Analysis
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max time kernel
150s -
max time network
127s -
platform
windows7_x64 -
resource
win7-20230831-en -
resource tags
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submitted
12-09-2023 06:56
General
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Target
7e8b8c909f96c4058a7e8f7acd171a78.exe
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Size
382KB
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MD5
7e8b8c909f96c4058a7e8f7acd171a78
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SHA1
a0f2cc3a7fcb60f7389ee4555dbddc2ad5822c7e
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SHA256
2a50a42d3c44e6e3890a53228cb84f6fdb17e38b31422c68b8634a06d36cc324
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SHA512
5959a1b5e03f4b6d7ce837fab5bdce52ef8073666a4445e7d49904e252cf9d9233355bbd54eefd449528070de43d0f64b47bbef8160e2fee4a0dda292520c922
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SSDEEP
6144:MemFwi7Aaj8cDtp5adXbu7FK6jT92wiGgYP91k0dMENe2RurYEhM9+:Mnwi7RDtja5qN2PRYk0d/VRl
Malware Config
Extracted
C:\info.hta
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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Renames multiple (312) 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\7e8b8c909f96c4058a7e8f7acd171a78.exe"C:\Users\Admin\AppData\Local\Temp\7e8b8c909f96c4058a7e8f7acd171a78.exe"1⤵
- 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\7e8b8c909f96c4058a7e8f7acd171a78.exeC:\Users\Admin\AppData\Local\Temp\7e8b8c909f96c4058a7e8f7acd171a78.exe2⤵
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C:\Users\Admin\AppData\Local\Temp\7e8b8c909f96c4058a7e8f7acd171a78.exeC:\Users\Admin\AppData\Local\Temp\7e8b8c909f96c4058a7e8f7acd171a78.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\7e8b8c909f96c4058a7e8f7acd171a78.exe"C:\Users\Admin\AppData\Local\Temp\7e8b8c909f96c4058a7e8f7acd171a78.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\7e8b8c909f96c4058a7e8f7acd171a78.exeC:\Users\Admin\AppData\Local\Temp\7e8b8c909f96c4058a7e8f7acd171a78.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\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\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\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\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
MD5e66b2a2679ae1bd6fa2a5903f8646988
SHA136ac3a33cbb1da857b1cb7edb13ff40e4a1cd148
SHA25667c47b961f42c4743bcdadf3c53e012160574f26d50b42ee9938065feaea852b
SHA512c5142b9d12392eeeed819ee260cf9e014cf0663164d0e9320799a209bd4b9810a555bad4f1977e9b7334121dbab04140f78e8f83788eca6e0da0659efb37cd04
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Filesize
5KB
MD591d6bc61af31d596430ef36b4cfbddae
SHA1af8b441698120e82a4d36d914c7cdf436bb4c615
SHA2560e3487e5a6f9b4f9a9952f3b558f21bd280a066dd55958de4664b8b9db58ebf0
SHA512545f53a0307dc0189b5cabe28d8ccac3cfbfd3a37b4f1b6fa7f8b072c0bae54d3decb8da1a686d32f0ec390df57c6427c37a4cfd3b347bf47c99c8a1086afafe
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Filesize
5KB
MD591d6bc61af31d596430ef36b4cfbddae
SHA1af8b441698120e82a4d36d914c7cdf436bb4c615
SHA2560e3487e5a6f9b4f9a9952f3b558f21bd280a066dd55958de4664b8b9db58ebf0
SHA512545f53a0307dc0189b5cabe28d8ccac3cfbfd3a37b4f1b6fa7f8b072c0bae54d3decb8da1a686d32f0ec390df57c6427c37a4cfd3b347bf47c99c8a1086afafe
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Filesize
5KB
MD591d6bc61af31d596430ef36b4cfbddae
SHA1af8b441698120e82a4d36d914c7cdf436bb4c615
SHA2560e3487e5a6f9b4f9a9952f3b558f21bd280a066dd55958de4664b8b9db58ebf0
SHA512545f53a0307dc0189b5cabe28d8ccac3cfbfd3a37b4f1b6fa7f8b072c0bae54d3decb8da1a686d32f0ec390df57c6427c37a4cfd3b347bf47c99c8a1086afafe
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Filesize
5KB
MD591d6bc61af31d596430ef36b4cfbddae
SHA1af8b441698120e82a4d36d914c7cdf436bb4c615
SHA2560e3487e5a6f9b4f9a9952f3b558f21bd280a066dd55958de4664b8b9db58ebf0
SHA512545f53a0307dc0189b5cabe28d8ccac3cfbfd3a37b4f1b6fa7f8b072c0bae54d3decb8da1a686d32f0ec390df57c6427c37a4cfd3b347bf47c99c8a1086afafe
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Filesize
5KB
MD591d6bc61af31d596430ef36b4cfbddae
SHA1af8b441698120e82a4d36d914c7cdf436bb4c615
SHA2560e3487e5a6f9b4f9a9952f3b558f21bd280a066dd55958de4664b8b9db58ebf0
SHA512545f53a0307dc0189b5cabe28d8ccac3cfbfd3a37b4f1b6fa7f8b072c0bae54d3decb8da1a686d32f0ec390df57c6427c37a4cfd3b347bf47c99c8a1086afafe
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Filesize
408KB
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Filesize
6.9MB
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Filesize
280KB
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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
280KB
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Filesize
256KB
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Filesize
6.9MB
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Filesize
408KB
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Filesize
6.9MB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
4KB
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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
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
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Filesize
4KB