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Analysis
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max time kernel
114s -
max time network
114s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
08/11/2024, 17:10
Behavioral task
behavioral1
Sample
7212825fd674cedb58ad3e6f72b312158c491386cc36b745cc04ad2617427e12N.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
7212825fd674cedb58ad3e6f72b312158c491386cc36b745cc04ad2617427e12N.exe
Resource
win10v2004-20241007-en
General
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Target
7212825fd674cedb58ad3e6f72b312158c491386cc36b745cc04ad2617427e12N.exe
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Size
66KB
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MD5
2b494d570e8555cd6dbca8dadae59840
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SHA1
c59544f6f3a027887f0e4b0cccce87515ba3950f
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SHA256
7212825fd674cedb58ad3e6f72b312158c491386cc36b745cc04ad2617427e12
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SHA512
fe8ca241a512b55758e47e8962bfa1d3d1017559e199d21cbf07afc830d3460a9b6d0f868bfa7ea59979d254c6a29e4d18cf9ae25a6e5b7726a7eb514eb6ea5a
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SSDEEP
1536:iKQYa5VddJ8rYtvAq9dAfkb15LU3v2D4oD0l8laOEeVHN:iKQYa5DdyEAq9d6kb15LU3A4ovaOEe5N
Malware Config
Extracted
xworm
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Install_directory
%AppData%
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install_file
XClient.exe
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pastebin_url
https://pastebin.com/raw/H3wFXmEi
Signatures
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Detect Xworm Payload 2 IoCs
resource yara_rule behavioral2/memory/2740-1-0x0000000000020000-0x0000000000036000-memory.dmp family_xworm behavioral2/files/0x000f000000023a3f-8.dat family_xworm -
Xworm family
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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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation 7212825fd674cedb58ad3e6f72b312158c491386cc36b745cc04ad2617427e12N.exe -
Drops startup file 2 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk 7212825fd674cedb58ad3e6f72b312158c491386cc36b745cc04ad2617427e12N.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk 7212825fd674cedb58ad3e6f72b312158c491386cc36b745cc04ad2617427e12N.exe -
Executes dropped EXE 2 IoCs
pid Process 4252 XClient.exe 4020 XClient.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe" 7212825fd674cedb58ad3e6f72b312158c491386cc36b745cc04ad2617427e12N.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
flow ioc 13 pastebin.com 14 pastebin.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 1176 schtasks.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 2740 7212825fd674cedb58ad3e6f72b312158c491386cc36b745cc04ad2617427e12N.exe Token: SeDebugPrivilege 4252 XClient.exe Token: SeDebugPrivilege 4020 XClient.exe -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 2740 wrote to memory of 1176 2740 7212825fd674cedb58ad3e6f72b312158c491386cc36b745cc04ad2617427e12N.exe 91 PID 2740 wrote to memory of 1176 2740 7212825fd674cedb58ad3e6f72b312158c491386cc36b745cc04ad2617427e12N.exe 91 -
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\7212825fd674cedb58ad3e6f72b312158c491386cc36b745cc04ad2617427e12N.exe"C:\Users\Admin\AppData\Local\Temp\7212825fd674cedb58ad3e6f72b312158c491386cc36b745cc04ad2617427e12N.exe"1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2740 -
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:1176
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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:4252
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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:4020
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
66KB
MD52b494d570e8555cd6dbca8dadae59840
SHA1c59544f6f3a027887f0e4b0cccce87515ba3950f
SHA2567212825fd674cedb58ad3e6f72b312158c491386cc36b745cc04ad2617427e12
SHA512fe8ca241a512b55758e47e8962bfa1d3d1017559e199d21cbf07afc830d3460a9b6d0f868bfa7ea59979d254c6a29e4d18cf9ae25a6e5b7726a7eb514eb6ea5a