Analysis
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max time kernel
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max time network
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platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
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submitted
24-01-2023 20:49
General
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Target
bc3b5ef9b1dc2f1b6a23b138c4c7b047479d98dfbdf216097c08a68c2f771732.exe
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Size
56KB
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MD5
f7352e7f837f64fb08008a0edcfe5261
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SHA1
d8df24afe3e378017660648d88e4fd73e2c4e16b
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SHA256
bc3b5ef9b1dc2f1b6a23b138c4c7b047479d98dfbdf216097c08a68c2f771732
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SHA512
1bd3d41f564e1f3c44c02874df8e94e261a169b58e00a2348f3fd9ce9d3d5df44f3df39713343d02c69ebc597e041280dccb352244d8d3596301e007eec1d84e
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SSDEEP
1536:gNeRBl5PT/rx1mzwRMSTdLpJ5qE4ROWUur:gQRrmzwR5Jk/Uur
Malware Config
Extracted
C:\users\public\desktop\info.hta
https://tox.chat/
Signatures
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Phobos
Phobos ransomware appeared at the beginning of 2019.
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Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
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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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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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Modifies extensions of user files 2 IoCs
Ransomware generally changes the extension on encrypted files.
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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). Likely ransomware behaviour.
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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
Processes
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C:\Users\Admin\AppData\Local\Temp\bc3b5ef9b1dc2f1b6a23b138c4c7b047479d98dfbdf216097c08a68c2f771732.exe"C:\Users\Admin\AppData\Local\Temp\bc3b5ef9b1dc2f1b6a23b138c4c7b047479d98dfbdf216097c08a68c2f771732.exe"1⤵
- Modifies extensions of user files
- 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\bc3b5ef9b1dc2f1b6a23b138c4c7b047479d98dfbdf216097c08a68c2f771732.exe"C:\Users\Admin\AppData\Local\Temp\bc3b5ef9b1dc2f1b6a23b138c4c7b047479d98dfbdf216097c08a68c2f771732.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" {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\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\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s seclogon1⤵
- Suspicious use of NtCreateUserProcessOtherParentProcess
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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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 v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
5KB
MD50b4c27ba37e4e17413998949cd6328ac
SHA19709ee34476511782637fa924aebd5869e5ce421
SHA256ad83b142f48c8937719a375c36642fb84d4e0e343e5022db6f75d8d3187f9c8c
SHA512db3d65652258ded4d6f726699185d056816525146d575a11ebb02f5ba0426141f7188a1398a397d976a3114775a388a95f239e1e9eaf7513b38576c2df6f25ff
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Filesize
5KB
MD50b4c27ba37e4e17413998949cd6328ac
SHA19709ee34476511782637fa924aebd5869e5ce421
SHA256ad83b142f48c8937719a375c36642fb84d4e0e343e5022db6f75d8d3187f9c8c
SHA512db3d65652258ded4d6f726699185d056816525146d575a11ebb02f5ba0426141f7188a1398a397d976a3114775a388a95f239e1e9eaf7513b38576c2df6f25ff
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Filesize
5KB
MD50b4c27ba37e4e17413998949cd6328ac
SHA19709ee34476511782637fa924aebd5869e5ce421
SHA256ad83b142f48c8937719a375c36642fb84d4e0e343e5022db6f75d8d3187f9c8c
SHA512db3d65652258ded4d6f726699185d056816525146d575a11ebb02f5ba0426141f7188a1398a397d976a3114775a388a95f239e1e9eaf7513b38576c2df6f25ff
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