Analysis
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max time kernel
122s -
max time network
123s -
platform
windows7_x64 -
resource
win7-20240220-en -
resource tags
arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system -
submitted
31-05-2024 12:40
Behavioral task
behavioral1
Sample
XClient.exe
Resource
win7-20240220-en
Behavioral task
behavioral2
Sample
XClient.exe
Resource
win10v2004-20240508-en
General
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Target
XClient.exe
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Size
59KB
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MD5
d172c0a4ae3e8cef6a0a910bde62e195
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SHA1
51139fc633fe81a66c8ed55081f92ec5256bd0bd
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SHA256
94b65da2b5cc3728547f892a46e9c48c5d54477d10ea8e210304593acd3568e7
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SHA512
d82c930a42fd623aeee51007453d201e96110b546f1fb34080fc6d4c1488d71b3828f5f1833d347993444e4d332aa00fbb7b8922fce676d220375470ad0fa467
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SSDEEP
1536:9vv68xQQodoW8YTK6uDkbrfSVxwXSOqQ+k:1vjWQoGJYTK6CkbrfHSOqQ+k
Malware Config
Extracted
xworm
length-desert.gl.at.ply.gg:58023
%AppData%:9
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Install_directory
%AppData%
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install_file
USB.exe
Signatures
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Detect Xworm Payload 4 IoCs
Processes:
resource yara_rule behavioral1/memory/2728-1-0x0000000000950000-0x0000000000966000-memory.dmp family_xworm C:\Users\Admin\AppData\Roaming\9 family_xworm behavioral1/memory/2632-11-0x0000000000170000-0x0000000000186000-memory.dmp family_xworm behavioral1/memory/1564-14-0x0000000001110000-0x0000000001126000-memory.dmp family_xworm -
Drops startup file 2 IoCs
Processes:
XClient.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\9.lnk XClient.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\9.lnk XClient.exe -
Executes dropped EXE 2 IoCs
Processes:
99pid process 2632 9 1564 9 -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
XClient.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Windows\CurrentVersion\Run\9 = "C:\\Users\\Admin\\AppData\\Roaming\\9" 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 use of AdjustPrivilegeToken 4 IoCs
Processes:
XClient.exe99description pid process Token: SeDebugPrivilege 2728 XClient.exe Token: SeDebugPrivilege 2728 XClient.exe Token: SeDebugPrivilege 2632 9 Token: SeDebugPrivilege 1564 9 -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
XClient.exetaskeng.exedescription pid process target process PID 2728 wrote to memory of 2980 2728 XClient.exe schtasks.exe PID 2728 wrote to memory of 2980 2728 XClient.exe schtasks.exe PID 2728 wrote to memory of 2980 2728 XClient.exe schtasks.exe PID 2916 wrote to memory of 2632 2916 taskeng.exe 9 PID 2916 wrote to memory of 2632 2916 taskeng.exe 9 PID 2916 wrote to memory of 2632 2916 taskeng.exe 9 PID 2916 wrote to memory of 1564 2916 taskeng.exe 9 PID 2916 wrote to memory of 1564 2916 taskeng.exe 9 PID 2916 wrote to memory of 1564 2916 taskeng.exe 9 -
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 use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2728 -
C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "9" /tr "C:\Users\Admin\AppData\Roaming\9"2⤵
- Creates scheduled task(s)
PID:2980
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C:\Windows\system32\taskeng.exetaskeng.exe {3EB97015-FDD4-4815-B835-1AD2156F033C} S-1-5-21-2721934792-624042501-2768869379-1000:BISMIZHX\Admin:Interactive:[1]1⤵
- Suspicious use of WriteProcessMemory
PID:2916 -
C:\Users\Admin\AppData\Roaming\9C:\Users\Admin\AppData\Roaming\92⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2632
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C:\Users\Admin\AppData\Roaming\9C:\Users\Admin\AppData\Roaming\92⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1564
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
59KB
MD5d172c0a4ae3e8cef6a0a910bde62e195
SHA151139fc633fe81a66c8ed55081f92ec5256bd0bd
SHA25694b65da2b5cc3728547f892a46e9c48c5d54477d10ea8e210304593acd3568e7
SHA512d82c930a42fd623aeee51007453d201e96110b546f1fb34080fc6d4c1488d71b3828f5f1833d347993444e4d332aa00fbb7b8922fce676d220375470ad0fa467