Analysis
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max time kernel
204s -
max time network
210s -
platform
windows10-2004_x64 -
resource
win10v2004-20230915-en -
resource tags
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submitted
18-10-2023 07:26
General
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Target
fd59543a425d2159dfadba8efd4d40178b609ef123a8bc5cf00fe3afef95623d.exe
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Size
285KB
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MD5
4db1b428d0e115a810836f937d786f38
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SHA1
35e8722f5bf1997d6022fa512f60458470a8999e
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SHA256
fd59543a425d2159dfadba8efd4d40178b609ef123a8bc5cf00fe3afef95623d
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SHA512
091491e4cb375eceadcff843cef080815b1f802e0182d260d750f7afc8197eb09461ed9b119b04eff0839c627d2630bfb1e9409de0da12086e2d15bb12565109
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SSDEEP
6144:mlVD0j3qci00ei4m4d3hJkuRi7g9BOu6xb4YnDy:X2cibT4d3hJLUWwu6F4YW
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 (54) 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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Adds Run key to start application 2 TTPs 2 IoCs
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Drops desktop.ini file(s) 3 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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Drops file in Windows directory 3 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 48 IoCs
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Suspicious use of WriteProcessMemory 38 IoCs
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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\fd59543a425d2159dfadba8efd4d40178b609ef123a8bc5cf00fe3afef95623d.exe"C:\Users\Admin\AppData\Local\Temp\fd59543a425d2159dfadba8efd4d40178b609ef123a8bc5cf00fe3afef95623d.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\fd59543a425d2159dfadba8efd4d40178b609ef123a8bc5cf00fe3afef95623d.exeC:\Users\Admin\AppData\Local\Temp\fd59543a425d2159dfadba8efd4d40178b609ef123a8bc5cf00fe3afef95623d.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\fd59543a425d2159dfadba8efd4d40178b609ef123a8bc5cf00fe3afef95623d.exe"C:\Users\Admin\AppData\Local\Temp\fd59543a425d2159dfadba8efd4d40178b609ef123a8bc5cf00fe3afef95623d.exe"3⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\fd59543a425d2159dfadba8efd4d40178b609ef123a8bc5cf00fe3afef95623d.exeC:\Users\Admin\AppData\Local\Temp\fd59543a425d2159dfadba8efd4d40178b609ef123a8bc5cf00fe3afef95623d.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
- Drops file in Windows directory
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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⤵
Network
MITRE ATT&CK Matrix ATT&CK v13
Persistence
Create or Modify System Process
1Windows Service
1Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Program Files\Common Files\microsoft shared\ClickToRun\AppvIsvSubsystems32.dll.id[DC7D6C8A-3483].[[email protected]].8baseFilesize
2.7MB
MD5f298191793faf2813e81e4503de3fda6
SHA1b29f22507010edd3afba3615b93ff437cb5ec651
SHA25649b38a18102eeb7badf40c7586d3d41414ae74131594ad7ba03831d0ebc0659d
SHA5128fee98305625299344a57d9b97f67b7a66209ec5c839ab281f4fbc085fa334fc6e0d24b312b30e453d975069114200fe13a52653638dbacc961a3b6309642e40
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C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\fd59543a425d2159dfadba8efd4d40178b609ef123a8bc5cf00fe3afef95623d.exe.logFilesize
927B
MD54a911455784f74e368a4c2c7876d76f4
SHA1a1700a0849ffb4f26671eb76da2489946b821c34
SHA256264098e15b5b33d425f3b76e45b7976b58f917048125041135f7e60d8151108c
SHA5124617591400409e1930195795a55e20d5f063042bb3e9fd1955099066e507b6ac8a1e3ae54cc42418e2639149b31bf7e58cd5743670d9030a15e29f14d813815d
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memory/2116-40-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/2116-9-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/2116-85-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/2116-48-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/2116-80-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/2116-49-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/2116-32-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/2116-330-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/2116-12-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/2116-13-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/2116-44-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/2116-611-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/2116-37-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/2116-34-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/2116-35-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/3756-22-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/4048-7-0x0000000005630000-0x0000000005640000-memory.dmpFilesize
64KB
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memory/4048-14-0x00000000749B0000-0x0000000075160000-memory.dmpFilesize
7.7MB
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memory/4048-8-0x0000000005BF0000-0x0000000006194000-memory.dmpFilesize
5.6MB
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memory/4048-0-0x0000000000B10000-0x0000000000B5E000-memory.dmpFilesize
312KB
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memory/4048-6-0x00000000749B0000-0x0000000075160000-memory.dmpFilesize
7.7MB
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memory/4048-5-0x0000000005570000-0x00000000055BC000-memory.dmpFilesize
304KB
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memory/4048-4-0x0000000005530000-0x0000000005564000-memory.dmpFilesize
208KB
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memory/4048-3-0x0000000005630000-0x0000000005640000-memory.dmpFilesize
64KB
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memory/4048-2-0x00000000054D0000-0x0000000005516000-memory.dmpFilesize
280KB
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memory/4048-1-0x00000000749B0000-0x0000000075160000-memory.dmpFilesize
7.7MB
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memory/4792-21-0x0000000074A50000-0x0000000075200000-memory.dmpFilesize
7.7MB
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memory/4792-17-0x00000000054B0000-0x00000000054C0000-memory.dmpFilesize
64KB
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memory/4792-16-0x0000000074A50000-0x0000000075200000-memory.dmpFilesize
7.7MB