Analysis
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max time kernel
150s -
max time network
121s -
platform
windows7_x64 -
resource
win7-20230831-en -
resource tags
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submitted
06-10-2023 09:00
General
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Target
1f7dd42295e1d8059c9cae2eff17109e.exe
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Size
488KB
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MD5
1f7dd42295e1d8059c9cae2eff17109e
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SHA1
1d59046ef6c7d204e6ac74337ef534e3f9bd237c
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SHA256
88f6a6455f92255a189526e36aeb581c95c28dc5e26357e7667f871444a336ba
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SHA512
ee7c8017e3422d7749c60a16a231e7960bf9068dec4dd49b9ae6f62016c6de369f9473c1a95957a22f5ef3ce535464b21a2160bed1babf88714ce32a55bdf176
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SSDEEP
12288:RB9V0qCM18GVE8Swslkv92SCijw80Qqcasw4RQ5E5YG:RB9u9m8OsavESCwZNqcas+
Malware Config
Extracted
C:\Users\Public\Desktop\info.hta
class='mark'>[email protected]</span></div>
http://www.w3.org/TR/html4/strict.dtd'>
Extracted
C:\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 (316) 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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Suspicious use of SetThreadContext 2 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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Suspicious behavior: EnumeratesProcesses 64 IoCs
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Suspicious use of AdjustPrivilegeToken 64 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\1f7dd42295e1d8059c9cae2eff17109e.exe"C:\Users\Admin\AppData\Local\Temp\1f7dd42295e1d8059c9cae2eff17109e.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\1f7dd42295e1d8059c9cae2eff17109e.exeC:\Users\Admin\AppData\Local\Temp\1f7dd42295e1d8059c9cae2eff17109e.exe2⤵
- 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\1f7dd42295e1d8059c9cae2eff17109e.exe"C:\Users\Admin\AppData\Local\Temp\1f7dd42295e1d8059c9cae2eff17109e.exe"3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\1f7dd42295e1d8059c9cae2eff17109e.exeC:\Users\Admin\AppData\Local\Temp\1f7dd42295e1d8059c9cae2eff17109e.exe4⤵
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C:\Users\Admin\AppData\Local\Temp\1f7dd42295e1d8059c9cae2eff17109e.exeC:\Users\Admin\AppData\Local\Temp\1f7dd42295e1d8059c9cae2eff17109e.exe4⤵
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C:\Users\Admin\AppData\Local\Temp\1f7dd42295e1d8059c9cae2eff17109e.exeC:\Users\Admin\AppData\Local\Temp\1f7dd42295e1d8059c9cae2eff17109e.exe4⤵
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C:\Windows\system32\cmd.exe"C:\Windows\system32\cmd.exe"3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
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C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
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C:\Windows\system32\cmd.exe"C:\Windows\system32\cmd.exe"3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\netsh.exenetsh advfirewall set currentprofile state off4⤵
- Modifies Windows Firewall
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C:\Windows\system32\netsh.exenetsh firewall set opmode mode=disable4⤵
- Modifies Windows Firewall
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C:\Windows\SysWOW64\mshta.exe"C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\info.hta"3⤵
- Modifies Internet Explorer settings
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C:\Windows\SysWOW64\mshta.exe"C:\Windows\SysWOW64\mshta.exe" "C:\users\public\desktop\info.hta"3⤵
- Modifies Internet Explorer settings
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C:\Windows\SysWOW64\mshta.exe"C:\Windows\SysWOW64\mshta.exe" "C:\info.hta"3⤵
- Modifies Internet Explorer settings
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C:\Windows\SysWOW64\mshta.exe"C:\Windows\SysWOW64\mshta.exe" "F:\info.hta"3⤵
- Modifies Internet Explorer settings
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C:\Windows\system32\cmd.exe"C:\Windows\system32\cmd.exe"3⤵
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C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
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C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- 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⤵
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
MD5ecacc1e7665ea740b93cc3c3e0a27ee0
SHA15cb16af9898241b445dcefdbb34cdf04bb97ab48
SHA256f74e137c971527f5d7daf76b296dbff20d3f0dbd8c4e8f023f590842563eb89d
SHA5124cab811ec8236651ff012fe7ef90dda8dfb2991fd6e9355245335e8be6335c3d68f663b0db319b974c8444f869de0076f6e9097a796eeaec2a9670f94f58f916
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Filesize
5KB
MD51af93ff53ff860c9868f493597facbc0
SHA1d48b7b6aa93cb6d4c1f363f0dd1f23e0409252b3
SHA256427a838ca1d0e5163654557754a162de7cf2529655b6af0cdd0b6f0b071d586f
SHA512c33b8e33e20a8b257b9c4d2bb62fac04c219ed7bbb45f87508a49a137c01f7ef856f388850e4a3e5a9edfb0554a8947ff61cd24a63eea6bfa958e2b3f7a0ae84
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Filesize
5KB
MD51af93ff53ff860c9868f493597facbc0
SHA1d48b7b6aa93cb6d4c1f363f0dd1f23e0409252b3
SHA256427a838ca1d0e5163654557754a162de7cf2529655b6af0cdd0b6f0b071d586f
SHA512c33b8e33e20a8b257b9c4d2bb62fac04c219ed7bbb45f87508a49a137c01f7ef856f388850e4a3e5a9edfb0554a8947ff61cd24a63eea6bfa958e2b3f7a0ae84
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Filesize
5KB
MD51af93ff53ff860c9868f493597facbc0
SHA1d48b7b6aa93cb6d4c1f363f0dd1f23e0409252b3
SHA256427a838ca1d0e5163654557754a162de7cf2529655b6af0cdd0b6f0b071d586f
SHA512c33b8e33e20a8b257b9c4d2bb62fac04c219ed7bbb45f87508a49a137c01f7ef856f388850e4a3e5a9edfb0554a8947ff61cd24a63eea6bfa958e2b3f7a0ae84
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Filesize
5KB
MD51af93ff53ff860c9868f493597facbc0
SHA1d48b7b6aa93cb6d4c1f363f0dd1f23e0409252b3
SHA256427a838ca1d0e5163654557754a162de7cf2529655b6af0cdd0b6f0b071d586f
SHA512c33b8e33e20a8b257b9c4d2bb62fac04c219ed7bbb45f87508a49a137c01f7ef856f388850e4a3e5a9edfb0554a8947ff61cd24a63eea6bfa958e2b3f7a0ae84
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Filesize
5KB
MD51af93ff53ff860c9868f493597facbc0
SHA1d48b7b6aa93cb6d4c1f363f0dd1f23e0409252b3
SHA256427a838ca1d0e5163654557754a162de7cf2529655b6af0cdd0b6f0b071d586f
SHA512c33b8e33e20a8b257b9c4d2bb62fac04c219ed7bbb45f87508a49a137c01f7ef856f388850e4a3e5a9edfb0554a8947ff61cd24a63eea6bfa958e2b3f7a0ae84
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Filesize
6.9MB
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Filesize
304KB
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Filesize
208KB
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Filesize
280KB
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Filesize
256KB
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Filesize
6.9MB
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Filesize
512KB
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
4KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
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Filesize
6.9MB
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Filesize
280KB
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Filesize
512KB
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Filesize
76KB
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Filesize
4KB