Analysis
- max time kernel
149s - max time network
157s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
05/06/2024, 02:01
General
- Target 9bf1abe182b35bc905bc332b5d025de47e7b4a42ee6998e34ba6d22e01881f50.exe
- Size 498KB
- Sample240605-cfkdjsbg28
- SHA256 9bf1abe182b35bc905bc332b5d025de47e7b4a42ee6998e34ba6d22e01881f50
Malware Config
Extracted
-
xworm
-
wiz.bounceme.net:6000
-
Install_directory
%AppData%
-
install_file
System.exe
-
pastebin_url
https://pastebin.com/raw/ce9Y28X4
Signatures
- Detect Xworm Payload 2 IoCs
- Xworm
Xworm is a remote access trojan written in C#.
- Detects Windows executables referencing non-Windows User-Agents 2 IoCs
- Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Drops startup file 2 IoCs
- Executes dropped EXE 2 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
- Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 7 IoCs
- Suspicious use of AdjustPrivilegeToken 7 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 12 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\9bf1abe182b35bc905bc332b5d025de47e7b4a42ee6998e34ba6d22e01881f50.exe"C:\Users\Admin\AppData\Local\Temp\9bf1abe182b35bc905bc332b5d025de47e7b4a42ee6998e34ba6d22e01881f50.exe"1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- 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:\Users\Admin\AppData\Local\Temp\9bf1abe182b35bc905bc332b5d025de47e7b4a42ee6998e34ba6d22e01881f50.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- 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 '9bf1abe182b35bc905bc332b5d025de47e7b4a42ee6998e34ba6d22e01881f50.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- 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 -ExclusionPath 'C:\Users\Admin\AppData\Roaming\9bf1abe182b35bc905bc332b5d025de47e7b4a42ee6998e34ba6d22e01881f50.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "9bf1abe182b35bc905bc332b5d025de47e7b4a42ee6998e34ba6d22e01881f50" /tr "C:\Users\Admin\AppData\Roaming\9bf1abe182b35bc905bc332b5d025de47e7b4a42ee6998e34ba6d22e01881f50.exe"2⤵
- Creates scheduled task(s)
-
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C:\Users\Admin\AppData\Roaming\9bf1abe182b35bc905bc332b5d025de47e7b4a42ee6998e34ba6d22e01881f50.exeC:\Users\Admin\AppData\Roaming\9bf1abe182b35bc905bc332b5d025de47e7b4a42ee6998e34ba6d22e01881f50.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
-
C:\Users\Admin\AppData\Roaming\9bf1abe182b35bc905bc332b5d025de47e7b4a42ee6998e34ba6d22e01881f50.exeC:\Users\Admin\AppData\Roaming\9bf1abe182b35bc905bc332b5d025de47e7b4a42ee6998e34ba6d22e01881f50.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
9bf1abe182b35bc905bc332b5d025de47e7b4a42ee6998e34ba6d22e01881f50.exe.log
powershell.exe.log
StartupProfileData-NonInteractive
StartupProfileData-NonInteractive
__PSScriptPolicyTest_5vesxjhi.gpa.ps1
9bf1abe182b35bc905bc332b5d025de47e7b4a42ee6998e34ba6d22e01881f50.exe
memory/1404-41-0x00000000079B0000-0x000000000802A000-memory.dmp
memory/1404-46-0x00000000075A0000-0x00000000075AE000-memory.dmp
memory/1404-8-0x0000000074C80000-0x0000000075430000-memory.dmp
memory/1404-9-0x0000000074C80000-0x0000000075430000-memory.dmp
memory/1404-10-0x0000000005160000-0x0000000005788000-memory.dmp
memory/1404-11-0x00000000057C0000-0x00000000057E2000-memory.dmp
memory/1404-12-0x00000000058E0000-0x0000000005946000-memory.dmp
memory/1404-52-0x0000000074C80000-0x0000000075430000-memory.dmp
memory/1404-22-0x0000000005B70000-0x0000000005EC4000-memory.dmp
memory/1404-23-0x0000000006030000-0x000000000604E000-memory.dmp
memory/1404-24-0x0000000006060000-0x00000000060AC000-memory.dmp
memory/1404-25-0x0000000006610000-0x0000000006642000-memory.dmp
memory/1404-26-0x000000006F970000-0x000000006F9BC000-memory.dmp
memory/1404-37-0x0000000074C80000-0x0000000075430000-memory.dmp
memory/1404-36-0x0000000006650000-0x000000000666E000-memory.dmp
memory/1404-39-0x0000000007230000-0x00000000072D3000-memory.dmp
memory/1404-38-0x0000000074C80000-0x0000000075430000-memory.dmp
memory/1404-40-0x0000000074C80000-0x0000000075430000-memory.dmp
memory/1404-49-0x0000000007690000-0x0000000007698000-memory.dmp
memory/1404-42-0x0000000007370000-0x000000000738A000-memory.dmp
memory/1404-43-0x00000000073E0000-0x00000000073EA000-memory.dmp
memory/1404-44-0x00000000075F0000-0x0000000007686000-memory.dmp
memory/1404-45-0x0000000007570000-0x0000000007581000-memory.dmp
memory/1404-7-0x0000000002710000-0x0000000002746000-memory.dmp
memory/1404-47-0x00000000075B0000-0x00000000075C4000-memory.dmp
memory/1404-48-0x00000000076B0000-0x00000000076CA000-memory.dmp
memory/3104-90-0x000000006F970000-0x000000006F9BC000-memory.dmp
memory/4440-68-0x000000006F970000-0x000000006F9BC000-memory.dmp
memory/4440-79-0x0000000074C80000-0x0000000075430000-memory.dmp
memory/4440-54-0x0000000074C80000-0x0000000075430000-memory.dmp
memory/4440-55-0x0000000074C80000-0x0000000075430000-memory.dmp
memory/4440-56-0x0000000074C80000-0x0000000075430000-memory.dmp
memory/4440-57-0x0000000005650000-0x00000000059A4000-memory.dmp
memory/4460-6-0x0000000005E50000-0x0000000005EB6000-memory.dmp
memory/4460-0-0x0000000074C8E000-0x0000000074C8F000-memory.dmp
memory/4460-5-0x0000000074C80000-0x0000000075430000-memory.dmp
memory/4460-4-0x0000000005EF0000-0x0000000005F8C000-memory.dmp
memory/4460-3-0x0000000005C70000-0x0000000005C8C000-memory.dmp
memory/4460-102-0x0000000074C8E000-0x0000000074C8F000-memory.dmp
memory/4460-104-0x0000000074C80000-0x0000000075430000-memory.dmp
memory/4460-2-0x0000000005A00000-0x0000000005A92000-memory.dmp
memory/4460-111-0x00000000078E0000-0x0000000007E84000-memory.dmp
memory/4460-112-0x0000000007780000-0x000000000778A000-memory.dmp
memory/4460-113-0x0000000007770000-0x000000000777E000-memory.dmp
memory/4460-1-0x0000000000FF0000-0x0000000001070000-memory.dmp