Analysis
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max time kernel
150s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20230712-en -
resource tags
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submitted
03-08-2023 17:40
General
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Target
MsMpEng.exe
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Size
56KB
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MD5
feac4d584524d823436a85d12ddcea84
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SHA1
682bace188ab95cdf872bfd58e5570411f2b0d35
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SHA256
b298eb79516d68aba301ccef3b664f9d81092127650301b15f9b249945d527f4
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SHA512
d0d9653a6d895041549f7935e0e7b7eb10ff17731f7d644b5ce8e41a6940a9ee5215efd43c0e171aaeea2678829de973365a088df3064dd2d527e9367272b9d7
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SSDEEP
1536:dNeRBl5PT/rx1mzwRMSTdLpJCfaHIHzs189:dQRrmzwR5JOHz1
Malware Config
Extracted
C:\info.hta
class='mark'>[email protected]</span></div>
class='mark'>[email protected]</span></div>
http://www.w3.org/TR/html4/strict.dtd'>
Extracted
C:\Users\Admin\Desktop\info.hta
Signatures
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Phobos
Phobos ransomware appeared at the beginning of 2019.
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Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Modifies boot configuration data using bcdedit 1 TTPs 4 IoCs
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Renames multiple (315) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Deletes backup catalog 3 TTPs 2 IoCs
Uses wbadmin.exe to inhibit system recovery.
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Modifies Windows Firewall 1 TTPs 2 IoCs
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Drops startup file 3 IoCs
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Adds Run key to start application 2 TTPs 2 IoCs
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Drops desktop.ini file(s) 64 IoCs
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Drops file in Program Files directory 64 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 2 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
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Modifies Internet Explorer settings 1 TTPs 4 IoCs
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Suspicious behavior: EnumeratesProcesses 64 IoCs
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Suspicious use of AdjustPrivilegeToken 64 IoCs
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Suspicious use of WriteProcessMemory 64 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\MsMpEng.exe"C:\Users\Admin\AppData\Local\Temp\MsMpEng.exe"1⤵
- Drops startup file
- Adds Run key to start application
- Drops desktop.ini file(s)
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\MsMpEng.exe"C:\Users\Admin\AppData\Local\Temp\MsMpEng.exe"2⤵
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C:\Windows\system32\cmd.exe"C:\Windows\system32\cmd.exe"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet3⤵
- Interacts with shadow copies
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete3⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures3⤵
- Modifies boot configuration data using bcdedit
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no3⤵
- Modifies boot configuration data using bcdedit
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C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet3⤵
- Deletes backup catalog
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C:\Windows\system32\cmd.exe"C:\Windows\system32\cmd.exe"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\netsh.exenetsh advfirewall set currentprofile state off3⤵
- Modifies Windows Firewall
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C:\Windows\system32\netsh.exenetsh firewall set opmode mode=disable3⤵
- Modifies Windows Firewall
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C:\Windows\SysWOW64\mshta.exe"C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\info.hta"2⤵
- Modifies Internet Explorer settings
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C:\Windows\SysWOW64\mshta.exe"C:\Windows\SysWOW64\mshta.exe" "C:\users\public\desktop\info.hta"2⤵
- Modifies Internet Explorer settings
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C:\Windows\SysWOW64\mshta.exe"C:\Windows\SysWOW64\mshta.exe" "C:\info.hta"2⤵
- Modifies Internet Explorer settings
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C:\Windows\SysWOW64\mshta.exe"C:\Windows\SysWOW64\mshta.exe" "F:\info.hta"2⤵
- Modifies Internet Explorer settings
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C:\Windows\system32\cmd.exe"C:\Windows\system32\cmd.exe"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet3⤵
- Interacts with shadow copies
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete3⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures3⤵
- Modifies boot configuration data using bcdedit
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no3⤵
- Modifies boot configuration data using bcdedit
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C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet3⤵
- Deletes backup catalog
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
189.5MB
MD59b1ac31865cf9557ecab38d92ec1af6e
SHA18d789940375218875c6dc80e357ba6de5eff7147
SHA256e8cb891de17b1e290cfe2e25f64fd1a5ace6ffb9f0221c129986b76ed8b8b126
SHA512c35bd80f0ce4d548205ce78c0bfe9b802b0c34d38286809fd2bc972af317e93c129a26fdc43c03c7fd6036bd156b04b8c8ddec9a2af00db8e6ad92c12b54037a
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Filesize
5KB
MD52b963217f3219b24a3bb0a6ec0ee630a
SHA16b43109d50a539262b43e294ca758fb667971180
SHA2569f3f44958154172de924b952e570ffc56f23425ed4c6b0953b94ecd2f0ad7c9b
SHA512b73b771b1df71b444bd709a15cf3cf853b275b6e2e17104ed882f4d4ce887ae5a01e4145770b96b6fadcbf0c1550f9f9502cd9d9f55b72710398207605936f36
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Filesize
5KB
MD52b963217f3219b24a3bb0a6ec0ee630a
SHA16b43109d50a539262b43e294ca758fb667971180
SHA2569f3f44958154172de924b952e570ffc56f23425ed4c6b0953b94ecd2f0ad7c9b
SHA512b73b771b1df71b444bd709a15cf3cf853b275b6e2e17104ed882f4d4ce887ae5a01e4145770b96b6fadcbf0c1550f9f9502cd9d9f55b72710398207605936f36
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Filesize
5KB
MD52b963217f3219b24a3bb0a6ec0ee630a
SHA16b43109d50a539262b43e294ca758fb667971180
SHA2569f3f44958154172de924b952e570ffc56f23425ed4c6b0953b94ecd2f0ad7c9b
SHA512b73b771b1df71b444bd709a15cf3cf853b275b6e2e17104ed882f4d4ce887ae5a01e4145770b96b6fadcbf0c1550f9f9502cd9d9f55b72710398207605936f36
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Filesize
5KB
MD52b963217f3219b24a3bb0a6ec0ee630a
SHA16b43109d50a539262b43e294ca758fb667971180
SHA2569f3f44958154172de924b952e570ffc56f23425ed4c6b0953b94ecd2f0ad7c9b
SHA512b73b771b1df71b444bd709a15cf3cf853b275b6e2e17104ed882f4d4ce887ae5a01e4145770b96b6fadcbf0c1550f9f9502cd9d9f55b72710398207605936f36
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Filesize
5KB
MD52b963217f3219b24a3bb0a6ec0ee630a
SHA16b43109d50a539262b43e294ca758fb667971180
SHA2569f3f44958154172de924b952e570ffc56f23425ed4c6b0953b94ecd2f0ad7c9b
SHA512b73b771b1df71b444bd709a15cf3cf853b275b6e2e17104ed882f4d4ce887ae5a01e4145770b96b6fadcbf0c1550f9f9502cd9d9f55b72710398207605936f36