40f55c96742b05330b5b1cb7915991df13b
SHA5124ee5167643d82082f57c42616007ef9be57f43f9731921bdf7bca611a914724ad94072d3c8f5b130fa54129e5328ccdebf37ba74339c37deb53e79df5cdf0dbe
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Filesize
944B
MD5b3bc9ca267ea2969eb6201d77e58560c
SHA178f83a443aa1ca235edcab2da9e2fda6fecc1da4
SHA2567ea18b6f900f2c30a5c34845d62d4fe9fc1f11e40714b3dbd69592cbfb5dc695
SHA5128cc70e4f88f3d9f59beec22dafdb403144f7f390250205e08279a2f8e01e783af44ae31aa4a8a7ea05865b05303ac5e5048f7fb44488be538d9701b6195e9b28
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Filesize
944B
MD5feea7dfb5c45a625a0dc282bc60887ad
SHA171d5d2f1f6d74e57459d33fbac1291fd2d30b8ad
SHA2569572f297f0cd0c5add8601146b91c875ebc9492f0531414961068274bc9ddfd7
SHA512fe97a0a83274d9e6b40c80cf4ad46dbb1bef0cbe94e29f50fd3fe1b800763581b76f3d26673f15f617e13e9ef0019b01cde0342cef16760eae7842e6ab5aa656
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
39KB
MD566f5cca568b2b83c23a69295ad2c643b
SHA1b822f0bcded0f587413d84f27eb2f5fdcdb48304
SHA256971294811a8fd3c967958db073238a75573ea1db5749b8153e5f684b27f99da6
SHA512c8bf4acc4644b614715eeaf4cda10ba100afeceaab0f7b7cb627f1c6f7676308c0c73e7dbbe6833ec3da1f9c10616e2c28a9ba4fc88e180ff3e0123071c50469