Analysis
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max time kernel
151s -
max time network
154s -
platform
windows10-2004_x64 -
resource
win10v2004-20230831-en -
resource tags
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submitted
07-09-2023 06:31
General
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Target
cb0f99306d05042b8b3db064ac3489b9.exe
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Size
628KB
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MD5
cb0f99306d05042b8b3db064ac3489b9
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SHA1
1a5e8b4435f97dfd09b764c82dba35868e792803
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SHA256
71bd706cc0ace3774449282a9c1de5403f8f43dad118b9fbf4fc45cf4894f8e9
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SHA512
fd69834d9da70fda36478de8106f288b7c7be48029a8ccc1fbc6ae8a7b4c3d47e189f262c525abad7a87ba1ed784adb57ae20794e6445af7c4d16185f5cafd41
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SSDEEP
12288:nOifrg3Pq0mw2Jgc75Tn9hTMK6OHjuy+X4SsDca7nF7Z30G:A3sw2JjyK6zy+Xv8nF7ZEG
Malware Config
Extracted
C:\info.hta
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 (594) 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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Suspicious use of SetThreadContext 2 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 62 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\cb0f99306d05042b8b3db064ac3489b9.exe"C:\Users\Admin\AppData\Local\Temp\cb0f99306d05042b8b3db064ac3489b9.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\cb0f99306d05042b8b3db064ac3489b9.exeC:\Users\Admin\AppData\Local\Temp\cb0f99306d05042b8b3db064ac3489b9.exe2⤵
- 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\cb0f99306d05042b8b3db064ac3489b9.exe"C:\Users\Admin\AppData\Local\Temp\cb0f99306d05042b8b3db064ac3489b9.exe"3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\cb0f99306d05042b8b3db064ac3489b9.exeC:\Users\Admin\AppData\Local\Temp\cb0f99306d05042b8b3db064ac3489b9.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\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\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\SysWOW64\mshta.exe"C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\info.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}3⤵
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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}3⤵
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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}3⤵
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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}3⤵
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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 Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Privilege Escalation
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
3.2MB
MD5303c6065ff66d75529d8b9bcf62ead66
SHA147576f91def81b2a0d6e495d46903573e6fe9aa7
SHA2565d2c3e399bdcbee4923fb524e1a1f4ad990fb0f3f789c96badcea05148f47c50
SHA51276fa26e1b07e74c1f526456e863afb95a5a941bd9370c685db1d0ce03b75295e1d2ce2e474b25b2c9e6a14557c43682314156f15698484958492a8c44aa6eec1
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Filesize
927B
MD54a911455784f74e368a4c2c7876d76f4
SHA1a1700a0849ffb4f26671eb76da2489946b821c34
SHA256264098e15b5b33d425f3b76e45b7976b58f917048125041135f7e60d8151108c
SHA5124617591400409e1930195795a55e20d5f063042bb3e9fd1955099066e507b6ac8a1e3ae54cc42418e2639149b31bf7e58cd5743670d9030a15e29f14d813815d
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Filesize
5KB
MD53728565c3f04a405059ab5b911c78e13
SHA16ae9aaaf70b2baf23324071465ba5b54d5c2069a
SHA2561d91cc2314cba9def71a348141e7bc2b4b9b7c372eb4971a1cc55e617f362a9b
SHA512e38cec1d136466ac042e0ac2e5f6abc89b752d2fa4d637e5d3f2e87022b42c54679c9ea9e454faac39e3fcad201f174038706623bca2546d9d3d92af9f2cc327
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Filesize
5KB
MD53728565c3f04a405059ab5b911c78e13
SHA16ae9aaaf70b2baf23324071465ba5b54d5c2069a
SHA2561d91cc2314cba9def71a348141e7bc2b4b9b7c372eb4971a1cc55e617f362a9b
SHA512e38cec1d136466ac042e0ac2e5f6abc89b752d2fa4d637e5d3f2e87022b42c54679c9ea9e454faac39e3fcad201f174038706623bca2546d9d3d92af9f2cc327
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Filesize
5KB
MD53728565c3f04a405059ab5b911c78e13
SHA16ae9aaaf70b2baf23324071465ba5b54d5c2069a
SHA2561d91cc2314cba9def71a348141e7bc2b4b9b7c372eb4971a1cc55e617f362a9b
SHA512e38cec1d136466ac042e0ac2e5f6abc89b752d2fa4d637e5d3f2e87022b42c54679c9ea9e454faac39e3fcad201f174038706623bca2546d9d3d92af9f2cc327
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Filesize
5KB
MD53728565c3f04a405059ab5b911c78e13
SHA16ae9aaaf70b2baf23324071465ba5b54d5c2069a
SHA2561d91cc2314cba9def71a348141e7bc2b4b9b7c372eb4971a1cc55e617f362a9b
SHA512e38cec1d136466ac042e0ac2e5f6abc89b752d2fa4d637e5d3f2e87022b42c54679c9ea9e454faac39e3fcad201f174038706623bca2546d9d3d92af9f2cc327
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Filesize
5KB
MD53728565c3f04a405059ab5b911c78e13
SHA16ae9aaaf70b2baf23324071465ba5b54d5c2069a
SHA2561d91cc2314cba9def71a348141e7bc2b4b9b7c372eb4971a1cc55e617f362a9b
SHA512e38cec1d136466ac042e0ac2e5f6abc89b752d2fa4d637e5d3f2e87022b42c54679c9ea9e454faac39e3fcad201f174038706623bca2546d9d3d92af9f2cc327
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Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
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Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
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Filesize
76KB
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Filesize
7.7MB
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Filesize
7.7MB
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Filesize
5.6MB
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Filesize
64KB
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Filesize
656KB
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Filesize
7.7MB
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Filesize
64KB
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Filesize
7.7MB
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Filesize
76KB