Analysis
- max time kernel
148s - max time network
161s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
03/04/2024, 04:10
General
- Target yes.exe
- Size 81KB
- Sample240403-erqe2sff7t
- SHA256 d2576bc16040874601b4371730e07206214ef2e68c65963aacd90a37502ee75c
Malware Config
Signatures
- Detect Xworm Payload 1 IoCs
- Xworm
Xworm is a remote access trojan written in C#.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious behavior: EnumeratesProcesses 5 IoCs
- Suspicious use of AdjustPrivilegeToken 4 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\yes.exe"C:\Users\Admin\AppData\Local\Temp\yes.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe#cmd2⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe'3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'RegAsm.exe'3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
powershell.exe.log
StartupProfileData-NonInteractive
__PSScriptPolicyTest_rhrnpevz.afh.ps1
memory/1260-79-0x0000000074520000-0x0000000074CD0000-memory.dmp
memory/1260-68-0x000000006F790000-0x000000006F7DC000-memory.dmp
memory/1260-67-0x00000000047B0000-0x00000000047C0000-memory.dmp
memory/1260-56-0x00000000047B0000-0x00000000047C0000-memory.dmp
memory/1260-55-0x0000000074520000-0x0000000074CD0000-memory.dmp
memory/3984-40-0x0000000007230000-0x00000000072D3000-memory.dmp
memory/3984-45-0x0000000007780000-0x0000000007791000-memory.dmp
memory/3984-11-0x00000000055D0000-0x0000000005BF8000-memory.dmp
memory/3984-12-0x0000000005280000-0x00000000052A2000-memory.dmp
memory/3984-13-0x0000000005420000-0x0000000005486000-memory.dmp
memory/3984-9-0x0000000002940000-0x0000000002976000-memory.dmp
memory/3984-14-0x0000000005C70000-0x0000000005CD6000-memory.dmp
memory/3984-24-0x0000000005DE0000-0x0000000006134000-memory.dmp
memory/3984-25-0x0000000006250000-0x000000000626E000-memory.dmp
memory/3984-26-0x00000000062A0000-0x00000000062EC000-memory.dmp
memory/3984-27-0x0000000004F90000-0x0000000004FA0000-memory.dmp
memory/3984-28-0x0000000006820000-0x0000000006852000-memory.dmp
memory/3984-29-0x000000006F790000-0x000000006F7DC000-memory.dmp
memory/3984-39-0x0000000006800000-0x000000000681E000-memory.dmp
memory/3984-8-0x0000000074520000-0x0000000074CD0000-memory.dmp
memory/3984-41-0x0000000007BC0000-0x000000000823A000-memory.dmp
memory/3984-42-0x0000000007580000-0x000000000759A000-memory.dmp
memory/3984-43-0x00000000075F0000-0x00000000075FA000-memory.dmp
memory/3984-44-0x0000000007800000-0x0000000007896000-memory.dmp
memory/3984-10-0x0000000004F90000-0x0000000004FA0000-memory.dmp
memory/3984-53-0x0000000074520000-0x0000000074CD0000-memory.dmp
memory/3984-47-0x00000000077B0000-0x00000000077BE000-memory.dmp
memory/3984-48-0x00000000077C0000-0x00000000077D4000-memory.dmp
memory/3984-49-0x00000000078C0000-0x00000000078DA000-memory.dmp
memory/3984-50-0x00000000078A0000-0x00000000078A8000-memory.dmp
memory/4496-81-0x0000000006B20000-0x00000000070C4000-memory.dmp
memory/4496-7-0x00000000054D0000-0x000000000556C000-memory.dmp
memory/4496-6-0x0000000074520000-0x0000000074CD0000-memory.dmp
memory/4496-3-0x0000000000400000-0x0000000000418000-memory.dmp
memory/4496-80-0x0000000005480000-0x0000000005490000-memory.dmp
memory/4496-46-0x0000000074520000-0x0000000074CD0000-memory.dmp
memory/4496-82-0x00000000069F0000-0x0000000006A82000-memory.dmp
memory/4496-83-0x00000000069E0000-0x00000000069EA000-memory.dmp
memory/4496-84-0x0000000005480000-0x0000000005490000-memory.dmp
memory/5060-0-0x0000000000560000-0x000000000057A000-memory.dmp
memory/5060-5-0x0000000074520000-0x0000000074CD0000-memory.dmp
memory/5060-2-0x0000000004E90000-0x0000000004EA0000-memory.dmp
memory/5060-1-0x0000000074520000-0x0000000074CD0000-memory.dmp