Analysis
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max time kernel
252s -
max time network
130s -
platform
windows7_x64 -
resource
win7-20231020-en -
resource tags
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submitted
22-11-2023 11:37
General
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Target
518544e56e8ccee401ffa1b0a01a10ce23e49ec21ec441c6c7c3951b01c1b19c.exe
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Size
281KB
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MD5
2809e15a3a54484e042fe65fffd17409
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SHA1
4a8f0331abaf8f629b3c8220f0d55339cfa30223
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SHA256
518544e56e8ccee401ffa1b0a01a10ce23e49ec21ec441c6c7c3951b01c1b19c
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SHA512
698e16fd67861377e2ccaace4d0e1a619a8b7c68e8aefc4090e9d1cbbcdfb8d8aede76f9e63f81479f5a035e8008699a4d7175da6248e6e49eb7c81b3dba30c3
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SSDEEP
3072:D5IwIMZKkczttW5ivhjqKO1I9Goh6F4mAqeormMkpCWlunhNGA5yjszVIEe9:NIMsztZZ+KQqGo5QfmLpCoun6W
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 (310) 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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Opens file in notepad (likely ransom note) 1 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 FindShellTrayWindow 2 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\518544e56e8ccee401ffa1b0a01a10ce23e49ec21ec441c6c7c3951b01c1b19c.exe"C:\Users\Admin\AppData\Local\Temp\518544e56e8ccee401ffa1b0a01a10ce23e49ec21ec441c6c7c3951b01c1b19c.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\518544e56e8ccee401ffa1b0a01a10ce23e49ec21ec441c6c7c3951b01c1b19c.exe"C:\Users\Admin\AppData\Local\Temp\518544e56e8ccee401ffa1b0a01a10ce23e49ec21ec441c6c7c3951b01c1b19c.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\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\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\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
- Suspicious use of FindShellTrayWindow
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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
- Suspicious use of FindShellTrayWindow
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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⤵
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\info.txt1⤵
- Opens file in notepad (likely ransom note)
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
MD5e136f5ab25dfd6862d882d242b18b186
SHA1550487ee4902253d0f6c9dda66378cf8c05843d2
SHA25680c0abc21a682ccbeb79edd5660b44fa94fb60252f0a5c58f726faa3e5b7e987
SHA5123cd1c24b0e5e1c02d0df6049245095679f58a97d1e1947c5ccf4726acbe6ef90c94e09d43db62a756bb4bba3684a6fb7fdd3ff20170af9c85cbb12d583f84a82
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Filesize
5KB
MD57ce24f7e4ff2c0898a97d47d5d6ddca7
SHA104a93a3066bba855803f09e3641e2f68df0140a6
SHA256ba57d65fff0c05d5c960e148343d0561c4bb5e5baf53c8aadaa1a06c8dc00483
SHA5129ba814db0229222b8f5b7b0139b280276845e6eb70710d9acd502f3685fac6ea8275a3c21c12114e637e91508a25998c73e9cf7d3482c626886613ad1ff18755
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Filesize
216B
MD5785cafecedf21b32589f303a8a490a6a
SHA15388d3b2a40734142918364eadc02b4429d856e3
SHA256e455b6bfe96488ca6d4ee70ef495c8925040d22a7cba422e0db7469065daf932
SHA5124511937134dd7809e888f9bcfcf06d24c17a06f55b5a2b9690a381fda8de9cb793a9799c91814ce43f47ca6db594b010c5feae8aff08bd3edd448967d06fc93b
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Filesize
5KB
MD57ce24f7e4ff2c0898a97d47d5d6ddca7
SHA104a93a3066bba855803f09e3641e2f68df0140a6
SHA256ba57d65fff0c05d5c960e148343d0561c4bb5e5baf53c8aadaa1a06c8dc00483
SHA5129ba814db0229222b8f5b7b0139b280276845e6eb70710d9acd502f3685fac6ea8275a3c21c12114e637e91508a25998c73e9cf7d3482c626886613ad1ff18755
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Filesize
5KB
MD57ce24f7e4ff2c0898a97d47d5d6ddca7
SHA104a93a3066bba855803f09e3641e2f68df0140a6
SHA256ba57d65fff0c05d5c960e148343d0561c4bb5e5baf53c8aadaa1a06c8dc00483
SHA5129ba814db0229222b8f5b7b0139b280276845e6eb70710d9acd502f3685fac6ea8275a3c21c12114e637e91508a25998c73e9cf7d3482c626886613ad1ff18755
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Filesize
5KB
MD57ce24f7e4ff2c0898a97d47d5d6ddca7
SHA104a93a3066bba855803f09e3641e2f68df0140a6
SHA256ba57d65fff0c05d5c960e148343d0561c4bb5e5baf53c8aadaa1a06c8dc00483
SHA5129ba814db0229222b8f5b7b0139b280276845e6eb70710d9acd502f3685fac6ea8275a3c21c12114e637e91508a25998c73e9cf7d3482c626886613ad1ff18755
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Filesize
5KB
MD57ce24f7e4ff2c0898a97d47d5d6ddca7
SHA104a93a3066bba855803f09e3641e2f68df0140a6
SHA256ba57d65fff0c05d5c960e148343d0561c4bb5e5baf53c8aadaa1a06c8dc00483
SHA5129ba814db0229222b8f5b7b0139b280276845e6eb70710d9acd502f3685fac6ea8275a3c21c12114e637e91508a25998c73e9cf7d3482c626886613ad1ff18755
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Filesize
5.2MB
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Filesize
5.2MB
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Filesize
5.2MB
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Filesize
84KB
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Filesize
5.2MB
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Filesize
5.2MB
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Filesize
5.2MB
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Filesize
84KB
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Filesize
5.2MB
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Filesize
60KB
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Filesize
5.2MB
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Filesize
5.2MB
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Filesize
60KB
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Filesize
5.2MB