Resubmissions
25-09-2023 22:46
230925-2p3nxsdg76 1025-09-2023 22:43
230925-2ndy6sce7w 1025-09-2023 18:36
230925-w86a9sbe46 1021-09-2023 05:19
230921-fz1fnafe26 10Analysis
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max time kernel
150s -
max time network
124s -
platform
windows7_x64 -
resource
win7-20230831-en -
resource tags
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submitted
25-09-2023 18:36
General
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Target
1.exe
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Size
56KB
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MD5
207334ec40b616948c5670272ebc3037
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SHA1
788910e883058ef9df86528a966528caf63eb29c
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SHA256
ebbbc1d293ce864c83cf874c3f8051dd636bd1303f013d3fa0cc97eada3266ac
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SHA512
c8c452737dd3399eadd7cce0a6b9bcd736d2dd226a5a0af21c360c6167a1d309c1e186199880998d9a017e2dec5a33846d70007814587824bae8cd2bd2c85e49
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SSDEEP
1536:MNeRBl5PT/rx1mzwRMSTdLpJBH3T+rZz:MQRrmzwR5JVM
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'>
Extracted
F:\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 (315) 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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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\1.exe"C:\Users\Admin\AppData\Local\Temp\1.exe"1⤵
- 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\1.exe"C:\Users\Admin\AppData\Local\Temp\1.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\netsh.exenetsh advfirewall set currentprofile state off3⤵
- Modifies Windows Firewall
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C:\Windows\system32\netsh.exenetsh firewall set opmode mode=disable3⤵
- Modifies Windows Firewall
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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\SysWOW64\mshta.exe"C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\info.hta"2⤵
- Modifies Internet Explorer settings
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C:\Windows\SysWOW64\mshta.exe"C:\Windows\SysWOW64\mshta.exe" "C:\users\public\desktop\info.hta"2⤵
- Modifies Internet Explorer settings
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C:\Windows\SysWOW64\mshta.exe"C:\Windows\SysWOW64\mshta.exe" "C:\info.hta"2⤵
- Modifies Internet Explorer settings
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C:\Windows\SysWOW64\mshta.exe"C:\Windows\SysWOW64\mshta.exe" "F:\info.hta"2⤵
- Modifies Internet Explorer settings
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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⤵
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
MD5a8ea4b7c97af8fc40124be42b61e2189
SHA1fb1a82e5a83095f3c943a99f5d69f3843a7d2be0
SHA256f5fa0c583b5bdf9777a2e079c3b842f467426f6233bd6b04acc5173b195b37e0
SHA512af3e926df917df8fde80e1a1fa042c3879641ed85067b4d42fe4d145972ca9bfdb33f8e60bfa9068a7145396e9861ad25a65dd059797125a61cfd9f6261f55d1
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Filesize
5KB
MD51d9ff7df121e1e32a63ae6431bc91bce
SHA1aa2605f993e60e82383de40588b8a86c0ddf3778
SHA2569fe265033b2cbd9b0c6844facb3eb867c693a3e3bf13d41b2394c2b5155e9e22
SHA51238f62b86fb881ff67b1caacb1130ec8e5d43cf0ff701349e1c397389fcabf8cd2635fadfd3f5b7def9200519eccb65bc08f49d7eb0f9355cf9cdcfda6db10c67
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Filesize
5KB
MD51d9ff7df121e1e32a63ae6431bc91bce
SHA1aa2605f993e60e82383de40588b8a86c0ddf3778
SHA2569fe265033b2cbd9b0c6844facb3eb867c693a3e3bf13d41b2394c2b5155e9e22
SHA51238f62b86fb881ff67b1caacb1130ec8e5d43cf0ff701349e1c397389fcabf8cd2635fadfd3f5b7def9200519eccb65bc08f49d7eb0f9355cf9cdcfda6db10c67
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Filesize
5KB
MD51d9ff7df121e1e32a63ae6431bc91bce
SHA1aa2605f993e60e82383de40588b8a86c0ddf3778
SHA2569fe265033b2cbd9b0c6844facb3eb867c693a3e3bf13d41b2394c2b5155e9e22
SHA51238f62b86fb881ff67b1caacb1130ec8e5d43cf0ff701349e1c397389fcabf8cd2635fadfd3f5b7def9200519eccb65bc08f49d7eb0f9355cf9cdcfda6db10c67
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Filesize
5KB
MD51d9ff7df121e1e32a63ae6431bc91bce
SHA1aa2605f993e60e82383de40588b8a86c0ddf3778
SHA2569fe265033b2cbd9b0c6844facb3eb867c693a3e3bf13d41b2394c2b5155e9e22
SHA51238f62b86fb881ff67b1caacb1130ec8e5d43cf0ff701349e1c397389fcabf8cd2635fadfd3f5b7def9200519eccb65bc08f49d7eb0f9355cf9cdcfda6db10c67
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Filesize
5KB
MD51d9ff7df121e1e32a63ae6431bc91bce
SHA1aa2605f993e60e82383de40588b8a86c0ddf3778
SHA2569fe265033b2cbd9b0c6844facb3eb867c693a3e3bf13d41b2394c2b5155e9e22
SHA51238f62b86fb881ff67b1caacb1130ec8e5d43cf0ff701349e1c397389fcabf8cd2635fadfd3f5b7def9200519eccb65bc08f49d7eb0f9355cf9cdcfda6db10c67