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Resubmissions
24/06/2024, 18:41
240624-xb9svszflq 10Analysis
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max time kernel
142s -
max time network
157s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
24/06/2024, 18:41
Behavioral task
behavioral1
Sample
XClient.exe
Resource
win10v2004-20240226-en
General
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Target
XClient.exe
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Size
77KB
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MD5
64d362a144056d1d694cd6ac91b05853
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SHA1
26ff11d8079cfcbcd030c7b8ff6b468e64fe6646
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SHA256
20a5a326453f45148d45dae9a082cb81e94d8d6bf738b690f3108421428aba19
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SHA512
e3ca6dd9b7610cf56a538ca49ef39e3ac26586a998d838b75bf0e7e3690745c245327591ff129e8d9036e17fccc163177c6df19815874810b75d3c7e53d1af96
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SSDEEP
1536:XwAs1Jl/UONC4QRm4mUHHbPud6Xby/Kbokf38ZeXGWEt2OJoBhQVRDCP:XwAsFcEC4QRjS0by/7kfat2Oi4VJC
Malware Config
Extracted
xworm
66.66.146.74:9511
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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
resource yara_rule behavioral1/memory/1620-1-0x0000000000AB0000-0x0000000000ACA000-memory.dmp family_xworm behavioral1/files/0x0008000000023230-9.dat family_xworm -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation XClient.exe -
Drops startup file 2 IoCs
description 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
pid Process 368 XClient.exe 1268 XClient.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\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.
flow ioc 7 ip-api.com -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 4768 schtasks.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 1620 XClient.exe Token: SeDebugPrivilege 1620 XClient.exe Token: SeDebugPrivilege 368 XClient.exe Token: SeDebugPrivilege 1268 XClient.exe -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 1620 wrote to memory of 4768 1620 XClient.exe 93 PID 1620 wrote to memory of 4768 1620 XClient.exe 93 -
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 use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1620 -
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⤵
- Scheduled Task/Job: Scheduled Task
PID:4768
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4012 --field-trial-handle=2284,i,15722001240173834669,15048020084704567542,262144 --variations-seed-version /prefetch:81⤵PID:4804
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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:368
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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:1268
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
654B
MD52ff39f6c7249774be85fd60a8f9a245e
SHA1684ff36b31aedc1e587c8496c02722c6698c1c4e
SHA256e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced
SHA5121d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1
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Filesize
77KB
MD564d362a144056d1d694cd6ac91b05853
SHA126ff11d8079cfcbcd030c7b8ff6b468e64fe6646
SHA25620a5a326453f45148d45dae9a082cb81e94d8d6bf738b690f3108421428aba19
SHA512e3ca6dd9b7610cf56a538ca49ef39e3ac26586a998d838b75bf0e7e3690745c245327591ff129e8d9036e17fccc163177c6df19815874810b75d3c7e53d1af96