Analysis
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max time kernel
361s -
max time network
1596s -
platform
windows10-1703_x64 -
resource
win10-20240404-en -
resource tags
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submitted
18-05-2024 15:47
General
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Target
05072a7ec455fdf0977f69d49dcaaf012c403c9d39861fa2216eae19c160527f.exe
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Size
1.4MB
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MD5
0ada88218b67a313a4f5ab0062fbc4e6
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SHA1
15dfcef932d666fdc7501bcee357ec2aabfcfdee
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SHA256
05072a7ec455fdf0977f69d49dcaaf012c403c9d39861fa2216eae19c160527f
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SHA512
0b217e5aa8b17d347dbb05507cb5cf179328aad593fb65a8083ca8c300de4901eb55e6c8e971ce3280f50ceefd327332cfafde0280e09044d8da1dc8e20a49ed
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SSDEEP
24576:J6w15zVAFj5WEx9+22sHFXVYmLmYy+vz236ZSV8BGxon3sgGhzl1KsIVy:QsV85WU9+ElYmyZMz23sSyBGdgelIsj
Malware Config
Signatures
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Modifies WinLogon for persistence 2 TTPs 1 IoCs
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UAC bypass 3 TTPs 1 IoCs
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Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Renames multiple (95) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Disables Task Manager via registry modification
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Checks whether UAC is enabled 1 TTPs 2 IoCs
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Drops desktop.ini file(s) 7 IoCs
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Modifies WinLogon 2 TTPs 1 IoCs
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Sets desktop wallpaper using registry 2 TTPs 1 IoCs
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Drops file in Program Files directory 2 IoCs
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
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Suspicious use of AdjustPrivilegeToken 46 IoCs
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Suspicious use of WriteProcessMemory 27 IoCs
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System policy modification 1 TTPs 1 IoCs
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Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
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C:\Users\Admin\AppData\Local\Temp\05072a7ec455fdf0977f69d49dcaaf012c403c9d39861fa2216eae19c160527f.exe"C:\Users\Admin\AppData\Local\Temp\05072a7ec455fdf0977f69d49dcaaf012c403c9d39861fa2216eae19c160527f.exe"1⤵
- Modifies WinLogon for persistence
- UAC bypass
- Checks whether UAC is enabled
- Drops desktop.ini file(s)
- Modifies WinLogon
- Sets desktop wallpaper using registry
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c vssadmin delete shadows /all /quiet & wmic shadowcopy delete & bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no & wbadmin delete catalog -quiet2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\vssadmin.exevssadmin delete shadows /all /quiet3⤵
- Interacts with shadow copies
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C:\Windows\SysWOW64\Wbem\WMIC.exewmic shadowcopy delete3⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Program Files\Temp\AESRT\refresh.bat" "2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exeRUNDLL32.EXE user32.dll,UpdatePerUserSystemParameters ,1 ,True3⤵
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C:\Windows\SysWOW64\rundll32.exeRUNDLL32.EXE user32.dll,UpdatePerUserSystemParameters ,1 ,True3⤵
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C:\Windows\SysWOW64\rundll32.exeRUNDLL32.EXE user32.dll,UpdatePerUserSystemParameters ,1 ,True3⤵
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C:\Windows\SysWOW64\rundll32.exeRUNDLL32.EXE user32.dll,UpdatePerUserSystemParameters ,1 ,True3⤵
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C:\Windows\SysWOW64\rundll32.exeRUNDLL32.EXE user32.dll,UpdatePerUserSystemParameters ,1 ,True3⤵
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
2Winlogon Helper DLL
2Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
378B
MD50c7022bc17761ecace63d45343c9d2fd
SHA17fdf53bc92830e4e5935f61d745a055edd3fc9e3
SHA25698ba9ab619027be3265fd7827270e1ec59fbe39b79f98c65c17712f667c7fe8a
SHA512ea434972b6fbffdf6c59e083cc1ed55557b4aa9113413f387b20c5eaf212a86ce995d4c8a93251cc22b9fd8b7ae4fc4125bbc85f5caca2dad8d81f4bb05dba5a
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Filesize
4KB
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Filesize
1.4MB
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Filesize
5.0MB
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Filesize
584KB
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Filesize
6.9MB
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Filesize
40KB
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Filesize
4KB
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Filesize
6.9MB