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
156s -
platform
windows10-2004_x64 -
resource
win10v2004-20230915-en -
resource tags
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submitted
21-09-2023 05:19
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
C:\users\public\desktop\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 (590) 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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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
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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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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 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\1.exe"C:\Users\Admin\AppData\Local\Temp\1.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
- Modifies registry class
- 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" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}2⤵
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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⤵
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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⤵
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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⤵
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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
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[66066284-3344].[[email protected]].ElbieFilesize
3.2MB
MD52f99d0e79eecb792720f2942166001a5
SHA14601984fa1e79bd055fd9b4bfa76a832b43b05b9
SHA2562a9d26d0d60b4de5343c3bd7073f33c0c9570f47aaf02f30bf9091d9437d5af1
SHA5122c43dccf2a40f490a9a0d15ffc2b86720449a05eb8514db13a7fe802aa98fbe416b6ed23180fde865ebe04067ded2c7712f160bb56c0a999a4928408504967d1
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C:\Users\Admin\Desktop\info.htaFilesize
5KB
MD56cb4cd1c3c6e18f8b2900a23512b3e04
SHA12f578594075411ad07b6e304b47944421609fd31
SHA2566808fa40f9f308466d74bbf5cf38cbc9a6dfcba390381e990c9ac16cb5827e8d
SHA512ad946b0fb39978343fa3dd42b693f6211f81ae7653517ef923cb61cbe37604eaf5de52942774177235438ed5840b5bbda630fa469ace2ba797fda1bfdeb0c33b
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C:\info.htaFilesize
5KB
MD56cb4cd1c3c6e18f8b2900a23512b3e04
SHA12f578594075411ad07b6e304b47944421609fd31
SHA2566808fa40f9f308466d74bbf5cf38cbc9a6dfcba390381e990c9ac16cb5827e8d
SHA512ad946b0fb39978343fa3dd42b693f6211f81ae7653517ef923cb61cbe37604eaf5de52942774177235438ed5840b5bbda630fa469ace2ba797fda1bfdeb0c33b
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C:\info.htaFilesize
5KB
MD56cb4cd1c3c6e18f8b2900a23512b3e04
SHA12f578594075411ad07b6e304b47944421609fd31
SHA2566808fa40f9f308466d74bbf5cf38cbc9a6dfcba390381e990c9ac16cb5827e8d
SHA512ad946b0fb39978343fa3dd42b693f6211f81ae7653517ef923cb61cbe37604eaf5de52942774177235438ed5840b5bbda630fa469ace2ba797fda1bfdeb0c33b
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C:\users\public\desktop\info.htaFilesize
5KB
MD56cb4cd1c3c6e18f8b2900a23512b3e04
SHA12f578594075411ad07b6e304b47944421609fd31
SHA2566808fa40f9f308466d74bbf5cf38cbc9a6dfcba390381e990c9ac16cb5827e8d
SHA512ad946b0fb39978343fa3dd42b693f6211f81ae7653517ef923cb61cbe37604eaf5de52942774177235438ed5840b5bbda630fa469ace2ba797fda1bfdeb0c33b
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F:\info.htaFilesize
5KB
MD56cb4cd1c3c6e18f8b2900a23512b3e04
SHA12f578594075411ad07b6e304b47944421609fd31
SHA2566808fa40f9f308466d74bbf5cf38cbc9a6dfcba390381e990c9ac16cb5827e8d
SHA512ad946b0fb39978343fa3dd42b693f6211f81ae7653517ef923cb61cbe37604eaf5de52942774177235438ed5840b5bbda630fa469ace2ba797fda1bfdeb0c33b