Analysis
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max time kernel
150s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
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submitted
11-03-2023 16:53
General
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Target
MsMpEng.bin.exe
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Size
55KB
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MD5
de3118d4369fddeedf5272011350476c
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SHA1
f04db253158efe0aa9427e61b7b62ae4a4373660
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SHA256
d8acb51e4c3c0fe91ff0ffff41e6b6c311affcea223b05b24383aa07d6923334
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SHA512
313c334cfc04ab23449e8f58926bb4d7a7468d13eef0a07f604712ceeab4a6d9337dbc56f9899839028b3d7eca2c2e9e9e8b55af9e4fe480eace71b88dc35b6d
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SSDEEP
768:xvrNNeRBl5JFTXqwXrkgrn/9/HiDKGwRj4RcTdyH4pYT3nPKVU1EyjeZKU+McPsY:LNeRBl5PT/rx1mzwRMSTdLpJyjxiuo3
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\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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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). 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 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\MsMpEng.bin.exe"C:\Users\Admin\AppData\Local\Temp\MsMpEng.bin.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\MsMpEng.bin.exe"C:\Users\Admin\AppData\Local\Temp\MsMpEng.bin.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\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
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Downloads
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Filesize
3.2MB
MD5ec40163a29b9fa235855cae4ec527ffc
SHA15b77866c402912bd46807b6edb24e034639c7e46
SHA256c174693be3f9851833971ecaa09f66ad0b6634fdf4b4e98570c110e729f3aadf
SHA5124d7ffe2d16e92a387a1ae3649d973a63062247df1d9b2d2fca70d270283046a5021facc795b741af9c12f1d1547bb0b1f63e3f141def72bc5e00168b58f79e0b
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Filesize
5KB
MD56a8dd9aa466ca9b82de5f00bbd9ed724
SHA1de8203b0fd3d05c6051234798c114ccf73bc1eaa
SHA256777ed84c4a16f8a9f64a5678899245ed3ab912e854472b48cffd6cbeb7c133ed
SHA5128590e91cc92c850da637a233c70fbe435e4bcd714c8bb26ce84f27f4395fde6ba5b6a964f79eb7149d0b51a3e9462370048961395b451e86ff4a230843b3120f
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Filesize
5KB
MD56a8dd9aa466ca9b82de5f00bbd9ed724
SHA1de8203b0fd3d05c6051234798c114ccf73bc1eaa
SHA256777ed84c4a16f8a9f64a5678899245ed3ab912e854472b48cffd6cbeb7c133ed
SHA5128590e91cc92c850da637a233c70fbe435e4bcd714c8bb26ce84f27f4395fde6ba5b6a964f79eb7149d0b51a3e9462370048961395b451e86ff4a230843b3120f
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Filesize
5KB
MD56a8dd9aa466ca9b82de5f00bbd9ed724
SHA1de8203b0fd3d05c6051234798c114ccf73bc1eaa
SHA256777ed84c4a16f8a9f64a5678899245ed3ab912e854472b48cffd6cbeb7c133ed
SHA5128590e91cc92c850da637a233c70fbe435e4bcd714c8bb26ce84f27f4395fde6ba5b6a964f79eb7149d0b51a3e9462370048961395b451e86ff4a230843b3120f
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Filesize
5KB
MD56a8dd9aa466ca9b82de5f00bbd9ed724
SHA1de8203b0fd3d05c6051234798c114ccf73bc1eaa
SHA256777ed84c4a16f8a9f64a5678899245ed3ab912e854472b48cffd6cbeb7c133ed
SHA5128590e91cc92c850da637a233c70fbe435e4bcd714c8bb26ce84f27f4395fde6ba5b6a964f79eb7149d0b51a3e9462370048961395b451e86ff4a230843b3120f