Analysis
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max time kernel
150s -
max time network
125s -
platform
windows7_x64 -
resource
win7-20230831-en -
resource tags
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submitted
07-09-2023 06:31
General
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Target
cb0f99306d05042b8b3db064ac3489b9.exe
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Size
628KB
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MD5
cb0f99306d05042b8b3db064ac3489b9
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SHA1
1a5e8b4435f97dfd09b764c82dba35868e792803
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SHA256
71bd706cc0ace3774449282a9c1de5403f8f43dad118b9fbf4fc45cf4894f8e9
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SHA512
fd69834d9da70fda36478de8106f288b7c7be48029a8ccc1fbc6ae8a7b4c3d47e189f262c525abad7a87ba1ed784adb57ae20794e6445af7c4d16185f5cafd41
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SSDEEP
12288:nOifrg3Pq0mw2Jgc75Tn9hTMK6OHjuy+X4SsDca7nF7Z30G:A3sw2JjyK6zy+Xv8nF7ZEG
Malware Config
Extracted
C:\info.hta
class='mark'>[email protected]</span></div>
http://www.w3.org/TR/html4/strict.dtd'>
Extracted
C:\users\public\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 (312) 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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Suspicious use of SetThreadContext 2 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
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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.
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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\cb0f99306d05042b8b3db064ac3489b9.exe"C:\Users\Admin\AppData\Local\Temp\cb0f99306d05042b8b3db064ac3489b9.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\cb0f99306d05042b8b3db064ac3489b9.exeC:\Users\Admin\AppData\Local\Temp\cb0f99306d05042b8b3db064ac3489b9.exe2⤵
- 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\cb0f99306d05042b8b3db064ac3489b9.exe"C:\Users\Admin\AppData\Local\Temp\cb0f99306d05042b8b3db064ac3489b9.exe"3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\cb0f99306d05042b8b3db064ac3489b9.exeC:\Users\Admin\AppData\Local\Temp\cb0f99306d05042b8b3db064ac3489b9.exe4⤵
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C:\Users\Admin\AppData\Local\Temp\cb0f99306d05042b8b3db064ac3489b9.exeC:\Users\Admin\AppData\Local\Temp\cb0f99306d05042b8b3db064ac3489b9.exe4⤵
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C:\Users\Admin\AppData\Local\Temp\cb0f99306d05042b8b3db064ac3489b9.exeC:\Users\Admin\AppData\Local\Temp\cb0f99306d05042b8b3db064ac3489b9.exe4⤵
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C:\Windows\system32\cmd.exe"C:\Windows\system32\cmd.exe"3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\netsh.exenetsh advfirewall set currentprofile state off4⤵
- Modifies Windows Firewall
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C:\Windows\system32\netsh.exenetsh firewall set opmode mode=disable4⤵
- Modifies Windows Firewall
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C:\Windows\system32\cmd.exe"C:\Windows\system32\cmd.exe"3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
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C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
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C:\Windows\SysWOW64\mshta.exe"C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\info.hta"3⤵
- Modifies Internet Explorer settings
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C:\Windows\SysWOW64\mshta.exe"C:\Windows\SysWOW64\mshta.exe" "C:\users\public\desktop\info.hta"3⤵
- Modifies Internet Explorer settings
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C:\Windows\SysWOW64\mshta.exe"C:\Windows\SysWOW64\mshta.exe" "C:\info.hta"3⤵
- Modifies Internet Explorer settings
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C:\Windows\SysWOW64\mshta.exe"C:\Windows\SysWOW64\mshta.exe" "F:\info.hta"3⤵
- Modifies Internet Explorer settings
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C:\Windows\system32\cmd.exe"C:\Windows\system32\cmd.exe"3⤵
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C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
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C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- 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
143.1MB
MD548c674825b7307b4e53a6bb4367e4cd2
SHA13cbcf2d046036273fcb27a7953fdc98cc6556157
SHA2564f96f3c9cdcca930e7c554543d8488e233e897255b7bb3aaf23e0b829e1d55fb
SHA512eb2357589817215cf6de0e1c2d414e7c5db7a5347e3410f2462abe2d8df31f91050daed0024206cbd6acf04f9455f552baa00ae1bd0438ba96c36020ffe5ee89
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Filesize
5KB
MD59e6a4e8d3bd9132129b99f27045da11f
SHA1ef174002b17584af227e38d29ed3d4c175572703
SHA2567ba24f6660e429ad6baeb1bc439f687c2fdefc9999af48b384cc5eebf77bb556
SHA5122028e79684e6e07654e7ecba54536acce500ab903d4ece1ae535fbdd7f059bc0e8171faa77da1a9641e6baec6eb5f8a0a4a8e85fb0ea543ae6ece3d27a18bb7b
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Filesize
5KB
MD59e6a4e8d3bd9132129b99f27045da11f
SHA1ef174002b17584af227e38d29ed3d4c175572703
SHA2567ba24f6660e429ad6baeb1bc439f687c2fdefc9999af48b384cc5eebf77bb556
SHA5122028e79684e6e07654e7ecba54536acce500ab903d4ece1ae535fbdd7f059bc0e8171faa77da1a9641e6baec6eb5f8a0a4a8e85fb0ea543ae6ece3d27a18bb7b
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Filesize
5KB
MD59e6a4e8d3bd9132129b99f27045da11f
SHA1ef174002b17584af227e38d29ed3d4c175572703
SHA2567ba24f6660e429ad6baeb1bc439f687c2fdefc9999af48b384cc5eebf77bb556
SHA5122028e79684e6e07654e7ecba54536acce500ab903d4ece1ae535fbdd7f059bc0e8171faa77da1a9641e6baec6eb5f8a0a4a8e85fb0ea543ae6ece3d27a18bb7b
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Filesize
5KB
MD59e6a4e8d3bd9132129b99f27045da11f
SHA1ef174002b17584af227e38d29ed3d4c175572703
SHA2567ba24f6660e429ad6baeb1bc439f687c2fdefc9999af48b384cc5eebf77bb556
SHA5122028e79684e6e07654e7ecba54536acce500ab903d4ece1ae535fbdd7f059bc0e8171faa77da1a9641e6baec6eb5f8a0a4a8e85fb0ea543ae6ece3d27a18bb7b
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Filesize
5KB
MD59e6a4e8d3bd9132129b99f27045da11f
SHA1ef174002b17584af227e38d29ed3d4c175572703
SHA2567ba24f6660e429ad6baeb1bc439f687c2fdefc9999af48b384cc5eebf77bb556
SHA5122028e79684e6e07654e7ecba54536acce500ab903d4ece1ae535fbdd7f059bc0e8171faa77da1a9641e6baec6eb5f8a0a4a8e85fb0ea543ae6ece3d27a18bb7b
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Filesize
208KB
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Filesize
304KB
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Filesize
256KB
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Filesize
280KB
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Filesize
6.9MB
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Filesize
656KB
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Filesize
6.9MB
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Filesize
656KB
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Filesize
6.9MB
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Filesize
256KB
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Filesize
6.9MB
-
Filesize
76KB
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Filesize
4KB
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Filesize
76KB
-
Filesize
76KB
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Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
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Filesize
76KB
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Filesize
76KB
-
Filesize
76KB
-
Filesize
36KB
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Filesize
4KB