Analysis
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max time kernel
150s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20240730-en -
resource tags
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submitted
30-07-2024 22:21
General
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Target
2024-07-30_1abe85ead0976834f79ba9a56cbb2422_phobos.exe
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Size
56KB
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MD5
1abe85ead0976834f79ba9a56cbb2422
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SHA1
c6f8a4bdff9df3b2aef9efdead0066f7c1d0e2c2
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SHA256
f40d36cf476c6b13a5d082c616812764f6832a7bf29f73584860157136011c35
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SHA512
ad498b79ee134a7825378896385b3fbbeec7a2ab0c8bf946c34240739252ff4d03cd35f1a9a75a0eaf77241ad07f01737794c3a5e314869bc1094e2a1d30e7fe
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SSDEEP
1536:bNeRBl5PT/rx1mzwRMSTdLpJEBq+B2+E+C6:bQRrmzwR5JH+AS
Malware Config
Extracted
C:\info.hta
class='mark'>[email protected]</span></div>
class='mark'>[email protected]</span></div>
http://www.w3.org/TR/html4/strict.dtd'>
Signatures
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Phobos
Phobos ransomware appeared at the beginning of 2019.
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Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
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Deletes shadow copies 3 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 (530) 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 2 TTPs 2 IoCs
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
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Credentials from Password Stores: Windows Credential Manager 1 TTPs
Suspicious access to Credentials History.
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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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Drops file in Program Files directory 64 IoCs
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Browser Information Discovery 1 TTPs
Enumerate browser information.
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Event Triggered Execution: Netsh Helper DLL 1 TTPs 6 IoCs
Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.
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System Location Discovery: System Language Discovery 1 TTPs 5 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
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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 3 TTPs 2 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
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Modifies registry class 1 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 42 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\2024-07-30_1abe85ead0976834f79ba9a56cbb2422_phobos.exe"C:\Users\Admin\AppData\Local\Temp\2024-07-30_1abe85ead0976834f79ba9a56cbb2422_phobos.exe"1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Drops desktop.ini file(s)
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\2024-07-30_1abe85ead0976834f79ba9a56cbb2422_phobos.exe"C:\Users\Admin\AppData\Local\Temp\2024-07-30_1abe85ead0976834f79ba9a56cbb2422_phobos.exe"2⤵
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C:\Windows\system32\cmd.exe"C:\Windows\system32\cmd.exe"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet3⤵
- Interacts with shadow copies
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete3⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures3⤵
- Modifies boot configuration data using bcdedit
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no3⤵
- Modifies boot configuration data using bcdedit
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C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet3⤵
- Deletes backup catalog
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C:\Windows\system32\cmd.exe"C:\Windows\system32\cmd.exe"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\netsh.exenetsh advfirewall set currentprofile state off3⤵
- Modifies Windows Firewall
- Event Triggered Execution: Netsh Helper DLL
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C:\Windows\system32\netsh.exenetsh firewall set opmode mode=disable3⤵
- Modifies Windows Firewall
- Event Triggered Execution: Netsh Helper DLL
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C:\Windows\SysWOW64\mshta.exe"C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\info.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}2⤵
- System Location Discovery: System Language Discovery
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C:\Windows\SysWOW64\mshta.exe"C:\Windows\SysWOW64\mshta.exe" "C:\users\public\desktop\info.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}2⤵
- System Location Discovery: System Language Discovery
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C:\Windows\SysWOW64\mshta.exe"C:\Windows\SysWOW64\mshta.exe" "C:\info.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}2⤵
- System Location Discovery: System Language Discovery
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C:\Windows\SysWOW64\mshta.exe"C:\Windows\SysWOW64\mshta.exe" "F:\info.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}2⤵
- System Location Discovery: System Language Discovery
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C:\Windows\system32\cmd.exe"C:\Windows\system32\cmd.exe"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet3⤵
- Interacts with shadow copies
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete3⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures3⤵
- Modifies boot configuration data using bcdedit
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no3⤵
- Modifies boot configuration data using bcdedit
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C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet3⤵
- 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
1Event Triggered Execution
1Netsh Helper DLL
1Privilege Escalation
Create or Modify System Process
1Windows Service
1Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Event Triggered Execution
1Netsh Helper DLL
1Defense Evasion
Indicator Removal
3File Deletion
3Impair Defenses
1Disable or Modify System Firewall
1Modify Registry
1Direct Volume Access
1Credential Access
Credentials from Password Stores
2Credentials from Web Browsers
1Windows Credential Manager
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Program Files\Common Files\microsoft shared\ClickToRun\C2R32.dll.id[58096FE4-3544].[[email protected]].faustFilesize
2.7MB
MD5a9e6a659e1fc9bb056434665d6c43aab
SHA1394e9d89eac4a6282e5e158e5cd5932d29b19633
SHA256336856b8c93e38f169f6442ffca561517838d93be2a40bb6e3a9d5be8e5b4664
SHA51243823d9b7535197d7dfe589c1c7bd1e02c3e40dd2faf2dd98c767dcd5d55505dd3869812fadd0616642a92fd1bbbf8519b0c2bc12e448f279d58d6bfd26af0a1
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C:\info.htaFilesize
5KB
MD5643359f9c0ede668878895105a297a2c
SHA10febafe9e27674293bd32c45927cacb99ec5d735
SHA2569ad9528fdee79cded75516970d38bb793110ba267dd5df5fdf0f61a61a413bb6
SHA512554a0cc32f1f679600008c59c989bbd81884b07a00084c46d856e5d3ec092059fa37880f449dcd2f4683b3d5eb8b113df2fcfe1aaf7ac2ff42bb5c6056ff52d8