Analysis
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max time kernel
150s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20231127-en -
resource tags
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submitted
05-12-2023 10:27
General
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Target
tmp.exe
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Size
56KB
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MD5
3ce6441e1d986483a8c80a8aa861d23a
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SHA1
60d281e634e3abbb8f2f28ecfe2c39816facd5fd
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SHA256
59ee1056869903e9f34f0c61cfb9af08b1ae85d2ac4844c6c888671047bf52dd
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SHA512
eaed716e28f12b50a1ab93165edd706ee1f53edf3119fd5b5ea31c61aaa5f34d49eebdcacb68e6f9225780c6951bf7f0ac374989a3745e5c1b59e9a7a6fbbee2
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SSDEEP
1536:SNeRBl5PT/rx1mzwRMSTdLpJi88RHYIpzkQe:SQRrmzwR5JIHY2Ne
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 (494) 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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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
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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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Checks SCSI registry key(s) 3 TTPs 4 IoCs
SCSI information is often read in order to detect sandboxing environments.
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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 registry class 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 WriteProcessMemory 42 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\tmp.exe"C:\Users\Admin\AppData\Local\Temp\tmp.exe"1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Drops desktop.ini file(s)
- Drops file in Program Files directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\tmp.exe"C:\Users\Admin\AppData\Local\Temp\tmp.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" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}2⤵
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C:\Windows\SysWOW64\mshta.exe"C:\Windows\SysWOW64\mshta.exe" "C:\users\public\desktop\info.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}2⤵
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C:\Windows\SysWOW64\mshta.exe"C:\Windows\SysWOW64\mshta.exe" "C:\info.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}2⤵
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C:\Windows\SysWOW64\mshta.exe"C:\Windows\SysWOW64\mshta.exe" "F:\info.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}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\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⤵
- Checks SCSI registry key(s)
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Privilege Escalation
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
3.2MB
MD556bc82c5b15ec11c350a35f180bd2072
SHA15a234410fc477d3630a3e526963b7904edaf6e47
SHA256ce70751e6fdb0d76af15e816011c3777960e2a2bc84bbaf31a7566b3adca6bcf
SHA5128ce421a7ba2d27d0a79080f8445ec7f0888516e4d53d3e10052c4753b3fff3425831868450f4b860a6b67051e1f0891553047d4aa7612e4a12493c04f52749b7
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Filesize
5KB
MD522e66cb7e6cfa678885dc76497f18e29
SHA123afa3971e52ba3212f0e9f606a6379ff7148132
SHA256be34d0a941eb0dd76760c10409968e2b28a805a4a15aff008672771e976d424e
SHA5124147633627b432506cbd87fd8aaf0d2172787b4c58219a7143fac5642d1a93a2f1c1588ae6b9677c72a84d33d17e11eadac1c97320225305914f9d8b7572e745
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Filesize
5KB
MD522e66cb7e6cfa678885dc76497f18e29
SHA123afa3971e52ba3212f0e9f606a6379ff7148132
SHA256be34d0a941eb0dd76760c10409968e2b28a805a4a15aff008672771e976d424e
SHA5124147633627b432506cbd87fd8aaf0d2172787b4c58219a7143fac5642d1a93a2f1c1588ae6b9677c72a84d33d17e11eadac1c97320225305914f9d8b7572e745
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Filesize
5KB
MD522e66cb7e6cfa678885dc76497f18e29
SHA123afa3971e52ba3212f0e9f606a6379ff7148132
SHA256be34d0a941eb0dd76760c10409968e2b28a805a4a15aff008672771e976d424e
SHA5124147633627b432506cbd87fd8aaf0d2172787b4c58219a7143fac5642d1a93a2f1c1588ae6b9677c72a84d33d17e11eadac1c97320225305914f9d8b7572e745
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Filesize
5KB
MD522e66cb7e6cfa678885dc76497f18e29
SHA123afa3971e52ba3212f0e9f606a6379ff7148132
SHA256be34d0a941eb0dd76760c10409968e2b28a805a4a15aff008672771e976d424e
SHA5124147633627b432506cbd87fd8aaf0d2172787b4c58219a7143fac5642d1a93a2f1c1588ae6b9677c72a84d33d17e11eadac1c97320225305914f9d8b7572e745
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Filesize
5KB
MD522e66cb7e6cfa678885dc76497f18e29
SHA123afa3971e52ba3212f0e9f606a6379ff7148132
SHA256be34d0a941eb0dd76760c10409968e2b28a805a4a15aff008672771e976d424e
SHA5124147633627b432506cbd87fd8aaf0d2172787b4c58219a7143fac5642d1a93a2f1c1588ae6b9677c72a84d33d17e11eadac1c97320225305914f9d8b7572e745