Resubmissions
14-06-2023 16:01
230614-tgmnqsbb91 1020-02-2023 17:20
230220-vwr3fabg33 1020-02-2023 16:59
230220-vhjtxabf79 10Analysis
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max time kernel
150s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
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submitted
14-06-2023 16:01
General
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Target
1.exe
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Size
56KB
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MD5
cfab0d0fe983e37aa514f3979c3f2b3c
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SHA1
2fc3580b9f0c1f86f4d3f44a4b58f0d4efbd72eb
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SHA256
ecf6807ca8fa203fa534673f26af5121ff2e36cac93535139fc73b9fc8316b64
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SHA512
708c6a72becc067561e7dfc6f17238808ea9647c14ff6975e82424b4e5806f900af0ecd3b48ade5d6f56953410b5864a7ec47f8c393569a595618fb907d0327d
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SSDEEP
768:vvrNNeRBl5JFTXqwXrkgrn/9/HiDKGwRj4RcTdyH4pYT3nPKVU1E5NdESVxvUNCL:RNeRBl5PT/rx1mzwRMSTdLpJ5UPNBu+
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 (472) 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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Modifies extensions of user files 1 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).
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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 39 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\1.exe"C:\Users\Admin\AppData\Local\Temp\1.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\1.exe"C:\Users\Admin\AppData\Local\Temp\1.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\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
2.7MB
MD5fba89230b535f2ef65c8a9d41569b114
SHA108df94b3186cc1b0fc9a5dceeaf1cdcc0d82960b
SHA256bc4c6d96b1f33d1fa772c7a90128c67256cc11f121477f71e66955bc2da548dc
SHA512f90c1f50ceecbdd0847ed37aea86ac3c6e67d8b57a537d562b1ab5ef7d988ab3dfd30616c6349920945376fe0209d4a960fffa4a69ea117550cd2b296402c4df
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Filesize
5KB
MD50e35a4ef3cba515ba028c6f64f1458da
SHA1e52c0421bfa633951c60299a74c535e8a33dba02
SHA256b930ee0c01f1ef0d42b0934cf98987c1bed8d66256eea2b685719ae503ecc5fc
SHA5123210c06f0d426b837825382d8dd0d683f21597171677f1524658df03e79a3ba2c87ce44e0d30e1c586c781716f99c81553f302ff98a0d9e64d30ddcf98789d7e
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Filesize
5KB
MD50e35a4ef3cba515ba028c6f64f1458da
SHA1e52c0421bfa633951c60299a74c535e8a33dba02
SHA256b930ee0c01f1ef0d42b0934cf98987c1bed8d66256eea2b685719ae503ecc5fc
SHA5123210c06f0d426b837825382d8dd0d683f21597171677f1524658df03e79a3ba2c87ce44e0d30e1c586c781716f99c81553f302ff98a0d9e64d30ddcf98789d7e
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Filesize
5KB
MD50e35a4ef3cba515ba028c6f64f1458da
SHA1e52c0421bfa633951c60299a74c535e8a33dba02
SHA256b930ee0c01f1ef0d42b0934cf98987c1bed8d66256eea2b685719ae503ecc5fc
SHA5123210c06f0d426b837825382d8dd0d683f21597171677f1524658df03e79a3ba2c87ce44e0d30e1c586c781716f99c81553f302ff98a0d9e64d30ddcf98789d7e
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Filesize
5KB
MD50e35a4ef3cba515ba028c6f64f1458da
SHA1e52c0421bfa633951c60299a74c535e8a33dba02
SHA256b930ee0c01f1ef0d42b0934cf98987c1bed8d66256eea2b685719ae503ecc5fc
SHA5123210c06f0d426b837825382d8dd0d683f21597171677f1524658df03e79a3ba2c87ce44e0d30e1c586c781716f99c81553f302ff98a0d9e64d30ddcf98789d7e