Analysis
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max time kernel
151s -
max time network
156s -
platform
windows10-2004_x64 -
resource
win10v2004-20230915-en -
resource tags
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submitted
13-10-2023 21:38
General
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Target
42553b52c33d2b5f8a747819d0bf97d5.exe
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Size
602KB
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MD5
42553b52c33d2b5f8a747819d0bf97d5
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SHA1
ae1bc8822e41c65caedc07dd98b0d9156e2a28cd
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SHA256
d4cb20dba15d88c38c35be69fe04538b4f9bb0a12edb51ff23c0171b584edf08
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SHA512
5ed02973a1a88dc4835a933e84d422ecad64dd33645d4621ecd396a8786269c7616b5e68a6744912c5f3bc831a1b897b89306b773577c90dfbf766e1186ffe4c
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SSDEEP
12288:k1gLpE124JdB+jegjTfWU3qU8FyFTdeQUSonYLVqY2Vi:HaM4JaSMoF4deLgVKQ
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 (215) 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) 4 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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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 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 51 IoCs
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Suspicious use of WriteProcessMemory 38 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\42553b52c33d2b5f8a747819d0bf97d5.exe"C:\Users\Admin\AppData\Local\Temp\42553b52c33d2b5f8a747819d0bf97d5.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\42553b52c33d2b5f8a747819d0bf97d5.exeC:\Users\Admin\AppData\Local\Temp\42553b52c33d2b5f8a747819d0bf97d5.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\42553b52c33d2b5f8a747819d0bf97d5.exe"C:\Users\Admin\AppData\Local\Temp\42553b52c33d2b5f8a747819d0bf97d5.exe"3⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\42553b52c33d2b5f8a747819d0bf97d5.exeC:\Users\Admin\AppData\Local\Temp\42553b52c33d2b5f8a747819d0bf97d5.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\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 Matrix ATT&CK v13
Persistence
Create or Modify System Process
1Windows Service
1Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Privilege Escalation
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\AppvIsvSubsystems64.dll.id[66B9D28A-3483].[[email protected]].8baseFilesize
3.2MB
MD5ec80c09de67b93237b7617cc7891edd7
SHA1d3eb92825c8f7dcd8b36423cf5f4986762ec947e
SHA256473edbf01b426775593fe8e2a10bed2f8878df9133f1405abca802467871024b
SHA5121c76c1f8f1ef816e408bdfb95f1db3c1795eff964197bce98bbe1513e77ab4c6b3c7d353a213b51c737452ede31d12b0e84445b13e20cb1f32c0416c1cc95956
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C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\42553b52c33d2b5f8a747819d0bf97d5.exe.logFilesize
927B
MD5ff27e87d4bf1330435001e57e8244d60
SHA1b22264ed3cd4d35f8236278edd2512c3b7ecb355
SHA2567e9adf70ba438f8a38feac34e1b25bb4261fa506d00361ea7e5cde784651474e
SHA512d678aa2b42032ea0d811f9783abff7c94a6d674bd3dee74df706b7f95da7e51d84207320ea36226da4f8651e6ec618ea12d99d2d6d371bd1e98395518b8956e0
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memory/1180-34-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/1180-623-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/1180-1926-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/1180-33-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/1180-529-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/1180-38-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/1180-8-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/1180-11-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/1180-12-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/1180-225-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/1180-197-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/1180-43-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/1180-64-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/1180-142-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/1180-39-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/1180-176-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/1180-132-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/1180-136-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/1180-141-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/1180-36-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/1180-56-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/3336-21-0x0000000074710000-0x0000000074EC0000-memory.dmpFilesize
7.7MB
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memory/3336-16-0x0000000005390000-0x00000000053A0000-memory.dmpFilesize
64KB
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memory/3336-15-0x0000000074710000-0x0000000074EC0000-memory.dmpFilesize
7.7MB
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memory/3984-13-0x0000000074670000-0x0000000074E20000-memory.dmpFilesize
7.7MB
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memory/3984-7-0x0000000005B20000-0x0000000005B6C000-memory.dmpFilesize
304KB
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memory/3984-5-0x0000000005A60000-0x0000000005AA6000-memory.dmpFilesize
280KB
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memory/3984-1-0x0000000000FA0000-0x000000000103C000-memory.dmpFilesize
624KB
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memory/3984-2-0x0000000006090000-0x0000000006634000-memory.dmpFilesize
5.6MB
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memory/3984-3-0x0000000005970000-0x0000000005980000-memory.dmpFilesize
64KB
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memory/3984-6-0x0000000005AE0000-0x0000000005B14000-memory.dmpFilesize
208KB
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memory/3984-0-0x0000000074670000-0x0000000074E20000-memory.dmpFilesize
7.7MB
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memory/3984-4-0x00000000059A0000-0x00000000059EC000-memory.dmpFilesize
304KB
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memory/4488-24-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/4488-20-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB