Analysis
- max time kernel
150s - max time network
125s - platform
windows10-2004_x64 - resource
win10v2004-20240426-en - resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system - submitted
03/06/2024, 21:54
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
58fc21580863305afd65f758abae93c3037145f637cbafee58b973b19de15542.exe
Resource
win7-20240508-en
windows7-x64
12 signatures
150 seconds
Behavioral task
behavioral2
Sample
58fc21580863305afd65f758abae93c3037145f637cbafee58b973b19de15542.exe
Resource
win10v2004-20240426-en
windows10-2004-x64
11 signatures
150 seconds
General
- Target 58fc21580863305afd65f758abae93c3037145f637cbafee58b973b19de15542.exe
- Size 206KB
- Sample240603-1r91caac91
- SHA256 58fc21580863305afd65f758abae93c3037145f637cbafee58b973b19de15542
- MD5 85331a41730faa4bda824daf9e86a5dd
- SHA1 7e738ade3342edec5f7027230052a92b38d1a181
- SHA512 d8e9c4ab1ce4ec45a6ecce4c91191bcf25e74db266d4e70777b2fa01831084349e1681f4691dabbc9108e3c790a56f7ceb4f161cf2782f98c8d68b937a11b5e2
- SSDEEP 3072:zvEfVUzSLhIVbV6i5LirrlZrHyrUHUckoMQ2RN6unn6:zvEN2U+T6i5LirrllHy4HUcMQY6M6
- 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-1-5-21-540404634-651139247-2967210625-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\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" 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 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 - Executes dropped EXE 4 IoCs
pid Process 3212 explorer.exe 2776 spoolsv.exe 5004 svchost.exe 4868 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\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 Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\system\\explorer.exe RO" explorer.exe - Drops file in Windows directory 6 IoCs
description ioc Process File opened for modification \??\c:\windows\system\explorer.exe 58fc21580863305afd65f758abae93c3037145f637cbafee58b973b19de15542.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 File opened for modification C:\Windows\system\udsys.exe explorer.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4080 58fc21580863305afd65f758abae93c3037145f637cbafee58b973b19de15542.exe 4080 58fc21580863305afd65f758abae93c3037145f637cbafee58b973b19de15542.exe 3212 explorer.exe 3212 explorer.exe 3212 explorer.exe 3212 explorer.exe 3212 explorer.exe 3212 explorer.exe 5004 svchost.exe 5004 svchost.exe 5004 svchost.exe 5004 svchost.exe 3212 explorer.exe 3212 explorer.exe 5004 svchost.exe 5004 svchost.exe 3212 explorer.exe 3212 explorer.exe 5004 svchost.exe 5004 svchost.exe 3212 explorer.exe 3212 explorer.exe 5004 svchost.exe 5004 svchost.exe 3212 explorer.exe 3212 explorer.exe 5004 svchost.exe 5004 svchost.exe 5004 svchost.exe 3212 explorer.exe 3212 explorer.exe 5004 svchost.exe 5004 svchost.exe 3212 explorer.exe 3212 explorer.exe 5004 svchost.exe 3212 explorer.exe 5004 svchost.exe 3212 explorer.exe 5004 svchost.exe 3212 explorer.exe 5004 svchost.exe 3212 explorer.exe 5004 svchost.exe 3212 explorer.exe 5004 svchost.exe 3212 explorer.exe 5004 svchost.exe 3212 explorer.exe 5004 svchost.exe 3212 explorer.exe 5004 svchost.exe 5004 svchost.exe 3212 explorer.exe 3212 explorer.exe 5004 svchost.exe 5004 svchost.exe 3212 explorer.exe 3212 explorer.exe 5004 svchost.exe 3212 explorer.exe 5004 svchost.exe 3212 explorer.exe 5004 svchost.exe - Suspicious behavior: GetForegroundWindowSpam 2 IoCs
pid Process 5004 svchost.exe 3212 explorer.exe - Suspicious use of SetWindowsHookEx 12 IoCs
pid Process 4080 58fc21580863305afd65f758abae93c3037145f637cbafee58b973b19de15542.exe 4080 58fc21580863305afd65f758abae93c3037145f637cbafee58b973b19de15542.exe 3212 explorer.exe 3212 explorer.exe 2776 spoolsv.exe 2776 spoolsv.exe 5004 svchost.exe 5004 svchost.exe 4868 spoolsv.exe 4868 spoolsv.exe 3212 explorer.exe 3212 explorer.exe - Suspicious use of WriteProcessMemory 21 IoCs
description pid Process procid_target PID 4080 wrote to memory of 3212 4080 58fc21580863305afd65f758abae93c3037145f637cbafee58b973b19de15542.exe 80 PID 4080 wrote to memory of 3212 4080 58fc21580863305afd65f758abae93c3037145f637cbafee58b973b19de15542.exe 80 PID 4080 wrote to memory of 3212 4080 58fc21580863305afd65f758abae93c3037145f637cbafee58b973b19de15542.exe 80 PID 3212 wrote to memory of 2776 3212 explorer.exe 81 PID 3212 wrote to memory of 2776 3212 explorer.exe 81 PID 3212 wrote to memory of 2776 3212 explorer.exe 81 PID 2776 wrote to memory of 5004 2776 spoolsv.exe 82 PID 2776 wrote to memory of 5004 2776 spoolsv.exe 82 PID 2776 wrote to memory of 5004 2776 spoolsv.exe 82 PID 5004 wrote to memory of 4868 5004 svchost.exe 83 PID 5004 wrote to memory of 4868 5004 svchost.exe 83 PID 5004 wrote to memory of 4868 5004 svchost.exe 83 PID 5004 wrote to memory of 4320 5004 svchost.exe 84 PID 5004 wrote to memory of 4320 5004 svchost.exe 84 PID 5004 wrote to memory of 4320 5004 svchost.exe 84 PID 5004 wrote to memory of 4264 5004 svchost.exe 94 PID 5004 wrote to memory of 4264 5004 svchost.exe 94 PID 5004 wrote to memory of 4264 5004 svchost.exe 94 PID 5004 wrote to memory of 3680 5004 svchost.exe 96 PID 5004 wrote to memory of 3680 5004 svchost.exe 96 PID 5004 wrote to memory of 3680 5004 svchost.exe 96
Processes
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C:\Users\Admin\AppData\Local\Temp\58fc21580863305afd65f758abae93c3037145f637cbafee58b973b19de15542.exe"C:\Users\Admin\AppData\Local\Temp\58fc21580863305afd65f758abae93c3037145f637cbafee58b973b19de15542.exe"1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4080 -
\??\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:3212 -
\??\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:2776 -
\??\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:5004 -
\??\c:\windows\system\spoolsv.exec:\windows\system\spoolsv.exe PR5⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:4868
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C:\Windows\SysWOW64\at.exeat 21:56 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe5⤵PID:4320
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C:\Windows\SysWOW64\at.exeat 21:57 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe5⤵PID:4264
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C:\Windows\SysWOW64\at.exeat 21:58 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe5⤵PID:3680
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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 b09dc16247f186cc9fbe74e7cce9bb823593d42732bac31ddc8446dac859aa8b
- MD5 1385bc05117fddb19fec4b01c808b904
- SHA1 5952de487670ab9aaadd89fe228d19b68bdfe747
- SHA512 8de542f44185731ddb507d2e54277820e082a066838be96df6b0bc232f6a6b7e4b50a54971439ef20dca72c568dd3f108f1c75225ef57ba9d8253f378fcbbd4d
- SSDEEP 3072:zvEfVUzSLhIVbV6i5LirrlZrHyrUHUckoMQ2RN6unno:zvEN2U+T6i5LirrllHy4HUcMQY6Mo
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Windows\System\explorer.exe
- Size 206KB
- SHA256 e69b6a90dcc8278c90b98a11d1db5623b39ec4293b7124e1e199d9c3ea3cd387
- MD5 4a25e8ede03b0e4a230abc0a3b9a10bb
- SHA1 a6933e0a7ce27ff10d3155c185f0ee0c6543d259
- SHA512 39cb252202b748f2c8000eddb1234f443bf08a77ba4bc07af8cc3ebf2e624d663f4c896d75551d4f9d1f5d5c47e46f5e49779914f5ab5fa2d1be7e6644689b30
- SSDEEP 3072:zvEfVUzSLhIVbV6i5LirrlZrHyrUHUckoMQ2RN6unni:zvEN2U+T6i5LirrllHy4HUcMQY6Mi
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Windows\System\spoolsv.exe
- Size 206KB
- SHA256 a4604ec6d2e17370dec566185cad0859e9932d1c679fe7b5d04bf503636f1d46
- MD5 324f2d6a810637c84a7f149ffa40f295
- SHA1 a1dc1fb6b4a5cf439789a7d924fbd83f4f20ed5f
- SHA512 8e05ef3686b7273eec0535158adaf2e61980d8fe4ac984a64a6273590351be44b2e8087e7450f283e06d37476eff823509bede9a2cfa1bc1c129b6c6e41bddf3
- SSDEEP 3072:zvEfVUzSLhIVbV6i5LirrlZrHyrUHUckoMQ2RN6unn8:zvEN2U+T6i5LirrllHy4HUcMQY6M8
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Windows\System\svchost.exe
- Size 206KB
- SHA256 1beb58172b0dc2e022d104f0843052c2334dc4334a82ffa3d1cc4f33827f7260
- MD5 b4c99839d5ba5487644ce9b3aba2e860
- SHA1 362e076007f78eb98a37f65e7ea15e793820a069
- SHA512 ddb6c09385d7e500524bf5cbe09c4cd33cba98e9709a84aaa524002658ed7a5fc3280d0e3694cc6695b821413ffb861f204fe68ca80e3096c7a9e5dac1c59410
- SSDEEP 3072:zvEfVUzSLhIVbV6i5LirrlZrHyrUHUckoMQ2RN6unnk:zvEN2U+T6i5LirrllHy4HUcMQY6Mk
- MD5 SHA1 SHA512 SSDEEP