Analysis
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max time kernel
150s -
max time network
154s -
platform
windows10-2004_x64 -
resource
win10v2004-20230831-en -
resource tags
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submitted
08-09-2023 08:03
General
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Target
8581a33bb410c7674705ca163c6f75ad.exe
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Size
271KB
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MD5
8581a33bb410c7674705ca163c6f75ad
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SHA1
3dd6bb5a8786eb073a6f7d26454a8ddbffbbe48f
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SHA256
104032d8993555a84679746069ad1f8c1365c4a27eaeec732fda76aa62da005a
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SHA512
4519a93e98b555a4eac8c18cb61bd28c862d47d6036362f9776074ae897e621202ad80d28f83686bfe3d185081ebd19ac951183768851f3bf17a403c73624302
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SSDEEP
6144:ymJUPTQVx/LACZmikqYGlJfOuwOFZ/QlUvt0NFQp/TDOkUFahk99:v6cLA0cqYd0FxQlU0Nup/TDOkUFahk9
Malware Config
Extracted
C:\info.hta
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 (471) 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\8581a33bb410c7674705ca163c6f75ad.exe"C:\Users\Admin\AppData\Local\Temp\8581a33bb410c7674705ca163c6f75ad.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\8581a33bb410c7674705ca163c6f75ad.exeC:\Users\Admin\AppData\Local\Temp\8581a33bb410c7674705ca163c6f75ad.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\8581a33bb410c7674705ca163c6f75ad.exe"C:\Users\Admin\AppData\Local\Temp\8581a33bb410c7674705ca163c6f75ad.exe"3⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\8581a33bb410c7674705ca163c6f75ad.exeC:\Users\Admin\AppData\Local\Temp\8581a33bb410c7674705ca163c6f75ad.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
2.7MB
MD5bc927dc4136d83980b46f61d19bb1147
SHA11e8de7fd17962e2c8474f79798a03771636848e0
SHA25632a1b07834e7a25382d7adac06af27c7848370acb23eb370ae725bfbeb9cf8cf
SHA5121edff592b14f19aa3b0d5e0f58b81ecadf1b9e03280f33c1e657398cdd4ea4a4fa98ca49d349f5aeceaaaf38b313b1e8967c9ef6ce92ae85f86d23b0dd2b1291
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Filesize
927B
MD54a911455784f74e368a4c2c7876d76f4
SHA1a1700a0849ffb4f26671eb76da2489946b821c34
SHA256264098e15b5b33d425f3b76e45b7976b58f917048125041135f7e60d8151108c
SHA5124617591400409e1930195795a55e20d5f063042bb3e9fd1955099066e507b6ac8a1e3ae54cc42418e2639149b31bf7e58cd5743670d9030a15e29f14d813815d
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Filesize
5KB
MD589be9b6a708149f85822c88e6b7d6c2e
SHA127012a1215cb3bdd7ffa075a16a24a4b89a61ec4
SHA25665df3293699a3f8c072f64e90b9555e89d3c784f8e4b03ce2fe7cd4051d539aa
SHA512d1b72b13e23684aa07e8c1d566204d2dbf0d273d0960fa92a8d034fcaf4eed47a3f7f76a06f2b1e96089d02095f0ed73f838cedd36c1b54456428a6cdf95e448
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Filesize
5KB
MD589be9b6a708149f85822c88e6b7d6c2e
SHA127012a1215cb3bdd7ffa075a16a24a4b89a61ec4
SHA25665df3293699a3f8c072f64e90b9555e89d3c784f8e4b03ce2fe7cd4051d539aa
SHA512d1b72b13e23684aa07e8c1d566204d2dbf0d273d0960fa92a8d034fcaf4eed47a3f7f76a06f2b1e96089d02095f0ed73f838cedd36c1b54456428a6cdf95e448
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Filesize
5KB
MD589be9b6a708149f85822c88e6b7d6c2e
SHA127012a1215cb3bdd7ffa075a16a24a4b89a61ec4
SHA25665df3293699a3f8c072f64e90b9555e89d3c784f8e4b03ce2fe7cd4051d539aa
SHA512d1b72b13e23684aa07e8c1d566204d2dbf0d273d0960fa92a8d034fcaf4eed47a3f7f76a06f2b1e96089d02095f0ed73f838cedd36c1b54456428a6cdf95e448
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Filesize
5KB
MD589be9b6a708149f85822c88e6b7d6c2e
SHA127012a1215cb3bdd7ffa075a16a24a4b89a61ec4
SHA25665df3293699a3f8c072f64e90b9555e89d3c784f8e4b03ce2fe7cd4051d539aa
SHA512d1b72b13e23684aa07e8c1d566204d2dbf0d273d0960fa92a8d034fcaf4eed47a3f7f76a06f2b1e96089d02095f0ed73f838cedd36c1b54456428a6cdf95e448
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Filesize
5KB
MD589be9b6a708149f85822c88e6b7d6c2e
SHA127012a1215cb3bdd7ffa075a16a24a4b89a61ec4
SHA25665df3293699a3f8c072f64e90b9555e89d3c784f8e4b03ce2fe7cd4051d539aa
SHA512d1b72b13e23684aa07e8c1d566204d2dbf0d273d0960fa92a8d034fcaf4eed47a3f7f76a06f2b1e96089d02095f0ed73f838cedd36c1b54456428a6cdf95e448
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB
-
Filesize
76KB
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Filesize
76KB
-
Filesize
76KB
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Filesize
76KB
-
Filesize
76KB
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB
-
Filesize
76KB
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Filesize
76KB
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Filesize
76KB
-
Filesize
76KB
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB
-
Filesize
76KB
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB
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Filesize
76KB
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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
296KB
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Filesize
7.7MB
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Filesize
64KB
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Filesize
7.7MB