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Analysis
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max time kernel
150s -
max time network
118s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
02/06/2024, 20:40
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
3511f46e5a8756eb55109c119413b5a403a6a4b48a034517263932006bcd5391.exe
Resource
win7-20240221-en
windows7-x64
12 signatures
150 seconds
Behavioral task
behavioral2
Sample
3511f46e5a8756eb55109c119413b5a403a6a4b48a034517263932006bcd5391.exe
Resource
win10v2004-20240426-en
windows10-2004-x64
11 signatures
150 seconds
General
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Target
3511f46e5a8756eb55109c119413b5a403a6a4b48a034517263932006bcd5391.exe
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Size
199KB
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MD5
9fb28fbd3e062a1f91cf45004d2f796b
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SHA1
bbe609bacd8179b61b22da7a9dcd172b71505d95
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SHA256
3511f46e5a8756eb55109c119413b5a403a6a4b48a034517263932006bcd5391
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SHA512
16ecae84da06a6b33ec52abf60373a163fbb354352124211558ae2a0013b7807f70cddedd78c888f624dc0d6180685926df2dbdfa27bd88a1c0ab52c67c02c90
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SSDEEP
3072:7vEfVUzSLhIVbV6i5LirrlZrHyrUHUckoMQ2RN6u4Pmu1:7vEN2U+T6i5LirrllHy4HUcMQY6j
Score
10/10
Malware Config
Signatures
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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-1-5-21-1298544033-3225604241-2703760938-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" svchost.exe -
Modifies Installed Components in the registry 2 TTPs 8 IoCs
description ioc Process 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 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 -
Executes dropped EXE 4 IoCs
pid Process 2168 explorer.exe 3052 spoolsv.exe 2600 svchost.exe 2608 spoolsv.exe -
Loads dropped DLL 8 IoCs
pid Process 1652 3511f46e5a8756eb55109c119413b5a403a6a4b48a034517263932006bcd5391.exe 1652 3511f46e5a8756eb55109c119413b5a403a6a4b48a034517263932006bcd5391.exe 2168 explorer.exe 2168 explorer.exe 3052 spoolsv.exe 3052 spoolsv.exe 2600 svchost.exe 2600 svchost.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 3511f46e5a8756eb55109c119413b5a403a6a4b48a034517263932006bcd5391.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).
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Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1652 3511f46e5a8756eb55109c119413b5a403a6a4b48a034517263932006bcd5391.exe 2168 explorer.exe 2168 explorer.exe 2168 explorer.exe 2168 explorer.exe 2600 svchost.exe 2600 svchost.exe 2600 svchost.exe 2168 explorer.exe 2600 svchost.exe 2168 explorer.exe 2168 explorer.exe 2600 svchost.exe 2168 explorer.exe 2600 svchost.exe 2600 svchost.exe 2168 explorer.exe 2600 svchost.exe 2168 explorer.exe 2168 explorer.exe 2600 svchost.exe 2168 explorer.exe 2600 svchost.exe 2168 explorer.exe 2600 svchost.exe 2168 explorer.exe 2600 svchost.exe 2600 svchost.exe 2168 explorer.exe 2168 explorer.exe 2600 svchost.exe 2168 explorer.exe 2600 svchost.exe 2168 explorer.exe 2600 svchost.exe 2168 explorer.exe 2600 svchost.exe 2168 explorer.exe 2600 svchost.exe 2600 svchost.exe 2168 explorer.exe 2600 svchost.exe 2168 explorer.exe 2600 svchost.exe 2168 explorer.exe 2600 svchost.exe 2168 explorer.exe 2168 explorer.exe 2600 svchost.exe 2168 explorer.exe 2600 svchost.exe 2168 explorer.exe 2600 svchost.exe 2168 explorer.exe 2600 svchost.exe 2600 svchost.exe 2168 explorer.exe 2600 svchost.exe 2168 explorer.exe 2600 svchost.exe 2168 explorer.exe 2168 explorer.exe 2600 svchost.exe 2600 svchost.exe -
Suspicious behavior: GetForegroundWindowSpam 2 IoCs
pid Process 2168 explorer.exe 2600 svchost.exe -
Suspicious use of SetWindowsHookEx 12 IoCs
pid Process 1652 3511f46e5a8756eb55109c119413b5a403a6a4b48a034517263932006bcd5391.exe 1652 3511f46e5a8756eb55109c119413b5a403a6a4b48a034517263932006bcd5391.exe 2168 explorer.exe 2168 explorer.exe 3052 spoolsv.exe 3052 spoolsv.exe 2600 svchost.exe 2600 svchost.exe 2608 spoolsv.exe 2608 spoolsv.exe 2168 explorer.exe 2168 explorer.exe -
Suspicious use of WriteProcessMemory 28 IoCs
description pid Process procid_target PID 1652 wrote to memory of 2168 1652 3511f46e5a8756eb55109c119413b5a403a6a4b48a034517263932006bcd5391.exe 28 PID 1652 wrote to memory of 2168 1652 3511f46e5a8756eb55109c119413b5a403a6a4b48a034517263932006bcd5391.exe 28 PID 1652 wrote to memory of 2168 1652 3511f46e5a8756eb55109c119413b5a403a6a4b48a034517263932006bcd5391.exe 28 PID 1652 wrote to memory of 2168 1652 3511f46e5a8756eb55109c119413b5a403a6a4b48a034517263932006bcd5391.exe 28 PID 2168 wrote to memory of 3052 2168 explorer.exe 29 PID 2168 wrote to memory of 3052 2168 explorer.exe 29 PID 2168 wrote to memory of 3052 2168 explorer.exe 29 PID 2168 wrote to memory of 3052 2168 explorer.exe 29 PID 3052 wrote to memory of 2600 3052 spoolsv.exe 30 PID 3052 wrote to memory of 2600 3052 spoolsv.exe 30 PID 3052 wrote to memory of 2600 3052 spoolsv.exe 30 PID 3052 wrote to memory of 2600 3052 spoolsv.exe 30 PID 2600 wrote to memory of 2608 2600 svchost.exe 31 PID 2600 wrote to memory of 2608 2600 svchost.exe 31 PID 2600 wrote to memory of 2608 2600 svchost.exe 31 PID 2600 wrote to memory of 2608 2600 svchost.exe 31 PID 2600 wrote to memory of 2500 2600 svchost.exe 32 PID 2600 wrote to memory of 2500 2600 svchost.exe 32 PID 2600 wrote to memory of 2500 2600 svchost.exe 32 PID 2600 wrote to memory of 2500 2600 svchost.exe 32 PID 2600 wrote to memory of 2780 2600 svchost.exe 36 PID 2600 wrote to memory of 2780 2600 svchost.exe 36 PID 2600 wrote to memory of 2780 2600 svchost.exe 36 PID 2600 wrote to memory of 2780 2600 svchost.exe 36 PID 2600 wrote to memory of 2644 2600 svchost.exe 38 PID 2600 wrote to memory of 2644 2600 svchost.exe 38 PID 2600 wrote to memory of 2644 2600 svchost.exe 38 PID 2600 wrote to memory of 2644 2600 svchost.exe 38
Processes
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C:\Users\Admin\AppData\Local\Temp\3511f46e5a8756eb55109c119413b5a403a6a4b48a034517263932006bcd5391.exe"C:\Users\Admin\AppData\Local\Temp\3511f46e5a8756eb55109c119413b5a403a6a4b48a034517263932006bcd5391.exe"1⤵
- Loads dropped DLL
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1652 -
\??\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
- Loads dropped DLL
- 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:2168 -
\??\c:\windows\system\spoolsv.exec:\windows\system\spoolsv.exe SE3⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3052 -
\??\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
- Loads dropped DLL
- 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:2600 -
\??\c:\windows\system\spoolsv.exec:\windows\system\spoolsv.exe PR5⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:2608
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C:\Windows\SysWOW64\at.exeat 20:42 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe5⤵PID:2500
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C:\Windows\SysWOW64\at.exeat 20:43 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe5⤵PID:2780
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C:\Windows\SysWOW64\at.exeat 20:44 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe5⤵PID:2644
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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
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Filesize
216KB
MD5c2260ad87bdece3aa67c3f80899b2c61
SHA13ce3f03082a3aba84e2dd0f33feab9b788938c63
SHA256c8c8d0955911f6860543bed65c9f5904e13edcfd2f7e2f22f29bb60bf2013434
SHA512fddc73f4d76ace6cccb14322d8d1eb0201a2aba155d94b5496707a1409c9934fcda938a5748a9ff64336b061a6226c0f239b3cc1d635eb1d692d5f2ff8c90435
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Filesize
216KB
MD5e18b8f86824c2300f2763405798e1d1a
SHA1ba2fbee49bf1c569ce3ee0a143d80ce0f76fd499
SHA256633550140267c0931908c885a2b66e8cf6518ec198a42fa76971868aff217c36
SHA51250b872b536381136527e7b387e2d3a787023cf89371c3fedb9e847b373607d411d1abe4c42982156356b9e1391b4c1e5f24fd7a2a865436a1ca4a47e1651c6a3
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Filesize
216KB
MD58041e391a96dbf3a47211edffa25f7d5
SHA1b4cea4c1d115b35a0f80085aaa70e9d8cdebaf76
SHA256ee4daea1e059f77bc1ffe3c4a3b6e7d003d7626e0f021ccc996de2416766dbb5
SHA512920fec3ed2309136a74d16d9d5acc37294dbb6e157c27d946a92a646a7e77e9facdfef9f2fec59b0dc0a849052e984a7ea67ec1af005fd3fa912b3c213352ae4
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Filesize
216KB
MD5cf3d7cf5909f2c40266e15e4238f1756
SHA1c0355643eaec8191d00ae244c03b4ba80ad158d1
SHA256850cc1bb496e608b1b0b1fef5ed08e7196cf01238e4aadace922c0eb64cb61a5
SHA512346c13466f81670aa6f1cc9e594d53cea616877da9010fb777b7fa3bc12566d2c77253f3b4b034dc01d5e0dc4d50c23fb43df1d7e36d9545f42057b49545f308