Analysis
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max time kernel
150s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20230831-en -
resource tags
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submitted
13-10-2023 22:02
General
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Target
f595f91a9966808cc85d11981e66e98043af9aeaaaa3893ef058b9a79c474f17.exe
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Size
629KB
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MD5
9b6470fcbb02fa19344e2f3b142f5038
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SHA1
3307c3ae97ed6be889720949083f93017d1a6675
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SHA256
f595f91a9966808cc85d11981e66e98043af9aeaaaa3893ef058b9a79c474f17
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SHA512
f44a6dc0d52bb0cdc5f34a67c608d0ebbcb6e370b2c078095b3a51670a4b07713762c9998949a6c3c451af482ca41a364d2aeb5f6b1bc4a6cedd8a6f8d7586f1
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SSDEEP
12288:Nwd3Bisv9NE1llpPykGRr9VXbtp/SH6UGk02AmuqpFIFYN9xc:uLv9NU/lyFRVXbniw2AI/0
Malware Config
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 2 IoCs
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Renames multiple (164) 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 1 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 1 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) 13 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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Program crash 1 IoCs
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Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
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Suspicious behavior: EnumeratesProcesses 64 IoCs
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Suspicious use of AdjustPrivilegeToken 49 IoCs
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Suspicious use of WriteProcessMemory 55 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\f595f91a9966808cc85d11981e66e98043af9aeaaaa3893ef058b9a79c474f17.exe"C:\Users\Admin\AppData\Local\Temp\f595f91a9966808cc85d11981e66e98043af9aeaaaa3893ef058b9a79c474f17.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\f595f91a9966808cc85d11981e66e98043af9aeaaaa3893ef058b9a79c474f17.exeC:\Users\Admin\AppData\Local\Temp\f595f91a9966808cc85d11981e66e98043af9aeaaaa3893ef058b9a79c474f17.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\f595f91a9966808cc85d11981e66e98043af9aeaaaa3893ef058b9a79c474f17.exe"C:\Users\Admin\AppData\Local\Temp\f595f91a9966808cc85d11981e66e98043af9aeaaaa3893ef058b9a79c474f17.exe"3⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\f595f91a9966808cc85d11981e66e98043af9aeaaaa3893ef058b9a79c474f17.exeC:\Users\Admin\AppData\Local\Temp\f595f91a9966808cc85d11981e66e98043af9aeaaaa3893ef058b9a79c474f17.exe4⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 828 -s 1645⤵
- Program crash
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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\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\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
MD59ce7e5d7c83685ec26c99b48eb2f0283
SHA1843468c243c523935137ede0991fce14123c1ac0
SHA2561dde58bf064eeccb8376cae7a5efb0789200897a5b792ef0322e282de9d961e2
SHA51246884c451615b525a85ed6dec38f66e6e0274fdcfb0dc61dbf242990131c13ba34261f448387beca5ef8c7664d80ab7bb6af91f14e407971039492759c008084
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Filesize
4KB
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Filesize
6.9MB
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Filesize
6.9MB
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Filesize
256KB
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Filesize
352KB
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Filesize
280KB
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Filesize
208KB
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Filesize
304KB
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Filesize
656KB
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Filesize
76KB
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Filesize
76KB
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Filesize
4KB
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB
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Filesize
6.9MB
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Filesize
280KB
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Filesize
256KB
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Filesize
656KB
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Filesize
6.9MB