Analysis
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max time kernel
150s -
max time network
123s -
platform
windows7_x64 -
resource
win7-20230831-en -
resource tags
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submitted
06-10-2023 15:41
General
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Target
NEAS.c0539fd02ca0184925a932a9e926c681dc9c81b5de4624250f2dd885ca5c4763_JC.exe
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Size
686KB
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MD5
ecdf7acb35e4268bcafb03b8af12f659
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SHA1
93b0d892bd3fbb7d3d9efb69fffdc060159d4536
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SHA256
c0539fd02ca0184925a932a9e926c681dc9c81b5de4624250f2dd885ca5c4763
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SHA512
5cd325c7a0a47921e940480c4e3f983b5b56a2906639e6f2a67d3264e039f06034d286f68e36a1b1ae7642d1ac0e274283d5d45381cede14ba83177355f1017d
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SSDEEP
12288:UzRlcffXwJsWFAFnjJPQJq+6byL3z5SjMa1jkSC9U:ujB0JYcAa1S
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 (314) 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\NEAS.c0539fd02ca0184925a932a9e926c681dc9c81b5de4624250f2dd885ca5c4763_JC.exe"C:\Users\Admin\AppData\Local\Temp\NEAS.c0539fd02ca0184925a932a9e926c681dc9c81b5de4624250f2dd885ca5c4763_JC.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\NEAS.c0539fd02ca0184925a932a9e926c681dc9c81b5de4624250f2dd885ca5c4763_JC.exeC:\Users\Admin\AppData\Local\Temp\NEAS.c0539fd02ca0184925a932a9e926c681dc9c81b5de4624250f2dd885ca5c4763_JC.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\NEAS.c0539fd02ca0184925a932a9e926c681dc9c81b5de4624250f2dd885ca5c4763_JC.exe"C:\Users\Admin\AppData\Local\Temp\NEAS.c0539fd02ca0184925a932a9e926c681dc9c81b5de4624250f2dd885ca5c4763_JC.exe"3⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\NEAS.c0539fd02ca0184925a932a9e926c681dc9c81b5de4624250f2dd885ca5c4763_JC.exeC:\Users\Admin\AppData\Local\Temp\NEAS.c0539fd02ca0184925a932a9e926c681dc9c81b5de4624250f2dd885ca5c4763_JC.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
MD53f07ca685d917311a47a0a822686aa54
SHA1a33ae405b9c17a7072d06b3cceaf1cae2cca2486
SHA256eef4e34d2703d1e69a443ff7bb4d8c9f8a56889cbb400de0b29eb9d1cb2b47c2
SHA5125f40456beaf7a8ff25834f77b40633635dbb78d38e20e1e7dd84eab5cfd5672b3d87b5cb8dc80ff05fc72ed98ab13dccd6d6cbcecd5a31db699b1d590434785b
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Filesize
5KB
MD5fd05309795b09441602a3022e72ac426
SHA102dd1080f515185168e2ff61dd06c73fe5c1e78c
SHA256c04b4da8885d00c82cbd1583495888dd278311366070e4e67e0896a6d8643956
SHA5126c9157d855f760cf8fc9f05f3224c0443ef24681eecf65312755f1a652dc953845555d87ef3ea3889a17b9f63d5d1aa4fde3c17072278c04db876d40d3a40e5a
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Filesize
5KB
MD5fd05309795b09441602a3022e72ac426
SHA102dd1080f515185168e2ff61dd06c73fe5c1e78c
SHA256c04b4da8885d00c82cbd1583495888dd278311366070e4e67e0896a6d8643956
SHA5126c9157d855f760cf8fc9f05f3224c0443ef24681eecf65312755f1a652dc953845555d87ef3ea3889a17b9f63d5d1aa4fde3c17072278c04db876d40d3a40e5a
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Filesize
5KB
MD5fd05309795b09441602a3022e72ac426
SHA102dd1080f515185168e2ff61dd06c73fe5c1e78c
SHA256c04b4da8885d00c82cbd1583495888dd278311366070e4e67e0896a6d8643956
SHA5126c9157d855f760cf8fc9f05f3224c0443ef24681eecf65312755f1a652dc953845555d87ef3ea3889a17b9f63d5d1aa4fde3c17072278c04db876d40d3a40e5a
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Filesize
5KB
MD5fd05309795b09441602a3022e72ac426
SHA102dd1080f515185168e2ff61dd06c73fe5c1e78c
SHA256c04b4da8885d00c82cbd1583495888dd278311366070e4e67e0896a6d8643956
SHA5126c9157d855f760cf8fc9f05f3224c0443ef24681eecf65312755f1a652dc953845555d87ef3ea3889a17b9f63d5d1aa4fde3c17072278c04db876d40d3a40e5a
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Filesize
5KB
MD5fd05309795b09441602a3022e72ac426
SHA102dd1080f515185168e2ff61dd06c73fe5c1e78c
SHA256c04b4da8885d00c82cbd1583495888dd278311366070e4e67e0896a6d8643956
SHA5126c9157d855f760cf8fc9f05f3224c0443ef24681eecf65312755f1a652dc953845555d87ef3ea3889a17b9f63d5d1aa4fde3c17072278c04db876d40d3a40e5a
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Filesize
280KB
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Filesize
304KB
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Filesize
256KB
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Filesize
208KB
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Filesize
6.9MB
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Filesize
6.9MB
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Filesize
712KB
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Filesize
4KB
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Filesize
36KB
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Filesize
6.9MB
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Filesize
6.9MB
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Filesize
712KB
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Filesize
256KB
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Filesize
76KB
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Filesize
76KB
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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
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Filesize
4KB
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB