Analysis
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max time kernel
298s -
max time network
295s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
23-03-2024 19:36
Behavioral task
behavioral1
Sample
XClient.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
XClient.exe
Resource
win10v2004-20240226-en
General
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Target
XClient.exe
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Size
86KB
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MD5
b02c9848a5f2039383868c3e100783dd
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SHA1
e7d02d1bb49590d54fa2d37345e86ae7a1b6d2cc
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SHA256
34aa9bad44607ef50b9327ae1775d6048f8954b2f834ba096a2a85b9a0c0222d
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SHA512
7cd95379c2b1b9155cbff3872aa318bcf0bb5edfa5dc3457600c6e52c48e78097a82c66bdadfc3db0f560d2a1c850454e96dee3325b59cde5ebb2abd997d7b76
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SSDEEP
1536:tJqyxozIQOT5HjMlBkJqa8s94Utb/GHZe3xRTyPGbRK1wyN6OGOeLj6fZl:DqAQOT5DMoJFb+UxRTldxOkmf7
Malware Config
Extracted
xworm
Thecoolboi991-51392.portmap.io:51392
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Install_directory
%AppData%
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install_file
XClient.exe
Signatures
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Detect Xworm Payload 7 IoCs
Processes:
resource yara_rule behavioral1/memory/2192-0-0x0000000001380000-0x000000000139C000-memory.dmp family_xworm C:\Users\Admin\AppData\Roaming\XClient.exe family_xworm behavioral1/memory/1332-61-0x0000000000CD0000-0x0000000000CEC000-memory.dmp family_xworm behavioral1/memory/1020-92-0x0000000000260000-0x000000000027C000-memory.dmp family_xworm behavioral1/memory/1492-96-0x0000000000250000-0x000000000026C000-memory.dmp family_xworm behavioral1/memory/2004-100-0x0000000000080000-0x000000000009C000-memory.dmp family_xworm behavioral1/memory/3068-104-0x0000000000F70000-0x0000000000F8C000-memory.dmp family_xworm -
StormKitty
StormKitty is an open source info stealer written in C#.
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StormKitty payload 1 IoCs
Processes:
resource yara_rule behavioral1/memory/2192-66-0x000000001D280000-0x000000001D39E000-memory.dmp family_stormkitty -
Drops startup file 2 IoCs
Processes:
XClient.exedescription ioc process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk XClient.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk XClient.exe -
Executes dropped EXE 5 IoCs
Processes:
XClient.exeXClient.exeXClient.exeXClient.exeXClient.exepid process 1332 XClient.exe 1020 XClient.exe 1492 XClient.exe 2004 XClient.exe 3068 XClient.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
XClient.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe" XClient.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 4 ip-api.com -
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: AddClipboardFormatListener 1 IoCs
Processes:
XClient.exepid process 2192 XClient.exe -
Suspicious behavior: EnumeratesProcesses 5 IoCs
Processes:
powershell.exepowershell.exepowershell.exepowershell.exeXClient.exepid process 2416 powershell.exe 2692 powershell.exe 312 powershell.exe 2948 powershell.exe 2192 XClient.exe -
Suspicious use of AdjustPrivilegeToken 11 IoCs
Processes:
XClient.exepowershell.exepowershell.exepowershell.exepowershell.exeXClient.exeXClient.exeXClient.exeXClient.exeXClient.exedescription pid process Token: SeDebugPrivilege 2192 XClient.exe Token: SeDebugPrivilege 2416 powershell.exe Token: SeDebugPrivilege 2692 powershell.exe Token: SeDebugPrivilege 312 powershell.exe Token: SeDebugPrivilege 2948 powershell.exe Token: SeDebugPrivilege 2192 XClient.exe Token: SeDebugPrivilege 1332 XClient.exe Token: SeDebugPrivilege 1020 XClient.exe Token: SeDebugPrivilege 1492 XClient.exe Token: SeDebugPrivilege 2004 XClient.exe Token: SeDebugPrivilege 3068 XClient.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
XClient.exepid process 2192 XClient.exe -
Suspicious use of WriteProcessMemory 30 IoCs
Processes:
XClient.exetaskeng.exedescription pid process target process PID 2192 wrote to memory of 2416 2192 XClient.exe powershell.exe PID 2192 wrote to memory of 2416 2192 XClient.exe powershell.exe PID 2192 wrote to memory of 2416 2192 XClient.exe powershell.exe PID 2192 wrote to memory of 2692 2192 XClient.exe powershell.exe PID 2192 wrote to memory of 2692 2192 XClient.exe powershell.exe PID 2192 wrote to memory of 2692 2192 XClient.exe powershell.exe PID 2192 wrote to memory of 312 2192 XClient.exe powershell.exe PID 2192 wrote to memory of 312 2192 XClient.exe powershell.exe PID 2192 wrote to memory of 312 2192 XClient.exe powershell.exe PID 2192 wrote to memory of 2948 2192 XClient.exe powershell.exe PID 2192 wrote to memory of 2948 2192 XClient.exe powershell.exe PID 2192 wrote to memory of 2948 2192 XClient.exe powershell.exe PID 2192 wrote to memory of 956 2192 XClient.exe schtasks.exe PID 2192 wrote to memory of 956 2192 XClient.exe schtasks.exe PID 2192 wrote to memory of 956 2192 XClient.exe schtasks.exe PID 2656 wrote to memory of 1332 2656 taskeng.exe XClient.exe PID 2656 wrote to memory of 1332 2656 taskeng.exe XClient.exe PID 2656 wrote to memory of 1332 2656 taskeng.exe XClient.exe PID 2656 wrote to memory of 1020 2656 taskeng.exe XClient.exe PID 2656 wrote to memory of 1020 2656 taskeng.exe XClient.exe PID 2656 wrote to memory of 1020 2656 taskeng.exe XClient.exe PID 2656 wrote to memory of 1492 2656 taskeng.exe XClient.exe PID 2656 wrote to memory of 1492 2656 taskeng.exe XClient.exe PID 2656 wrote to memory of 1492 2656 taskeng.exe XClient.exe PID 2656 wrote to memory of 2004 2656 taskeng.exe XClient.exe PID 2656 wrote to memory of 2004 2656 taskeng.exe XClient.exe PID 2656 wrote to memory of 2004 2656 taskeng.exe XClient.exe PID 2656 wrote to memory of 3068 2656 taskeng.exe XClient.exe PID 2656 wrote to memory of 3068 2656 taskeng.exe XClient.exe PID 2656 wrote to memory of 3068 2656 taskeng.exe XClient.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⤵
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2192 -
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⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2416 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2692 -
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⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:312 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2948 -
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:956
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C:\Windows\system32\taskeng.exetaskeng.exe {25C432BE-B95B-401A-8B5E-74C14044CC34} S-1-5-21-2297530677-1229052932-2803917579-1000:HKULBIBU\Admin:Interactive:[1]1⤵
- Suspicious use of WriteProcessMemory
PID:2656 -
C:\Users\Admin\AppData\Roaming\XClient.exeC:\Users\Admin\AppData\Roaming\XClient.exe2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1332 -
C:\Users\Admin\AppData\Roaming\XClient.exeC:\Users\Admin\AppData\Roaming\XClient.exe2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1020 -
C:\Users\Admin\AppData\Roaming\XClient.exeC:\Users\Admin\AppData\Roaming\XClient.exe2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1492 -
C:\Users\Admin\AppData\Roaming\XClient.exeC:\Users\Admin\AppData\Roaming\XClient.exe2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2004 -
C:\Users\Admin\AppData\Roaming\XClient.exeC:\Users\Admin\AppData\Roaming\XClient.exe2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3068
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
MD5590226554669e91562288e98d3b4de22
SHA1c72026d9293a708ab808e70157f68bf4371859e0
SHA2563bba6848215425ebeb0a60b0c4b764b4ccadbef0125e6f0b7039bfbe0cf44d31
SHA512b51549660b9de0a17528bf7da8f78716db7b86afe24902b00c913b1df5df15a4f0519359ef5931e51512c7f513f8a69a4be0ac2ab138165392df692b6a114554
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Filesize
86KB
MD5b02c9848a5f2039383868c3e100783dd
SHA1e7d02d1bb49590d54fa2d37345e86ae7a1b6d2cc
SHA25634aa9bad44607ef50b9327ae1775d6048f8954b2f834ba096a2a85b9a0c0222d
SHA5127cd95379c2b1b9155cbff3872aa318bcf0bb5edfa5dc3457600c6e52c48e78097a82c66bdadfc3db0f560d2a1c850454e96dee3325b59cde5ebb2abd997d7b76
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MD5
d41d8cd98f00b204e9800998ecf8427e
SHA1da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e