Analysis
- max time kernel
150s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20240611-en - resource tags
arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system - submitted
13/06/2024, 23:41
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
66dbc95973ffaa1071df7475d7a2cf23aed874a1f7222c7c668799fb2d8055cb.exe
Resource
win7-20240220-en
windows7-x64
12 signatures
150 seconds
Behavioral task
behavioral2
Sample
66dbc95973ffaa1071df7475d7a2cf23aed874a1f7222c7c668799fb2d8055cb.exe
Resource
win10v2004-20240611-en
windows10-2004-x64
11 signatures
150 seconds
General
- Target 66dbc95973ffaa1071df7475d7a2cf23aed874a1f7222c7c668799fb2d8055cb.exe
- Size 206KB
- Sample240613-3prgbswbmb
- SHA256 66dbc95973ffaa1071df7475d7a2cf23aed874a1f7222c7c668799fb2d8055cb
- MD5 0be7eba49835bccd5c1eae1b86cedaeb
- SHA1 ee8430400b0203967f09da7a2ef76569a45017e9
- SHA512 2020c248458a0cc16da67e2977fec082412b125360acb5974224f7afe7fb368d36dfbc6f5c7492f482c48cf6b696950769bf62c23f4caa847db1266b791d2c57
- SSDEEP 3072:EvEfVUzSLhIVbV6i5LirrlZrHyrUHUckoMQ2RN6un2:EvEN2U+T6i5LirrllHy4HUcMQY6h
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Modifies WinLogon for persistence 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "C:\\Windows\\explorer.exe, c:\\windows\\system\\explorer.exe" explorer.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "C:\\Windows\\explorer.exe, c:\\windows\\system\\explorer.exe" svchost.exe - Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-200405930-3877336739-3533750831-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-200405930-3877336739-3533750831-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" svchost.exe - Modifies Installed Components in the registry 2 TTPs 8 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}\StubPath = "C:\\Users\\Admin\\AppData\\Roaming\\mrsys.exe MR" explorer.exe Key created \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{F146C9B1-VMVQ-A9RC-NUFL-D0BA00B4E999} svchost.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{F146C9B1-VMVQ-A9RC-NUFL-D0BA00B4E999}\StubPath = "C:\\Users\\Admin\\AppData\\Roaming\\mrsys.exe MR" svchost.exe Key deleted \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666} svchost.exe Key created \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666} svchost.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}\StubPath = "C:\\Users\\Admin\\AppData\\Roaming\\mrsys.exe MR" svchost.exe Key deleted \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{F146C9B1-VMVQ-A9RC-NUFL-D0BA00B4E999} svchost.exe Key created \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666} explorer.exe - Executes dropped EXE 4 IoCs
pid Process 3560 explorer.exe 2060 spoolsv.exe 2844 svchost.exe 2040 spoolsv.exe - Adds Run key to start application 2 TTPs 4 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\system\\explorer.exe RO" explorer.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\system\\svchost.exe RO" explorer.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\system\\explorer.exe RO" svchost.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\system\\svchost.exe RO" svchost.exe - Drops file in Windows directory 6 IoCs
description ioc Process File opened for modification C:\Windows\system\udsys.exe explorer.exe File opened for modification \??\c:\windows\system\explorer.exe 66dbc95973ffaa1071df7475d7a2cf23aed874a1f7222c7c668799fb2d8055cb.exe File opened for modification \??\c:\windows\system\spoolsv.exe explorer.exe File opened for modification \??\c:\windows\system\svchost.exe spoolsv.exe File opened for modification \??\c:\windows\system\explorer.exe explorer.exe File opened for modification \??\c:\windows\system\svchost.exe svchost.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2836 66dbc95973ffaa1071df7475d7a2cf23aed874a1f7222c7c668799fb2d8055cb.exe 2836 66dbc95973ffaa1071df7475d7a2cf23aed874a1f7222c7c668799fb2d8055cb.exe 3560 explorer.exe 3560 explorer.exe 3560 explorer.exe 3560 explorer.exe 3560 explorer.exe 3560 explorer.exe 3560 explorer.exe 3560 explorer.exe 2844 svchost.exe 2844 svchost.exe 2844 svchost.exe 2844 svchost.exe 3560 explorer.exe 3560 explorer.exe 2844 svchost.exe 2844 svchost.exe 3560 explorer.exe 3560 explorer.exe 2844 svchost.exe 2844 svchost.exe 3560 explorer.exe 3560 explorer.exe 2844 svchost.exe 2844 svchost.exe 3560 explorer.exe 3560 explorer.exe 2844 svchost.exe 2844 svchost.exe 3560 explorer.exe 3560 explorer.exe 2844 svchost.exe 2844 svchost.exe 3560 explorer.exe 3560 explorer.exe 2844 svchost.exe 2844 svchost.exe 3560 explorer.exe 3560 explorer.exe 2844 svchost.exe 2844 svchost.exe 3560 explorer.exe 3560 explorer.exe 2844 svchost.exe 2844 svchost.exe 3560 explorer.exe 3560 explorer.exe 2844 svchost.exe 2844 svchost.exe 3560 explorer.exe 3560 explorer.exe 2844 svchost.exe 2844 svchost.exe 3560 explorer.exe 3560 explorer.exe 2844 svchost.exe 2844 svchost.exe 3560 explorer.exe 3560 explorer.exe 2844 svchost.exe 2844 svchost.exe 3560 explorer.exe 3560 explorer.exe - Suspicious behavior: GetForegroundWindowSpam 2 IoCs
pid Process 3560 explorer.exe 2844 svchost.exe - Suspicious use of SetWindowsHookEx 12 IoCs
pid Process 2836 66dbc95973ffaa1071df7475d7a2cf23aed874a1f7222c7c668799fb2d8055cb.exe 2836 66dbc95973ffaa1071df7475d7a2cf23aed874a1f7222c7c668799fb2d8055cb.exe 3560 explorer.exe 3560 explorer.exe 2060 spoolsv.exe 2060 spoolsv.exe 2844 svchost.exe 2844 svchost.exe 2040 spoolsv.exe 2040 spoolsv.exe 3560 explorer.exe 3560 explorer.exe - Suspicious use of WriteProcessMemory 21 IoCs
description pid Process procid_target PID 2836 wrote to memory of 3560 2836 66dbc95973ffaa1071df7475d7a2cf23aed874a1f7222c7c668799fb2d8055cb.exe 83 PID 2836 wrote to memory of 3560 2836 66dbc95973ffaa1071df7475d7a2cf23aed874a1f7222c7c668799fb2d8055cb.exe 83 PID 2836 wrote to memory of 3560 2836 66dbc95973ffaa1071df7475d7a2cf23aed874a1f7222c7c668799fb2d8055cb.exe 83 PID 3560 wrote to memory of 2060 3560 explorer.exe 84 PID 3560 wrote to memory of 2060 3560 explorer.exe 84 PID 3560 wrote to memory of 2060 3560 explorer.exe 84 PID 2060 wrote to memory of 2844 2060 spoolsv.exe 86 PID 2060 wrote to memory of 2844 2060 spoolsv.exe 86 PID 2060 wrote to memory of 2844 2060 spoolsv.exe 86 PID 2844 wrote to memory of 2040 2844 svchost.exe 87 PID 2844 wrote to memory of 2040 2844 svchost.exe 87 PID 2844 wrote to memory of 2040 2844 svchost.exe 87 PID 2844 wrote to memory of 4716 2844 svchost.exe 89 PID 2844 wrote to memory of 4716 2844 svchost.exe 89 PID 2844 wrote to memory of 4716 2844 svchost.exe 89 PID 2844 wrote to memory of 2940 2844 svchost.exe 97 PID 2844 wrote to memory of 2940 2844 svchost.exe 97 PID 2844 wrote to memory of 2940 2844 svchost.exe 97 PID 2844 wrote to memory of 3932 2844 svchost.exe 99 PID 2844 wrote to memory of 3932 2844 svchost.exe 99 PID 2844 wrote to memory of 3932 2844 svchost.exe 99
Processes
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C:\Users\Admin\AppData\Local\Temp\66dbc95973ffaa1071df7475d7a2cf23aed874a1f7222c7c668799fb2d8055cb.exe"C:\Users\Admin\AppData\Local\Temp\66dbc95973ffaa1071df7475d7a2cf23aed874a1f7222c7c668799fb2d8055cb.exe"1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2836 -
\??\c:\windows\system\explorer.exec:\windows\system\explorer.exe2⤵
- Modifies WinLogon for persistence
- Modifies visiblity of hidden/system files in Explorer
- Modifies Installed Components in the registry
- Executes dropped EXE
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3560 -
\??\c:\windows\system\spoolsv.exec:\windows\system\spoolsv.exe SE3⤵
- Executes dropped EXE
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2060 -
\??\c:\windows\system\svchost.exec:\windows\system\svchost.exe4⤵
- Modifies WinLogon for persistence
- Modifies visiblity of hidden/system files in Explorer
- Modifies Installed Components in the registry
- Executes dropped EXE
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2844 -
\??\c:\windows\system\spoolsv.exec:\windows\system\spoolsv.exe PR5⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:2040
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C:\Windows\SysWOW64\at.exeat 23:43 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe5⤵PID:4716
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C:\Windows\SysWOW64\at.exeat 23:44 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe5⤵PID:2940
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C:\Windows\SysWOW64\at.exeat 23:45 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe5⤵PID:3932
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
3Registry Run Keys / Startup Folder
2Winlogon Helper DLL
1Privilege Escalation
Boot or Logon Autostart Execution
3Registry Run Keys / Startup Folder
2Winlogon Helper DLL
1Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\mrsys.exe
- Size 206KB
- SHA256 41febe9c611721c6fadac5db6353d0b15de02821f0b0389c3eeb813a50774d72
- MD5 20334a928fca0ec714026ebaf41c1034
- SHA1 1cc7afdf691c051b9ecdfccdbc8f38570e36df27
- SHA512 fc61a359ef3b0c9bd1d5454fe457ed2e1afbe0843b4b47e4fbb10def0f3ed45153cf5411a2e28c675d680c7f1e5346025c74d2aa39ddbd61021490ae102a3fb4
- SSDEEP 3072:EvEfVUzSLhIVbV6i5LirrlZrHyrUHUckoMQ2RN6unK:EvEN2U+T6i5LirrllHy4HUcMQY65
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Windows\System\explorer.exe
- Size 206KB
- SHA256 15cbb554e9b437b7c6b829a8b0128693a3eb6a108515e641e8ececa15cf699a4
- MD5 9c0c174e3d23648c9fa65550687eb9e3
- SHA1 d911e97aaf680eae2430f53971d32f20bef98a5d
- SHA512 225ec35b676bd09bfb74cbd1e43dc35c4fa5b40429510baf477b5561d4745ee9a5df6ef95ba6fbb79883f7e80a00e1f46b19a905400e5dab4ec8fe5b2ae2f09d
- SSDEEP 3072:EvEfVUzSLhIVbV6i5LirrlZrHyrUHUckoMQ2RN6un0:EvEN2U+T6i5LirrllHy4HUcMQY6F
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Windows\System\spoolsv.exe
- Size 206KB
- SHA256 3e0cebed2e504869fdafbc986cc39ebcf7022483c204066d45f57782113bbf78
- MD5 b2571b219785f8f5dc487a85b0b4bb14
- SHA1 eaef99d1f25be138983795c4c403ba18ea7164c9
- SHA512 1789f5aae6dfabad06670c12e26a59113c316ac16a5bd72e27cc67ecebd70863f56f70435a206e54c0d0945a4dff1627f3af4e60ff6f181288a940636f17ecfd
- SSDEEP 3072:EvEfVUzSLhIVbV6i5LirrlZrHyrUHUckoMQ2RN6unx:EvEN2U+T6i5LirrllHy4HUcMQY60
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Windows\System\svchost.exe
- Size 206KB
- SHA256 dce45509416f604dafb47f868587f0546818615cd04a03045dfa9a6a66cd73db
- MD5 152ce4227b4bd5b71d97304d6fc9bcc1
- SHA1 482cf98ae8869d30f6d9798c0566854e5f12acb1
- SHA512 d10160d7f9ae3f557ea35ba3f458e2565adbe2b996b94860946813e527cd2e0c79298d6882ee7b07728a024c0b0ed2214c6f1be1f5e22719ee9d007f2346e75c
- SSDEEP 3072:EvEfVUzSLhIVbV6i5LirrlZrHyrUHUckoMQ2RN6unu:EvEN2U+T6i5LirrllHy4HUcMQY6N
- MD5 SHA1 SHA512 SSDEEP